Sol (Sun) and its phenomena
- Thread starter mabar
- Start date
SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 14_2023
There are currently 7 sunspot regions on the solar disk:AR3460, AR3461, AR3462, AR3463 AR3464, AR3465, AR3466
AR3454 is gone
● Auroral Activity
Aurora Oval Bz: 1.81 nT North
● Current Conditions at 05:00 UTC on October 14
▪︎ Geospace quiet (kp 2)
▪︎ Solar wind speed record: 529 km/sec (Moderately high speed)
▪︎ density: 0.03 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 3.81 nT
▪︎ Neutron Counts today: - 2.7 % (Low)
▪︎ X-ray Solar Flare: C1 0145 UT Oct14
▪︎ Sunspot number: 91 (SN 126 October 13)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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THE SUN REMAINS CALM AS IT WAITS FOR THE MOON. Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 16:09 UTC on October 13
There are currently 7 sunspot regions on the solar disk:AR3460, AR3461, AR3462, AR3463 AR3464, AR3465, AR3466
AR3454 is gone
Total number of sunspots has decreased to 91 (35 of these are grouped into 7 active regions) NOAA forecasts for the next 24h: 95% chance for C flares, 25% chance M flares and 1% chance for X flares.
AR3460 continues with beta-gamma magnetic fields harboring energy for M-class flares.
AR3460 continues with beta-gamma magnetic fields harboring energy for M-class flares.
● Auroral Activity
The geomagnetic field has been at quiet to active levels (Kp4) for the past 24 hours. On October 13 solar wind speed reached a peak of 510 km/s (Moderately high speed) at 17:10 UTC Total IMF reached 24 nT at 08:29 UTC (strong impact to Earth magnetic field)
Aurora Oval Bz: 1.81 nT North
● Current Conditions at 05:00 UTC on October 14
▪︎ Geospace quiet (kp 2)
▪︎ Solar wind speed record: 529 km/sec (Moderately high speed)
▪︎ density: 0.03 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 3.81 nT
▪︎ Neutron Counts today: - 2.7 % (Low)
▪︎ X-ray Solar Flare: C1 0145 UT Oct14
▪︎ Sunspot number: 91 (SN 126 October 13)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 15_2023
Solar Eclipse. The image was taken in Bogota, Colombia.
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 05:15 UTC on October 14 from AR3460 (S10W57)
There are currently 7 sunspot regions on the solar disk:AR3460, AR3462, AR3463 AR3464, AR3465, AR3466 and new region AR3467
AR3461 is alpha
Total number of sunspots has increased to 100 (30 of these are grouped into 7 active regions) NOAA forecasts for the next 24h: 80% chance for C flares, 20% chance M flares and 1% chance for X flares.
AR3460 continues with beta-gamma magnetic fields harboring energy for M-class flares.
● Auroral Activity
The geomagnetic field has been at quiet to unsettled levels (Kp3) for the past 24 hours. On October 14 solar wind speed reached a peak of 548 km/s (Moderately high speed) at 02:02 UTC Total IMF reached 16 nT at 2151 UTC
Aurora Oval Bz: 1.31 nT North
● Current Conditions at 04:25 UTC on October 15
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 460 km/sec (Elevated speed)
▪︎ density: 0.48 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.51 nT
▪︎ Neutron Counts today: - 2.7 % (Low)
▪︎ X-ray Solar Flare: C2 0248 UT Oct15
▪︎ Sunspot number: 100 (SN 91 October 14)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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Solar Eclipse. The image was taken in Bogota, Colombia.
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 05:15 UTC on October 14 from AR3460 (S10W57)
There are currently 7 sunspot regions on the solar disk:AR3460, AR3462, AR3463 AR3464, AR3465, AR3466 and new region AR3467
AR3461 is alpha
Total number of sunspots has increased to 100 (30 of these are grouped into 7 active regions) NOAA forecasts for the next 24h: 80% chance for C flares, 20% chance M flares and 1% chance for X flares.
AR3460 continues with beta-gamma magnetic fields harboring energy for M-class flares.
● Auroral Activity
The geomagnetic field has been at quiet to unsettled levels (Kp3) for the past 24 hours. On October 14 solar wind speed reached a peak of 548 km/s (Moderately high speed) at 02:02 UTC Total IMF reached 16 nT at 2151 UTC
Aurora Oval Bz: 1.31 nT North
● Current Conditions at 04:25 UTC on October 15
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 460 km/sec (Elevated speed)
▪︎ density: 0.48 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.51 nT
▪︎ Neutron Counts today: - 2.7 % (Low)
▪︎ X-ray Solar Flare: C2 0248 UT Oct15
▪︎ Sunspot number: 100 (SN 91 October 14)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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SOLAR CYCLE ACTIVITY REPORT OCTOBER 16_2023
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C3 event observed at 16:33 UTC on October 15 from AR3464 (N04W06)
There are currently 6 sunspot regions on the solar disk:AR3460, AR3463 AR3464, AR3465, AR3466, AR3467
AR3462 is gone
Total number of sunspots has decreased to 92 (32 of these are grouped into 6 active regions) NOAA forecasts for the next 24h: 80% chance for C flares, 20% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp2) for the past 24 hours. On October 15 solar wind speed reached a peak of 497 km/s (Elevated speed) at 21:03 UTC
Aurora Oval Bz: -1.02 nT South
● Current Conditions at 04:15 UTC on October 16
▪︎ Geospace quiet (kp 2)
▪︎ Solar wind speed record: 374 km/sec (Normal speed)
▪︎ density: 0.25 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.76 nT
▪︎ Neutron Counts today: - 3.0 % (Low)
▪︎ X-ray Solar Flare: C1 0353 UT Oct16
▪︎ Sunspot number: 92 (SN 100 October 15)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C3 event observed at 16:33 UTC on October 15 from AR3464 (N04W06)
There are currently 6 sunspot regions on the solar disk:AR3460, AR3463 AR3464, AR3465, AR3466, AR3467
AR3462 is gone
Total number of sunspots has decreased to 92 (32 of these are grouped into 6 active regions) NOAA forecasts for the next 24h: 80% chance for C flares, 20% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp2) for the past 24 hours. On October 15 solar wind speed reached a peak of 497 km/s (Elevated speed) at 21:03 UTC
Aurora Oval Bz: -1.02 nT South
● Current Conditions at 04:15 UTC on October 16
▪︎ Geospace quiet (kp 2)
▪︎ Solar wind speed record: 374 km/sec (Normal speed)
▪︎ density: 0.25 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.76 nT
▪︎ Neutron Counts today: - 3.0 % (Low)
▪︎ X-ray Solar Flare: C1 0353 UT Oct16
▪︎ Sunspot number: 92 (SN 100 October 15)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 17_2023
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 16:06 UTC on October 16 from a incoming region on the northeast
There are currently 7 sunspot regions on the solar disk:AR3460, AR3463 AR3464, AR3465, AR3466, AR3467 and new region AR3468
Total number of sunspots has increased to 106 (36 of these are grouped into 7 active regions) NOAA forecasts for the next 24h: 80% chance for C flares, 20% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp2) for the past 24 hours. On October 16 solar wind speed reached a peak of 397 km/s (Normal speed) at 21:23 UTC Total IMF reached 3.11 nT at 05:10 UTC
Aurora Oval Bz: 1.23 nT North
● Current Conditions at 04:45 UTC on October 17
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 318 km/sec (Normal speed)
▪︎ density: 1.46 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.33 nT
▪︎ Neutron Counts today: - 3.0 % (Low)
▪︎ X-ray Solar Flare: C1 0210 UT Oct17
▪︎ Sunspot number: 106 (SN 92 October 16)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C9 event observed at 16:06 UTC on October 16 from a incoming region on the northeast
There are currently 7 sunspot regions on the solar disk:AR3460, AR3463 AR3464, AR3465, AR3466, AR3467 and new region AR3468
Total number of sunspots has increased to 106 (36 of these are grouped into 7 active regions) NOAA forecasts for the next 24h: 80% chance for C flares, 20% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp2) for the past 24 hours. On October 16 solar wind speed reached a peak of 397 km/s (Normal speed) at 21:23 UTC Total IMF reached 3.11 nT at 05:10 UTC
Aurora Oval Bz: 1.23 nT North
● Current Conditions at 04:45 UTC on October 17
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 318 km/sec (Normal speed)
▪︎ density: 1.46 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.33 nT
▪︎ Neutron Counts today: - 3.0 % (Low)
▪︎ X-ray Solar Flare: C1 0210 UT Oct17
▪︎ Sunspot number: 106 (SN 92 October 16)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 18_2023
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 05:05 UTC on October 17 from Region 3463 (S17W44).
There are currently 6 sunspot regions on the solar disk: AR3463 AR3464, AR3465, AR3466, AR3467, AR3468
AR3460 is gone
Total number of sunspots has decreased to 57 (36 of these are grouped into 6 active regions) NOAA forecasts for the next 24h: 70% chance for C flares, 10% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp1) for the past 24 hours. On October 17 solar wind speed reached a peak of 338 km/s (Normal speed) at 21:40 UTC Total IMF reached 3.11 nT at 05:10 UTC
Aurora Oval Bz: -0.96 nT South
● Current Conditions at 04:00 UTC on October 18
▪︎ Geospace quiet (kp 0)
▪︎ Solar wind speed record: 326 km/sec (Normal speed)
▪︎ density: 10.63 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 5.61 nT
▪︎ Neutron Counts today: - 2.3 % (Low)
▪︎ X-ray Solar Flare: C1 0212 UT Oct18
▪︎ Sunspot number: 57 (SN 106 October 17)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 05:05 UTC on October 17 from Region 3463 (S17W44).
There are currently 6 sunspot regions on the solar disk: AR3463 AR3464, AR3465, AR3466, AR3467, AR3468
AR3460 is gone
Total number of sunspots has decreased to 57 (36 of these are grouped into 6 active regions) NOAA forecasts for the next 24h: 70% chance for C flares, 10% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp1) for the past 24 hours. On October 17 solar wind speed reached a peak of 338 km/s (Normal speed) at 21:40 UTC Total IMF reached 3.11 nT at 05:10 UTC
Aurora Oval Bz: -0.96 nT South
● Current Conditions at 04:00 UTC on October 18
▪︎ Geospace quiet (kp 0)
▪︎ Solar wind speed record: 326 km/sec (Normal speed)
▪︎ density: 10.63 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 5.61 nT
▪︎ Neutron Counts today: - 2.3 % (Low)
▪︎ X-ray Solar Flare: C1 0212 UT Oct18
▪︎ Sunspot number: 57 (SN 106 October 17)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 19_2023
There are currently 3 sunspot regions on the solar disk: AR3464, AR3465, AR3468
AR3463, AR3466 & AR3468 are gone
Total number of sunspots has decreased to 54 (24 of these are grouped into 3 active regions) NOAA forecasts for the next 24h: 60% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet to unsettled levels (Kp3) for the past 24 hours. On October 18 solar wind speed reached a peak of 473 km/s (Elevated speed) at 16:41 UTC Total IMF reached 34 nT at 18:13UTC
A strong impact on the Earth's magnetic field is usually associated with the strengthening of meteorological, volcanic or tectonic phenomena.
This seems to be the case
Aurora Oval Bz: -3.49 nT South
● Current Conditions at 04:50 UTC on October 19
▪︎ Geospace unsettled (kp 3)
▪︎ Solar wind speed record: 388 km/sec (Normal speed)
▪︎ density: 3.37 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 6.44 nT
▪︎ Neutron Counts today: - 2.0 % (Low)
▪︎ X-ray Solar Flare: C1 0152 UT Oct19
▪︎ Sunspot number: 54 (SN 57 October 18)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
THE SUN WAS EATEN BY THE MOON (as ancient Mesoamerican cultures believed after an Eclipse happened). Solar activity has been at very low levels for the past 24 hours. There were no significant solar flares recorded on the Earth-facing side in the past 24 hours. As reported yesterday, the number of sunspots dropped precipitously from 107 to 56 and today only three regions remain active.
There are currently 3 sunspot regions on the solar disk: AR3464, AR3465, AR3468
AR3463, AR3466 & AR3468 are gone
Total number of sunspots has decreased to 54 (24 of these are grouped into 3 active regions) NOAA forecasts for the next 24h: 60% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet to unsettled levels (Kp3) for the past 24 hours. On October 18 solar wind speed reached a peak of 473 km/s (Elevated speed) at 16:41 UTC Total IMF reached 34 nT at 18:13UTC
A strong impact on the Earth's magnetic field is usually associated with the strengthening of meteorological, volcanic or tectonic phenomena.
This seems to be the case
#Norma strengthens to a hurricane!
Location: 545 km from Manzanillo
Wind: 130 km/h
Movement: north at 15 km/h
It will be a major hurricane (cat 3 or 4) approaching BCS over the weekend with a somewhat uncertain path:
Scenario 1: open ocean
️Scenario 2: toward Sinaloa
Aurora Oval Bz: -3.49 nT South
● Current Conditions at 04:50 UTC on October 19
▪︎ Geospace unsettled (kp 3)
▪︎ Solar wind speed record: 388 km/sec (Normal speed)
▪︎ density: 3.37 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 6.44 nT
▪︎ Neutron Counts today: - 2.0 % (Low)
▪︎ X-ray Solar Flare: C1 0152 UT Oct19
▪︎ Sunspot number: 54 (SN 57 October 18)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 20_2023
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 1400 UTC
There are currently 3 sunspot regions on the solar disk: AR3464, AR3465, AR3468
Total number of sunspots has decreased to 39 (9 of these are grouped into 3 active regions) NOAA forecasts for the next 24h: 60% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet to active levels (Kp4) for the past 24 hours. On October 19 solar wind speed reached a peak of 419 km/s (Elevated speed) at 02:01 UTC Total IMF reached 8 nT at 10:03 UTC
Aurora Oval Bz: 0.7 nT North
● Current Conditions at 04:50 UTC on October 19
▪︎ Geospace unsettled (kp 3)
▪︎ Solar wind speed record: 346.6 km/sec (Normal speed)
▪︎ density: 1.07 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.87 nT
▪︎ Neutron Counts today: - 2.0 % (Low)
▪︎ X-ray Solar Flare: C1 0239 UT Oct20
▪︎ Sunspot number: 39 (SN 54 October 19)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 1400 UTC
There are currently 3 sunspot regions on the solar disk: AR3464, AR3465, AR3468
Total number of sunspots has decreased to 39 (9 of these are grouped into 3 active regions) NOAA forecasts for the next 24h: 60% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet to active levels (Kp4) for the past 24 hours. On October 19 solar wind speed reached a peak of 419 km/s (Elevated speed) at 02:01 UTC Total IMF reached 8 nT at 10:03 UTC
Aurora Oval Bz: 0.7 nT North
● Current Conditions at 04:50 UTC on October 19
▪︎ Geospace unsettled (kp 3)
▪︎ Solar wind speed record: 346.6 km/sec (Normal speed)
▪︎ density: 1.07 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 2.87 nT
▪︎ Neutron Counts today: - 2.0 % (Low)
▪︎ X-ray Solar Flare: C1 0239 UT Oct20
▪︎ Sunspot number: 39 (SN 54 October 19)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 21_2023
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 0500 UTC on October 20
There are currently 4 sunspot regions on the solar disk: AR3464, AR3465, AR3468 and new region AR3469
Total number of sunspots has increased to 56 (9 of these are grouped into 4 active regions) NOAA forecasts for the next 24h: 60% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp2) for the past 24 hours. On October 20 solar wind speed reached a peak of 378 km/s (Normal speed) at 12:08 UTC Total IMF reached 10 nT at 17:43 UTC
Aurora Oval Bz: -8.47 nT South
● Current Conditions at 04:50 UTC on October 21
▪︎ Geospace active (kp 4)
▪︎ Solar wind speed record: 330 km/sec (Normal speed)
▪︎ density: 10.46 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 10 nT
▪︎ Neutron Counts today: - 2.5 % (Low)
▪︎ X-ray Solar Flare: C2 0030 UT Oct21
▪︎ Sunspot number: 56 (SN 39 October 20)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 0500 UTC on October 20
There are currently 4 sunspot regions on the solar disk: AR3464, AR3465, AR3468 and new region AR3469
Total number of sunspots has increased to 56 (9 of these are grouped into 4 active regions) NOAA forecasts for the next 24h: 60% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet levels (Kp2) for the past 24 hours. On October 20 solar wind speed reached a peak of 378 km/s (Normal speed) at 12:08 UTC Total IMF reached 10 nT at 17:43 UTC
Aurora Oval Bz: -8.47 nT South
● Current Conditions at 04:50 UTC on October 21
▪︎ Geospace active (kp 4)
▪︎ Solar wind speed record: 330 km/sec (Normal speed)
▪︎ density: 10.46 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 10 nT
▪︎ Neutron Counts today: - 2.5 % (Low)
▪︎ X-ray Solar Flare: C2 0030 UT Oct21
▪︎ Sunspot number: 56 (SN 39 October 20)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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PERLOU
The Living Force
Non @Don Cesar , je n'ai vu aucune aurore boréal et je n'en ai même pas entendu parlé... Désolée...
No @Don Cesar, I haven't seen any Northern Lights and I haven't even heard of them... Sorry...
No @Don Cesar, I haven't seen any Northern Lights and I haven't even heard of them... Sorry...
SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 22_2023
ALL QUIET. Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 0030 UTC on October 21 from Region 3467 (N14W26).
There are currently 6 sunspot regions on the solar disk: AR3464, AR3465, AR3467,AR3468, AR3469 and new region AR3470
Total number of sunspots has increased to 65 (18 of these are grouped into 6 active regions) NOAA forecasts for the next 24h: 50% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet to minor storm levels (Kp5) for the past 24 hours. On October 21 solar wind speed reached a peak of 358 km/s (Normal speed) at 03:38 UTC Total IMF reached 10 nT at 04:29 UTC
Aurora Oval Bz: 0.17 nT North
● Current Conditions at 05:00 UTC on October 22
▪︎ Geospace quiet (kp 2)
▪︎ Solar wind speed record: 301 km/sec (Normal speed)
▪︎ density: 2.62 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 7.53 nT
▪︎ Neutron Counts today: - 2.5 % (Low)
▪︎ X-ray Solar Flare: B5 0204 UT Oct22
▪︎ Sunspot number: 65 (SN 56 October 21)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
ALL QUIET. Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 0030 UTC on October 21 from Region 3467 (N14W26).
There are currently 6 sunspot regions on the solar disk: AR3464, AR3465, AR3467,AR3468, AR3469 and new region AR3470
Total number of sunspots has increased to 65 (18 of these are grouped into 6 active regions) NOAA forecasts for the next 24h: 50% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields
● Auroral Activity
The geomagnetic field has been at quiet to minor storm levels (Kp5) for the past 24 hours. On October 21 solar wind speed reached a peak of 358 km/s (Normal speed) at 03:38 UTC Total IMF reached 10 nT at 04:29 UTC
Aurora Oval Bz: 0.17 nT North
● Current Conditions at 05:00 UTC on October 22
▪︎ Geospace quiet (kp 2)
▪︎ Solar wind speed record: 301 km/sec (Normal speed)
▪︎ density: 2.62 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 7.53 nT
▪︎ Neutron Counts today: - 2.5 % (Low)
▪︎ X-ray Solar Flare: B5 0204 UT Oct22
▪︎ Sunspot number: 65 (SN 56 October 21)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
..
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EarthSky.org
SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 23_2023
There are currently 4 sunspot regions on the solar disk: AR3468, AR3469, AR3470 and new region AR3471
AR3464, AR3465 & AR3467 are gone
● Auroral Activity
Aurora Oval Bz: 4.91 nT North
● Current Conditions at 04:40 UTC on October 23
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 357 km/sec (Normal speed)
▪︎ density: 3.19 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 6 nT
▪︎ Neutron Counts today: - 2.7 % (Low)
▪︎ X-ray Solar Flare: B7 0420 UT Oct23
▪︎ Sunspot number: 48 (SN 65 October 22)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
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Solar activity has been at very low levels for the past 24 hours. No significant flare ocurred
There are currently 4 sunspot regions on the solar disk: AR3468, AR3469, AR3470 and new region AR3471
AR3464, AR3465 & AR3467 are gone
Total number of sunspots has idecreased to 48 (8 of these are grouped into 4 active regions) NOAA forecasts for the next 24h: 25% chance for C flares, 5% chance M flares and 1% chance for X flares. All regions have stable magnetic fields.
● Auroral Activity
The geomagnetic field has been at quiet to unsettled levels (Kp3) for the past 24 hours. On October 22 solar wind speed reached a peak of 404 km/s (Elevated speed) at 0158 UTC Total IMF reached 9 nT at 17:49 UTC
Aurora Oval Bz: 4.91 nT North
● Current Conditions at 04:40 UTC on October 23
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 357 km/sec (Normal speed)
▪︎ density: 3.19 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 6 nT
▪︎ Neutron Counts today: - 2.7 % (Low)
▪︎ X-ray Solar Flare: B7 0420 UT Oct23
▪︎ Sunspot number: 48 (SN 65 October 22)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
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SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 24_2023
There are currently 2 sunspot regions on the solar disk: AR3468, AR3470
AR3469 & AR3471 are gone
Total number of sunspots has decreased to 25 (5 of these are grouped into 2 active regions) NOAA forecasts for the next 24h: 20% chance for C flares, 1% chance M flares and 1% chance for X flares. All regions have stable magnetic fields.
● Auroral Activity
The geomagnetic field has been at quiet levels for the past 24 hours. On October 23
Solar wind speed reached a peak of 398 km/s at 1747 UTC Total IMF reached 8 nT at 2330 UTC
Aurora Oval Bz: -1.65 nT South
● Current Conditions at 04:40 UTC on October 24
▪︎ Geospace quiet (kp 0)
▪︎ Solar wind speed record: 390 km/sec (Normal speed)
▪︎ density: 0.92 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 5.61 nT
▪︎ Neutron Counts today: - 2.4 % (Low)
▪︎ X-ray Solar Flare: B6 2332 UT Oct23
▪︎ Sunspot number: 25 (SN 48 October 23)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
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THE SUN IS UNUSUALLY QUIET THIS WEEK said Dr. Ryan French. Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C2 event observed at 1958 UTC on October 23 from Region 3468 (S09W25).
We had an even quieter day today. There are almost no flares and tiny, boring sunspots said Dr. Alex Young
Solar activity is on the other side of the sun.
We had an even quieter day today. There are almost no flares and tiny, boring sunspots said Dr. Alex Young
Solar activity is on the other side of the sun.
There are currently 2 sunspot regions on the solar disk: AR3468, AR3470
AR3469 & AR3471 are gone
Total number of sunspots has decreased to 25 (5 of these are grouped into 2 active regions) NOAA forecasts for the next 24h: 20% chance for C flares, 1% chance M flares and 1% chance for X flares. All regions have stable magnetic fields.
● Auroral Activity
The geomagnetic field has been at quiet levels for the past 24 hours. On October 23
Solar wind speed reached a peak of 398 km/s at 1747 UTC Total IMF reached 8 nT at 2330 UTC
Aurora Oval Bz: -1.65 nT South
"This was a first for me," says Harlan Thomas, who photographed the display over Sibbald Pond west of Calgary, Alberta, on Oct. 19th. "The orange was sublime, just incredible. The pillars in the center stayed there glowing for more than 20 minutes."
Auroras get their colors from atoms and molecules in Earth's atmosphere. During geomagnetic storms, energetic particles rain down from space, striking the air and causing it to glow. Red, green, purple and even pink are common signs of excited oxygen and nitrogen.
The problem is, there's nothing in the air capable of making bright orange. Theoretically, nitrogen and oxygen (N2, N2+, and O2+) can produce emissions at orange wavelengths. However, these emissions are very weak compared to other colors produced by the same molecules. Orange should be overwhelmed.
The answer may be hiding in plain sight. Take another look at Thomas's photo. Bright red auroras appear on top, overlapping the green auroras lower down. Red and green mixing together may have produced the yellow-orange glow.
Aurora physicist Kjellmar Oksavik of the University of Bergen in Norway believes that's the correct explanation:
"The red auroras are formed by low-energy electrons colliding with atomic oxygen at high altitudes (200-400 km). Here, oxygen atoms are excited into a quantum state called O(1D), where they can emit a red photon at 630.0 nanometers," Oksavik says.
"The green auroras are formed by higher-energy electrons colliding with atomic oxygen at lower altitudes (100-150 km)," he continues. "Here, oxygen atoms are excited into a state called O(1S), where they emit a green photon at 557.7 nanometers."
"In between, there can be a mixing of the two processes, which fools the camera and eye to believe that it is orange. In reality, it is both red and green at the same time," he says.
"Another beauty of this picture," Oksavik points out, "is that it reveals the alignment of Earth’s magnetic field. The bright pillar in the center is a textbook example of a very tall auroral ray. These are aligned along the magnetic field and caused by a broad spectrum of electrons raining down from Earth’s magnetosphere. Slower electrons collide high up (red light), while more energetic electrons travel further down into a much denser atmosphere (green light)." Such a continuum of red to green should naturally produce a yellow-orange transition zone--no mystery molecule required. SpaceWeather.com
● Current Conditions at 04:40 UTC on October 24
▪︎ Geospace quiet (kp 0)
▪︎ Solar wind speed record: 390 km/sec (Normal speed)
▪︎ density: 0.92 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 5.61 nT
▪︎ Neutron Counts today: - 2.4 % (Low)
▪︎ X-ray Solar Flare: B6 2332 UT Oct23
▪︎ Sunspot number: 25 (SN 48 October 23)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ There are no significant coronal holes on the Earthside of the sun
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SOLAR CYCLE 25 ACTIVITY REPORT OCTOBER 25_2023
THE SUN IS STILL IN ITS EERIE LULL Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 14:50 UTC on October 24.
There are currently 3 sunspot regions on the solar disk: AR3468, AR3470 and new region AR3471
Total number of sunspots has increased to 34 (5 of these are grouped into 3 active regions) NOAA forecasts for the next 24h: 15% chance for C flares, 1% chance M flares and 1% chance for X flares. All regions have stable magnetic fields.
● Auroral Activity
The geomagnetic field has been at quiet levels for the past 24 hours. On October 24
Solar wind speed reached a peak of 400 km/s (Elevated speed) at 1840 UTC Total IMF reached 7 nT at 23:47 UTC
Aurora Oval Bz: 0.58 nT North
● Current Conditions at 04:00 UTC on October 25
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 331 km/sec (Normal speed)
▪︎ density: 6.5 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 3.63 nT
▪︎ Neutron Counts today: - 2.4 % (Low)
▪︎ X-ray Solar Flare: C4 0001 UT Oct25
▪︎ Sunspot number: 34 (SN 25 October 24)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ Solar wind flowing from these two coronal holes could reach Earth on Oct. 30th.
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THE SUN IS STILL IN ITS EERIE LULL Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C1 event observed at 14:50 UTC on October 24.
There are currently 3 sunspot regions on the solar disk: AR3468, AR3470 and new region AR3471
Total number of sunspots has increased to 34 (5 of these are grouped into 3 active regions) NOAA forecasts for the next 24h: 15% chance for C flares, 1% chance M flares and 1% chance for X flares. All regions have stable magnetic fields.
● Auroral Activity
The geomagnetic field has been at quiet levels for the past 24 hours. On October 24
Solar wind speed reached a peak of 400 km/s (Elevated speed) at 1840 UTC Total IMF reached 7 nT at 23:47 UTC
Aurora Oval Bz: 0.58 nT North
● Current Conditions at 04:00 UTC on October 25
▪︎ Geospace quiet (kp 1)
▪︎ Solar wind speed record: 331 km/sec (Normal speed)
▪︎ density: 6.5 p/cm³ (low density)
▪︎ Interplanetary Magnetic Field (IMF)
Bt: 3.63 nT
▪︎ Neutron Counts today: - 2.4 % (Low)
▪︎ X-ray Solar Flare: C4 0001 UT Oct25
▪︎ Sunspot number: 34 (SN 25 October 24)
▪︎ Spotless Days 2023 total: 0 days (0%)
▪︎ Solar wind flowing from these two coronal holes could reach Earth on Oct. 30th.
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