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Microsoft
Notice: It
#OndaGélida #México will affect the 12-15/Nov with cold to very cold environment in entities of North, northeast, center and Orient.
temperatures from 10 ° to-10 º C.
#Chih #Dgo #Coah #NL #Tamps #SLP #Gto #Qro #Hgo #EdoMex #CDMX #Pue #Ver 🌬 Violent "north" snowfalls of 110-140 km/h.
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Microsoft
CAUTION: It
#TiempoInvernal will affect Mexico from next Monday, November 12th due to the inversion of Arctic air, causing
#OndaGélida Frost, snowfall, ice and very low temperatures over north, northeast, Central and eastern states.
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Microsoft
#MeteoredMX It is intense winter time since this weekend, strengthening next week. This is due to the "East Pacific Oscillation". Our meteorologist José Martín Cortés (
@InfoMeteoro) explains:
Anteriormente, se habló de las oscilaciones del Atlántico Norte y Ártica, las cuales juegan un rol muy importante en los movimientos de masas de aire polar, así como sus trayectorias hacia latitudes menores como Estados Unidos y México durante el semestre relativo al invierno, es decir, octubre a marzo.
Previously, the North Atlantic and Arctic oscillations were discussed, which play a very important role in polar air mass movements, as well as their trajectories towards lower latitudes such as the United States and Mexico during the winter semester, that is, , October to March.
On this occasion another oscillation will be described, which significantly influences the entry of Arctic air and even, from Siberia, on the other side of the world, known as the Eastern Pacific Oscillation (EPO).
This pattern consists in the pressure difference between the Northeast Pacific, near Alaska, and the subtropical region of the Eastern Pacific in the vicinity with Hawaii, there being two phases.
Positive: Warm air flows in the direction of the west coast and over much of the United States. This configuration traps the polar cold far to the north, while over the central-western United States and southern Canada, temperatures dominate with values above normal.
Negative: When a warm anticyclone forms over the northeast Pacific and enters as a dorsal towards Alaska, it favors a very cold pattern over North America, causing a polar airflow that can cross from Siberia towards Canada, the United States and eventually, reach Mexico.
EPO
Valores en color azul, altura geopotencial (por debajo de lo normal) desde Canadá, cruzando Estados Unidos hasta México, indicando incursión de aire Ártico.
Specifically, what effects can it cause in Mexico?
Just the negative phase is what brings winter weather conditions to our country, and according to the forecast this could happen next week with an invasion of Arctic-Siberian air generating a drastic thermal decline in the country and violent "North" over the Gulf of Mexico.
In general, this oscillation can lower temperatures of 10-30 ° C below the climate, generating a cold to very cold environment, leading to the formation of frost. Commonly, the mass of air has a small amount of water vapor, so frost can be black (absence of moisture burns plants due to low temperatures) and thermal descent more drastically, since this type of air has the ability to cool down quickly
On the other hand, it is accompanied by a large rise or increase in atmospheric pressure that, when reaching the Gulf of Mexico, generates violent "North" events, whose intensities can easily exceed 100 km / h. If the cold mass is combined with moisture, it would result in extensive areas of snowfall as well as the formation of ice by fog (rime) and the presence of freezing or icy rain which is the precipitation of super-cooled liquid water that, when touched by a surface , it freezes quickly.
When the Arctic, North Atlantic, and Eastern Pacific oscillations enter the negative phase at the same time, the aforementioned effects may become even more severe and widespread over North America, including Mexico. In the next few days, we will be monitoring this possible "winter weather" favored by the negative phase of the "EPO" that would affect our national territory between Monday 12 and Thursday 15 November.
Stay tuned for updates on Meteored and take preventive measures.
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Microsoft
Important:
#OndaGélida from 12-15/Nov will cause
#TiempoInvernal in Mexico with cold atmosphere to very cold, snowfall, rain and "violent" North
This situation is of risk for the population and animals, to carry out preventive measures. For details, follow the "thread"