Nearly 120 million Americans were affected to some degree by a heatwave alert that hit parts of the country’s Midwest and Southeast.
A high pressure dome is expected today and tomorrow[Wednesday[mercredi[Mittwoch[mercredi]forecast the national weather forecast.
°C dans de nombreux endroits”,”text”:”Cette chaleur, alliée à un fort taux d’humidité, va probablement générer des températures bien supérieures à 37°C dans de nombreux endroits”}}”>This heat, combined with high humidity, is likely to produce temperatures well above 37°C in many places.She added.
In parts of Indiana, Kentucky and Ohio, mercury is expected to reach 43°C.
It is this zone of high atmospheric pressure that triggers extraordinary phenomena on its periphery, the explainedAFPAlex Lamers, US National Weather Expert.
In many cases, if you have a sufficiently severe heat wave, you will find thunderstorms and tornadoes, flash floods and torrential rain around your borderhe said.
At the northern edge of this heat dome, high temperatures collided with masses of cool air, generating severe thunderstorms Monday that left several hundred thousand people in the Midwest without power.
This cold front is likely to cause other destructive weather such as hail or strong winds.
Yellowstone Park evacuated and closed
Further west, images released by the National Parks Authority showed flood damage in Yellowstone Park.
All entrances to this vast park of almost 9000 square kilometers, which stretches across the states of Wyoming, Montana and Idaho (Northwest), remained closed until further notice due to the
extremely dangerous conditions caused by a flooded river and torrential rains.
Anyone still in the park was told to evacuate.
Flooding on the Yellowstone River is beyond all recordsreports the National Park Authority on its website.
The flooding has caused collapses or mudslides that have severed several sections of road
and multiple bridges may also be affectedShe says.
Heat wave, drought and fires
Heat wave warnings have also been issued in several regions of California and Arizona, where temperatures and chronic drought continue to increase the risk of fire.
Two fires, each covering more than 120,000 hectares, continued to burn in the state of New Mexico on Tuesday.
Firefighters have been struggling to contain the flames for weeks black fire and hermit peak which are fed by exceptionally dry vegetation.
New Mexico and much of the southwestern United States are being hit by a historic drought, and dozens of fires have already erupted in the region before summer even started.
Firefighters are finding that the frequency, size and intensity of forest and bush fires have steadily increased in recent years.
Six very difficult months
From this point of view, 2022 promises to be another huge year.
Given the current state of the vegetation and the fires, I fear that we have four, five, even six very difficult months ahead of us.California Orange County Fire Chief Brian Fennessy said recently.
Fires are common in the western United States but are becoming more intense due to global warming caused by human activity, including fossil fuels.
According to Alex Lamers, while it is difficult to establish a direct link between global warming and an isolated meteorological phenomenon, climate change is undeniably a complicating factor.
There is an element of bad luck in every weather phenomenon […] But all have climate as their background and, to put it simply, climate change is sucking the dice and increasing the likelihood of extreme events.he closes.