USA.- The Weather Prediction Center of the National Weather Service, warned of a dangerous heat and unprecedented continues to affect the West.
In addition, the WPC, forecast unstable weather with possible flash flooding from isolated to dispersed the next few days in much of the center-south of the USA before spreading eastward into the valleys of ohio and tennessee for Saturday.
As well as, isolated strong to severe thunderstorms are possible this afternoon and evening from parts of the central plains to the upper midwest.
September starts with scorching temperatures throughout the west of USAas highs are forecast to threaten once again on a daily basis and even monthly records headed into Labor Day weekend.
An anomalous upper level ridge anchored over the central Great Basin is to blame for these well above average temperatures.
Highs in the upper 90s and triples. Digits are expected this afternoon across much of the West, stretching from southwestern and inland California north to the northern Great Basin and northern Rocky Mountains.
Excessive heat warnings and heat warnings They currently include much of California, Nevada, Oregon, Washington, and Idahowhere these dangerously high temperatures are likely to increase the threat of heat-related illnesses.
A dangerous heat wave will continue to impact much of the Western US through this weekend and into the middle of next week. Critical fire weather, including low relative humidity and gusty winds, is forecast from northern California into Montana. https://t.co/VyWINDBEpn pic.twitter.com/rG8Gv1aMFr
— National Weather Service (@NWS)
September 2, 2022
For much of this region, no relief is expected over the holiday weekend. In fact, temperatures are forecast to rise to near 110 degrees sunday on interior sections of California.
Conversely, cooler weather will enter the Pacific Northwest by Saturday, shifting the late summer heat east to the northern high plains this weekend. Highs around the century mark more central and eastern Montana will equate to 20 to 30 degrees above average compared to climatology.
This pattern of hot and dry climate it can also create the conditions for wildfires to spread out of control.
Red flag warnings have been issued from far northern California across the northern Great Basin to further highlight the concern.
Residents and visitors from throughout the western United States are urged USA Follow heat safety and fire restrictions, monitor friends and family who may be more vulnerable to excessive heat, and heed warnings issued by local forecast offices.
ohio and tennessee
A stagnant, tropical air mass located throughout the southern tier is forecast to lead to additional chances of heavy rain and flooding sudden today before an upper-level trough creeping east extends the threat into the Ohio and Tennessee valleys on Saturday.
More specifically, the potential for scattered heavy rainfall and flash flooding has led to a slight (level 2/4) risk of excessive rainfall through tonight over the Texas Big Bend, the central Florida Panhandle, and an area stretching from southwestern Missouri to eastern Texas.
For this weekend, a cold approaching the channel front and upper level will allow moisture flow to the north in much of the valleys of ohio / tennessee and, finally, the Appalachians and the northern Mid-Atlantic, while also focusing on the southern Texas and the western Gulf coast.
As a result, there is a slight risk of excessive precipitation has been issued for Saturday over western Kentucky and Tennesseeas well as a large area from the central Gulf Coast to the Edwards Plateau of Texas.
It is predicted that the chances of Heavy rains will persist in South Texas on Sunday. Meanwhile, a monsoonal surge of moisture (aided in part by Tropical Storm Javier over the eastern Pacific) may give rise to downpours capable of producing flash flooding in parts of southern Arizona today and a much broader section of the southwest on Saturday.
Elsewhere, advancing cold fronts could lead to severe electric storms from the central plains to the upper Midwest. big hail and damaging wind gusts are expected to be the main threat.
Hot and above average temperatures will be found before this cold front and will fuel the aforementioned storms.
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Highs in the 1990s are forecast from the Central High Plains to the Midwest. Somewhat warm temperatures for this time of year they are also forecast in the Great Lakes, Northeast and mid-Atlantic through this weekend, with highs in the upper 80s and lower 90s.