…A dangerous heat wave shifts from the Paciifc Northwest to the Great
Plains…
…Stormy conditions and flash flood potential across portions of the
Eastern U.S. this weekend…
…Potential Tropical Cylone Four will bring hazardous rainfall, strong
winds and life threatening storm surge inundation to portions of Florida
this weekend…
Upper-level ridging over the West will promote above average temperatures
across the region this weekend. Upper troughing over the East Pacific will
work in combination with the Western ridge to produce high temperatures in
the upper 90s to low 100s across much of the Northwest into the
Northern/Central Plains today. Warm overnight lows in the upper 60s to low
70s will represent 20-30 degree anomalies for much of the Northern Great
Basin/Rockies/High Plains tonight. The lack of overnight relief from the
heat will affect anyone without effective cooling and/or adequate
hydration. A small bit of mid-level energy will contribute to a severe
thunderstorm threat over the Northern Plains and Upper Midwest this
afternoon/evening. Damaging winds, isolated Flash Flooding and hail will
be the primary threats there. Shortwave energy spinning across the
northern periphery of a mid-level closed high pressure bubble will bring
some scattered showers, thunderstorms and cooler temperatures to the
northern tier of the country beginning on Sunday. Meanwhile, warm air
shifts into the Central Plains and Middle Mississippi Valley through early
next week.
Elsewhere, upper troughing over the Ohio/Tennessee Valley will promote
scattered thunderstorms up and down the East Coast today. Slight Risks of
Excessive Rainfall and Severe Thunderstorms are in effect from the
Tri-State area down to the Florida Panhandle. Damaging wind gusts and
Flash Flooding will be the primary concerns from these storms. Some
lingering showers and thunderstorms are expected on Sunday with only an
isolated threat of severe storms and Flash Flooding across the coastal
Mid-Atlantic/Northeast.
Tropical Depression Four is forecast to strengthen into a Tropical Storm
as it tracks west of the Florida Peninsula this weekend. Heavy rainfall,
strong winds and life threatening storm surge inundation are all possible
along the western coast of the state beginning today. Heavy rainfall,
strong winds and storm surge are also possible over northern Florida and
the Southeast U.S. Coast Sunday evening into early next week. Tropical
Storm Warnings and Storm Surge Watches are in effect along Florida’s Gulf
Coast while Tropical Storm Watches extend farther out across the other
Gulf Coast states. For more information go to hurricanes.gov.
Kebede
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
