Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
356 AM EDT Wed Jul 01 2020
Valid 12Z Wed Jul 01 2020 - 12Z Fri Jul 03 2020
...Flash flooding is possible with thunderstorms in the Middle Mississippi
Valley to Tennessee Valley today...
...Some precipitation and cooler temperatures remain over the Northwest,
but the Great Basin will see fire danger...
...Hot temperatures forecast for the Plains to Upper Midwest....
Today, scattered showers and thunderstorms are possible for parts of the
central and eastern U.S. A frontal boundary is forecast to help focus
rainfall amounts of 1 to 3 inches over portions of the Middle Mississippi
Valley and Tennessee Valley, which will lead to flash flooding concerns
there. Thus, a Slight Risk of excessive rainfall is in place and so are
Flash Flood Watches. A few storms could be strong to severe as well. An
upper-level low is expected to persist over the Northeast today and ease
offshore Thursday, and showers and thunderstorms are likely there.
Scattered showers and thunderstorms are forecast for portions of the
Plains to the Southeast on Thursday, but rainfall totals should generally
remain under an inch.
An upper-level low over the Northwest may lead to some additional
precipitation there today, but the rain and higher-elevation snow should
taper off for the late week. High temperatures are forecast to remain 10
to 20 degrees below average over the Northern Great Basin and Northern
Rockies underneath the upper low. Farther south, fire danger is expected
with gusty winds and low humidity, and a Critical Risk of fire weather is
in place today for portions of the Central Great Basin, with an Elevated
Risk toward the Southwest and toward the Central High Plains.
Upper-level ridging is forecast in the central U.S. between the upper lows
in the Northwest and Northeast. This will cause continued above normal
temperatures across the Plains and into the Upper Midwest and Upper Great
Lakes today, reaching the Northeast Thursday. Heat Advisories are in
effect for parts of the Southern and Central Plains as well as the Middle
and Lower Mississippi Valley. Hot temperatures should also continue over
Florida. Many record warm minimum temperatures could be set this morning
from the Southern Plains to Florida and in the Upper Midwest.
While the highest concentration of Saharan dust has dissipated, the next
round impacting the western and central Gulf Coast states today should
persist into late week. The primary impacts of the Saharan dust are hazy
skies during the day, locally reduced visibility, degraded air quality,
and the potential for vividly colorful sunrises and sunsets.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php