The Weather Prediction Center

Short Range Forecast Discussion

[Abbreviations and acronyms used in this product]
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Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
343 PM EDT Sun Aug 18 2019

Valid 00Z Mon Aug 19 2019 - 00Z Wed Aug 21 2019

...Scattered showers and thunderstorms will continue across the
eastern half of the United States...

...Heavy rainfall and localized flooding expected for portions of
northern Florida...

...Potentially record-setting heat persists across much of the
southern tier and stretching into the East...

...Elevated fire conditions for portions of the West...

Scattered showers and thunderstorms are currently forming ahead of
a cold front moving through the Midwest today and toward the Lower
Great Lakes and Ohio Valley on Monday. Farther south, the front is
expected to stall in the Central Plains and Middle Mississippi
Valley. Some storms could be severe, especially from lower
Michigan to southern Illinois today, where the Storm Prediction
Center has outlooked a Slight Risk of severe weather. Locally
heavy rainfall and isolated flash floods are also possible with
these storms, which will spread toward the Northeast on Monday. By
Tuesday, another cold front will approach the central U.S. and
bring another round of possible severe weather.

A weakening frontal boundary will remain over the Southeast U.S.
this evening, with lower pressures at the surface. Gulf moisture
flowing into the vicinity of these features will lead to the
potential for heavy rainfall over parts of northern Florida
through Monday, which has already received an abundant amount of
rain in recent days. Slight Risks of excessive rainfall/flash
flooding are in place for portions of the Florida panhandle today
and Monday. Showers and thunderstorms are also possible for the
Central Gulf Coast and into the Carolinas.

Above average temperatures are forecast to be widespread for much
of the country, with potential for record daily highs to be set
across the Northeast and southern High Plains on Monday. High
temperatures are forecast to reach the triple digits across
western Texas, with widespread 90s across the Northeast. Excessive
Heat Warnings and Watches are in place for the Southwest as well.
Meanwhile, below average temperatures are expected in the Northern
Plains behind a cold front on Tuesday.

As low humidities combine with gusty winds in the West, portions
of the Great Basin and the Central/Northern Rockies are under Red
Flag Warnings. No notable precipitation is expected for the West,
despite it being typical monsoon season.


Graphics available at

Last Updated: 343 PM EDT Sun Aug 18 2019