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Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
346 AM EDT Sat Jul 03 2021

Valid Sat Jul 03 2021 - Mon Jul 05 2021

...Excessive heat to continue across the Northwest and Northern Plains...

...Locally heavy rain likely along a frontal boundary draped across the
Gulf Coast with monsoonal moisture likely across the Southwest and
southern High Plains...

...Slight risk for severe thunderstorms from northeast Colorado into
western Nebraska...

Excessive heat is expected to continue through the Holiday weekend across
the Northwest and Northern parts of the country. Saturday should be the
hottest, with daytime highs well into the 90s or low 100s for many from
the northern Great Basin into the Northern Plains and Upper Midwest. A
handful of daily record highs are possible across these regions as well on
Saturday. By Sunday and Monday, the heat should subside somewhat, however
temperatures are still expected to be well above normal for some locations
which would only prolong the heat stress. Excessive heat warnings and heat
advisories remain in effect for parts of the Northwest and eastern Montana.

Showers and thunderstorms are likely along a nearly stationary frontal
boundary which should settle along the Gulf Coast through much of the
period. Moderate to locally heavy to excessive rainfall is possible from
northern Florida to eastern Texas. Farther west, monsoonal moisture will
bring diurnally driven showers and storms into parts of the Southwest and
southern High Plains each day. Again, there is a threat for moderate to
locally heavy rainfall and isolated flash flooding particularly for parts
of southern Arizona where WPC has a slight risk for excessive rainfall on
Saturday. Elsewhere, scattered showers and storms will extend northward
into the central High Plains and the Dakotas along a slow moving warm
front and ahead of a cold front dropping into the Northern tier states.
SPC highlights a small area from northeast Colorado into Western Nebraska
within a slight risk for severe weather. Across the Northeast, unsettled
weather will continue as a surface low deepens offshore.

While the Northern and Western parts of the country continue to bake, the
remainder of the U.S. should be more comfortably near or below normal
through the weekend. The greatest below normal anomalies should center
across parts of the southern High Plains, and especially the Northeast on
Saturday where daytime highs 10 to 20 degrees below normal are possible
with daily record low max temps challenged. The southern and eastern
states should warm up by the Fourth of July holiday with much above normal
temperatures seeping into the Midwest/Ohio Valley and Mid-Atlantic states
by Monday.

Santorelli

Graphics available at:
NWS Weather Prediction Center
Storm Prediction Center
United States 2 Day Forecast

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