…There is a Marginal Risk of excessive rainfall over parts of the
Mid-Atlantic and Florida on Tuesday…
…There is a Critical Risk of fire weather over parts of the Northern
High Plains on Tuesday…
…There are Excessive Heat Warnings and Heat Advisories over parts of
Southern California and the Southwest…
Upper-level energy over the Mid-Atlantic will slowly advance off the
Eastern Seaboard by late Tuesday night. Lingering moisture and upper-level
energy will produce moderate to heavy rain over parts of the Mid-Atlantic.
Therefore, the WPC has issued a Marginal Risk (level 1/4) of excessive
rainfall over parts of the Mid-Atlantic through Wednesday morning. The
associated heavy rain will create localized areas of flash flooding,
affecting areas that experience rapid runoff with heavy rain.
In addition, showers and thunderstorms will develop over parts of Florida
producing areas of moderate to heavy rain. Therefore, the WPC has issued a
Marginal Risk (level 1/4) of excessive rainfall over parts of Florida
through Wednesday morning. The associated heavy rain will create
localized areas of flash flooding, affecting areas that experience rapid
runoff with heavy rain.
Meanwhile, a front extending from the Upper Great Lakes to the Southern
Plains moves eastward to the Northeast and weakens. On Tuesday, the front
will produce light rain over parts of the Upper Great Lakes and by Tuesday
afternoon, rain will expand along the boundary from the Ohio Valley to the
Tennessee Valley. Light rain moves into the Lower Great Lakes/Central
Appalachians by Wednesday and into the Northeast/Mid-Atlantic by Wednesday
evening. In addition, showers and thunderstorms will develop over parts of
Florida from Tuesday into Thursday.
Further, upper-level ridging over the Northern Intermountain Region into
the Northern Rockies will create warm air associated with down-sloping
air, strong gust wind, and dry fuels, prompting a Critical Risk of fire
weather over parts of the North High Plains on Tuesday.
Elsewhere, a front moving onshore over the Pacific Northwest will move
inland to the Great Lakes by Thursday. The system will produce scattered
showers over parts of the Pacific Northwest on Tuesday.
Moreover, the upper-level ridge over the Four Corners Region will create
high temperatures over Southern California and the Southwest, ranging from
the upper 90s to 110s. Low temperatures will be in the upper 80s to low
90s, providing little relief from the heat overnight. The temperatures
have prompted Excessive Heat Warnings and Heat Advisories over parts of
Southern California and the Southwest.
Record-breaking heat is expected across portions of the Southwest.
Remember, Heat is the Deadliest Weather Phenomenon in the U.S.! People
spending more time outdoors or in a building without cooling are at an
increased risk of heat-related illness. Visit www.weather.gov/safety/heat
and check local media and government websites for cooling center
information.
Ziegenfelder
Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php
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