Nov 21 National Weather Roundup

By: associated press
By: associated press

Weather Summary Saturday, Nov. 21

NATIONAL WEATHER SUMMARY:

In the East, high pressure and quiet weather will be the main story for most of the region. The exception will be along the Gulf
Coast and into the Southeast, where periods of rain and embedded
thunderstorms will accompany a low pressure system that will track
from off the coast of Louisiana this afternoon to the Florida
Panhandle by noon tomorrow. Rain will become heavy at times with
some areas of flash flooding likely to occur along the Gulf Coast,
where amounts may exceed 1.5 inches in some areas. Most of the
region is expected to see rainfall amounts from 0.40 to 0.80 inch.
Thunderstorms are most likely along the immediate Gulf Coast, but
any storms should not be strong.
Across the central U.S., the winds are picking up today as gusts of 30 to 40 mph are expected through this afternoon with the
blustery winds likely to continue tonight, although weakening some
into this evening. With the southerly winds will also come an
increase in moisture and light rain and drizzle is expected to
develop tonight and last into tomorrow across the upper Midwest and
the central Plains. Rain will not be all that heavy and amounts of
0.10 inch or less will be the norm. The rest of the region will
experience fair skies and quiet weather.
In the West, another potent storm system is approaching the Pacific Northwest and heavy rain is expected to increase in
coverage tonight. Periods of rain will continue into tomorrow but
start to taper off by later in the day. Amounts will range from
0.10 to 0.30 inch across the interior with 1.00 to 2.00 inches west
of the Cascades from northwest California to Washington. Snow will
be heavy in higher elevations of the Cascades where 8 to 16 inches
is expected as a storm total above 2,500 feet, while up to 2.5 feet
is possible in the highest elevations of northern Washington.
Visibilities will drop to near zero in the higher elevations as
wind gusts to 60 mph are expected while gusts of 30 to 40 mph are
likely in the lower elevations. Wind gusts to 60 mph can also be
expected along the immediate coasts of Washington and Oregon
through tomorrow morning before the winds subside.

WEATHER EXTREMES SO FAR TODAY:

HIGHEST TEMPERATURE (DEGREES F).............84 Punta Gorda, FL
............................................84 Boca Raton, FL
............................................84 Tamiami, FL
HIGHEST HEAT INDEX (DEGREES F)..............90 Key West, FL
LOWEST TEMPERATURE (DEGREES F)...............7 Gunnison, CO
LOWEST WIND CHILL (DEGREES F)...............-9 Big Piney, WY
HIGHEST WIND GUST (MPH).....................53 Livingston, MT
............................................53 Casper, WY
............................................53 Mammoth Lakes, CA
HIGHEST PRECIPITATION (INCHES)............1.08 Lake Charles, LA

ON THIS DATE IN HISTORY:

In 1967, excessive rains drenched southern California, causing the worst flooding in 33 years. Los Angeles received around 8
inches of rain, while 14 inches fell in the mountains.
In 1985, Hurricane Kate made landfall near Mexico Beach,
Florida, with sustained winds of 100 mph. It was one of the latest
known hurricanes to the hit the U.S.
In 1992, a large tornado outbreak began in the south-central and southeastern U.S., lasting three days. It was the third-largest outbreak in recorded history and one of the longest continuous
outbreaks ever. Six tornadoes were spawned in the Houston metro
area, with three on the ground at one time in Harris County. An F4
struck the eastern suburbs of Houston, destroying 200 homes and
damaging 1,000 more. Alabama and Mississippi were hit by 23
tornadoes, with an F4 tracking 128 miles through seven counties in
Mississippi.

Filed by Telvent DTN


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