September 17 National Weather Roundup

By: associated press
By: associated press

Weather Summary for Thursday September 17, 2009

Across the eastern two-thirds of the country, the nearly
stationary low pressure system over Arkansas persisted yesterday.
This system brought many showers and thunderstorms from the
Southern Plains eastward into the Southeast. Heavy rainfall from
this system occurred yesterday with many areas receiving 3 to 5
inches. Flash flooding also continued to be an issue across many
portions of Arkansas, southwestern Tennessee, and northwestern
Mississippi from this system. Showers and storms were also found
yesterday across portions of the Mid-Atlantic with this area
generally recording rainfall amounts of 0.20-0.50 inches.
Elsewhere, a few light rain showers were found across Pennsylvania
and New York while clear conditions persisted across much of the
North Central U.S. with high pressure overhead.
Across the West, scattered showers and thunderstorms continued across the Southern Rockies. An upper level low pressure system over northeastern Arizona triggered the storms from eastern Arizona through New Mexico, Colorado, and eastern Utah yesterday. A few storms produced hail and gusty winds yesterday with reports of 0.75 to 1.75 inch hail coming in from New Mexico and far western Texas. Scattered showers could also be found across the Pacific Northwest. A cold front moved inland which brought showers to western Oregon and western Washington. Cooler air settled in behind the front, while the remainder of the West stayed mild.

HIGHEST TEMPERATURE (DEGREES F)............109 Death Valley, CA
HIGHEST HEAT INDEX (DEGREES F).............108 Harlingen, TX
LOWEST TEMPERATURE (DEGREES F)..............31 Bellemont, AZ
LOWEST WIND CHILL (DEGREES F)...............27 Ely, NV
HIGHEST WIND GUST (MPH).....................60 La Feria, TX

In 1960, 23 inches of snow at Rawlins, WY and over 20 at Lander, WY set new early season snowfall records for both locations.
In 1963, Yuma, AZ picks up its most intense rainfall since 1909 as 2.43 inches of rain falls in 3 hours from Tropical Storm
In 1971, 21 inches of snow buries Boulder, CO. Denver picked up 15.6 inches of the white stuff. The snow was very wet, downing lots of tree limbs and power lines. Record cold followed the storm.

Filed by: Telvent DTN

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