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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 140
NWS Storm Prediction Center Norman OK
140 AM CDT Tue May 4 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Far Southern Illinois
* Effective this Tuesday morning from 140 AM until 800 AM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...A cluster of storms will continue to organize and
accelerate east-northeastward overnight across the region. Damaging
winds can be expected through the early morning hours, along some
potential for isolated large hail and/or a brief tornado.
The severe thunderstorm watch area is approximately along and 80
statute miles north and south of a line from 10 miles southwest of
Walnut Ridge AR to 20 miles southeast of Clarksville TN. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
OTHER WATCH INFORMATION...CONTINUE...WW 137...WW 138...WW 139...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector