The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Click for Watch Status Reports
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 403
NWS Storm Prediction Center Norman OK
315 PM EDT Thu Jul 29 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern West Virginia
* Effective this Thursday afternoon and evening from 315 PM until
1000 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Thunderstorms are developing along a weak front stretching
across central Ohio into western Pennsylvania. Those storms will
spread southward this afternoon and early evening, posing a risk of
damaging wind gusts and hail.
The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 50 miles west northwest
of Cincinnati OH to 45 miles east of Latrobe PA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).
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 401...WW 402...
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