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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 257
NWS Storm Prediction Center Norman OK
535 AM CDT Fri Jun 11 2021
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
* Effective this Friday morning from 535 AM until 1100 AM CDT.
* Primary threats include...
Isolated damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...A line of storms is expected to develop southeastward
across northeast Nebraska through mid morning, with an accompanying
threat for isolated damaging winds and large hail.
The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 10 miles west northwest
of Yankton SD to 45 miles south southeast of Norfolk NE. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7).
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 255...WW 256...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector