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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 325
NWS Storm Prediction Center Norman OK
525 PM CDT Tue Jun 13 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme western Iowa
* Effective this Tuesday afternoon and Wednesday morning from 525
PM until 100 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Isolated damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...Multiple episodes of thunderstorms are expected to affect
the watch area through this evening, moving rapidly northeastward
through a favorably moist and unstable air mass. Damaging winds and
hail are likely, and even with likely clustered mode by that time, a
tornado cannot be ruled out in the relatively moist air mass of
The severe thunderstorm watch area is approximately along and 60
statute miles either side of a line from 35 miles south of Russell
KS to 30 miles northeast of Norfolk NE. For a complete depiction of
the watch see the associated watch outline update (WOUS64 KWNS
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 323...WW 324...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector