WW 691 SEVERE TSTM IA 231835Z – 240300Z
URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 691
NWS Storm Prediction Center Norman OK
135 PM CDT Sat Sep 23 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Iowa
* Effective this Saturday afternoon and evening from 135 PM until
1000 PM CDT.
* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY…Initially, a cluster of storms across north-central Iowa
may produce large hail and/or locally damaging winds. Additional
storms are expected to across the region later this afternoon into
evening.
The severe thunderstorm watch area is approximately along and 65
statute miles east and west of a line from 30 miles northwest of
Mason City IA to 25 miles south of Des Moines IA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS…
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
tornadoes.
&&
OTHER WATCH INFORMATION…CONTINUE…WW 690…
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
26030.
…Guyer
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