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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 327
NWS Storm Prediction Center Norman OK
100 AM CDT Sun Aug 5 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast South Dakota
* Effective this Sunday morning from 100 AM until 700 AM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated very large hail events to 2 inches in diameter possible
SUMMARY...Strong to severe thunderstorms are expected to continue
overnight across southeast South Dakota and spread southeastward
into portions of northwest Iowa and southwest Minnesota. Isolated
large hail will be possible, along with severe-caliber winds,
particularly if storms increasingly organize into a cluster early in
The severe thunderstorm watch area is approximately along and 40
statute miles north and south of a line from 20 miles south
southwest of Mitchell SD to 35 miles south of Worthington MN. 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
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