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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 256
NWS Storm Prediction Center Norman OK
735 PM CDT Mon Jul 2 2018
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Extreme west central Minnesota
Southern North Dakota
Northern South Dakota
* Effective this Monday night and Tuesday morning from 735 PM
until 200 AM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
A tornado or two possible
SUMMARY...A couple of corridors of severe storm development are
expected to persist into the early overnight hours, now starting
across southwestern North Dakota and northeastern South Dakota.
Other storms could eventually move into northwestern South Dakota
from Montana later tonight. The storm environment will be
sufficient for supercells with large hail and damaging winds, and an
isolated tornado or two may also occur this evening across
northeastern South Dakota and vicinity.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 35 miles northwest of
Buffalo SD to 100 miles east northeast of Aberdeen SD. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU6).
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...
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 550. Mean storm motion vector