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URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 251
NWS Storm Prediction Center Norman OK
225 PM MDT Thu Jun 10 2021
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Western North Dakota
* Effective this Thursday afternoon and evening from 225 PM until
900 PM MDT.
* Primary threats include...
A few tornadoes and a couple intense tornadoes possible
Widespread large hail and scattered very large hail events to 4
inches in diameter likely
Scattered damaging wind gusts to 70 mph likely
SUMMARY...Intense thunderstorms including supercells will likely
rapid develop through mid/late afternoon from east-central/northeast
Montana into western South Dakota. Of greatest concern as far as
intense supercells and a tornado risk will be those storms occurring
near a west-east warm front across the region, where low-level
moisture/shear will be maximized. A strong tornado is possible.
The tornado watch area is approximately along and 80 statute miles
north and south of a line from 10 miles north northwest of Wolf
Point MT to 70 miles east southeast of Williston ND. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
REMEMBER...A Tornado Watch means conditions are favorable for
tornadoes and 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.
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 4 inches. Extreme turbulence and surface wind
gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean
storm motion vector 22020.