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URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 235
NWS Storm Prediction Center Norman OK
340 PM MDT Thu Jun 28 2018
The NWS Storm Prediction Center has issued a
* Tornado Watch for portions of
Northwestern South Dakota
* Effective this Thursday afternoon and evening from 340 PM until
1100 PM MDT.
* Primary threats include...
A few tornadoes likely
Widespread damaging winds and isolated significant gusts to 80
Scattered large hail and isolated very large hail events to 4
inches in diameter likely
SUMMARY...Severe thunderstorms, including a few supercells with
tornadoes and very large/damaging hail, are expected to develop over
the MT part of the watch area and ultimately move/spread into
portions of the Dakotas. The threat for severe wind will increase
as activity interacts with very rich low-level moisture and congeals
into clusters this evening.
The tornado watch area is approximately along and 80 statute miles
north and south of a line from 95 miles west of Miles City MT to 10
miles northeast of Baker MT. For a complete depiction of the watch
see the associated watch outline update (WOUS64 KWNS WOU5).
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.
OTHER WATCH INFORMATION...CONTINUE...WW 231...WW 232...WW
AVIATION...Tornadoes and a few severe thunderstorms with hail
surface and aloft to 4 inches. Extreme turbulence and surface wind
gusts to 70 knots. A few cumulonimbi with maximum tops to 650. Mean
storm motion vector 27035.