WW 347 SEVERE TSTM SD WY 210155Z – 210700Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 347
NWS Storm Prediction Center Norman OK
755 PM MDT Tue Jun 20 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest South Dakota
Northeast Wyoming
* Effective this Tuesday night and Wednesday morning from 755 PM
until 100 AM MDT.
* 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
SUMMARY...A cluster of storms, including embedded supercells and
small bowing segments, will spread across northeast Wyoming and
northwest South Dakota through the early morning hours. Large hail
of 1-2 inches in diameter and severe gusts of 60-70 mph can be
expected with these storms.
The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 15 miles south
southwest of Gillette WY to 35 miles south southeast of Lemmon SD.
For a complete depiction of the watch see the associated watch
outline update (WOUS64 KWNS WOU7).
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 344...WW 345...WW 346...
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 500. Mean storm motion vector
24035.
...Thompson
