MD 1170 CONCERNING SEVERE THUNDERSTORM WATCH 342… FOR FAR EASTERN SOUTH DAKOTA AND WESTERN NORTH DAKOTA
Mesoscale Discussion 1170
NWS Storm Prediction Center Norman OK
0912 PM CDT Mon Jun 19 2023
Areas affected...Far Eastern South Dakota and Western North Dakota
Concerning...Severe Thunderstorm Watch 342...
Valid 200212Z - 200315Z
The severe weather threat for Severe Thunderstorm Watch 342
continues.
SUMMARY...Severe threat is likely to develop across western North
Dakota over the next hour. Wind damage and large hail will be
likely, and weather watch issuance will be needed soon.
DISCUSSION...Latest radar imagery from Glasgow, Montana shows an
intense supercell in far eastern Montana, which produced an 83 mph
wind gust within the last half hour. This storm is associated with a
shortwave trough and vorticity max over eastern Montana, which will
continue to move northeastward into western North Dakota this
evening. Moderate instability, strong deep-layer shear and steep
mid-level lapse rates will support continued supercell development
with a potential for large hail. Wind damage will also be likely.
..Broyles/Thompson.. 06/20/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BIS...BYZ...GGW...
LAT...LON 46580287 46260398 46430449 46960445 47750296 48090219
48130169 47820136 47200153 46580287
