SPC MD 911



MD 0911 CONCERNING SEVERE THUNDERSTORM WATCH 252… FOR CENTRAL INTO NORTHEAST MT

MD 0911 Image


Mesoscale Discussion 0911
NWS Storm Prediction Center Norman OK
0548 PM CDT Thu Jun 10 2021

Areas affected...Central into northeast MT

Concerning...Severe Thunderstorm Watch 252...

Valid 102248Z - 110015Z

The severe weather threat for Severe Thunderstorm Watch 252
continues.

SUMMARY...The threat for isolated severe hail and wind continues in
the short term, with a more organized wind threat possibly evolving
this evening.

DISCUSSION...At 2245Z, a cluster of strong to potentially severe
convection is ongoing across central MT, in advance of a strong
shortwave midlevel trough that is approaching the northern Rockies.
In the short term, strong multicell or occasional supercell
structures capable of isolated hail and strong wind gusts will be
the primary threat, supported by moderate MUCAPE and effective shear
of 35-45 kt. 

A little later this evening, a more organized severe wind threat may
develop, as outflows consolidate and an accelerating cold front
moves into the region. As this occurs, one or more organized
clusters could move from central into northeast MT, potentially
capable of producing swaths of severe wind gusts, in addition to a
continued threat of isolated hail.

..Dean.. 06/10/2021

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...BYZ...GGW...TFX...

LAT...LON   46080950 47720889 48870790 48970718 48980622 47930594
            46990589 46510625 45880771 45850911 46080950 

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