The severe weather threat for Severe Thunderstorm Watch 248, 249
SUMMARY...Gusty winds,along with some hail threat, will be noted
with a squall line as it propagates east over the next few hours.
New severe thunderstorm watch is not currently anticipated.
DISCUSSION...Linear MCS has evolved over the western Dakotas late
this evening in advance of a short-wave trough that is ejecting
northeast across eastern MT/WY. Over the last half hour or so, it
appears that an MCV may be forming over Perkins County SD, just
north of Prairie City. With an expanding precip shield in the wake
of the squall line, this activity should continue to progress east
at roughly 30kt. Gusty winds remain the primary threat but the
downstream air mass is not as buoyant and it would appear this
activity has peaked in intensity. At this time a new ww is not
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