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ACUS11 KWNS 040115
SWOMCD
SPC MCD 040114
NDZ000-040315-
Mesoscale Discussion 1421
NWS Storm Prediction Center Norman OK
0814 PM CDT Mon Sep 03 2018
Areas affected...Western and central ND
Concerning...Severe Thunderstorm Watch 366...
Valid 040114Z - 040315Z
The severe weather threat for Severe Thunderstorm Watch 366
continues.
SUMMARY...Severe weather threat for large hail and strong/damaging
wind gusts persists, as storms continue to develop across western
North Dakota during the next couple of hours.
DISCUSSION...At 01Z, mosaic radar imagery showed a broken band of
storms extending from extreme southwest ND to extreme southeast
Saskatchewan and adjacent Manitoba. The stronger storms and
potentially severe caliber so far have been developing across the
southern half of WW 366, potentially given closer proximity to the
greater instability (MLCAPE up to 2500-3000 J/kg). However, recent
trends indicated continued destabilization with northward extent
(moisture advection) and a stronger storm was forming in northeast
McKenzie County per radar imagery. Given effective bulk shear
vectors of 35-50 kt oriented near orthogonal to the surface trough
in western ND, semi-discrete supercells will remain a primary storm
mode in the short term (next 2 hours or so).
..Peters.. 09/04/2018
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...FGF...BIS...
LAT...LON 45950394 47710333 48980252 49009944 47799979 46610010
45940057 45950394
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