ZCZC SPCSWOMCD ALL
ACUS11 KWNS 262348 
SPC MCD 262348 
NEZ000-SDZ000-WYZ000-270115-

Mesoscale Discussion 0756
NWS Storm Prediction Center Norman OK
0648 PM CDT Wed May 26 2021

Areas affected...Parts of the Nebraska Panhandle

Concerning...Severe Thunderstorm Watch 207...

Valid 262348Z - 270115Z

The severe weather threat for Severe Thunderstorm Watch 207
continues.

SUMMARY...Strong to severe thunderstorm development remains possible
northwest through west of Alliance, NE through around 7-8 PM MDT,
before beginning to diminish.  A new severe weather watch probably
will not be needed, but trends will continue to be monitored.

DISCUSSION...Moderate to strong boundary-layer instability remains
largely confined to a narrow corridor of stronger daytime heating,
within surface troughing to the lee of the Laramie Mountains into
western portions of the Nebraska Panhandle.  As a significant short
wave trough continues to progress across and east of the northern
Rockies into this evening, this environment could still support
additional strong/severe storm development, including a supercell or
two, another couple of hours.  However, toward 01-03Z, the southward
progression of a surface cold front, coupled with diurnal
boundary-layer cooling probably will result in the onset of
diminishing convective trends.

..Kerr.. 05/26/2021

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

ATTN...WFO...LBF...UNR...CYS...

LAT...LON   42990299 42550221 42040210 41650287 41590398 41650458
            42310407 43000404 42990299 

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