466
ACUS11 KWNS 252254
SWOMCD
SPC MCD 252254
COZ000-NEZ000-WYZ000-260030-
MESOSCALE DISCUSSION 1320
NWS STORM PREDICTION CENTER NORMAN OK
0554 PM CDT THU JUN 25 2026
AREAS AFFECTED...SOUTHEAST WYOMING AND ADJACENT COUNTIES OF
SOUTHWEST NEBRASKA AND NORTHEAST COLORADO
CONCERNING...SEVERE THUNDERSTORM WATCH 391...
VALID 252254Z - 260030Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 391
CONTINUES.
SUMMARY...A CONVECTIVE BAND WITH A WELL FORMED COLD POOL WILL
CONTINUE DEVELOPING SOUTHEASTWARD WITH OCCASIONAL SEVERE GUSTS INTO
SOUTHEAST WYOMING AND ADJACENT COUNTIES IN NEBRASKA/COLORADO.
DISCUSSION...OVER THE PAST FEW HOURS CONVECTION HAS EVOLVED INTO A
WELL FORMED LEADING CONVECTIVE BAND/TRAILING STRATIFORM RAIN
CONFIGURATION, AND WIND PROFILES ARE HELPING MAINTAIN UPDRAFTS ALONG
THE GUST FRONT. THE STORMS WILL LIKELY PERSIST FOR ANOTHER 2-3
HOURS WHILE MOVING SOUTHEASTWARD ACROSS SOUTHEAST WY WHERE SLIGHTLY
WARMER TEMPERATURES/MOISTURE PERSIST AT RELATIVELY HIGH ELEVATION,
COMPARED TO COOLER TEMPERATURES FARTHER EAST AT LOWER ELEVATION INTO
THE NE PANHANDLE. OCCASIONAL SEVERE OUTFLOW GUSTS OF 60-70 MPH WILL
BE THE MAIN THREATS THROUGH 01Z. WHILE EASTWARD PROGRESS OF THE
STRONGER STORMS WILL BE LIMITED BY WEAKENING BUOYANCY WITH EASTWARD
EXTENT INTO NE, THE STORMS COULD PERSIST INTO PARTS OF
NORTH/NORTHEAST CO WITH A LOW-END SEVERE WIND THREAT THROUGH ABOUT
03Z. SINCE THE POTENTIAL AREA AFFECTED OUTSIDE OF THE EXISTING
WATCH IN WY) IS SMALL, THE NEED FOR A DOWNSTREAM WATCH IS NOT CLEAR.
..THOMPSON.. 06/25/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...BOU...CYS...
LAT...LON 41910399 41470344 40650353 40450420 40570509 41240585
41510590 41900531 42390494 42630477 42630440 41910399
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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