799
ACUS11 KWNS 232256
SWOMCD
SPC MCD 232256
WYZ000-UTZ000-IDZ000-NVZ000-240030-
MESOSCALE DISCUSSION 2106
NWS STORM PREDICTION CENTER NORMAN OK
0556 PM CDT SUN AUG 23 2026
AREAS AFFECTED...NORTHERN UTAH...SOUTHEAST IDAHO AND FAR SOUTHWEST
WYOMING
CONCERNING...SEVERE THUNDERSTORM WATCH 619...
VALID 232256Z - 240030Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 619
CONTINUES.
SUMMARY...SEVERE WIND GUSTS AND HAIL REMAIN POSSIBLE WITH STRONG TO
SEVERE STORMS ACROSS UT/ID AND FAR WESTERN WY THIS EVENING.
DISCUSSION...ACROSS WW 619, A BAND OF STRONG TO SEVERE STORMS HAVE
MATURED ACROSS EASTERN ID WITH MORE ISOLATED STRONG STORMS ONGOING
OVER NORTHWEST UT LATE THIS AFTERNOON. A MODESTLY MOIST, HOT AND
MODERATELY UNSTABLE AIR MAS REMAINS IN PLACE AHEAD OF THESE STORMS
WHICH SHOULD CONTINUE TO SUPPORT THEM OVER THE NEXT SEVERAL HOURS.
STEEP LOW-LEVEL LAPSE RATES WILL PRIMARILY FAVOR SEVERE WIND GUSTS,
BUT ENHANCED MID-LEVEL FLOW AT THE BASE OF THE NORTHERN ROCKIES
UPPER TROUGH IS SUPPORTING SOME CELLULAR STRUCTURES. HAIL IS
POSSIBLE, ESPECIALLY WITH ANY PERSISTENT SUPERCELLS.
EXPECTATIONS ARE FOR CONVECTION TO GRADUALLY SPREAD NORTHEASTWARD
ACROSS UT AND FAR SOUTHWESTERN WY INTO THIS EVENING. SOME CLUSTERING
IS POSSIBLE, BASED ON RECENT CAM SOLUTIONS. THIS APPEARS MOST LIKELY
OVER NORTHERN UT INTO SOUTHWEST WY. THIS COULD SUPPORT A LOCALIZED
CORRIDOR OF MORE CONCENTRATED SEVERE WIND GUSTS LATER THIS EVENING.
GIVEN THE ONGOING STORMS AND A GENERALLY FAVORABLE ENVIRONMENT, THE
SEVERE RISK CONTINUES FOR MUCH OF WW619.
..LYONS.. 08/23/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...RIW...SLC...PIH...LKN...
LAT...LON 40841426 42451323 42961137 42831076 42161028 41791002
41361001 40651007 40011066 39891240 39851330 39921368
40001404 40841426
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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