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Mesoscale Discussion 794 |
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MESOSCALE DISCUSSION 0794
NWS STORM PREDICTION CENTER NORMAN OK
0739 PM CDT SUN MAY 15 2011
AREAS AFFECTED...FAR EASTERN ID/FAR NORTHEAST UT/FAR WESTERN
WY/SOUTHWEST MT
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 160039Z - 160215Z
TSTM ENHANCED WIND GUSTS MAY PRODUCE WIND DAMAGE/GUSTS IN EXCESS OF
SEVERE LEVELS...ESPECIALLY THROUGH MID EVENING ACROSS FAR EASTERN
ID/FAR NORTHEAST UT INTO SOUTHWEST MT/FAR WESTERN WY.
CONVECTION HAS INCREASED WITHIN A FRONTAL BAND/CORRIDOR OF ASCENT
ACROSS EASTERN ID/EXTREME NORTHERN UT...WITH AN ADDITIONAL INCREASE
IN TSTMS EXPECTED OVER THE NEXT FEW HOURS. WHILE THE AIRMASS IS NOT
PARTICULARLY MOIST /PW VALUES GENERALLY A HALF INCH OR LESS/ OR
UNSTABLE...AMPLE HEATING/MIXING /REFERENCE 60S-70S F SURFACE
TEMPERATURES AND THE 00Z OBSERVED RAOB FROM SALT LAKE CITY/ IN
CONJUNCTION WITH STRONG/DEEP SOUTHERLY FLOW MAY YIELD VERY STRONG
WIND GUSTS THROUGH EARLY/MID EVENING. ALONG THESE LINES...A 53 KT
GUST WAS RECENTLY MEASURED IN POCATELLO ID IN PROXIMITY TO
TSTMS...WITH A 57 KT GUST ALSO RECENTLY NOTED AT LOGAN-CACHE AIRPORT
IN FAR NORTHERN UT.
..GUYER.. 05/16/2011
ATTN...WFO...BYZ...RIW...TFX...SLC...PIH...MSO...
LAT...LON 42641269 44861360 46291365 45021060 41711060 41341227
42641269
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