[MCD] SWOMCD

Sat May 20 21:46:29 UTC 2006

ACUS11 KWNS 202143
SWOMCD
SPC MCD 202142 
WYZ000-UTZ000-IDZ000-NVZ000-202345-

MESOSCALE DISCUSSION 0909
NWS STORM PREDICTION CENTER NORMAN OK
0442 PM CDT SAT MAY 20 2006

AREAS AFFECTED...FAR WESTERN WY/SOUTHEAST ID/FAR NORTHERN
UT/NORTHEAST NV

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 202142Z - 202345Z

AN ISOLATED LARGE HAIL/STRONG WIND GUST THREAT WILL EXIST IN A
CORRIDOR FROM FAR WESTERN WY/SOUTHEAST ID INTO FAR NORTHERN UT AND
NORTHEAST NV INTO EARLY EVENING.

AS CU FIELD/THUNDERSTORMS CONTINUE TO BUILD THIS
AFTERNOON...OBJECTIVE ANALYSIS DEPICTS AN AXIS OF MODERATE
INSTABILITY FROM THE NORTHEAST GREAT BASIN OF NV INTO THE MOUNTAINS
OF FAR WESTERN WY...ALL WITHIN A BELT OF MODERATELY STRONG SOUTHWEST
MID LEVEL FLOW. WARM TEMPERATURES/AMPLE INSOLATION COUPLED WITH A
RATHER MOIST AIRMASS/HIGH PRECIP WATER ENVIRONMENT PER 12Z OBSERVED
RAOBS FROM ELKO/BOISE/RIVERTON/SALT LAKE CITY ARE SUPPORTIVE OF MOST
UNSTABLE CAPE VALUES OF 1500-2000 J/KG OR GREATER. IT APPEARS AN
ISOLATED LARGE HAIL/STRONG WIND GUST THREAT WILL EXIST WITH THE MORE
ROBUST STORMS INTO EARLY EVENING...HOWEVER A WATCH ISSUANCE SHOULD
NOT BE NEEDED.

..GUYER.. 05/20/2006

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...RIW...SLC...PIH...BOI...LKN...

43991102 44040986 43130962 41831158 40361528 41361585
42041538 42761280 