SWOMCD
SPC MCD 202006
NVZ000-IDZ000-ORZ000-202130-
MESOSCALE DISCUSSION 0326
NWS STORM PREDICTION CENTER NORMAN OK
0306 PM CDT TUE APR 20 2010
AREAS AFFECTED...CENTRAL/NORTHERN NV INTO SOUTHEAST ORE/SOUTHWEST ID
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 202006Z - 202130Z
STRONG/NEAR SEVERE WIND GUSTS AND SMALL HAIL WILL BE POSSIBLE ACROSS
NORTHERN/CENTRAL NV AND SURROUNDING PORTIONS OF SOUTHEAST
ORE/SOUTHWEST ID THIS AFTERNOON. A SEVERE TSTM WATCH IS NOT
EXPECTED.
AMPLE LARGE SCALE FORCING FOR ASCENT AHEAD OF THE WEST COAST UPPER
TROUGH...UPPER JET EXIT REGION...AND A STRONG/STEADILY EASTWARD
PROGRESSING COLD FRONT WILL FOCUS BANDS OF STRONG TSTMS ACROSS
CENTRAL/NORTHERN NV INTO ADJACENT SOUTHEAST ORE/SOUTHWEST ID THIS
AFTERNOON. MUCH OF THIS ACTIVITY WILL BE DECIDEDLY FOCUSED
IMMEDIATELY ALONG THE ADVANCING COLD FRONT...BUT A WARM/WEAKLY
CAPPED BOUNDARY LAYER MAY YIELD SOME ISOLATED FRONT-LEADING TSTM
DEVELOPMENT AS WELL. WITH SLIGHTLY ABOVE NORMAL PRECIPITABLE WATER
VALUES /0.30-0.40 IN PER 12Z OBSERVED LKN AND REV RAOBS/ AND A WARM
BOUNDARY LAYER /MID 60S TO LOWER 70S F/...VERY STRONG/NEARLY
UNIDIRECTIONAL WIND PROFILES /50 KT WITHIN LOWEST 3-4 KM PER LRX
WSR-88D VWP/ WILL SUPPORT CONVECTIVE WIND GUSTS TO AROUND SEVERE
LEVELS AS STORMS RACE N-NE...IN ADDITION TO THE POSSIBILITY OF SOME
HAIL. ALONG THESE LINES...A 51 KT GUST WAS RECENTLY MEASURED AT
LOVELOCK NV /1930Z/.
..GUYER.. 04/20/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...BOI...LKN...REV...
LAT...LON 41341854 42671807 42651603 40461569 38621687 38521778
39561835 41341854
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