SWOMCD
SPC MCD 312158
WYZ000-UTZ000-IDZ000-NVZ000-312330-
MESOSCALE DISCUSSION 2192
NWS STORM PREDICTION CENTER NORMAN OK
0458 PM CDT SUN AUG 31 2008
AREAS AFFECTED...PORTIONS NRN/W-CENTRAL UT...SERN ID...SWRN WY.
CONCERNING...SEVERE THUNDERSTORM WATCH 875...
VALID 312158Z - 312330Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 875
CONTINUES.
CONTINUE WW ALONG/E OF PRIMARY BAND OF CONVECTION...WHICH IS
EXPECTED TO CONTINUE MOVING EWD TOWARD WRN WY BORDER BEFORE
WEAKENING.
WEB CAMERA IMAGERY FROM PROMONTORY POINT SHOWED
WELL-DEVELOPED/TIERED ARCUS CLOUD VISUALLY CHARACTERISTIC OF INTENSE
GUST FRONTS BEFORE 67 KT GUST WAS MEASURED THERE...AND OTHER
OBSERVING STATIONS AROUND LAKE HAVE MEASURED SVR GUSTS AS FEATURE
PASSED. MOST INTENSE WINDS SHOULD PASS OVER I-15 CORRIDOR FROM OGD
NWD TO NEAR ID LINE. HOWEVER...GIVEN SIZE/STRENGTH OF COLD POOL AND
ITS SUPERIMPOSITION ON FAVORABLE DEEP-LAYER KINEMATIC PROFILES --
E.G. 40-50 KT 0-6 KM AGL SHEAR -- STG-SVR GUSTS ARE POSSIBLE FARTHER
N INTO SERN ID AND S ACROSS SLC AREA AS WELL. FOREGOING BOUNDARY
LAYER OVER LOWER ELEVATIONS WILL REMAIN CHARACTERIZED BY DEEPLY
MIXED/INVERTED-V THERMODYNAMIC PROFILES AND MRGL BUOYANCY...WITH
MLCAPES UP TO 500 J/KG. DAMAGE POTENTIAL MAY BE GREATEST ON OPEN
EXPOSURES AND LOWER WRN SLOPES WHERE WIND EXPOSURE IS MAXIMIZED FOR
THIS SORT OF COLD POOL GEOMETRY.
..EDWARDS.. 08/31/2008
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...RIW...SLC...PIH...LKN...
39941414 40991266 41901227 43491156 43541102 42651056
41491009 40601072 39741160 38961301 38961403 39471419
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
To unsubscribe from WX-STORM send e-mail to LISTSERV@LISTSERV.ILLINOIS.EDU with
"unsub wx-storm" in the body of your message. For more information write cnovy@cox.net.
No comments:
Post a Comment