MESO: Mesoscale Discussion 1366

ACUS11 KWNS 192011
SWOMCD
SPC MCD 192010
SDZ000-NDZ000-MTZ000-WYZ000-192145-

MESOSCALE DISCUSSION 1366
NWS STORM PREDICTION CENTER NORMAN OK
0310 PM CDT MON JUL 19 2010

AREAS AFFECTED...SERN MT...NERN WY THROUGH NWRN SD

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 192010Z - 192145Z

STORMS ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AS THEY
DEVELOP EWD THROUGH SERN MT...NERN WY AND NWRN SD. LARGE HAIL AND
DAMAGING WIND WILL BE THE MAIN THREATS. WW WILL LIKELY BE NEEDED
SOON.

STORMS HAVE INTENSIFIED IN VICINITY OF WNW-ESE ORIENTED BAROCLINIC
ZONE ACROSS SERN MT. COOL AIR ALOFT WITH -12C AT 500 MB...SURFACE
TEMPERATURES NEAR 80F AND UPPER 50S F DEWPOINTS HAVE RESULTED IN
1000-1500 J/KG MLCAPE. CONVERGENCE ALONG SURFACE BOUNDARIES AND
DEEPER ASCENT ASSOCIATED WITH VORT MAX ADVANCING THROUGH ERN MT WILL
PROMOTE STORMS DEVELOPING SEWD INTO THE DESTABILIZING WARM SECTOR.
BULK SHEAR AROUND 50 KT WILL FAVOR ORGANIZED STORMS INCLUDING
SUPERCELLS AND BOWING SEGMENTS.

..DIAL.. 07/19/2010

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

ATTN...WFO...ABR...BIS...UNR...BYZ...

LAT...LON 43980148 44520373 45360587 46160555 45490116 44570061
43980148

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