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MESOSCALE DISCUSSION 1907
NWS STORM PREDICTION CENTER NORMAN OK
1132 PM CDT THU JUL 24 2008
AREAS AFFECTED...PARTS OF S CENTRAL IA/ERN MO/FAR W CENTRAL IL
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 250432Z - 250600Z
HEAVY RAINFALL POTENTIAL AND ISOLATED/MARGINAL SEVERE THREAT
EXPECTED TO CONTINUE FOR SEVERAL HOURS. WW MAY BECOME NECESSARY.
THUNDERSTORMS CONTINUE TO INCREASE IN COVERAGE AND INTENSITY ACROSS
NERN MO AND VICINITY...ALONG THE SURFACE-BASED INSTABILITY GRADIENT
LYING NW-SE ACROSS THIS AREA. STORMS HAVE REMAINED GENERALLY
ELEVATED...BUT RECENT TRENDS INDICATE SOME SWWD BACKBUILDING TOWARD
CENTRAL MO WHERE A 30 KT SWLY LOW-LEVEL JET EXISTS. THUS -- THE
POTENTIAL FOR STORMS TO BECOME MORE NEARLY SURFACE-BASED SEEMS TO
EXIST INTO CENTRAL MO -- WHICH WOULD ENHANCE THE POTENTIAL FOR
SEVERE WEATHER.
OTHERWISE...MAIN THREAT -- ALONG WITH MARGINAL HAIL -- APPEARS TO BE
HEAVY RAINFALL. GIVEN POTENTIAL FOR STORMS TO PERSIST AND THE
ORIENTATION OF THE CONVECTIVE BAND ROUGHLY ALONG THE DIRECTION OF
PRIMARY STORM MOTION...SEVERAL INCHES OF RAIN WILL BE POSSIBLE
LOCALLY OVER THE NEXT FEW HOURS.
..GOSS.. 07/25/2008
ATTN...WFO...LSX...DVN...SGF...DMX...EAX...
40849237 39639072 38429016 37489054 37539157 38339290
39649355 40929319
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