Monday, June 6, 2011

MESO: Mesoscale Discussion 1112

ACUS11 KWNS 061905
SWOMCD
SPC MCD 061905
LAZ000-TXZ000-062000-

MESOSCALE DISCUSSION 1112
NWS STORM PREDICTION CENTER NORMAN OK
0205 PM CDT MON JUN 06 2011

AREAS AFFECTED...SERN TX / SWRN LA

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 061905Z - 062000Z

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP/INTENSIFY OVER THE
NEXT FEW HOURS ACROSS SWRN LA AND SERN TX. THE STRONGER STORMS WILL
FEATURE SPORADIC MICROBURSTS CAPABLE OF POCKETS OF STRONG TO
LOWER-END SEVERE WIND GUSTS...AND LEAD TO ISOLD WIND DAMAGE.

VISIBLE SATELLITE/SURFACE COMPOSITE SHOWS A BUILDING CU FIELD
DEVELOPING FROM NEAR/E OF I-45 N OF HOU EWD INTO INTERIOR PORTIONS
OF SWRN LA...WHERE TEMPS HAVE WARMED TO NEAR 100 DEG F. 12Z LCH
RAOB EXHIBITED A VERY MOIST/POTENTIALLY UNSTABLE BOUNDARY LAYER WITH
LOWEST 100 MB MEAN MIXING RATIO 18 G/KG. THE AREA VAD/S
/KLCH-KHGX...MOST RECENTLY LDB PROFILER/ SHOW 20 KTS 3-4 KM AGL
FLOW--AND THIS IS SLIGHTLY STRONGER THAN SURROUNDING VWPS/VADS
ACROSS THE NRN GULF COAST REGION. THIS BELT OF RELATIVELY STRONGER
LOWER TO MID TROPOSPHERIC FLOW MAY ACT TO LOCALLY MAXIMIZE ISOLD
WIND DAMAGE CONCENTRATION. GIVEN THE STEEP LOW LEVEL LAPSE RATE
ENVIRONMENT...WATER LOADING PROCESSES LEADING TO WET MICROBURSTS
WILL PROBABLY LEAD TO ISOLD WIND DAMAGE AS STORMS MATURE THROUGH THE
AFTERNOON AND PROPAGATE SLOWLY WWD.

..SMITH.. 06/06/2011

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

ATTN...WFO...LCH...SHV...HGX...FWD...EWX...

LAT...LON 31199283 30799234 30359219 30029233 29949265 29799457
29859641 30219697 30719721 31269693 31359405 31199283

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