SPC MD 1662

MD 1662 CONCERNING SEVERE THUNDERSTORM WATCH 483… FOR SERN CO…SWRN KS…OK/TX PANHANDLES


MESOSCALE DISCUSSION 1662
NWS STORM PREDICTION CENTER NORMAN OK
0816 PM CDT WED AUG 07 2013

AREAS AFFECTED...SERN CO...SWRN KS...OK/TX PANHANDLES

CONCERNING...SEVERE THUNDERSTORM WATCH 483...

VALID 080116Z - 080245Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 483
CONTINUES.

SUMMARY...SHORT-TERM THREAT FOR SUPERCELLS AND VERY LARGE HAIL
CONTINUES INVOF THE OK PANHANDLE THIS EVENING. ELSEWHERE...MULTICELL
CLUSTERS AND LINE SEGMENTS ARE EVOLVING OVER SERN CO/SWRN KS...AS
WELL AS THE TX PANHANDLE...AND WILL ALSO POSE A LARGE HAIL/DAMAGING
WIND THREAT.

DISCUSSION...EVENING MESOANALYSIS SHOWS AN AREA OF SURFACE LOW
PRESSURE SITUATED OVER WRN TX...WITH A WEAK RIDGE OF HIGH PRESSURE
FROM CNTRL CO INTO NERN NEB. AS A RESULT...PRONOUNCED ZONE OF ELY
FLOW OVER THE LOWEST 1-2 KM AGL IS FOCUSED OVER WW 483. IN
ADDITION...00Z RAOBS FROM DDC AND OUN ARE CHARACTERIZED BY
MODERATELY STEEP MIDLEVEL LAPSE RATES AND A WARM/MOIST BOUNDARY
LAYER THAT IS SUPPORTING MLCAPE VALUES FROM 1000-3000 J/KG. THE
MOIST/UNSTABLE ELY INFLOW IS EXPECTED TO MAINTAIN STORMS AFTER
DARK...AND POSSIBLY SUPPORT UPSCALE GROWTH INTO A FORWARD
PROPAGATING MCS FROM THE ERN TX PANHANDLE INTO SWRN KS LATER TONIGHT
WITH A CONTINUED THREAT FOR DAMAGING WINDS.

..GARNER.. 08/08/2013

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

ATTN...WFO...OUN...DDC...GLD...AMA...PUB...BOU...ABQ...

LAT...LON   38620314 38620203 38690203 38700112 38260110 38260023
            37910021 37909957 37009954 36999999 34749999 34750303
            37640307 37620340 38250341 38260350 38510350 38520315
            38620314

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