Mesoscale Discussion 988

Issued

May 30, 2012, 7:37 PM CDT (00:37 UTC)

Expired

May 30, 2012, 9:30 PM CDT

In force

113 min

Issued by

the Storm Prediction Center

The Dyess AFB radar (KDYX), 55 km from the middle of the area, began a volume at 00:39 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

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249 
ACUS11 KWNS 310037
SWOMCD
SPC MCD 310037 
TXZ000-310230-

MESOSCALE DISCUSSION 0988
NWS STORM PREDICTION CENTER NORMAN OK
0737 PM CDT WED MAY 30 2012

AREAS AFFECTED...WEST CENTRAL TEXAS

CONCERNING...TORNADO WATCH 324...

VALID 310037Z - 310230Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 324 CONTINUES.

SUMMARY...TORNADO AND LARGE HAIL THREAT WILL CONTINUE THE NEXT FEW
HOURS. ONE ISOLATED SUPERCELL PRODUCING A TORNADO AND LARGE HAIL
NEAR CONCHO CO TEXAS WILL AFFECT SRN PORTIONS OF THE WW AREA WHILE
STORMS MOVING SEWD INTO THE NRN PORTIONS OF THE WW WILL ALSO POSE A
TORNADO AND LARGE HAIL THREAT THIS EVENING.

DISCUSSION...AN ISOLATED SUPERCELL OVER CONCHO COUNTY IN WEST
CENTRAL TEXAS WILL CONTINUE TO TRACK SEWD ACROSS SRN PORTIONS OF WW
324. THIS STORM HAS SHOWN CYCLIC CHARACTERISTICS WITH PERIODIC BRIEF
WEAKENING AND RESTRENGTHENING AS THE MESOCYCLONE REORGANIZES.
SEVERAL REPORTS OF TORNADOES HAVE ALSO BEEN NOTED WITH THIS STORM.
THE DOWNSTREAM ENVIRONMENT REMAINS FAVORABLE FOR CONTINUED TORNADO
PRODUCTION FOR AT LEAST A LITTLE WHILE LONGER AS 0-1 KM SRH VALUES
NEAR 100-150 M2/S2 REMAIN IN THE VICINITY PER LATEST MESOANALYSIS.
HOWEVER...LOW LEVEL WINDS DO WEAKEN WITH SOUTHWARD EXTENT ACROSS THE
WATCH AREA AND THIS COULD HAVE SOME IMPACT ON TORNADO POTENTIAL AS
THE STORM TRACKS SEWD. ASIDE FROM TORNADO POTENTIAL...THIS STORM
WILL CONTINUE TO BE CAPABLE OF PRODUCING LARGE HAIL AS STEEP LAPSE
RATES AND STRONG DEEP LAYER SHEAR SUPPORT AN ONGOING ORGANIZED
STRUCTURE. 00Z IR IMAGERY ALSO INDICATES THAT THERE ARE NO IMMEDIATE
SIGNS OF WEAKENING AS CLOUD TOPS CONTINUE TO REMAIN VERY COLD.

ACROSS NORTHERN PORTIONS OF THE WATCH AREA...STORMS CURRENTLY
AFFECTING PORTIONS OF THE LUB AND OUN FORECAST AREAS WILL SOON MOVE
INTO WW 324. THESE STORMS ALSO HAVE A HISTORY OF PRODUCING TORNADOES
AND LARGE HAIL. ENVIRONMENTAL CONDITIONS WILL REMAIN FAVORABLE FOR
THE CONTINUATION OF THESE THREATS FOR AT LEAST THE NEXT FEW HOURS.

..LEITMAN.. 05/31/2012

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

ATTN...WFO...FWD...OUN...EWX...SJT...LUB...

LAT...LON   33440070 33429864 30259806 30250006 33440070

Mesoscale Discussions in Texas, 2012Every mesoscale discussion in 2012

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.