Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 270151
SWOMCD
SPC MCD 270151
TXZ000-270315-

MESOSCALE DISCUSSION 0795
NWS STORM PREDICTION CENTER NORMAN OK
0851 PM CDT TUE MAY 26 2015

AREAS AFFECTED...PORTIONS NRN TX

CONCERNING...TORNADO WATCH 222...

VALID 270151Z - 270315Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 222 CONTINUES.

SUMMARY...THE THREAT FOR A FEW LARGE HAIL REPORTS AND A TORNADO OR
TWO CONTINUES OVER SERN PORTIONS OF WW 222.

DISCUSSION...A LARGE CLUSTER OF STRONG-TO-SEVERE TSTMS /WITH
EMBEDDED HP SUPERCELL STRUCTURES/ CONTINUES TO EVOLVE TO THE W/SW OF
THE DFW METROPLEX THIS EVENING. THE INTERACTION OF A MERGED COLD
POOL WITH A SFC BOUNDARY EXTENDING TO THE E/SE TOWARDS HILL CO IS
THE APPARENT SOURCE OF ROTATION WITHIN STRONGER CORES AMONGST THIS
CLUSTER OF CELLS. WITH DYNAMIC PRESSURE PERTURBATION FORCES LIFTING
PARCELS TO THE LFC...THESE UPDRAFTS ARE STILL ABLE TO UTILIZE A
PLUME OF STEEP LAPSE RATES AND AMPLE EFFECTIVE SHEAR ALOFT. AS
SUCH...SOME POTENTIAL FOR LARGE HAIL AND A TORNADO OR TWO REMAINS
OVER SERN SECTIONS OF WW 222 THIS EVENING. NONETHELESS...WITH
CONTINUED CELL/COLD POOL MERGERS...BL COOLING...AND THE DEPARTURE OF
A MID/UPPER-LEVEL IMPULSE TO THE NE...THE OVERALL THREAT SHOULD
SLOWLY DECREASE OVER THE NEXT FEW HOURS.

..PICCA.. 05/27/2015

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

ATTN...WFO...FWD...OUN...SJT...

LAT...LON   32659980 33689859 33849761 32789753 32189778 31919831
            31919868 32119898 32159965 32659980



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