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Severe Storm Outlook Narrative (AC)
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Issued by NWS
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000 ACUS11 KWNS 210145 SWOMCD SPC MCD 210145 OKZ000-TXZ000-210245- MESOSCALE DISCUSSION 0738 NWS STORM PREDICTION CENTER NORMAN OK 0845 PM CDT MON MAY 20 2013 AREAS AFFECTED...PORTIONS OF N-CNTRL AND CNTRL TX CONCERNING...TORNADO WATCH 192... VALID 210145Z - 210245Z THE SEVERE WEATHER THREAT FOR TORNADO WATCH 192 CONTINUES. SUMMARY...THE TORNADO THREAT HAS DIMINISHED CONSIDERABLY OVER PORTIONS OF N-CNTRL AND CNTRL TX EXCEPT FOR THE HAMILTON COUNTY SUPERCELL. A LINGERING TORNADO THREAT MAY PERSIST IN THE SHORT TERM FOR HAMILTON COUNTY...IN ADDITION TO LARGE HAIL/LOCALLY DAMAGING WINDS. DISCUSSION...VISIBLE SATELLITE SHOWS NO FURTHER CUMULUS DEVELOPMENT ALONG THE WESTWARD ADVANCING COMPOSITE DRYLINE/OUTFLOW FROM WRN N-CNTRL TX SWD TO THE RIO GRANDE. ALTHOUGH THE AIRMASS REMAINS POTENTIALLY UNSTABLE...GRADUAL BOUNDARY LAYER COOLING WILL ACT TO INCREASE CINH AND STRENGTHEN THE CAPPING INVERSION IN PLACE OVER MUCH OF THE AREA. AS A RESULT...THE REMAINING SEVERE THREAT APPEARS CONFINED TO THE CLUSTER OF STRONG-SEVERE STORMS OVER HAMILTON/COMANCHE COUNTIES. CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED BUT ATTM...IT DOES NOT APPEAR NECESSARY THAT A REPLACEMENT WATCH WILL BE NEEDED. IF THE HAMILTON/COMANCHE STORMS MAINTAIN VIGOR CLOSE TO THE 03Z EXPIRATION TIME...THEN A LOCAL EXTENSION-IN-TIME FOR AN HOUR MIGHT BE BEST SUITED TO ADDRESS THIS POSSIBLE THREAT. ..SMITH.. 05/21/2013 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...OUN...EWX...SJT... LAT...LON 33179935 33899819 33719600 30469813 29859924 30330010 32250019 33179935
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