Severe Storm Outlook Narrative (AC)
Issued by NWS

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ACUS02 KWNS 240432
SWODY2
SPC AC 240431

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1131 PM CDT WED APR 23 2014

VALID 251200Z - 261200Z

...NO SVR TSTM AREAS FORECAST...

...SUMMARY...
ISOLATED STRONG...OR PERHAPS ONE OR TWO SEVERE THUNDERSTORMS...MAY
DEVELOP ACROSS PARTS OF THE SOUTHEASTERN U.S. AND ALONG A DRYLINE
OVER SOUTHWEST TEXAS.

...SERN U.S...

SRN ROCKIES SHORT-WAVE TROUGH IS EXPECTED TO PROGRESS INTO THE OH/TN
VALLEY EARLY FRIDAY.  SRN END OF THIS DEAMPLIFYING FEATURE IS
EXPECTED TO INFLUENCE CONVECTIVE DEVELOPMENT ACROSS THE CAROLINAS
INTO SRN VA...POSSIBLY AS EARLY AS 17-18Z AS SFC TEMPERATURES WARM
INTO THE EARLY 70S.  BOUNDARY LAYER AIRMASS IS NOT EXPECTED TO BE
PARTICULARLY UNSTABLE AHEAD OF THE SHORT WAVE BUT SBCAPE COULD
APPROACH 1000 J/KG ACROSS SC WHERE FEWER CLOUDS AND STRONGER HEATING
ARE EXPECTED.  WITH DEEP LAYER SHEAR ON THE ORDER OF 35KT ANY
CONVECTION THAT DEVELOPS COULD ATTAIN ORGANIZED STRUCTURES CAPABLE
OF GENERATING GUSTY WINDS AND MARGINALLY SEVERE HAIL.


...SOUTHWEST TX...

SHORT-WAVE RIDGING IS EXPECTED TO INFLUENCE WEST TX DRYLINE FRIDAY.
AS LEE TROUGH INTENSIFIES BOUNDARY LAYER MOISTURE OVER DEEP SOUTH TX
SHOULD BEGIN RETURNING NWWD ALONG THE RIO GRANDE VALLEY INTO THE
EDWARDS PLATEAU OF SWRN TX.  STRONG HEATING ALONG THE DRYLINE SHOULD
ALLOW SFC TEMPERATURES TO WARM INTO THE MID-UPPER 80S WHICH SHOULD
WEAKEN INHIBITION BY 22Z.  LATEST THINKING IS ANY CONVECTION THAT
EVOLVES ALONG THIS BOUNDARY SHOULD PROVE VERY ISOLATED...THOUGH
GUSTY WINDS OR MARGINALLY SEVERE HAIL COULD ACCOMPANY ANY ORGANIZED
STORMS BETWEEN 22-03Z.

...WRN U.S...

STRONG MID-LEVEL SPEED MAX IS FORECAST TO DIG SEWD INTO THE LOWER CO
RIVER BASIN BY 26/12Z.  AS COLD TROUGH MOVES INLAND LAPSE RATES
SHOULD STEEPEN ENOUGH FOR ISOLATED THUNDERSTORMS...PRIMARILY DURING
AFTERNOON WHEN SFC TEMPERATURES SHOULD ENHANCE MARGINAL INSTABILITY.

..DARROW.. 04/24/2014



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