[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 022043
SWOMCD
SPC MCD 022042
FLZ000-GAZ000-ALZ000-TNZ000-022145-

MESOSCALE DISCUSSION 0373
NWS STORM PREDICTION CENTER NORMAN OK
0342 PM CDT THU APR 02 2009

AREAS AFFECTED...AL...SRN MIDDLE TN...FL PANHANDLE

CONCERNING...TORNADO WATCH 107...108...

VALID 022042Z - 022145Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 107...108...CONTINUES.

DAMAGING WINDS...MARGINAL HAIL AND PERHAPS AN ISOLATED TORNADO
SHOULD REMAIN THE PRIMARY NEAR-TERM THREATS WITHIN EMBEDDED BROKEN
LINE SEGMENTS. HOWEVER...STRENGTHENING LOW-LEVEL FLOW MAY RESULT IN
INCREASING TORNADIC POTENTIAL WITHIN WW 107 AND WRN PORTIONS OF WW
108...ESPECIALLY WITH ANY SEMI-DISCRETE CELLS.

AS OF 2035Z...RADAR IMAGERY DEPICTED SEVERAL BROKEN LINE SEGMENTS
ACROSS WRN AL...WITH ADDITIONAL ACTIVITY DEVELOPING OVER THE WRN FL
PANHANDLE/SERN AL ATOP REMNANT OUTFLOW BOUNDARY LEFT IN THE WAKE OF
MORNING/EARLY AFTERNOON MCS. ALTHOUGH SOME CLOUD BREAKS EXIST IN
CNTRL AL...EXTENSIVE CONVECTIVE DEBRIS AND EARLIER RAINFALL HAS
LIMITED TEMPERATURES TO THE MIDDLE 60S TO MIDDLE 70S ACROSS MOST OF
CNTRL/ERN AL...WITH SURFACE DEW POINTS IN THE LOWER 60S. MODIFIED
18Z BMX/BNA RAOBS AND RUC FORECAST SOUNDINGS SUGGEST MLCAPES WILL
REMAIN MODEST...FROM 600 TO 1200 J/KG. EVEN SO...VERY STRONG
DEEP-LAYER SHEAR WILL PROMOTE A CONTINUED ORGANIZED SEVERE THREAT.
IN ADDITION...AS AR CYCLONE CONTINUES TO DEEPEN OVER THE NEXT
SEVERAL HOURS...LOW-LEVEL FLOW SHOULD STRENGTHEN /ALREADY EVIDENCED
IN RECENT VWP TRENDS/. THIS WILL ENLARGE HODOGRAPHS AND OVERALL
TORNADIC POTENTIAL THROUGH EARLY EVENING.

..GRAMS.. 04/02/2009

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

ATTN...WFO...TAE...OHX...BMX...HUN...MOB...

LAT...LON   35788627 34168611 32058624 31378589 31488484 30978423
            30188456 29718502 29928534 30358633 30518773 31508762
            32468778 34218784 35538776 35858725 35788627



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