[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 012101
SWOMCD
SPC MCD 012100
TNZ000-ALZ000-012230-

MESOSCALE DISCUSSION 0479
NWS STORM PREDICTION CENTER NORMAN OK
0300 PM CST FRI APR 01 2005

AREAS AFFECTED...EXTREME E CNTRL MS THROUGH CNTRL AND NRN AL INTO S
CNTRL TN

CONCERNING...SEVERE THUNDERSTORM WATCH 122...

VALID 012100Z - 012230Z

THREAT FOR ISOLATED DAMAGING WIND AND HAIL WILL PERSIST AS SQUALL
LINE MOVES THROUGH AL AND SRN MIDDLE TN NEXT FEW HOURS.

THIS AFTERNOON A SQUALL LINE EXTENDS FROM MIDDLE TN SWWD THROUGH NRN
AL NEAR HUNTSVILLE AND FARTHER SW INTO EXTREME ERN MS NEAR MERIDIAN.
THE LINE IS MOVING EAST AT AROUND 30 KT. DEVELOPING SURFACE LOW OVER
NRN AL ASSOCIATED WITH INCREASING ASCENT WITHIN THE EXIT REGION OF
CYCLONICALLY CURVED UPPER JET HAS PROMOTED INCREASING SSELY LOW
LEVEL FLOW ACROSS CNTRL/NRN AL. HOWEVER...THIS FLOW IS RESULTING IN
LOW LEVEL TRAJECTORIES FROM AIR THAT HAS BEEN PARTIALLY STABILIZED
BY EARLIER MCS. SO DESPITE PARTIAL CLEARING IN WAKE OF THE
MCS...MLCAPE OF ONLY 500 TO 1000 J/KG EXISTS AHEAD OF THE LINE WITH
SURFACE DEWPOINTS AROUND 60. DESPITE THIS LIMITING FACTOR...THE
STRENGTHENING LOW LEVEL JET AND FAVORABLE VERTICAL SHEAR PROFILES
WILL CONTINUE TO SUPPORT ORGANIZED STRUCTURES...INCLUDING
SUPERCELLS...WITHIN THE LINE DURING THE NEXT SEVERAL HOURS.

..DIAL.. 04/01/2005

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

ATTN...WFO...MRX...OHX...BMX...HUN...MOB...

33818755 35118683 35118578 34238603 33098654 32348674
32228753 32258836

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