[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 100317
SWOMCD
SPC MCD 100317
GAZ000-TNZ000-ALZ000-KYZ000-100445-

MESOSCALE DISCUSSION 0934
NWS STORM PREDICTION CENTER NORMAN OK
1017 PM CDT MON JUN 09 2014

AREAS AFFECTED...PARTS OF AL...TN...NWRN GA

CONCERNING...SEVERE THUNDERSTORM WATCH 270...272...

VALID 100317Z - 100445Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
270...272...CONTINUES.

SUMMARY...STRONG WIND GUSTS PRODUCING TREE DAMAGE SHOULD GRADUALLY
SUBSIDE ALONG A BULGING QLCS EVOLVING EWD ACROSS THE TN VALLEY
TOWARDS THE SRN APPALACHIANS.

DISCUSSION...5-9 KM MSL CAPPI REFLECTIVITY HAVE SAMPLED GRADUALLY
DIMINISHING VALUES ALONG THE QLCS THAT ARCS FROM MIDDLE TN TO
N-CNTRL AND W-CNTRL AL. THIS WEAKENING TREND HAS BEEN MOST
PRONOUNCED ACROSS THE NRN PORTION OF THE LINE WHICH APPEARS TO BE
DRIVEN PURELY ON MOMENTUM WITHIN A MORE STABLE THERMODYNAMIC
ENVIRONMENT PER 00Z BNA RAOB. THIS TREND HAS ALSO BEEN NOTED IN
INBOUND VELOCITIES WITH SURFACE WIND GUSTS LIKELY TO HOLD AOB 40
KT...BUT STILL CAPABLE OF TREE DAMAGE.

FARTHER S...DEEPER /ALBEIT WEAKENING/ UPDRAFTS HAVE BEEN SUSTAINED
NEAR/SW OF BHM. WITHIN A RESIDUAL WARMER AIR MASS /CHARACTERIZED BY
SURFACE TEMPERATURES STILL IN THE UPPER 70S/...CONVECTION HAS BEEN
ATTEMPTING TO FORM JUST AHEAD OF THE LINE ALONG A NW/SE-ORIENTED
CONFLUENCE BAND AROUND 30 NE SEM. SPORADIC TREE DAMAGE AND EVEN
MARGINAL HAIL MAY PERSIST FOR A FEW MORE HOURS DESPITE LESS
FAVORABLE ORIENTATION TO THE DEEP-LAYER SWLY FLOW.

..GRAMS.. 06/10/2014

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

ATTN...WFO...MRX...FFC...LMK...OHX...BMX...HUN...MOB...PAH...

LAT...LON   32228766 33218689 34468638 35398641 36268737 36458759
            36688736 36708694 35848565 35458516 34918499 34138482
            33258528 32428606 31988676 31948720 32228766


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