[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 210354
SWOMCD
SPC MCD 210353
ALZ000-TNZ000-MSZ000-210530-

MESOSCALE DISCUSSION 0594
NWS STORM PREDICTION CENTER NORMAN OK
1053 PM CDT THU APR 20 2006

AREAS AFFECTED...CENTRAL AND  NRN AL

CONCERNING...SEVERE THUNDERSTORM WATCH 228...

VALID 210353Z - 210530Z

SEVERE THREAT APPEARS TO BE DECREASING AS OF 330Z ACROSS MUCH OF WW
228...HOWEVER...ADDITIONAL DEVELOPMENT MAY OCCUR LATER THIS EVENING
INTO THE EARLY MORNING HOURS OVER NWRN AL. LARGE HAIL WOULD BE THE
MAIN SVR THREAT.

ISOLATED STORMS PERSIST WITHIN WARM ADVECTION ZONE LYING NW-SE
ACROSS AL. MOST OF THE AIRMASS E OF THIS BOUNDARY HAS BEEN AFFECTED
BY COOL OUTFLOW INTO NERN AL AND NWRN GA...THUS STORMS HAVE SHOWN
WEAKENING TRENDS AS THEY MOVE NEWD.

AREA WIND PROFILERS/VWPS DO SHOW INCREASING LOW LEVEL FLOW /850 MB/
AROUND 15-20 KTS WHICH WILL CONTINUE TO FEED STORMS ALONG THE WARM
FRONTAL/OUTFLOW BOUNDARY FOR SEVERAL MORE HOURS...ALTHOUGH
COMBINATION OF CONTINUED WARM ADVECTION ALOFT WITH COOLING BOUNDARY
LAYER WILL LIKELY CAUSE STORMS TO EVENTUALLY DIE OVER CENTRAL AND
ERN AL.

GREATER THREAT FOR SVR EXIST ACROSS NWRN AL...IN CLOSER PROXIMITY TO
INSTABILITY POOL NOW OVER NRN MS. APPROACHING UPPER WAVE WILL CAUSE
STORMS TO INCREASE TO THE WEST OF WW 228 OVER THE NEXT SEVERAL
HOURS...AND A FEW OF THESE STORMS MAY MAKE IT INTO NWRN AL LATER
TONIGHT WITH A LARGE HAIL THREAT.

..JEWELL.. 04/21/2006

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

ATTN...WFO...OHX...BMX...HUN...MEG...

34998815 35008685 33568632 32648621 32488664 33008825

This weather bulletin was brought to you by:
www.nashvilleweather.net