[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 190147
SWOMCD
SPC MCD 190146
ALZ000-TNZ000-MSZ000-190245-

MESOSCALE DISCUSSION 0528
NWS STORM PREDICTION CENTER NORMAN OK
0846 PM CDT THU APR 18 2013

AREAS AFFECTED...NERN MS...NWRN AL...FAR SRN TN

CONCERNING...TORNADO WATCH 126...128...

VALID 190146Z - 190245Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 126...128...CONTINUES.

SUMMARY...ISOLATED/LOW-END DAMAGING WIND AND TORNADO THREATS MAY
PERSIST ALONG PRIMARILY THE SRN PORTION OF A RELATIVELY THIN QLCS.
THE THREAT APPEARS TO BE TOO MARGINAL TO WARRANT AN ADDITIONAL
WW...BUT OBSERVATIONAL TRENDS WILL CONTINUE TO BE MONITORED.

DISCUSSION...HIGHER REFLECTIVITY CORES HAVE CONTINUED TO
ELONGATE/THIN IN THE PAST COUPLE OF HOURS...INDICATIVE OF
DIMINISHING INSTABILITY /ESPECIALLY WITH NRN EXTENT/. MEAGER
BUOYANCY/DESTABILIZATION IS STILL OCCURRING AHEAD OF THE LINE AS
SURFACE DEW POINTS HAVE SLOWLY RISEN INTO THE MIDDLE 60S ACROSS
E-CNTRL MS/W-CNTRL AL. LOW-LEVEL WIND PROFILES ARE VERY STRONG WITH
A LARGE CYCLONIC HODOGRAPH SAMPLED IN THE COLUMBUS AFB MS VWP DATA.
THUS...A LARGELY WANING BUT LOW-END DAMAGING WIND/TORNADO RISK COULD
PERSIST FOR A FEW MORE HOURS AS THE LINE SHIFTS EWD.

..GRAMS/THOMPSON.. 04/19/2013

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

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

LAT...LON   35358894 35508822 35498741 35388712 35138697 34428703
            33658719 32968768 32678831 32458908 32468964 32788979
            33158959 35358894


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