Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 282252
SWOMCD
SPC MCD 282252
NJZ000-MDZ000-DEZ000-VAZ000-DCZ000-WVZ000-290015-

MESOSCALE DISCUSSION 1427
NWS STORM PREDICTION CENTER NORMAN OK
0552 PM CDT THU JUL 28 2016

AREAS AFFECTED...PORTIONS OF VA/MD/DC/DE/NJ

CONCERNING...SEVERE THUNDERSTORM WATCH 418...419...

VALID 282252Z - 290015Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
418...419...CONTINUES.

SUMMARY...AN ISOLATED SEVERE THREAT CONTINUES ACROSS MAINLY SOUTHERN
PORTIONS OF WW 418/419.

DISCUSSION...AS OF 2250Z...ROBUST THUNDERSTORMS ACROSS WW 418/419
REMAIN CONFINED ALONG/S OF A CONVECTIVELY REINFORCED EFFECTIVE
BOUNDARY LOCATED WSW-ENE ACROSS THE MCD AREA. THE AIRMASS ALONG/S OF
THIS EFFECTIVE BOUNDARY REMAINS MODERATELY TO STRONGLY UNSTABLE...
WITH TEMPERATURES IN THE UPPER 80S TO LOWER 90S AND DEWPOINTS IN THE
LOWER TO MID 70S. VWP FROM THE KAKQ RADAR INDICATES 0-6 KM FLOW
VEERS/STRENGTHENS WITH HEIGHT...SUPPORTING EFFECTIVE BULK SHEAR
VALUES OF 30-40 KT. A CLUSTER OF THUNDERSTORMS ACROSS SRN MD AND THE
DELMARVA PENINSULA HAS THE BEST POTENTIAL AT PRODUCING ISOLATED
STRONG/DAMAGING WIND GUSTS AND PERHAPS MARGINALLY SEVERE HAIL IN THE
SHORT TERM. ONE CELL OVER THE SRN CHESAPEAKE BAY W OF SOMERSET
COUNTY MD HAS SHOWN PERSISTENT MID-LEVEL ROTATION...AND BACKED SELY
SFC WINDS ACROSS THE LOWER DELMARVA SUGGEST A BRIEF TORNADO REMAINS
POSSIBLE. THE SEVERE THREAT ACROSS REMAINING NRN PORTIONS OF WW 418
/PARTS OF NRN/CNTRL MD...DC...NRN DE...AND ERN WV/ APPEARS LOW GIVEN
A RAIN-COOLED AIRMASS AND MINIMAL INSTABILITY. IF CURRENT CONVECTIVE
TRENDS CONTINUE...THE NRN PORTION OF WW 418 MAY BE CANCELED EARLY.

..GLEASON.. 07/28/2016

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

ATTN...WFO...PHI...AKQ...LWX...RNK...

LAT...LON   36678108 38217978 38987922 39137624 39757551 39427425
            38737494 37967516 37727745 36637922 36678108



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