Severe Storm Outlook Narrative (AC)
Issued by NWS

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ACUS02 KWNS 281724
SWODY2
SPC AC 281723

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1223 PM CDT FRI AUG 28 2015

VALID 291200Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

...SUMMARY...
ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE ON SATURDAY
FROM THE SOUTHERN GREAT LAKES SOUTHWARD TO THE GULF COAST STATES AND
ARKLATEX. ADDITIONAL THUNDERSTORMS WILL ALSO BE POSSIBLE FROM THE
DESERT SOUTHWEST NORTHWARD INTO THE CENTRAL AND NORTHERN ROCKIES.

...SYNOPSIS...
WHILE A WEAK UPPER TROUGH CONTINUES TO MAKE GRADUAL EWD PROGRESS
ACROSS THE ERN HALF OF THE U.S. SATURDAY...CYCLONIC FLOW SURROUNDING
A MUCH STRONGER/PACIFIC TROUGH IS PROGGED TO CONTINUE SPREADING INTO
THE WRN U.S. AS THE SYSTEM ADVANCES STEADILY EWD.

AT THE SURFACE...A RELATIVELY NONDESCRIPT/WEAK SURFACE PATTERN IS
FORECAST TO PREVAIL OVER THE ERN HALF OF THE COUNTRY...WHILE A COLD
FRONT MOVES ACROSS THE WRN U.S. IN CONJUNCTION WITH THE
AFOREMENTIONED UPPER TROUGH.

AS THIS TROUGH/FRONT SHIFTS EWD...SHOWERS AND THUNDERSTORMS ARE
FORECAST ACROSS PORTIONS OF THE INTERMOUNTAIN W...PARTICULARLY
WITHIN A N-S ZONE EXTENDING ROUGHLY FROM MT SWD TO AZ/NM.  FARTHER
E...A WEAK/SUBTLE SURFACE SYSTEM CROSSING THE CENTRAL U.S. WILL
SUPPORT A ZONE OF SHOWERS AND STORMS FROM THE ARKLATEX/OZARKS REGION
EWD INTO THE MIDWEST/TN VALLEY VICINITY.  ELSEWHERE...A LARGE AREA
OF SHOWERS AND ISOLATED STORMS IS FORECAST ACROSS PORTIONS OF THE
SOUTHEAST -- INVOF A VERY WEAK UPPER LOW PROGGED TO LINGER ACROSS
THE AREA...WHILE CONVECTION ALSO INCREASES ACROSS FL LATE IN THE
PERIOD WITH THE EVENTUAL APPROACH OF TROPICAL SYSTEM ERIKA.  FOR
ADDITIONAL INFORMATION REGARDING ERIKA...PLEASE REFER TO THE LATEST
FORECAST INFORMATION FROM THE NATIONAL HURRICANE CENTER.

..GOSS.. 08/28/2015




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