[BNAWX] Severe Storm Outlook Narrative

[EMWIN Server]

ACUS11 KWNS 270728
SWOMCD
SPC MCD 270728
KYZ000-INZ000-TNZ000-270900-

MESOSCALE DISCUSSION 0158
NWS STORM PREDICTION CENTER NORMAN OK
0128 AM CST FRI FEB 27 2009

AREAS AFFECTED...WRN/CNTRL KY AND FAR SRN IND

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 270728Z - 270900Z

PRE-FRONTAL TSTMS HAVE EVOLVED INTO SHORT LINE SEGMENTS AND
INCREASED IN INTENSITY EARLY THIS MORNING WITH SEVERAL EMBEDDED
CELLS EXHIBITING SMALL SCALE BOWING FEATURES.  THE RECENT UPSWING IN
ACTIVITY APPEARS TO BE OCCURRING AS UPR JET ATTENDANT TO THE WI UPR
LOW TRANSLATES INTO THE LWR OH VLY.

DOWNSTREAM AIR MASS WAS NOT PARTICULARLY UNSTABLE...BUT RUC SOUNDING
MODIFIED FOR OBSERVED BOUNDARY LAYER CONDITIONS SUGGEST AROUND 200 J
PER KG MLCAPE AND A MODEST PROBABILITY FOR SFC-BASED PARCEL
INGESTION.  WIND PROFILES ACROSS WRN/CNTRL KY AND FAR SRN IND
EXHIBIT CONSIDERABLE VEERING WITH HEIGHT WITH SFC-1KM SRH OF 400+
M2/S2.  THOUGH CONVECTIVE MODE WOULD TEND TO FAVOR DMGG
WIND/HAIL...ESPECIALLY WITH THE INCREASING LINEAR DEEP-LAYER
FORCING.. ISOLD TORNADOES CANNOT BE RULED OUT.

WILL CONTINUE TO MONITOR EVOLUTION OF ACTIVITY.  A WW MAY BE
REQUIRED IF ACTIVITY MAINTAINS INTEGRITY ACROSS THE LWR OH VLY.

..RACY.. 02/27/2009

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

ATTN...WFO...LMK...OHX...PAH...

LAT...LON   36508875 38608635 38648533 37908488 36698570 36688739
            36508875

WWWW
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