Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 271146
SWOMCD
SPC MCD 271145
TXZ000-271345-

MESOSCALE DISCUSSION 0105
NWS STORM PREDICTION CENTER NORMAN OK
0545 AM CST FRI FEB 27 2015

AREAS AFFECTED...PARTS OF THE TX S PLAINS AND LOW ROLLING PLAINS

CONCERNING...HEAVY SNOW

VALID 271145Z - 271345Z

SUMMARY...LOCALIZED HEAVY SNOWFALL RATES OF 1.0-1.5 INCH PER HOUR
ARE POSSIBLE OVER THE NEXT FEW HOURS ACROSS PARTS OF THE TX S PLAINS
AND LOW ROLLING PLAINS.

DISCUSSION...RADAR MOSAIC OVER THE PAST FEW HOURS HAS SHOWN THE
DEVELOPMENT OF A MAINLY W TO E ORIENTED SNOW BAND FROM LAMB COUNTY
EWD TO KING COUNTY TX.  OBSERVATIONS FROM THE LBB VICINITY SHOW
SNOWFALL RATES IN THE 1.0-1.5 INCH PER HOUR RANGE ACCOMPANYING THE
SNOW BAND.  WATER VAPOR IMAGERY SHOWS A VIGOROUS SHORTWAVE TROUGH
MOVING ACROSS N-CNTRL NM EARLY THIS MORNING AND THIS FEATURE WILL
MOVE INTO WRN PORTIONS OF THE TX S PLAINS/PANHANDLE REGIONS OVER THE
NEXT FEW HOURS.  LARGE-SCALE ASCENT ACCOMPANYING THE MID-LEVEL
DISTURBANCE COUPLED WITH FRONTOGENESIS IN THE H7-H6 LAYER IS BEING
MANIFEST INTO A LOCALIZED HEAVY SNOW BAND OVER THE TX S PLAINS.
MODEL GUIDANCE SHOWS THE MAXIMA IN H7-H5 UVV/S SPREADING EWD FROM TX
S PLAINS INTO THE LOW ROLLING PLAINS OVER THE NEXT 2 HOURS.  AS A
RESULT...EXPECT A SLIGHT ENEWD MOTION TO THE FRONTOGENETIC SNOW BAND
THROUGH 1345Z.

..SMITH.. 02/27/2015

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

ATTN...WFO...OUN...LUB...

LAT...LON   33969971 33539999 33820188 34360190 33969971




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