MESO: Mesoscale Discussion 0001

ACUS11 KWNS 031810
SWOMCD
SPC MCD 031810
TXZ000-NMZ000-032315-

MESOSCALE DISCUSSION 0001
NWS STORM PREDICTION CENTER NORMAN OK
1210 PM CST THU JAN 03 2013

AREAS AFFECTED...SRN NM THROUGH SWRN TX

CONCERNING...HEAVY SNOW

VALID 031810Z - 032315Z

SUMMARY...OCCASIONAL MODERATE TO HEAVY SNOW WITH RATES LOCALLY UP TO
1 INCH PER HOUR IS EXPECTED TO PERSIST INTO THE EARLY EVENING ACROSS
SRN NM INTO WEST TEXAS. TENDENCY SHOULD BE FOR HEAVIER SNOW TO
DEVELOP FARTHER SWD TOWARD THE BIG BEND AREA OF SW TX LATER THIS
AFTERNOON OR EVENING.

DISCUSSION...AREAS OF SNOW WITH EMBEDDED BANDS OF LOCALLY MODERATE
TO HEAVY SNOW CONTINUES WITHIN A BROAD ZONE OF WARM ADVECTION FROM
SRN NM THROUGH WRN AND SWRN TX. THE PRECIPITATION HAS INCREASED IN
COVERAGE AND INTENSITY THROUGH THE MORNING IN ASSOCIATION WITH A
SHORTWAVE TROUGH MOVING ENEWD THROUGH NRN MEXICO. THE 12Z RAOB FROM
EL PASO INDICATED AN UNSTABLE LAYER BETWEEN 600 AND 400 MB
SUGGESTING SOME CONVECTIVE ENHANCEMENT IS LIKELY OCCURRING. AN UPPER
JET STREAK LOCATED OVER NRN MEXICO WILL SHIFT NEWD TOWARD THE BIG
BEND THIS EVENING. THIS FEATURE WILL CONTRIBUTE TO INCREASING ASCENT
WITHIN DENDRITIC GROWTH LAYER...LIKELY AUGMENTING SNOWFALL RATES
FROM THE MOUNTAINS OF SWRN TX INTO THE BIG BEND AREA LATER THIS
AFTERNOON AND EVENING.

..DIAL.. 01/03/2013

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

ATTN...WFO...SJT...MAF...ABQ...EPZ...

LAT...LON 32180728 33020538 32700286 32030154 31140126 30170254
29500350 30740507 31690661 32180728

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