Heavy Snow
Posted by JAC on 1/29/2010, 2:42 pm







MESOSCALE DISCUSSION 0087
  NWS STORM PREDICTION CENTER NORMAN OK
  1141 AM CST FRI JAN 29 2010
 
  AREAS AFFECTED...NRN AR AND ERN-NERN OK
 
  CONCERNING...HEAVY SNOW
 
  VALID 291741Z - 292145Z
 
  POTENTIAL EXISTS FOR 1 IN/HR SNOWFALL RATES ACROSS NRN AR INTO
  PORTIONS OF ERN-NERN OK THIS AFTERNOON AND EVENING.
 
  RECENT SATELLITE IMAGERY REVEALS AN EXPANDING AREA OF COOLING CLOUD
  TOPS LOCATED IMMEDIATELY AHEAD OF A S/W TROUGH LIFTING NEWD ACROSS
  THE RED RIVER VALLEY OF NRN TX/SRN OK. SHIELD OF PRECIPITATION HAS
  SUBSEQUENTLY DEVELOPED WITH THIS SATELLITE FEATURE...WITH
  PRECIPITATION TYPE AT 17Z IN THE FORM OF RAIN OVER SERN OK
  TRANSITIONING TO SNOW /MIXED WITH OCCASIONAL SLEET/ TOWARD CENTRAL
  AND NERN OK AS WELL AS NRN AR. AS 850 MB JET CONTINUES TO SHIFT EWD
  AWAY FROM THE REGION...ANY REMAINING WARM LAYER WOULD BE MORE PRONE
  TO COOLING...ALLOWING THERMODYNAMIC PROFILES TO FALL BELOW FREEZING
  AND RESULTING IN PREDOMINANT PRECIPITATION TYPE IN THE FORM OF SNOW.
  SNOWFALL RATES COULD APPROACH 1 IN/HR AS UVV/S BECOME MAXIMIZED
  WITHIN MID LEVEL DEFORMATION ZONE...WHICH IS FORECAST TO RESIDE
  ACROSS MUCH OF NRN AR WWD INTO ERN-NERN OK DURING THE AFTERNOON.
 
  ..GARNER.. 01/29/2010
71
In this thread:
Major Winter Storm: OK to VA - JAC, 1/28/2010, 7:04 am
< Return to the front page of the: message board | monthly archive this page is in
Post A Reply
This thread has been archived and can no longer receive replies.