Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 161
< Previous MD         Next MD >
MD 161 graphic

   MESOSCALE DISCUSSION 0161
   NWS STORM PREDICTION CENTER NORMAN OK
   0144 PM CST SUN MAR 02 2014

   AREAS AFFECTED...CNTRL AND NERN AR / MO BOOTHEEL / NWRN PART OF WRN
   TN

   CONCERNING...FREEZING RAIN 

   VALID 021944Z - 030015Z

   SUMMARY...SCATTERED TO NUMEROUS THUNDERSTORMS AND SUB-FREEZING
   SURFACE TEMPS WILL RESULT IN SIGNIFICANT FREEZING RAIN RATES LIKELY
   RANGING 0.02-0.25 INCH PER HOUR THIS AFTERNOON.

   DISCUSSION...19Z SURFACE OBSERVATIONS CONTINUE TO SHOW THE FREEZING
   LINE SLOWLY MOVING SWD ACROSS CNTRL AR.  THE 18Z LZK RAOB SHOWED A 1
   KM DEEP WEDGE OF COLD AIR BEHIND THE FRONT WITH A 12 DEG C WARM NOSE
   LOCATED AROUND 870 MB YIELDING A THERMAL PROFILE SUPPORTIVE OF
   FREEZING RAIN AS THE PRIMARY P-TYPE.  LOW-LEVEL COLD AIR ADVECTION
   WILL LIKELY OVERWHELM THE INFLUENCE OF DIURNAL HEATING AND
   FACILITATE A CHANGEOVER FROM RAIN TO FREEZING RAIN IN THE GREATER
   LITTLE ROCK METRO OVER THE NEXT FEW HOURS.  

   RADAR MOSAIC EARLY THIS AFTERNOON SHOWS A BLOSSOMING AREA OF
   SCATTERED TO NUMEROUS THUNDERSTORMS FROM SWRN AR NEWD THROUGH CNTRL
   AR.  A PLUME OF STEEP MID-LEVEL LAPSE RATES EMANATING FROM A SRN
   PLAINS EML AND RELATIVELY HIGH PW /1.25 INCH/ WILL CONTINUE TO
   SUPPORT ADDITIONAL THUNDERSTORM DEVELOPMENT AS FORCING FOR ASCENT
   THROUGH A DEEP LAYER INTENSIFIES THROUGH THE AFTERNOON. 
   CONSEQUENTLY...WIDESPREAD FREEZING RAIN RATES OF 0.05-0.20 INCH PER
   HOUR ARE LIKELY.  CONVECTIVELY-AIDED BURSTS MAY RESULT IN RATES
   EXCEEDING 0.25 INCH PER HOUR FOR AN HOUR OR SO IN LOCALIZED AREAS
   THROUGH 00Z.

   ..SMITH.. 03/02/2014


   ATTN...WFO...PAH...MEG...LZK...

   LAT...LON   35279289 35659290 36459022 36458931 36168914 35918923
               34849196 34959250 35279289 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: March 03, 2014
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities