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 271
< Previous MD         Next MD >
MD 271 graphic

   MESOSCALE DISCUSSION 0271
   NWS STORM PREDICTION CENTER NORMAN OK
   0225 AM CDT FRI MAR 25 2016

   AREAS AFFECTED...PORTIONS OF NRN MAINE

   CONCERNING...HEAVY SNOW 

   VALID 250725Z - 251130Z

   SUMMARY...HEAVY SNOW...WITH RATES OF AROUND ONE INCH PER HOUR...WILL
   DEVELOP ACROSS THE DISCUSSION AREA THROUGH 09Z AND CONTINUE THROUGH
   12Z. ACROSS SOUTHERN PORTIONS OF THE AREA...FREEZING RAIN WITH RATES
   EXCEEDING 0.05 INCHES/3 HOURS IS EXPECTED TO DEVELOP.

   DISCUSSION...A SURFACE LOW WAS LOCATED OVER SOUTHEASTERN ONTARIO
   PROVINCE AT 07Z WITH A WARM FRONT EXTENDING EAST ACROSS CENTRAL NEW
   YORK AND THEN SOUTHEAST TO THE VICINITY OF NORTHERN NEW JERSEY. AN
   UPPER LEVEL TROUGH OVER THE EASTERN GREAT LAKES CONTINUES TO LIFT
   NORTHEAST TOWARDS ONTARIO AND QUEBEC PROVINCES.

   LATEST MESOANALYSIS INDICATES STRONG WARM AIR ADVECTION IS OCCURRING
   ACROSS THE DISCUSSION AREA ON STRENGTHENING 850-MB FLOW...LARGELY
   CONTRIBUTING TO THE INCREASE IN PRECIPITATION OBSERVED ON REGIONAL
   RADAR COMPOSITES. WITHIN THIS LARGER-SCALE AREA OF
   PRECIPITATION...LATEST RAP GUIDANCE DEPICTS AN INCREASE IN
   FRONTOGENETICAL FORCING IN THE 850-700 MB LAYER ACROSS NORTHERN
   MAINE OVER THE NEXT FEW HOURS WHERE FORECAST SOUNDINGS SUGGEST
   P-TYPE WILL REMAIN ALL SNOW. THIS WILL LIKELY RESULT IN SNOWFALL
   RATES OF AROUND ONE INCH/HOUR DEVELOPING THROUGH 09Z AND CONTINUING
   BEYOND 12Z.

   ACROSS SOUTHERN PORTIONS OF THE DISCUSSION AREA...RAP FORECAST
   SOUNDINGS OF AN INCREASING ABOVE-FREEZING LAYER/WARM NOSE SUGGEST A
   MIXED P-TYPE BECOMING PREDOMINANTLY FREEZING RAIN WITH RATES GREATER
   THAN 0.05 INCHES/3 HOURS POSSIBLE.

   ..BUNTING.. 03/25/2016


   ATTN...WFO...CAR...

   LAT...LON   46326998 46786994 47186952 47446922 47406904 47256909
               47196898 47266871 47326836 47316815 47066782 46716780
               46306777 45926789 45926858 46006959 46326998 

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 25, 2016
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities