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 132
< Previous MD         Next MD >
MD 132 graphic

   Mesoscale Discussion 0132
   NWS Storm Prediction Center Norman OK
   1048 PM CST Mon Jan 23 2017

   Areas affected...Portions of Maine...VT...NH...and northeastern NY

   Concerning...Winter mixed precipitation 

   Valid 240448Z - 241045Z

   SUMMARY...Areas of winter mixed precipitation will continue to
   spread northward during the overnight hours into early Tuesday
   morning.

   DISCUSSION...Areas of sleet, freezing rain, and snow -- addressed in
   Mesoscale Discussion 131 -- will continue to spread northward across
   portions of New England and northeast NY through the overnight hours
   and continue into early Tuesday morning. This winter mixed
   precipitation has already become widespread across portions of
   central and eastern New York into adjacent parts of western New
   England -- in association with the warm conveyor and deformation
   structures accompanying a deep cyclone advancing northward near the
   Atlantic Coast. In many areas, temperatures marginally above
   freezing within an elevated warm layer -- e.g., sampled by the 00Z
   Albany sounding -- and notably elevated dendritic growth zones
   (relative to the strongest ascent in the profile) will support sleet
   and freezing rain, given sub-freezing wet-bulb surface temperatures
   across the area. Freezing-rain rates around 0.02-0.04 inch per hour,
   and sleet-accumulation rates locally reaching around 0.05-0.10 inch
   per hour, will be possible. Deeper cold air/subfreezing profiles may
   tend to favor snow in some areas -- e.g., from parts of northeast NY
   eastward toward central Maine. Snowfall rates of 0.5 inch to locally
   1 inch per hour may accompany this activity.

   ..Cohen.. 01/24/2017


   ATTN...WFO...CAR...GYX...BTV...ALY...

   LAT...LON   44556864 43677026 43177069 42827120 42717163 42867200
               43397257 43647411 44027425 44677337 44897206 44996979
               44556864 

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: January 24, 2017
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities