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

Mesoscale Discussion 404
< Previous MD         Next MD >
MD 404 graphic

   Mesoscale Discussion 0404
   NWS Storm Prediction Center Norman OK
   0156 PM CDT Wed Apr 21 2021

   Areas affected...CT...Most of MA...Southern NH

   Concerning...Severe Thunderstorm Watch 97...

   Valid 211856Z - 212030Z

   The severe weather threat for Severe Thunderstorm Watch 97

   SUMMARY...Threat for damaging wind gusts continues over southern New

   DISCUSSION...Low-topped convective line continues to move
   eastward/northeastward at 40-45 kt into southern New England. Gusts
   around 40-45 kt have been reported with this line thus far.
   Downstream areas of western/central MA and CT are characterized by
   temperatures in the mid 60s and steep low-level lapse rates (i.e. 7
   to 8 deg C per km from 0-3 km). As such, the expectation is for
   gusts of similar strength (i.e. 40 to 50 kt) to continue as the line
   moves across western/central MA and CT over the next hour or so.

   Some potential exists for the deep convection along the front to
   reach into far southern New Hampshire, with an attendant threat for
   a few damaging wind gusts.

   ..Mosier.. 04/21/2021

   ...Please see for graphic product...


   LAT...LON   41737357 42867250 43127063 41407181 40797240 40617364

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.
Page last modified: January 01, 1970
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities