|Mesoscale Discussion 404|
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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.
...Please see www.spc.noaa.gov for graphic product...
LAT...LON 41737357 42867250 43127063 41407181 40797240 40617364
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