SPC MD 1045



MD 1045 CONCERNING SEVERE THUNDERSTORM WATCH 313… FOR NORTHWEST SD

MD 1045 Image

Mesoscale Discussion 1045
NWS Storm Prediction Center Norman OK
0809 PM CDT Sun Jun 28 2020

Areas affected...Northwest SD

Concerning...Severe Thunderstorm Watch 313...

Valid 290109Z - 290215Z

The severe weather threat for Severe Thunderstorm Watch 313
continues.

SUMMARY...Large hail and isolated severe wind gusts are possible
across northwest South Dakota this evening.

DISCUSSION...Deep convection that formed over northeast WY has
progressed across the northern Black Hills and has produced isolated
measured severe wind gusts along with hail in excess of 1 inch.
Substantial outflow is racing east-southeast ahead of this
convection while the primary core of storms is moving east-northeast
at roughly 35-40kt. Current speed/movement of this activity suggests
the leading edge will exit ww313 shortly into the western portions
of ABR CWA. With LLJ expected to increase across western SD over the
next few hours there is concern these storms may spread at least
100mi downstream with some threat of severe. New ww may be required
to account for this scenario.

..Darrow.. 06/29/2020

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...ABR...BIS...UNR...

LAT...LON   44550250 45730275 46030001 44829991 44550250 

Read more



Source link

Editor
  • Editor