SPC MD 1420



MD 1420 CONCERNING SEVERE THUNDERSTORM WATCH 420… FOR THE CENTRAL AND NORTHERN MINNESOTA VICINITY

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Mesoscale Discussion 1420
NWS Storm Prediction Center Norman OK
0802 PM CDT Fri Aug 07 2020

Areas affected...the central and northern Minnesota vicinity

Concerning...Severe Thunderstorm Watch 420...

Valid 080102Z - 080300Z

The severe weather threat for Severe Thunderstorm Watch 420
continues.

SUMMARY...A small cluster of strong/severe storms continues across
north-central Minnesota, where severe weather remains a threat.

DISCUSSION...A small cluster of strong to severe storms is moving
across north-central Minnesota at this time, in tandem with an
eastward-moving MCV.  The storms are occurring on the northern
fringe of a zone of moderate instability, where veering/increasing
flow with height is supporting storm organization/rotation.

One storm in particular -- now moving eastward across southern
Hubbard County at around 20 kt -- has shown recent radar indications
of updraft rotation.  The storms -- and associated severe risk --
will continue over the next couple of hours, particularly across the
northern half of WW 420.  A more stable airmass exists with eastward
extent, and particularly east of the Mississippi Valley, which --
combined with gradual diurnal cooling -- should eventually lead to a
gradual decrease in convective intensity.

..Goss.. 08/08/2020

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

ATTN...WFO...DLH...MPX...FGF...

LAT...LON   47579428 47139197 45429220 45349374 45749497 46669578
            46879586 47329557 47579428 

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