SPC MD 1420

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

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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