SPC MD 1054



MD 1054 CONCERNING TORNADO WATCH 318… FOR NORTHERN HIGH PLAINS

MD 1054 Image

Mesoscale Discussion 1054
NWS Storm Prediction Center Norman OK
0743 PM CDT Mon Jun 29 2020

Areas affected...Northern High Plains

Concerning...Tornado Watch 318...

Valid 300043Z - 300245Z

The severe weather threat for Tornado Watch 318 continues.

SUMMARY...Scattered severe storms will continue this evening across
the northern High Plains.

DISCUSSION...Convection continues to increase across the northern
High Plains this evening, primarily along a corridor from near the
Black Hills into western ND. Conditions across western ND remain
apparently favorable for tornadic supercells with strong
shear/buoyancy.

Latest satellite imagery suggests favorable venting aloft as anvils
across western ND are expanding significantly, indicative of strong
updrafts. One long-lived supercell over McKenzie County ND is
beginning to surge east where it will soon merge with several robust
updrafts. This may ultimately evolve into a larger complex of storms
that should eventually track northeast toward the international
border.

Farther south, numerous discrete updrafts are spreading north across
the Black Hills region. Western/northern periphery of the higher
terrain appear a bit more favorable for potential tornado
development given the stronger low-level shear. Otherwise, large
hail remains likely with the strongest convection as it spreads
north-northeast.

..Darrow.. 06/30/2020

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

ATTN...WFO...BIS...UNR...BYZ...GGW...RIW...

LAT...LON   44050641 49040561 49010162 44050277 44050641 

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