|
Mesoscale Discussion 1393 |
[an error occurred while processing this directive]
|
|
Mesoscale Discussion 1393
NWS Storm Prediction Center Norman OK
1253 AM CDT Sat Jun 21 2025
Areas affected...portions of northern MN
Concerning...Severe Thunderstorm Watch 449...
Valid 210553Z - 210730Z
The severe weather threat for Severe Thunderstorm Watch 449
continues.
SUMMARY...Damaging wind potential increasing across northern MN.
DISCUSSION...A new, intense bow is developing across northwest MN as
a series of supercells have merged and strong rear-inflow (noted in
the KMVX VWP data) from the west spreads across the region in tandem
with a 45+ kt low-level jet. This bowing segment, currently over
Beltrami and Hubbard Counties is expected to develop east along the
warm front draped west to east across northern MN. While low-level
inhibition is quite strong due to nocturnal stabilization of the
near-surface, moderate to strong instability, steep lapse rates, and
a very favorable shear parameter space will likely maintain this
organized bowing structure for at least a couple of hours. An
attendant risk for 75+ mph gusts will accompany this bowing segment,
with so potential from a tornado or two near the apex. Additional
warm advection storms developing ahead of this bow also will pose a
risk for large hail into northeast MN.
..Leitman.. 06/21/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DLH...FGF...
LAT...LON 47759533 47939456 47959338 47869263 47729206 47489182
47179198 46939251 46889342 46909459 47039517 47119544
47759533
MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
MOST PROBABLE PEAK WIND GUST...85-100 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN
|
Top/All Mesoscale Discussions/Forecast Products/Home
|
|