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SPC MD 1032

SPC MD 1032

[html]MD 1032 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR PARTS OF SOUTHEAST MT...NORTHEAST WY...AND SOUTHWEST SD
       
MD 1032 Image


Mesoscale Discussion 1032
NWS Storm Prediction Center Norman OK
0525 PM CDT Sat Jun 04 2022

Areas affected...Parts of southeast MT...northeast WY...and
southwest SD

Concerning...Severe potential...Watch unlikely

Valid 042225Z - 050100Z

Probability of Watch Issuance...20 percent

SUMMARY...The risk of isolated strong to severe storms will increase
between 22-00Z, and persist into the evening hours. The primary
hazard should be sporadic large hail.

DISCUSSION...Latest water vapor imagery shows a low-amplitude
midlevel trough moving eastward across the Northwest, with
increasing large-scale ascent overspreading the northern Rockies and
adjacent High Plains. Regional VWP data shows enhanced midlevel
westerly flow acco*panying the trough, while surface observations
show easterly upslope flow across parts of northeast WY into
southeast MT. As surface pressure falls continue over the Rockies, a
modest increase in the easterly low-level flow beneath the
strengthening westerly flow aloft will result in elongated/straight
hodographs characterized by 35-45 kt effective bulk shear. As
diurnal destabilization of the boundary layer continues beneath
steep midlevel lapse rates and increasing large-scale ascent,
isolated to widely scattered splitting cells capable of sporadic
large hail and locally gusty winds should spread eastward into the
afternoon. The marginal and localized nature of the threat will
likely preclude watch issuance.

..Weinman/Hart.. 06/04/2022

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

ATTN...WFO...UNR...CYS...BYZ...RIW...

LAT...LON   43880655 44350709 44760760 44920784 45350829 45870835
            46200813 46230760 46180647 45760514 44750387 43780358
            43260366 42800452 42860537 43370598 43880655


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Source: SPC MD 1032 (http://ht**://www.spc.noaa.gov/products/md/md1032.html)