SPC MD 919

[NorthGeorgiaWX]

MD 0919 CONCERNING SEVERE THUNDERSTORM WATCH 294... FOR NEBRASKA

Mesoscale Discussion 0919
NWS Storm Prediction Center Norman OK
0820 PM CDT Thu May 23 2024

Areas affected...Nebraska

Concerning...Severe Thunderstorm Watch 294...

Valid 240120Z - 240315Z

The severe weather threat for Severe Thunderstorm Watch 294
continues.

SUMMARY...A severe threat is expected to continue for several more
hours across southwestern and south-central Nebraska, and may affect
parts of central and eastern Nebraska late this evening. Large hail,
severe wind gusts and an isolated tornado threat will be possible.
New weather watch issuance will be needed to the east of the ongoing
watch.

DISCUSSION...The latest hi-resolution radar imagery from Hasting, NE
shows a short intense line segment just to the west of North Platte.
This storm complex is located on the northwestern edge of a strongly
unstable airmass, where surface dewpoints are in the lower 60s F and
the RAP is estimating MLCAPE in the 2000 to 3000 J/kg range. The
line will continue to move east-southeastward along the northern
edge of this airmass into south-central Nebraska over the next few
hours. RAP forecast soundings in south-central Nebraska have 0-6 km
shear around 40 knots with 700-500 mb lapse rates near 7.5 C/km.
This should continue to support supercell development, with a
potential for large hail. However, linear mode may be favored as the
line of strong to severe storms expands as it moves eastward into
central and eastern Nebraska. Severe wind gusts are expected with
the more intense parts of the line.

..Broyles/Thompson.. 05/24/2024

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

ATTN...WFO...FSD...OAX...GID...LBF...GLD...

LAT...LON   40000031 39989876 40039776 40289715 40829667 41739656
            42279676 42379713 42349803 42179926 41380131 40550150
            40160118 40000031 

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