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Mesoscale Discussion 1084
NWS Storm Prediction Center Norman OK
0553 PM CDT Thu Jul 02 2020
Areas affected...Northeast Kansas and into north-central Nebraska
Concerning...Severe Thunderstorm Watch 323...
Valid 022253Z - 030100Z
The severe weather threat for Severe Thunderstorm Watch 323
continues.
SUMMARY...The threat for severe wind and hail continues across WW
323, and a new watch may be needed for portions of north-central
Nebraska.
DISCUSSION...Recent radar trends from across northwest KS and
southwest NE show a gradual transition from discrete/semi-discrete
storm modes into linear segments. This is likely due continued
ascent along an eastward moving outflow boundary and continued
cold-pool amalgamation. Discrete convection has also recently been
noted across the southwestern NE Panhandle along the northern
periphery of an outflow boundary. In the near term, the risk for
severe hail and wind will continue given sufficient deep layer shear
(30-40 knots) and 3000-4000 J/kg MLCAPE. However, wind may become
the primary threat as upscale growth continues and storms move
eastward into a weaker shear environment. Additionally, the continue
east/northeast propagation of the outflow boundary into
north-central NE may initiate additional thunderstorms. Agitated
cumulus across this region suggests limited inhibition remains in
place, and despite relatively weaker shear, severe winds, and
perhaps severe hail, will be possible. As such, a new watch may be
needed later this evening for this area.
..Moore/Thompson.. 07/02/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GID...LBF...GLD...PUB...BOU...CYS...
LAT...LON 38640276 39610281 40660279 41070343 42060369 42690344
42950277 42940132 42509988 41219958 40199988 39320031
38730088 38600181 38640276
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