Severe Storm Outlook Narrative (AC)
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ACUS11 KWNS 210909
SWOMCD
SPC MCD 210908
IAZ000-NEZ000-KSZ000-211115-
Mesoscale Discussion 0866
NWS Storm Prediction Center Norman OK
0408 AM CDT Tue May 21 2024
Areas affected...southeastern Nebraska
Concerning...Severe Thunderstorm Watch 274...
Valid 210908Z - 211115Z
The severe weather threat for Severe Thunderstorm Watch 274
continues.
SUMMARY...Local severe risk continues across the southeastern
quarter of Nebraska.
DISCUSSION...Thunderstorms continue across a sizable portion of
southeastern Nebraska at this time, with the strongest convection in
a roughly north-south band crossing the Howard/Hall/Kearney/Franklin
County vicinity. This convection is ongoing either side of the
primary surface baroclinic zone, near the nose of a 60-kt
south-southwesterly low-level jet.
Downstream from this eastward-moving band of storms, around 1500
J/kg mixed-layer CAPE is indicated by RAP-based objective analysis
on the warm side of the front. This -- along with lift provided by
the surface front and aforementioned low-level jet -- should allow
storms to persist over the next couple of hours, with a couple of
wind gusts to near severe levels still possible, along with marginal
hail.
..Goss.. 05/21/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...OAX...GID...
LAT...LON 39909896 40599885 41449792 42059632 41079567 40409581
39909896