SPC MD 1775
SPC MD 1775
[html]MD 1775 CONCERNING SEVERE THUNDERSTORM WATCH 582... FOR PARTS OF SOUTHEASTERN NE AND SOUTHWESTERN IA
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Mesoscale Discussion 1775
NWS Storm Prediction Center Norman OK
0604 PM CDT Wed Jul 31 2024
Areas affected...Parts of southeastern NE and southwestern IA
Concerning...Severe Thunderstorm Watch 582...
Valid 312304Z - 010000Z
The severe weather threat for Severe Thunderstorm Watch 582
continues.
SUMMARY...A swath of 75-90 mph wind gusts is possible with an MCS
moving eastward across southeastern Nebraska into southwestern IA
through at least 01Z.
DISCUSSION...As of 2250Z, radar data from KOAX indicates a
well-organized, forward-propagating MCS tracking east-northeastward
across southeastern NE into southwestern IA at around 45 kt. This
MCS has a well-established rear-inflow jet and northern book-end
vortex. Wind gusts upwards of 80-90 mph have been reported with the
MCS in southeastern NE. Downstream, extreme surface-based
instability (4000-4500 J/kg MLCAPE) and around 40 kt of deep-layer
shear (per VWP data) oriented perpendicular the gust front should
support the maintenance of this MCS across southeastern IA through
at least 01Z. Wind gusts of 75-90 mph are the main concern, and
brief mesovortex tornadoes will also remain possible.
..Weinman.. 07/31/2024
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DMX...EAX...OAX...
LAT...LON 41149604 41509632 41759621 42089581 42199529 42189496
42099459 41539423 40909446 40639503 40539567 40689597
41149604
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Source: SPC MD 1775 (http://ht**://www.spc.noaa.gov/products/md/md1775.html)