ACUS11 KWNS 260044
SWOMCD
SPC MCD 260043=20
ARZ000-MOZ000-OKZ000-KSZ000-260245-

Mesoscale Discussion 0535
NWS Storm Prediction Center Norman OK
0743 PM CDT Sat Apr 25 2026

Areas affected...Southeast Kansas into northeast Oklahoma

Concerning...Severe Thunderstorm Watch 145...

Valid 260043Z - 260245Z

The severe weather threat for Severe Thunderstorm Watch 145
continues.

SUMMARY...A corridor of higher hail, and perhaps severe wind,
potential will persist across far southeast Kansas and northwest
Oklahoma for the next few hours.

DISCUSSION...Regional radar imagery over the past 1-2 hours has
depicted several transient, and likely elevated, supercells from far
southeast KS into northeast OK and far northwest AR with a history
of producing golf ball sized hail and occasional severe winds. Storm
motions to the southeast within the zone of initiation is promoting
destructive storm interactions, and precluding a more prolonged hail
threat from any one storm. However, GOES IR imagery continues to
show periodic intense updrafts, and new convection continues to
develop within this zone of focused warm advection (likely focused
near the 850 mb level).=20

New development is particularly noted on the southwest flank of a
gradually expanding cold pool where ascent appears to be maximized
and MUCAPE remains near 2000 J/kg. The regional KINX VWP also
continues to sample very strong speed shear through a deep layer.
Consequently, new convection developing across northeast OK over the
next few hours will likely continue to see transient organization -
possibly into supercells - with an attendant threat for large hail.
Storm interactions/destructive interference may continue to limit
longevity and intensity of any particular cell, but latest high-res
guidance suggests a threat for severe hail, and perhaps sporadic
severe gusts, will likely persist through 04-05 UTC.

..Moore.. 04/26/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_2kG3m1cKC49xU5foNg5FL_VZ7U_zE7dUy57zab0lvtHo3FEuBdGBwOUpZxZJShnMQF3lbI4y= UrdBbxN_fV_TlHQNOI$ for graphic product...

ATTN...WFO...SGF...TSA...ICT...

LAT...LON 37419597 37169524 36919474 36459417 36129398 35889398
35629427 35589460 35569506 35719547 35859588 36149635
36639668 37099665 37299654 37409641 37419597=20

MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


=3D =3D =3D
To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

--- SBBSecho 3.28-Linux
* Origin: Capitol City Online (1:2320/107)