ACUS11 KWNS 270024
SWOMCD
SPC MCD 270024=20
OKZ000-TXZ000-270230-

Mesoscale Discussion 0554
NWS Storm Prediction Center Norman OK
0724 PM CDT Sun Apr 26 2026

Areas affected...Southern Oklahoma and northwest Texas

Concerning...Tornado Watch 151...

Valid 270024Z - 270230Z

The severe weather threat for Tornado Watch 151 continues.

SUMMARY...The potential for additional severe thunderstorms
continues across portions of southern Oklahoma and northwest Texas.
If storms develop, they will pose a threat for very large hail,
tornadoes, and severe gusts.

DISCUSSION...Over the past hour, a pair of left/right-split
supercells has produced several very large hail reports upwards of 3
inches. Although the left-split has recently weakened, the right
moving supercell residing along the Red River has recently shown an
uptick in intensity after a temporary weakening. The near-storm
thermodynamic environment remains favorable for storm maintenance,
and the kinematic environment is forecast to improve over the next
few hours as a nocturnal jet gradually strengthens. As such, the
greatest near-term severe risk will continue to reside immediately
downstream of the ongoing supercell where very large hail will
remain the primary hazard for the short-term (though some increase
in tornado potential is anticipated later this evening coincident
with the strengthening nocturnal jet).

Further to the west, clustering cumulus on the immediate dry side of
the dryline continues to gradually deepen per GOES IR imagery.
Focused low-level convergence along a bulge in the dryline along
with increasing synoptic ascent (associated with an approaching
upper wave to the west) may support deeper convective towers over
the next couple of hours. This may present an opportunity for
additional thunderstorm development along the dryline that could
pose a threat for all hazards across western portions of WW 151.
While confidence in this scenario is somewhat low given the
approaching onset of nocturnal cooling/stabilization, latest
high-res guidance suggests that additional robust convection is
plausible within the next 1-2 hours.

..Moore.. 04/27/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!49Cmhuup9PgFnrV5OEeWTwfU44tEERF6YuimbW6kdXNNKndZmr55MCBdX3yWacc_QDgqHIUOe= HOohoHyX9m7NxKlP7I$ for graphic product...

ATTN...WFO...FWD...OUN...SJT...

LAT...LON 33259958 33579953 34599932 34829922 34889891 34829734
34619712 34259706 33939716 33639744 33369792 33189833
33059876 33019904 32999928 33049949 33259958=20

MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH
MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


=3D =3D =3D
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