ACUS11 KWNS 172032
SWOMCD
SPC MCD 172031=20
MOZ000-IAZ000-KSZ000-172200-

Mesoscale Discussion 0479
NWS Storm Prediction Center Norman OK
0331 PM CDT Fri Apr 17 2026

Areas affected...portions of northeastern Kansas...northwestern
Missouri...and extreme southern Iowa

Concerning...Tornado Watch 130...

Valid 172031Z - 172200Z

The severe weather threat for Tornado Watch 130 continues.

SUMMARY...Tornado threat is increasing across portions of Tornado
Watch 130.

DISCUSSION...Two lines of supercells have become more well
established over the past hour from southeastern Kansas into
southern Iowa, with strengthening low-level rotation noted with some
storms and a tornado recently reported in Atchison County, Kansas.
The environment near/ahead of these storms is within a zone of
favorable low-level moisture and increasing low-level shear, with
the latest mesoanalysis and EAX/INX VAD profiles indicating around
100 m2/s2 0-500 m SRH and effective STP of 2+. With a coincident
favorable thermodynamic environment, the potential for tornadoes
(and perhaps a strong tornado) is increasing.

..Chalmers.. 04/17/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7Dwp5TeaOTrzAdsZDgY2Co-BMgrH2Om8sANT4VMAzyFNXolCydhEciUsElB_y54mfuWNqpznv= JPUOkwWmsYWV5zUSLQ$ for graphic product...

ATTN...WFO...SGF...DMX...EAX...TOP...ICT...

LAT...LON 38839329 38259393 37219490 37019550 37009662 37529695
38019688 38489648 39019594 40289451 40669396 40769333
40639276 40459252 40199239 39789242 39299291 38839329=20

MOST PROBABLE PEAK TORNADO INTENSITY...100-130 MPH
MOST PROBABLE PEAK WIND GUST...75-90 MPH
MOST PROBABLE PEAK HAIL SIZE...2.75-4.25 IN


=3D =3D =3D
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