ACUS11 KWNS 150020
SWOMCD
SPC MCD 150020
IAZ000-MOZ000-NEZ000-150115-

Mesoscale Discussion 2298
NWS Storm Prediction Center Norman OK
0720 PM CDT Mon Sep 14 2026

Areas affected...portions of southeastern Nebraska into central Iowa

Concerning...Tornado Watch 669...

Valid 150020Z - 150115Z

The severe weather threat for Tornado Watch 669 continues.

SUMMARY...A few severe gusts and a tornado remain possible over the
next few hours. The best chance for any severe will be with a
thunderstorm cluster traversing a differential heating boundary over
the next 1-2 hours.

DISCUSSION...A loosely organized line of thunderstorms is crossing
the NE/IA border with a history of severe gusts. These storms will
continue to propagate eastward into a highly sheared, destabilizing
airmass, accompanied by a severe gust threat. The best chance for
severe gusts, including any additional 75+ mph gusts or a brief
tornado will be with the embedded thunderstorm cluster that is
currently traversing a differential heating boundary.

..Squitieri.. 09/15/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!8QVW4lAuKrYMGysHTYNIJ5SuC3EZ3eZalbSNZjMMGPzwAf2v2uoOE36n18401J0wzPsjdinmZNTF_0zpwRD0A9WNXZg$ for graphic product...

ATTN...WFO...DMX...EAX...OAX...

LAT...LON 40279733 41159633 41529550 41819444 41789399 41669374
41309363 40889387 40539456 40279558 40079620 40009694
40279733

MOST PROBABLE PEAK TORNADO INTENSITY...85-110 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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