Day 1 Convective Outlook
Issued: · Valid: –
Summary
Isolated strong to severe thunderstorms are possible this afternoon across parts of northern Utah and parts of Ohio. These storms may produce damaging winds, hail, or gusty winds.
Product Text
000 ACUS01 KWNS 161934 SWODY1 SPC AC 161932 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0232 PM CDT Wed Sep 16 2026 Valid 162000Z - 171200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PARTS OF NORTHERN UTAH AND PARTS OF OHIO AND VICINITY... ...SUMMARY... Isolated strong to severe thunderstorms appear possible today across parts of the Midwest/Ohio Valley and Utah/far northwest Colorado. ...20z Update... The forecast remains generally on track with only minor changes made to the existing outlook. See the discussion below for additional details. ..Chalmers/Weinman.. 09/16/2026 .PREV DISCUSSION... /ISSUED 1112 AM CDT Wed Sep 16 2026/ ...OH and Vicinity... Morning visible satellite imagery shows broken cloud cover across much of OH, which will allow pockets of heating/destabilization and lead to moderate CAPE values by mid-afternoon. Widely scattered thunderstorm development is expected, in a regime of relatively weak westerly flow aloft and poor lapse rates. PWAT values approaching 2 inches and rather steep low-level lapse rates could result in precip-loaded downdrafts capable of strong or occasionally damaging winds. ...UT... Moisture has increased across UT over the past 24 hours, with dewpoints now in the low-mid 50s and PWAT values over 1 inch. This along with ample heating will lead to scattered afternoon thunderstorms. A band of 35-45 knot southwesterly mid-level winds across this area will provide sufficient deep-layer shear for a few rotating storms capable of hail and gusty winds. $$