Alert archive / Iowa / Winter Storm Warnings in 2026
Winter Storm Warning 1, NWS Des Moines, IA
NWS Des Moines, IA issued this winter storm warning at Feb 19, 2026, 10:45 AM CST for 20 counties in Iowa. It took effect at Feb 19, 2026, 3:00 PM CST. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 19, 2026, 10:45 AM CST (16:45 UTC)
- In effect from
- Feb 19, 2026, 3:00 PM CST
- Expired
- Feb 20, 2026, 9:00 AM CST
- In force
- 18 hr
- Issued by
- NWS Des Moines, IA
Counties Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Dallas County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Marshall County, IA, Polk County, IA, Story County, IA, Tama County, IA, Webster County, IA
The radar
The Des Moines radar (KDMX), 45 km from the middle of the area, began a volume at 16:44 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 4.8 hours before the alert went out and 302 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 619 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Des Moines, IA wrote its last area forecast discussion before this winter storm warning went out at Feb 19, 6:11 AM CST, 4 hours 34 minutes earlier.
Area forecast discussion, Feb 19, 6:11 AM CST, 4 hours 34 minutes before
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</html>Hazardous weather outlook, Feb 19, 4:24 AM CST, 6 hours 21 minutes before
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</html>Nearby
Winter Storm Warnings in Iowa, 2026Every winter storm warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.