Alert archive / Iowa / Wind Chill Advisories in 2022

Wind Chill Advisory 14, NWS Des Moines, IA

February 2, 202232 counties in Iowa

NWS Des Moines, IA issued this wind chill advisory at Feb 2, 2022, 3:28 AM CST for 32 counties in Iowa. It took effect at Feb 2, 2022, 6:00 PM CST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Feb 2, 2022, 3:28 AM CST (09:28 UTC)
In effect from: Feb 2, 2022, 6:00 PM CST
Expired: Feb 3, 2022, 12:00 PM CST
In force: 18 hr
Issued by: NWS Des Moines, IA

All 32 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Crawford County, IA, Emmet County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Humboldt County, IA, Kossuth County, IA, Marshall County, IA, Palo Alto County, IA, Pocahontas County, IA, Sac County, IA, Story County, IA, Union County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 75 km from the middle of the area, began a volume at 09:30 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 00:00Z, 9.5 hours before the alert went out and 276 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 877 m above ground
0-6 km bulk shear: 87 kt
0-1 km storm-relative helicity: -219 m²/s²
0-3 km storm-relative helicity: -130 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory 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 wind chill advisory went out at Feb 1, 5:28 PM CST, 10 hours earlier.

Area forecast discussion, Feb 1, 5:28 PM CST, 10 hours before

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Hazardous weather outlook, Feb 1, 2:41 PM CST, 12 hours 47 minutes before

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Nearby

Wind Chill Advisories in Iowa, 2022 Every wind chill advisory in 2022

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.