Alert archive / Iowa / Wind Chill Advisories in 2014

Wind Chill Advisory 8, NWS Quad Cities, IA

February 1, 20149 counties in Iowa

NWS Quad Cities, IA issued this wind chill advisory at Feb 1, 2014, 2:36 PM CST for 9 counties in Iowa. It took effect at Feb 2, 2014, 12:00 AM CST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued: Feb 1, 2014, 2:36 PM CST (20:36 UTC)
In effect from: Feb 2, 2014, 12:00 AM CST
Expired: Feb 2, 2014, 9:00 AM CST
In force: 9 hr
Issued by: NWS Quad Cities, IA

Counties Benton County, IA, Buchanan County, IA, Cedar County, IA, Delaware County, IA, Dubuque County, IA, Iowa County, IA, Johnson County, IA, Jones County, IA, Linn County, IA

The radar

The Quad Cities radar (KDVN), 94 km from the middle of the area, began a volume at 20:36 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, 8.6 hours before the alert went out and 350 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: 1168 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 128 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 Quad Cities, IA wrote its last area forecast discussion before this wind chill advisory went out at Feb 1, 2:32 PM CST, 4 minutes earlier.

Area forecast discussion, Feb 1, 2:32 PM CST, 4 minutes before

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Hazardous weather outlook, Feb 1, 12:06 PM CST, 2 hours 30 minutes before

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In the hours before

Local storm report, Feb 1, 1:02 PM CST, 1 hour 34 minutes before

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Local storm report, Feb 1, 1:32 PM CST, 1 hour 4 minutes before

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Local storm report, Feb 1, 1:41 PM CST, 55 minutes before

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Local storm report, Feb 1, 1:54 PM CST, 42 minutes before

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Local storm report, Feb 1, 2:06 PM CST, 30 minutes before

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Local storm report, Feb 1, 2:13 PM CST, 23 minutes before

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Nearby

Wind Chill Advisories in Iowa, 2014 Every wind chill advisory in 2014

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.