Alert archive / Nebraska / Wind Chill Advisories in 2013

Wind Chill Advisory 2, NWS Omaha, NE

January 30, 201310 counties in Nebraska; Harrison County, Monona County, Shelby County, Iowa

NWS Omaha, NE issued this wind chill advisory at Jan 30, 2013, 3:25 PM CST for 10 counties in Nebraska; Harrison County, Monona County, Shelby County, Iowa. It took effect at Jan 31, 2013, 6:00 AM CST. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Jan 30, 2013, 3:25 PM CST (21:25 UTC)
In effect from: Jan 31, 2013, 6:00 AM CST
Expired: Feb 1, 2013, 2:25 AM CST
In force: 20 hr
Issued by: NWS Omaha, NE

Counties Harrison County, IA, Monona County, IA, Shelby County, IA, Antelope County, NE, Burt County, NE, Cedar County, NE, Cuming County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 95 km from the middle of the area, began a volume at 21:28 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.4 hours before the alert went out and 327 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: 668 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: -24 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 Omaha, NE wrote its last area forecast discussion before this wind chill advisory went out at Jan 30, 3:10 PM CST, 15 minutes earlier.

Area forecast discussion, Jan 30, 3:10 PM CST, 15 minutes before

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Hazardous weather outlook, Jan 30, 4:37 AM CST, 10 hours 48 minutes before

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In the hours before

Local storm report, Jan 30, 12:32 PM CST, 2 hours 53 minutes before

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Nearby

Wind Chill Advisories in Nebraska, 2013 Wind Chill Advisories in Iowa, 2013 Every wind chill advisory in 2013

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.