Alert archive / Nebraska / Wind Chill Advisories in 2015

Wind Chill Advisory 2, NWS Omaha, NE

January 5, 20155 counties in Nebraska

NWS Omaha, NE issued this wind chill advisory at Jan 5, 2015, 8:55 PM CST for 5 counties in Nebraska. It took effect at Jan 6, 2015, 3:00 AM CST. It was in force for 23 min.

The area

The counties it named.

The facts

Issued: Jan 5, 2015, 8:55 PM CST (02:55 UTC)
In effect from: Jan 6, 2015, 3:00 AM CST
Expired: Jan 6, 2015, 3:23 AM CST
In force: 23 min
Issued by: NWS Omaha, NE

Counties Antelope County, NE, Cedar County, NE, Knox County, NE, Pierce County, NE, Wayne County, NE

The radar

The Sioux Falls radar (KFSD), 152 km from the middle of the area, began a volume at 03:00 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

Omaha, NE (KOAX), launched 00:00Z, 2.9 hours before the alert went out and 155 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: 936 m above ground
0-6 km bulk shear: 112 kt
0-1 km storm-relative helicity: 659 m²/s²
0-3 km storm-relative helicity: 549 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 5, 5:10 PM CST, 3 hours 45 minutes earlier.

Area forecast discussion, Jan 5, 5:10 PM CST, 3 hours 45 minutes before

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Hazardous weather outlook, Jan 5, 8:18 PM CST, 37 minutes before

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In the hours before

Local storm report, Jan 5, 4:48 PM CST, 4 hours 7 minutes before

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Special weather statement, Jan 5, 8:00 PM CST, 55 minutes before

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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jan 5, 8:55 PM CST	Winter Weather Advisory	OAX	Antelope, Boone, Burt, Butler, Cedar, Colfax and 9 more	6 hr
Jan 6, 3:23 AM CST	Wind Chill Advisory	OAX	Antelope, Cedar, Knox, Pierce, Wayne	5 hr
Jan 6, 2:37 PM CST	Wind Chill Warning	OAX	Antelope, Burt, Cedar, Cuming, Dodge, Knox and 6 more	21 hr
Jan 6, 2:37 PM CST	Wind Chill Advisory	OAX	Boone, Butler, Cass, Colfax, Douglas, Gage and 12 more	21 hr

Nearby

Wind Chill Advisories in Nebraska, 2015 Every wind chill advisory in 2015

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.