Alert archive / Nebraska / Winter Storm Warnings in 2009

Winter Storm Warning 1, NWS Hastings, NE

February 12, 200923 counties in Nebraska

NWS Hastings, NE issued this winter storm warning at Feb 12, 2009, 12:24 PM CST for 23 counties in Nebraska. It took effect at Feb 13, 2009, 3:00 AM CST. It was in force for 13 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 12, 2009, 12:24 PM CST (18:24 UTC)
In effect from: Feb 13, 2009, 3:00 AM CST
Expired: Feb 13, 2009, 3:43 PM CST
In force: 13 hr
Issued by: NWS Hastings, NE

All 23 counties

Adams County, NE, Buffalo County, NE, Clay County, NE, Dawson County, NE, Fillmore County, NE, Franklin County, NE, Furnas County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Howard County, NE, Kearney County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Sherman County, NE, Valley County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 53 km from the middle of the area, began a volume at 18:30 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 6.4 hours before the alert went out and 169 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: 1335 m above ground
0-6 km bulk shear: 90 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -3 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 winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this winter storm warning went out at Feb 12, 11:32 AM CST, 52 minutes earlier.

Area forecast discussion, Feb 12, 11:32 AM CST, 52 minutes before

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Hazardous weather outlook, Feb 12, 6:08 AM CST, 6 hours 16 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 12, 12:24 PM CST	Winter Weather Advisory	GID	Thayer	27 hr

Nearby

Winter Storm Warnings in Nebraska, 2009 Every winter storm warning in 2009

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.