Alert archive / Nebraska / Winter Storm Warnings in 2009

Winter Storm Warning 3, NWS Omaha, NE

March 30, 20097 counties in Nebraska

NWS Omaha, NE issued this winter storm warning at Mar 30, 2009, 4:06 AM CDT for 7 counties in Nebraska. It took effect at Mar 31, 2009, 4:00 AM CDT. It was in force for 15 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: Mar 30, 2009, 4:06 AM CDT (09:06 UTC)
In effect from: Mar 31, 2009, 4:00 AM CDT
Expired: Mar 31, 2009, 7:00 PM CDT
In force: 15 hr
Issued by: NWS Omaha, NE

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

The radar

The Omaha radar (KOAX), 146 km from the middle of the area, began a volume at 09:03 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 00:00Z, 9.1 hours before the alert went out and 273 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: 3471 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 255 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 Omaha, NE wrote its last area forecast discussion before this winter storm warning went out at Mar 30, 3:11 AM CDT, 55 minutes earlier.

Area forecast discussion, Mar 30, 3:11 AM CDT, 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
Mar 30, 3:36 PM CDT	Winter Weather Advisory	OAX	Colfax, Cuming, Dodge, Platte, Stanton, Thurston	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.