Alert archive / Nebraska / Wind Advisories in 2009

Wind Advisory 6, NWS Omaha, NE

March 22, 200928 counties in Nebraska; 8 counties in Iowa

NWS Omaha, NE issued this wind advisory at Mar 22, 2009, 3:13 PM CDT for 28 counties in Nebraska; 8 counties in Iowa. It took effect at Mar 23, 2009, 9:00 AM CDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Mar 22, 2009, 3:13 PM CDT (20:13 UTC)
In effect from: Mar 23, 2009, 9:00 AM CDT
Expired: Mar 23, 2009, 10:00 PM CDT
In force: 13 hr
Issued by: NWS Omaha, NE

All 36 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Madison County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 14 km from the middle of the area, began a volume at 20:12 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

Topeka, KS (KTOP), launched 12:00Z, 8.2 hours before the alert went out and 260 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: 1180 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 243 m²/s²
0-3 km storm-relative helicity: 268 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 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 advisory went out at Mar 22, 3:02 PM CDT, 11 minutes earlier.

Area forecast discussion, Mar 22, 3:02 PM CDT, 11 minutes before

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Hazardous weather outlook, Mar 22, 11:59 AM CDT, 3 hours 14 minutes before

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Nearby

Wind Advisories in Nebraska, 2009 Wind Advisories in Iowa, 2009 Every wind advisory 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.