Alert archive / Nebraska / Wind Advisories in 2009

Wind Advisory 12, NWS Omaha, NE

May 19, 200915 counties in Nebraska; Monona County, Iowa

NWS Omaha, NE issued this wind advisory at May 19, 2009, 3:43 AM CDT for 15 counties in Nebraska; Monona County, Iowa. It took effect at May 19, 2009, 12:00 PM CDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: May 19, 2009, 3:43 AM CDT (08:43 UTC)
In effect from: May 19, 2009, 12:00 PM CDT
Expired: May 19, 2009, 8:00 PM CDT
In force: 8 hr
Issued by: NWS Omaha, NE

Counties Monona County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Knox County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Stanton County, NE, Thurston County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 98 km from the middle of the area, began a volume at 08:43 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, 8.7 hours before the alert went out and 98 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: 2636 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 337 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.

Hazardous weather outlook, May 18, 11:11 PM CDT, 4 hours 32 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.