Alert archive / Nebraska / Red Flag Warnings in 2015

Red Flag Warning 6, NWS Omaha, NE

March 29, 201522 counties in Nebraska; 8 counties in Iowa

NWS Omaha, NE issued this red flag warning at Mar 29, 2015, 3:56 AM CDT for 22 counties in Nebraska; 8 counties in Iowa. It took effect at Mar 29, 2015, 1:00 PM CDT. It was in force for 3 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 29, 2015, 3:56 AM CDT (08:56 UTC)
In effect from: Mar 29, 2015, 1:00 PM CDT
Expired: Mar 29, 2015, 3:33 PM CDT
In force: 3 hr
Issued by: NWS Omaha, NE

All 30 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, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Pierce County, NE, Platte 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), 35 km from the middle of the area, began a volume at 08:53 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 (KFOE), launched 00:00Z, 8.9 hours before the alert went out and 298 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: 1673 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 290 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 red flag 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 red flag warning went out at Mar 28, 6:36 PM CDT, 9 hours 20 minutes earlier.

Area forecast discussion, Mar 28, 6:36 PM CDT, 9 hours 20 minutes before

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Hazardous weather outlook, Mar 28, 3:45 PM CDT, 12 hours 11 minutes before

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Nearby

Red Flag Warnings in Nebraska, 2015 Red Flag Warnings in Iowa, 2015 Every red flag warning 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.