Alert archive / Nebraska / Red Flag Warnings in 2014

Red Flag Warning 11, NWS Omaha, NE

April 25, 201415 counties in Nebraska; 5 counties in Iowa

NWS Omaha, NE issued this red flag warning at Apr 25, 2014, 9:09 AM CDT for 15 counties in Nebraska; 5 counties in Iowa. It took effect at Apr 25, 2014, 11:00 AM CDT. It was in force for 8 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: Apr 25, 2014, 9:09 AM CDT (14:09 UTC)
In effect from: Apr 25, 2014, 11:00 AM CDT
Expired: Apr 25, 2014, 7:17 PM CDT
In force: 8 hr
Issued by: NWS Omaha, NE

Counties Fremont County, IA, Mills County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Butler County, NE, Cass County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE

The radar

The Omaha radar (KOAX), 65 km from the middle of the area, began a volume at 14:10 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 12:00Z, 2.2 hours before the alert went out and 200 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: 2439 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 162 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 Apr 24, 6:43 PM CDT, 14 hours 26 minutes earlier.

Area forecast discussion, Apr 24, 6:43 PM CDT, 14 hours 26 minutes before

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Hazardous weather outlook, Apr 24, 5:09 PM CDT, 16 hours before

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Nearby

Red Flag Warnings in Nebraska, 2014 Red Flag Warnings in Iowa, 2014 Every red flag warning in 2014

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.