Alert archive / Nebraska / Flash Flood Warnings in 2010

Flash Flood Warning 4, NWS Omaha, NE

June 10, 20109 counties in Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 10, 2010, 10:07 AM CDT for 9 counties in Nebraska. It was in force for 6 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: Jun 10, 2010, 10:07 AM CDT (15:07 UTC)
Expired: Jun 10, 2010, 4:00 PM CDT
In force: 6 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Antelope County, NE, Boone County, NE, Burt County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Madison County, NE, Platte County, NE, Stanton County, NE

The radar

The Omaha radar (KOAX), 91 km from the middle of the area, began a volume at 15:10 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

Omaha, NE (KOAX), launched 12:00Z, 3.1 hours before the alert went out and 91 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: 443 J/kg
Mixed-layer CIN: -154 J/kg
Mixed-layer LCL: 855 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 10, 3:56 AM CDT, 6 hours 11 minutes earlier.

Area forecast discussion, Jun 10, 3:56 AM CDT, 6 hours 11 minutes before

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Hazardous weather outlook, Jun 10, 4:40 AM CDT, 5 hours 27 minutes before

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In the hours before

Local storm report, Jun 10, 7:18 AM CDT, 2 hours 49 minutes before

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Local storm report, Jun 10, 8:09 AM CDT, 1 hour 58 minutes before

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Special weather statement, Jun 10, 8:21 AM CDT, 1 hour 46 minutes before

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Local storm report, Jun 10, 8:28 AM CDT, 1 hour 39 minutes before

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Local storm report, Jun 10, 9:20 AM CDT, 47 minutes before

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Special weather statement, Jun 10, 9:55 AM CDT, 12 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
Jun 10, 5:10 AM CDT	Severe Thunderstorm Warning	OAX	Boone, Madison, Platte	50 min
Jun 10, 6:01 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte	44 min
Jun 10, 6:46 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Cuming, Dodge, Stanton	44 min
Jun 10, 7:27 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge	48 min
Jun 10, 7:41 AM CDT	Areal Flood Advisory	OAX	Boone, Colfax, Cuming, Dodge, Madison, Platte and 1 more	3 hr
Jun 10, 8:09 AM CDT	Severe Thunderstorm Warning	OAX	Thurston, Wayne	51 min
Jun 10, 9:29 AM CDT	Severe Thunderstorm Warning	OAX	Douglas, Saunders	31 min
Jun 10, 10:06 AM CDT	Areal Flood Advisory	OAX	Dodge, Douglas, Sarpy, Saunders, Washington	3 hr
Jun 10, 11:18 AM CDT	Flash Flood Warning	OAX	Butler, Colfax, Dodge, Platte, Saunders	6 hr
Jun 10, 4:04 PM CDT	Areal Flood Warning	OAX	Boone, Colfax, Cuming, Dodge, Madison, Platte and 1 more	6 hr
Jun 10, 4:16 PM CDT	Flash Flood Watch	OAX	Antelope, Boone, Burt, Butler, Cedar, Colfax and 12 more	15 hr
Jun 10, 4:39 PM CDT	River Flood Warning	OAX	Otoe	34 days
Jun 10, 4:39 PM CDT	River Flood Warning	OAX	Richardson	72 days
Jun 10, 5:20 PM CDT	Areal Flood Advisory	OAX	Butler	8 hr
Jun 10, 5:31 PM CDT	Areal Flood Warning	OAX	Colfax	8 hr

Nearby

Flash Flood Warnings in Nebraska, 2010 Every flash flood warning in 2010

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.