Alert archive / Nebraska / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 394, NWS Omaha, NE

July 20, 2008Burt County, Cuming County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 20, 2008, 11:35 AM CDT for Burt County, Cuming County, Nebraska. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 20, 2008, 11:35 AM CDT (16:35 UTC)
Expired: Jul 20, 2008, 12:15 PM CDT
In force: 40 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

Counties Burt County, NE, Cuming County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 4.6 hours before the alert went out and 65 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: 3469 J/kg
Mixed-layer CIN: -132 J/kg
Mixed-layer LCL: 922 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 94 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 20, 6:53 AM CDT, 4 hours 42 minutes earlier.

Area forecast discussion, Jul 20, 6:53 AM CDT, 4 hours 42 minutes before

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Hazardous weather outlook, Jul 20, 11:31 AM CDT, 4 minutes before

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In the hours before

Local storm report, Jul 20, 10:04 AM CDT, 1 hour 31 minutes before

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Local storm report, Jul 20, 10:29 AM CDT, 1 hour 6 minutes before

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Local storm report, Jul 20, 10:34 AM CDT, 1 hour 1 minute before

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Local storm report, Jul 20, 11:05 AM CDT, 30 minutes before

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Local storm report, Jul 20, 11:12 AM CDT, 23 minutes before

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Local storm report, Jul 20, 11:32 AM CDT, 3 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
Jul 19, 8:35 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Thurston	40 min
Jul 20, 8:35 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Platte, Saunders	40 min
Jul 20, 9:22 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Saunders	38 min
Jul 20, 9:25 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte	50 min
Jul 20, 9:56 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Saunders	33 min
Jul 20, 10:11 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte, Stanton	38 min
Jul 20, 10:37 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Saunders	38 min
Jul 20, 11:11 AM CDT	Severe Thunderstorm Warning	OAX	Colfax, Cuming, Dodge	49 min
Jul 19, 7:36 PM CDT	Severe Thunderstorm Warning	OAX	Monona	39 min
Jul 19, 8:55 PM CDT	Tornado Warning	OAX	Harrison, Shelby	35 min
Jul 19, 10:19 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie, Shelby	41 min
Jul 20, 1:45 PM CDT	Severe Thunderstorm Warning	OAX	Monona	45 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2008 Every severe thunderstorm warning in 2008

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.