Alert archive / Nebraska / Special Weather Statements in 2017

Special Weather Statement, NWS Omaha, NE

August 25, 20177 counties in Nebraska

NWS Omaha, NE issued this special weather statement at Aug 25, 2017, 4:21 AM CDT for 7 counties in Nebraska. It was in force for 84 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 25, 2017, 4:21 AM CDT (09:21 UTC)
Expired: Aug 25, 2017, 5:45 AM CDT
In force: 84 min
Issued by: NWS Omaha, NE

Counties Burt County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Saunders County, NE, Thurston County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 65 km from the middle of the area, began a volume at 09:22 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, 9.4 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: 6 J/kg
Mixed-layer CIN: -329 J/kg
Mixed-layer LCL: 1522 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 224 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 25, 3:12 AM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Aug 25, 3:12 AM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, Aug 25, 4:00 AM CDT, 21 minutes before

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In the hours before

Special weather statement, Aug 24, 10:31 PM CDT, 5 hours 50 minutes before

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Special weather statement, Aug 24, 11:18 PM CDT, 5 hours 3 minutes before

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Special weather statement, Aug 25, 1:31 AM CDT, 2 hours 50 minutes before

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Special weather statement, Aug 25, 2:39 AM CDT, 1 hour 42 minutes before

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Special weather statement, Aug 25, 4:21 AM CDT, 0 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
Aug 24, 10:31 PM CDT	Special Weather Statement	OAX	Thurston	29 min
Aug 24, 11:18 PM CDT	Special Weather Statement	OAX	Burt	42 min
Aug 25, 1:31 AM CDT	Special Weather Statement	OAX	Burt, Cuming	59 min
Aug 25, 1:40 AM CDT	Areal Flood Advisory	OAX	Burt	3 hr
Aug 25, 2:39 AM CDT	Special Weather Statement	OAX	Burt, Colfax, Cuming, Dodge, Madison, Platte and 3 more	81 min
Aug 25, 9:44 AM CDT	Special Weather Statement	OAX	Wayne	31 min
Aug 25, 11:57 AM CDT	Flash Flood Warning	OAX	Cedar, Wayne	3 hr

Nearby

Special Weather Statements in Nebraska, 2017 Every special weather statement in 2017

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.