Alert archive / Nebraska / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 18, NWS Omaha, NE

March 23, 2017Antelope County, Pierce County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Mar 23, 2017, 10:00 PM CDT for Antelope County, Pierce County, Nebraska. It was in force for 30 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: Mar 23, 2017, 10:00 PM CDT (03:00 UTC)
Expired: Mar 23, 2017, 10:30 PM CDT
In force: 30 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Antelope County, NE, Pierce County, NE

The radar

The Omaha radar (KOAX), 158 km from the middle of the area, began a volume at 03:01 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, 3.0 hours before the alert went out and 157 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: 5 J/kg
Mixed-layer CIN: -513 J/kg
Mixed-layer LCL: 1741 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 224 m²/s²
0-3 km storm-relative helicity: 328 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 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 Mar 23, 6:56 PM CDT, 3 hours 4 minutes earlier.

Area forecast discussion, Mar 23, 6:56 PM CDT, 3 hours 4 minutes before

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Hazardous weather outlook, Mar 23, 5:08 PM CDT, 4 hours 52 minutes before

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In the hours before

Local storm report, Mar 23, 5:43 PM CDT, 4 hours 17 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
Mar 23, 9:15 PM CDT	Special Weather Statement	OAX	Antelope, Pierce	45 min
Mar 23, 10:25 PM CDT	Special Weather Statement	OAX	Cedar	50 min
Mar 23, 10:37 PM CDT	Special Weather Statement	OAX	Douglas, Sarpy	38 min
Mar 23, 11:21 PM CDT	Special Weather Statement	OAX	Boone, Madison	24 min
Mar 23, 11:51 PM CDT	Special Weather Statement	OAX	Madison, Stanton	24 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2017 Every severe thunderstorm warning 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.