Alert archive / Nebraska / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 112, NWS Omaha, NE

July 3, 2019Douglas County, Washington County, Nebraska; Pottawattamie County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Jul 3, 2019, 7:32 PM CDT for Douglas County, Washington County, Nebraska; Pottawattamie County, Iowa. It was in force for 28 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 3, 2019, 7:32 PM CDT (00:32 UTC)
Expired: Jul 3, 2019, 8:00 PM CDT
In force: 28 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Pottawattamie County, IA, Douglas County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 34 km from the middle of the area, began a volume at 00:33 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, 0.5 hours before the alert went out and 34 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: 2568 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1452 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 28 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 Jul 3, 3:08 PM CDT, 4 hours 24 minutes earlier.

Area forecast discussion, Jul 3, 3:08 PM CDT, 4 hours 24 minutes before

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Hazardous weather outlook, Jul 3, 4:00 PM CDT, 3 hours 32 minutes before

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In the hours before

Special weather statement, Jul 3, 2:00 PM CDT, 5 hours 32 minutes before

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Local storm report, Jul 3, 3:33 PM CDT, 3 hours 59 minutes before

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Local storm report, Jul 3, 3:36 PM CDT, 3 hours 56 minutes before

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Special weather statement, Jul 3, 7:06 PM CDT, 26 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 3, 7:06 PM CDT	Special Weather Statement	OAX	Douglas	24 min
Jul 3, 7:52 PM CDT	Special Weather Statement	OAX	Sarpy	23 min
Jul 3, 8:18 PM CDT	Special Weather Statement	OAX	Sarpy	27 min
Jul 3, 9:15 PM CDT	Special Weather Statement	OAX	Saunders	30 min
Jul 3, 8:32 PM CDT	Special Weather Statement	OAX	Pottawattamie	28 min
Jul 3, 9:39 PM CDT	Special Weather Statement	OAX	Mills	36 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2019 Severe Thunderstorm Warnings in Iowa, 2019 Every severe thunderstorm warning in 2019

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.