Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 182, NWS Omaha, NE

June 29, 2023Johnson County, Nemaha County, Otoe County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 29, 2023, 5:36 AM CDT for Johnson County, Nemaha County, Otoe County, Nebraska. It was in force for 23 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
Jun 29, 2023, 5:36 AM CDT (10:36 UTC)
Expired
Jun 29, 2023, 5:59 AM CDT
In force
23 min
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Johnson County, NE, Nemaha County, NE, Otoe County, NE

The radar

The Omaha radar (KOAX), 97 km from the middle of the area, began a volume at 10:38 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 29, 1:26 AM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 10.6 hours before the alert went out and 387 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2023-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1288 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2023-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1288 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
2112 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 4:27 AM CDTSevere Thunderstorm WarningOAXGage, Jefferson, Saline33 min
Jun 29, 4:56 AM CDTSevere Thunderstorm Warning Considerable damage threatOAXGage, Jefferson34 min
Jun 29, 5:06 AM CDTSevere Thunderstorm WarningOAXNemaha12 min
Jun 29, 5:08 AM CDTSevere Thunderstorm WarningOAXGage, Johnson, Pawnee37 min
Jun 29, 5:23 AM CDTSevere Thunderstorm Warning Considerable damage threatOAXGage, Jefferson, Johnson, Pawnee22 min
Jun 29, 5:42 AM CDTSevere Thunderstorm WarningOAXGage, Johnson, Nemaha, Pawnee, Richardson33 min
Jun 29, 6:10 AM CDTSevere Thunderstorm Warning Considerable damage threatOAXJohnson, Nemaha, Pawnee, Richardson50 min
Jun 29, 6:58 AM CDTSevere Thunderstorm WarningOAXNemaha, Richardson17 min
Jun 29, 7:29 AM CDTSevere Thunderstorm WarningOAXCass, Douglas, Otoe, Sarpy, Washington31 min
Jun 29, 7:45 AM CDTSevere Thunderstorm WarningOAXOtoe15 min
Jun 29, 7:51 AM CDTSevere Thunderstorm WarningOAXFremont, Harrison, Mills, Montgomery, Page, Pottawattamie39 min
Jun 29, 8:25 AM CDTSevere Thunderstorm WarningOAXMills, Montgomery, Page, Pottawattamie20 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2023Every severe thunderstorm warning in 2023

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.