Alert archive / Nebraska / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 86, NWS Omaha, NE

July 21, 1995Knox County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jul 21, 1995, 8:14 PM CDT for Knox County, Nebraska. It was in force for 46 min.

The area

The counties it named.

The facts

Issued
Jul 21, 1995, 8:14 PM CDT (01:14 UTC)
Expired
Jul 21, 1995, 9:00 PM CDT
In force
46 min
Issued by
NWS Omaha, NE
Area
Whole counties

County Knox County, NE

The radar

The Sioux Falls radar (KFSD), 142 km from the middle of the area, began a volume at 01:14 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, 1.2 hours before the alert went out and 193 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, Omaha, NE at 00:00Z on 1995-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2611 joules per kilogram.LCLEL10008507005003002001001 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, Omaha, NE at 00:00Z on 1995-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
2611 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1488 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
103 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.6

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 7:28 PM CDTSevere Thunderstorm WarningOAXCedar, Knox47 min
Jul 21, 8:25 PM CDTSevere Thunderstorm WarningOAXCedar50 min
Jul 21, 9:30 PM CDTSevere Thunderstorm WarningOAXAntelope45 min
Jul 21, 10:03 PM CDTSevere Thunderstorm WarningOAXPierce42 min
Jul 21, 10:17 PM CDTSevere Thunderstorm WarningOAXMadison58 min
Jul 21, 10:28 PM CDTTornado WarningOAXMadison32 min
Jul 21, 10:59 PM CDTSevere Thunderstorm WarningOAXMadison, Stanton46 min
Jul 22, 12:44 AM CDTSevere Thunderstorm WarningOAXButler31 min
Jul 22, 2:15 AM CDTSevere Thunderstorm WarningOAXGage, Johnson45 min
Jul 22, 1:44 AM CDTSevere Thunderstorm WarningOAXHarrison, Pottawattamie31 min
Jul 22, 2:17 AM CDTSevere Thunderstorm WarningOAXPottawattamie43 min
Jul 22, 2:31 AM CDTSevere Thunderstorm WarningOAXShelby29 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1995Every severe thunderstorm warning in 1995

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.