Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 8, NWS North Platte, NE

April 26, 1991Cedar County, Knox County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Apr 26, 1991, 5:27 PM CDT for Cedar County, Knox County, Nebraska. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1991, 5:27 PM CDT (22:27 UTC)
Expired
Apr 26, 1991, 6:30 PM CDT
In force
63 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Cedar County, NE, Knox County, NE

The nearest sounding before it

Omaha, NE (KOVN), launched 12:00Z, 10.5 hours before the alert went out and 175 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 12:00Z on 1991-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 21 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, Omaha, NE at 12:00Z on 1991-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 531 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
21 J/kg
Mixed-layer CIN
-435 J/kg
Mixed-layer LCL
562 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
531 m²/s²
0-3 km storm-relative helicity
672 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.7

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 North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 1:20 PM CDTSevere Thunderstorm WarningLBFKeya Paha30 min
Apr 26, 3:49 PM CDTSevere Thunderstorm WarningLBFGarfield, Loup26 min
Apr 26, 4:40 PM CDTSevere Thunderstorm WarningLBFHolt40 min
Apr 26, 5:13 PM CDTSevere Thunderstorm WarningLBFBoyd27 min
Apr 26, 6:12 PM CDTSevere Thunderstorm WarningLBFMadison48 min
Apr 26, 6:12 PM CDTSevere Thunderstorm WarningLBFCedar, Knox, Pierce48 min
Apr 26, 6:16 PM CDTTornado WarningLBFKnox, Pierce29 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991Every severe thunderstorm warning in 1991

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.