Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 57, NWS North Platte, NE

June 29, 1993Custer County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 29, 1993, 6:16 PM CDT for Custer County, Nebraska. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1993, 6:16 PM CDT (23:16 UTC)
Expired
Jun 29, 1993, 6:39 PM CDT
In force
23 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Custer County, NE

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.3 hours before the alert went out and 280 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 1993-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 515 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 1993-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 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
515 J/kg
Mixed-layer CIN
-378 J/kg
Mixed-layer LCL
1356 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

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 North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 5:10 PM CDTSevere Thunderstorm WarningLBFKeya Paha35 min
Jun 29, 5:46 PM CDTSevere Thunderstorm WarningLBFHolt59 min
Jun 29, 5:46 PM CDTSevere Thunderstorm WarningLBFBoyd, Rock52 min
Jun 29, 6:32 PM CDTSevere Thunderstorm WarningLBFBoyd, Holt58 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1993Every severe thunderstorm warning in 1993

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.