Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 56, NWS North Platte, NE

June 29, 1993Boyd County, Rock County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 29, 1993, 5:46 PM CDT for Boyd County, Rock County, Nebraska. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1993, 5:46 PM CDT (22:46 UTC)
Expired
Jun 29, 1993, 6:38 PM CDT
In force
52 min
Issued by
NWS North Platte, NE
Area
Whole counties

Counties Boyd County, NE, Rock County, NE

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 10.8 hours before the alert went out and 255 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, Aberdeen, SD at 12:00Z on 1993-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 145 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, Aberdeen, SD at 12:00Z on 1993-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 237 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
145 J/kg
Mixed-layer CIN
-368 J/kg
Mixed-layer LCL
812 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
237 m²/s²
0-3 km storm-relative helicity
291 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

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, 6:16 PM CDTSevere Thunderstorm WarningLBFCuster23 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.