Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 51, NWS North Platte, NE

June 29, 1986Keya Paha County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 29, 1986, 3:14 PM CDT for Keya Paha County, Nebraska. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1986, 3:14 PM CDT (20:14 UTC)
Expired
Jun 29, 1986, 3:40 PM CDT
In force
26 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Keya Paha County, NE

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 8.2 hours before the alert went out and 208 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 12:00Z on 1986-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1397 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 12:00Z on 1986-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 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
1397 J/kg
Mixed-layer CIN
-247 J/kg
Mixed-layer LCL
1513 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 28, 9:17 PM CDTTornado WarningLBFKnox23 min
Jun 28, 9:48 PM CDTTornado WarningLBFCedar, Knox32 min
Jun 29, 12:06 AM CDTSevere Thunderstorm WarningLBFCherry54 min
Jun 29, 3:44 PM CDTSevere Thunderstorm WarningLBFBoyd, Keya Paha56 min
Jun 29, 4:21 PM CDTSevere Thunderstorm WarningLBFHolt, Rock59 min
Jun 29, 5:25 PM CDTSevere Thunderstorm WarningLBFHolt, Rock50 min
Jun 29, 5:47 PM CDTSevere Thunderstorm WarningLBFCedar43 min
Jun 29, 6:23 PM CDTSevere Thunderstorm WarningLBFAntelope, Knox52 min
Jun 29, 6:23 PM CDTSevere Thunderstorm WarningLBFGarfield, Wheeler52 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1986Every severe thunderstorm warning in 1986

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.