Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 117, NWS North Platte, NE

September 18, 1986Cherry County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Sep 18, 1986, 6:00 AM MDT for Cherry County, Nebraska. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Sep 18, 1986, 6:00 AM MDT (12:00 UTC)
Expired
Sep 18, 1986, 7:00 AM MDT
In force
60 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Cherry 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, 0.0 hours before the alert went out and 163 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 1986-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1232 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 1986-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 196 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
1232 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
579 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
196 m²/s²
0-3 km storm-relative helicity
373 m²/s²
Significant tornado parameter
1.6
Supercell composite
7.4

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
Sep 18, 5:01 AM MDTSevere Thunderstorm WarningLBFCherry59 min
Sep 18, 6:58 AM MDTSevere Thunderstorm WarningLBFBrown62 min
Sep 18, 7:05 AM MDTSevere Thunderstorm WarningLBFCherry25 min
Sep 18, 7:30 AM MDTSevere Thunderstorm WarningLBFCherry2 hr
Sep 18, 8:01 AM MDTSevere Thunderstorm WarningLBFBrown, Rock59 min
Sep 18, 1:38 PM MDTSevere Thunderstorm WarningLBFBoone42 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.