Alert archive / Nebraska / Tornado Warnings in 1991

Tornado Warning 13, NWS North Platte, NE

May 29, 1991Colfax County, Nebraska

NWS North Platte, NE issued this tornado warning at May 29, 1991, 10:57 PM CDT for Colfax County, Nebraska. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
May 29, 1991, 10:57 PM CDT (03:57 UTC)
Expired
May 29, 1991, 11:30 PM CDT
In force
33 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Colfax County, NE

The nearest sounding before it

Omaha, NE (KOVN), launched 00:00Z, 4.0 hours before the alert went out and 66 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 00:00Z on 1991-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 549 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 00:00Z on 1991-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
549 J/kg
Mixed-layer CIN
-117 J/kg
Mixed-layer LCL
1066 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KOFK 300357
TOROFK
NEC037-300430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED 
TORNADO WARNING 
NATIONAL WEATHER SERVICE NORFOLK NE
1057 PM CDT WED MAY 29 1991

THE NATIONAL WEATHER SERVICE HAS ISS

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 10:39 PM CDTSevere Thunderstorm WarningLBFColfax36 min
May 29, 11:19 PM CDTTornado WarningLBFPlatte26 min
May 29, 11:54 PM CDTTornado WarningLBFCuming, Stanton51 min

Nearby

Tornado Warnings in Nebraska, 1991Every tornado warning in 1991Tornadoes 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.