Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 39, NWS North Platte, NE

June 1, 1991Thomas County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Jun 1, 1991, 9:39 AM CDT for Thomas County, Nebraska. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
Jun 1, 1991, 9:39 AM CDT (14:39 UTC)
Expired
Jun 1, 1991, 10:15 AM CDT
In force
36 min
Issued by
NWS North Platte, NE
Area
Whole counties

County Thomas County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 2.7 hours before the alert went out and 87 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 1991-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2738 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 1991-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
2738 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
1.3
Supercell composite
5.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KLBF 011439
SVRLBF
NEC171-011515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE NORTH PLATTE NE
939 AM CDT SAT JUN 1 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1015 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE NORTH CENTRAL PART OF NEBRASKA
      THOMAS

AT 931 AM CDT ... RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES
SOUTH OF THEDFORD...OR 40 MILES NORTH OF NORTH PLATTE.  THE STORM
WAS MOVING NORTH AT 35 MPH.  THEDFORD AND HALSEY FOREST ARE IN
THE PATH OF THIS STORM.

IF YOU ARE IN THE AREA THREATENED BY THE STORM...GO TO A REINFORCED
SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY
HEAVY RAIN...AND DEADLY LIGHTNING.

REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A
TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT!!

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
LARGE HAIL GREATER THAN 3/4 INCH IN DIAMETER...DEADLY LIGHTNING
AND VERY HEAVY RAIN THAT CAN FLOOD A LOW LYING AREA QUICKLY.

 RC

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 1, 6:29 AM CDT, 3 hours 10 minutes before
NEZ016-011230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
525 AM CDT SAT JUN 1 1991

...THUNDERSTORMS WITH DAMAGING WINDS MOVING INTO SOUTHWEST NEBRASKA...

AT 52O AM MDT...RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY
RAIN...GUSTY WINDS AND SMALL HAIL IN NORTHERN KANSAS 10 MILES SOUTH OF
BENKELMAN...OR 80 MILES SOUTHWEST OF NORTH PLATTE.  WINDS TO 75 MPH
WERE REPORTED WITH THIS STORM AS IT MOVED THROUGH THE GOODLAND KANSAS
AREA.  THE STORM WAS MOVING NORTH AT 40 MPH.

PERSONS IN DUNDY AND WESTERN HITCHCOCK COUNTIES SHOULD BE PREPARED TO
MOVE TO A PLACE OF SHELTER AS THIS STORM APPROACHES AS IT IS CAPABLE
OF PRODUCING DAMAGING WINDS.  THE STORM SHOULD BE IN THE BENKELMxAN
AREA AROUND 545 AM MDT.

WALAWENDER
Special weather statement, Jun 1, 6:31 AM CDT, 3 hours 8 minutes before
NEZ016-011230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
525 AM MDT SAT JUN 1 1991

...THUNDERSTORMS WITH DAMAGING WINDS MOVING INTO SOUTHWEST NEBRASKA...

AT 52O AM MDT...RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY
RAIN...GUSTY WINDS AND SMALL HAIL IN NORTHERN KANSAS 10 MILES SOUTH OF
BENKELMAN...OR 80 MILES SOUTHWEST OF NORTH PLATTE.  WINDS TO 75 MPH
WERE REPORTED WITH THIS STORM AS IT MOVED THROUGH THE GOODLAND KANSAS
AREA.  THE STORM WAS MOVING NORTH AT 40 MPH.

PERSONS IN DUNDY AND WESTERN HITCHCOCK COUNTIES SHOULD BE PREPARED TO
MOVE TO A PLACE OF SHELTER AS THIS STORM APPROACHES AS IT IS CAPABLE
OF PRODUCING DAMAGING WINDS.  THE STORM SHOULD BE IN THE BENKELMAN
AREA AROUND 545 AM MDT.

WALAWENDER

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 10:02 PM CDTSevere Thunderstorm WarningLBFAntelope, Holt, Knox58 min
May 31, 11:08 PM CDTSevere Thunderstorm WarningLBFAntelope, Knox, Pierce67 min
Jun 1, 6:59 AM CDTSevere Thunderstorm WarningLBFHayes61 min
Jun 1, 7:36 AM CDTSevere Thunderstorm WarningLBFLincoln69 min
Jun 1, 8:14 AM CDTSevere Thunderstorm WarningLBFKeith31 min
Jun 1, 8:43 AM CDTSevere Thunderstorm WarningLBFLincoln, Logan, McPherson62 min
Jun 1, 10:59 AM CDTSevere Thunderstorm WarningLBFCuster61 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991Every severe thunderstorm warning 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.