Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 40, NWS Cheyenne, WY

June 29, 1986Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 29, 1986, 10:24 PM MDT for Dawes County, Sioux County, Nebraska. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Jun 29, 1986, 10:24 PM MDT (04:24 UTC)
Expired
Jun 29, 1986, 11:15 PM MDT
In force
51 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Dawes County, NE, Sioux 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

Rapid City, SD (KRAP), launched 00:00Z, 4.4 hours before the alert went out and 169 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, Rapid City, SD at 00:00Z on 1986-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2168 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, Rapid City, SD at 00:00Z on 1986-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -66 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
2168 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1204 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-66 m²/s²
0-3 km storm-relative helicity
-30 m²/s²
Significant tornado parameter
-0.7
Supercell composite
-8.2

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.

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 29, 7:54 PM MDT, 2 hours 30 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
748 PM MDT SUN JUN 29 1986

...SEVERE THUNDERSTORM WARNING EXPIRES FOR GOSHEN COUNTY
IN SOUTHEAST WYOMING...

THE SEVERE THUNDERSTORM WARNING FOR GOSHEN COUNTY HAS EXPIRED.
SCATTERED THUNDERSTORMS CONTINUE IN GOSHEN COUNTY..BUT THE INTENSITY
OF THE STORMS HAS DIMINISHED. NO SEVERE WEATHER WAS REPORTED WITH
THESE STORMS. SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE
EARLY TONIGHT. RESIDENTS CAN STILL EXPECT BRIEF HEAVY RAIN..POSSIBLE
GUSTY WINDS AND SMALL HAIL WITH THESE THUNDERSTORMS.

RIZZO
Special weather statement, Jun 29, 8:30 PM MDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
815 PM MDT SUN JUN 29 1986

...A SEVERE THUNDERSTORM WARNING CONTINUES FOR NORTHERN GOSHEN
COUNTY IN SOUTHEAST WYOMING UNTIL 830 PM..

AT 805 PM MDT RADAR INDICATED A STRONG THUNDERSTORM  IN CENTRAL
GOSHEN COUNTY IN SOUTHEAST WYOMING. THE STORM WAS CENTERED OVER
AN AREA JUST EAST OF GUERNSEY WYOMING THROUGH TORRINGTON WYOMING.
THE STORM WAS MOVING SLOWLY NORTHEAST AT AROUND 10 MILES AN HOUR.

ALTHOUGH NO SEVERE WEATHER HAS BEEN REPORTED WITH THIS STORM YET..
THEY ARE CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WEATHER.
RESIDENTS SHOULD BE PREPARED TO TAKE COVER WHEN THREATENING WEATHER
APPROACHES.

MICKELSON
Special weather statement, Jun 29, 8:51 PM MDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
850 PM MDT SUN JUN 29 1986

...SEVERE THUNDERSTORM WATCH NUMBER 318 IS CANCELLED FOR
SHERIDAN...JOHNSON..AND CONVERSE COUNTIES...

...SEVERE THUNDERSTORM WATCH NUMBER 318 CONTINUES UNTIL 10 PM FOR
CAMPBELL...CROOK...WESTON AND NIOBRARA COUNTIES IN NORTHEAST WYOMING..

AT 850 PM THE POTENTIAL FOR SEVERE THUNDERSTORMS IS CONCENTRATED IN
EXTREME NORTHEAST WYOMING...THEREFORE THE SEVERE THUNDERSTORM WATCH
HAS BEEN CANCELLED FOR THE WESTERN PORTION OF THE SEVERE THUNDERSTORM
WATCH IN WYOMING.

RIZZO
Special weather statement, Jun 29, 9:27 PM MDT, 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
925 PM MDT SUN JUN 29 1986

...SEVERE THUNDERSTORM WATCH NUMBER 318 FOR NORTHEAST WYOMING
   HAS BEEN CANCELLED...

THUNDERSTORM ACTIVITY WAS BEGINNING TO DECREASE IN INTENSITY IN WYOMING.
HOWEVER...AT 920 PM RADAR INDICATED A STRONG THUNDERSTORM IN NORTH
CENTRAL GOSHEN COUNTY ABOUT 55 MILES NORTHWEST OF SCOTTSBLUFF NEBRASKA.
THIS STORM WAS MOVING TO THE NORTHEAST AT 20 MILES AN HOUR.

RESIDENTS OF NORTHERN GOSHEN COUNTY SHOULD BE WATCHFUL AS THIS STORM
MOVES TO THE EAST.  SMALL HAIL...STRONG GUSTY WINDS...AND DANGEROUS
LIGHTNING ARE ALL POSSIBLE.  IF ANY SEVERE WEATHER IS SPOTTED...TAKE
COVER...AND WHEN SAFE NOTIFY YOUR C5OUNTY SHERIFF.
GLANCY
Local storm report, Jun 29, 9:51 PM MDT, 33 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
945 PM MDT SUN JUNE 30 1985

ALL TIMES MOUNTAIN DAYLIGHT TIME..

858 PM... PATROL CAR DRIVING BACK FROM 25 MILES NORTH OF TORRINGTON
          IN GOSHENA COUNTY IN SOUTHEAST WY..BROUGHT BACK EGG AND
          BASEBALL SIZE HAIL TO TORRINGTION PD OFFICE ...APPROXIMATE
          TIME OF OCCURANCE 815 TO 830 PM MDT

RIZZO
Special weather statement, Jun 29, 10:17 PM MDT, 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
1015PM MDT SUN JUN 29 1986

...SEVERE THUNDERSTORM WARNING CANCELLED FOR NORTHERN NEBRASKA
   PANHANDLE...

THE SEVERE THUNDERSTORM WARNING ISSUED AT 920 PM MDT FOR NORTHERN
SIOUX...WESTERN DAWES...AND NORTHWEST BOX BUTTE COUNTIES IN THE
NORTHERN NEBRASKA PANHANDLE HAS BEEN CANCELLED.

THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED GREATLY
AND ARE NO LONGER A THREAT TO THE AREA.

AT 1010 PM MDT...RADAR INDICATES A STRONG THUNDERSTORM 8 MILES WEST
OF HARRISON NEBRASKA ALONG THE NEBRASKA/WYOMING STATELINE MOVING
NORTHEAST AT 20 MILES AN HOUR. HEAVY RAIN AND HAIL ARE POSSIBLE WITH
THIS STORM AS IT MOVES NORTH OF HARRISON TOWARDS THE SOUTH DAKOTA LINE.
PFEIFFER

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 8:21 PM MDTSevere Thunderstorm WarningCYSSioux54 min
Jun 29, 8:34 PM MDTTornado WarningCYSSioux26 min
Jun 29, 8:58 PM MDTTornado WarningCYSSioux32 min
Jun 29, 9:26 PM MDTSevere Thunderstorm WarningCYSBox Butte, Dawes, Sioux54 min
Jun 30, 4:31 AM MDTSevere Thunderstorm WarningCYSDawes59 min
Jun 30, 5:28 AM MDTSevere Thunderstorm WarningCYSSheridan57 min
Jun 30, 4:44 PM MDTSevere Thunderstorm WarningCYSSioux51 min
Jun 30, 5:10 PM MDTSevere Thunderstorm WarningCYSDawes, Sheridan55 min
Jun 29, 7:15 PM MDTSevere Thunderstorm WarningCYSGoshen30 min
Jun 29, 8:06 PM MDTSevere Thunderstorm WarningCYSGoshen24 min
Jun 30, 12:01 AM MDTSevere Thunderstorm WarningCYSWeston44 min
Jun 30, 12:50 AM MDTSevere Thunderstorm WarningCYSWeston40 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.