Alert archive / Nebraska / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 72, NWS Cheyenne, WY

August 3, 1986Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 3, 1986, 6:06 PM MDT for Sioux County, Nebraska. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Aug 3, 1986, 6:06 PM MDT (00:06 UTC)
Expired
Aug 3, 1986, 7:05 PM MDT
In force
59 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County 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, 0.1 hours before the alert went out and 190 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 1986-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1228 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 1986-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -43 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
1228 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1957 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-43 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 040006
SVRBFF
NEC165-040105-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
606 PM MDT SUN AUG 3 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 705 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

PANHANDLE OF NEBRASKA...SOUTHERN SIOUX

AT 604 PM MDT..RADAR INDICATED A SEVERE THUNDERSTORM 35 MILES
NORTHWEST OF SCOTTSBLUFF NEBRASKA MOVING TO THE SOUTHEAST AT 20
MILES AN HOUR. THIS THUNDERSTORM WAS BEGINING TO ENTER WESTERN
SIOUX COUNTY OF THE NORTHWEST NEBRASKA PANHANDLE.

REMEMBER A SEVERE THUNDERSTORM CAN PRODUCE DAMAGING WINDS IN EXCESS
OF 60 MPH..LARGE HAIL..DEADLY LIGHTNING AND VERY HEAVY RAIN THAT
CAN QUICKLY FLOOD LOW LYING AREAS.

THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE
TO A PLACE OF SAFETY IF ONE IS SPOTTED.

HONTON

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, Aug 3, 1:48 PM MDT, 4 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
145 PM MDT SUN AUG 3 1986

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF EASTERN WYOMING
UNTIL 9 PM MDT THIS SUNDAY EVENING. TOWNS INCLUDED IN THIS WATCH ARE
CHEYENNE...WHEATLAND...TORRINGTON....LUSK...AND NEWCASTLE.

AT 130 PM THIS AFTERNOON...WEATHER RADAR INDICATED THAT THUNDERSHOWERS
HAD ALREADY BEGUN TO DEVELOP OVER THE SOUTHEAST CORNER OF WYOMING.
THESE SHOWERS WERE MOVING TOWARD THE SOUTHEAST AT 25 MILES PER HOUR.

MOIST UPSLOPE LOW LEVEL FLOW COMBINED WITH SURFACE HEATING WILL
CONTINUE TO TRIGGER THUNDERSHOWERS THROUGH THIS AFTERNOON AND EVENING.
SOME OF THESE THUNDERSHOWERS WILL CONTAIN LARGE HAIL...DAMAGING WINDS...
AND BRIEF HEAVY RAIN. REMEMBER...LIGHTNING ALSO IS VERY DANGEROUS.

IF YOU SEE THREATENING WEATHER...SEEK SHELTER IMMEDIATELY. PLEASE INFORM
YOUR LOCAL LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE OF ANY
SEVERE WEATHER AFTER THE DANGER HAS PASSED.

MENTZER
Special weather statement, Aug 3, 2:34 PM MDT, 3 hours 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
230 PM MDT SUN AUG 3 1986

...SEVERE THUNDERSTORMS WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE
NEBRASKA PANHANDLE...

AT 230 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 45 MILES
NORTHWEST OF CHADRON NEBRASKA...NEAR HOT SPRINGS SOUTH DAKOTA...MOVING
SOUTHEAST AT 25 MILES AN HOUR.

THIS STORM WILL MOVE INTO THE NORTHERN PORTIONS OF DAWES AND SHERIDAN
COUNTIES OF THE PANHANDLE AROUND 4PM MDT THIS AFTERNOON.

LOCALLY HEAVY RAIN..STRONG GUSTY WIND AND HAIL ARE POSSIBLE WITH
THIS THUNDERSTORM.

THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF
THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING.
PFEIFFER
Special weather statement, Aug 3, 3:44 PM MDT, 2 hours 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
343 PM MDT SUN AUG 3 1986

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE
NEBRASKA PANHANDLE...

AT 340 PM MDT...RADAR INDICATED THUNDERSTORMS DEVELOPING ALONG THE
FRONT RANGE OF THE ROCKIES...FROM NEAR FORT COLLINS COLORADO NORTHWARD
TO EAST OF CASPER AND NEAR NEWCASTLE WYOMING. THESE STORMS WERE MOVING
SLOWLY SOUTHEAST AT 10 TO 15 MILES AN HOUR AND ARE NOT EXPECTED TO
ENTER THE NEBRASKA PANHANDLE UNTIL AFTER 5PM MDT THIS AFTERNOON.

ISOLATED THUNDERSHOWERS IN THE SOUTHERN BLACK HILLS NEAR HOT SPRINGS
SOUTH DAKOTA WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR.

THE SEVERE THUNDERSTORM WATCH NUMBER n463 REMAINS IN EFFECT FOR ALL OF
THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING.
PFEIFFER
Special weather statement, Aug 3, 4:40 PM MDT, 1 hour 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
440 PM MDT SUN AUG 3 1986

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE
NEBRASKA PANHANDLE...

AT 435 PM MDT...THUNDERSTORMS CONTINUED TO DEVELOP ALONG THE FRONT
RANGE OF THE ROCKIES...FROM EAST OF FORT COLLINS COLORADO NORTHWARD TO
DOUGLAS AND NEAR NEWCASTLE WYOMING. THESE STORMS WERE MOVING SLOWLY
SOUTHEAST AT 15 TO 20 MILES AN HOUR AND ARE NOT EXPECTED TO ENTER THE
NEBRASKA PANHANDLE UNTIL AFTER 6PM MDT THIS AFTERNOON.

ISOLATED THUNDERSHOWERS IN THE BLACK HILLS NEAR RAPID CITY SOUTH DAKOTA
WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. OTHER THUNDERSHOWERS WERE
DEVELOPING ALONG THE PINE RIDGE IN THE NEBRASKA PANHANDLE NEAR CRAWFORD.

THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF
THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING.
PFEIFFER
Special weather statement, Aug 3, 5:45 PM MDT, 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
545 PM MDT SUN AUG 3 1986

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE
NEBRASKA PANHANDLE...

AT 440 PM MDT...THUNDERSTORMS CONTINUED IN EASTERN WYOMING BETWEEN
CHEYENNE AND LARAMIE NORTHWARD TO NEAR DOUGLAS AND LUSK WYOMING. THESE
STORMS WERE MOVING SOUTHEAST AROUND 20 MILES AN HOUR AND WERE EXPECTED
TO ENTER THE NEBRASKA PANHANDLE AFTER 6PM MDT THIS EVENING.

ISOLATED THUNDERSHOWERS IN SOUTHWESTERN SOUTH DAKOTA EAST OF RAPID CITY
WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. OTHER THUNDERSHOWERS WERE
IN THE NORTHWESTERN PANHANDLE ALONG THE PINE RIDGE WEST OF CRAWFORD.

THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF
THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING.
PFEIFFER
Special weather statement, Aug 3, 5:47 PM MDT, 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
545 PM MDT SUN AUG 3 1986

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9PM MDT FOR ENTIRE
NEBRASKA PANHANDLE...

AT 540 PM MDT...THUNDERSTORMS CONTINUED IN EASTERN WYOMING BETWEEN
CHEYENNE AND LARAMIE NORTHWARD TO NEAR DOUGLAS AND LUSK WYOMING. THESE
STORMS WERE MOVING SOUTHEAST AROUND 20 MILES AN HOUR AND WERE EXPECTED
TO ENTER THE NEBRASKA PANHANDLE AFTER 6PM MDT THIS EVENING.

ISOLATED THUNDERSHOWERS IN SOUTHWESTERN SOUTH DAKOTA EAST OF RAPID CITY
WERE MOVING TO THE SOUTH AT 10 MILES AN HOUR. OTHER THUNDERSHOWERS WERE
IN THE NORTHWESTERN PANHANDLE ALONG THE PINE RIDGE WEST OF CRAWFORD.

THE SEVERE THUNDERSTORM WATCH NUMBER 463 REMAINS IN EFFECT FOR ALL OF
THE NEBRASKA PANHANDLE UNTIL 9PM MDT SUNDAY EVENING.
PFEIFFER

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 7:06 PM MDTSevere Thunderstorm WarningCYSCheyenne54 min
Aug 3, 7:06 PM MDTSevere Thunderstorm WarningCYSBox Butte, Scotts Bluff, Sioux54 min
Aug 3, 10:14 PM MDTSevere Thunderstorm WarningCYSSheridan26 min
Aug 4, 3:31 PM MDTSevere Thunderstorm WarningCYSSheridan39 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.