Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 74, NWS Cheyenne, WY

July 16, 1990Sheridan County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 16, 1990, 7:39 PM MDT for Sheridan County, Nebraska. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Jul 16, 1990, 7:39 PM MDT (01:39 UTC)
Expired
Jul 16, 1990, 8:20 PM MDT
In force
41 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Sheridan 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, 1.7 hours before the alert went out and 178 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 1990-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 474 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 1990-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -124 square meters per square second.1939Sfc1 km3 km6 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
474 J/kg
Mixed-layer CIN
-90 J/kg
Mixed-layer LCL
2876 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-124 m²/s²
0-3 km storm-relative helicity
-97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBFF 170139
SVRBFF
NEC161-170245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
739 PM MDT MON JUL 16 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 845 PM MDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE PANHANDLE OF NEBRASKA
      SHERIDAN

AT 735 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 28 MILES
EAST OF CHADRON NEBRASKA...NEAR THE TOWN OF RUSHVILLE NEBRASKA.
THE STORM WAS MOVING EAST AT 15 MILES AN HOUR.

AT 730 PM MDT...THE NEBRASKA STATE PATROL REPORTED A CITIZEN REPORT
OF 80 MILE AN HOUR WINDS NEAR RUSHVILLE NEBRASKA.

PREPARE FOR LARGE HAIL...DAMAGING WIND...HEAVY RAIN AND DANGEROUS
LIGHTNING BY TAKING COVER.  STAY AWAY FROM AREAS WHERE LOOSE ITEMS
CAN BECOME DANGEROUS FLYING DEBRIS.

IF THREATENING WEATHER APPROACHES...TAKE SHELTER INSIDE A REINFORCED
BUILDING.  STAY AWAY FROM WINDOWS.  A BASEMENT...INTERIOR HALLWAY...
OR A ROOM ON THE LOWEST FLOOR IS THE SAFEST PLACE IN MOST BUILDINGS.
MOTORISTS SHOULD AVOID LOW WATER CROSSINGS.

WIRTH

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, Jul 16, 2:50 PM MDT, 4 hours 49 minutes before
WYZ012-016-017-162200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
250 PM MDT MON JUL 16 1990

AT 240 PM MDT A STRONG THUNDERSTORM WAS OBSERVED ABOUT 15 MILES NORTH OF
CHEYENNE. HEAVY RAIN...GUSTY WINDS AND HAIL WERE LIKELY WITH THIS STORM.
OTHER THUNDERSTORMS WERE WIDELY SCATTERED OVER SOUTHEAST WYOMING...
ESPECIALLY IN LARAMIE AND PLATTE COUNTIES.  THE STORMS WERE MOVING
SOUTHEAST AT 10 TO 15 MPH.

SCATTERED THUNDERSTORMMS...A FEW QUITE STRONG WILL CONTINUE OVER
SOUTHEAST WYOMING FOR THE REST OF THE AFTERNOON AND DURING THE
EVENING.

SCOTT
Special weather statement, Jul 16, 4:14 PM MDT, 3 hours 25 minutes before
WYZ012-017-162300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
410 PM MDT MON JUL 16 1990

INTENSE THUNDERSTORMS CONTINUE TO RUMBLE ACROSS SOUTHEAST WYOMING
THIS AFTERNOON. AT 405 PM MDT...FT LARAMIE...20 MILES NORTHWEST OF
TORRINGTON...REPORTED VERY HEAVY RAIN...MARBLE SIZED DIAMETER HAIL
AND WIND GUSTS TO 35 MILES AN HOUR. THE INTENSE STORM WAS MOVING TO
THE SOUTHEAST AT 25 MILES AN HOUR. THIS STORM WILL MOVE THROUGH THE
TOWNS OF LINGLE AND TORRINGTON BY 445 PM MDT.

OTHER INTENSE THUNDERSTORMS WERE ALSO LOCATED OVER BURNS...23 MILES
EAST OF CHEYENNE...ALBIN...41 MILES NORTHEAST OF CHEYENNE AND NEAR
LA GRANGE...29 MILES SOUTH OF TORRINGTON. EACH OF THESE STORMS WERE
MOVING TO THE SOUTHEAST AT 25 MILES AN HOUR.

THE THUNDERSTORMS IN SOUTHEAST WYOMING ALL HAVE THE POTENTIAL TO
PRODUCE VERY HEAVY RAIN...HAIL...GUSTY WINDS TO 45 MILES AN HOUR AND
DANGEROUS LIGHTNING.
PEOPLE IN SOUTHEAST WYOMING SHOULD BE AWARE OF THE THUNDERSTORMS
THROUGH THE EVENING HOURS. IF A STORM APPROACHES TAKE IMMEDIATE
SHELTER AS LIGHTNING FROM THE STOTMS CAN BE DEADLY.
WEILAND
Special weather statement, Jul 16, 4:51 PM MDT, 2 hours 48 minutes before
NEZ001-005-011-170000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
450 PM MDT MON JUL 16 1990

...STRONG THUNDERSTORMS HAD ENTERED THE WEST NEBRASKA PANHANDLE...

AT 445 PM MDT...ISOLATED THUNDERSTORMS WERE LOCATED 40 MILES SOUTHWEST
OF SCOTTSBLUFF NEBRASKA...OR 15 MILES SOUTHWEST OF HARRISBURG NEBRASKA.
THE STORMS WERE MOVING EAST AT 15 MILES AN HOUR.  IF THE STORMS MAINTAIN
THEIR PRESENT MOVEMENT...THEY SHOULD PASS BETWEEN THE TOWNS OF HARRISBURG
AND KIMBALL NEBRASKA BY 600 PM MDT.

BRIEF HEAVY RAIN...GUSTY WIND AND SMALL HAIL ARE POSSIBLE WITH THESE
STORMS ACROSS SOUTHERN BANNER AND NORTHERN KIMBALL COUNTIES OF THE
CENTRAL AND SOUTH NEBRASKA PANHANDLE UNTIL 600 PM dMDT.
WIRTH
Special weather statement, Jul 16, 5:08 PM MDT, 2 hours 31 minutes before
NEZ001-005-011-170000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
508 PM MDT MON JUL 16 1990

...STRONG THUNDERSTORMS HAD DEVELOPED OVER THE NORTHWEST NEBRASKA
PANHANDLE...

AT 500 PM MDT...STRONG THUNDERSTORMS CONTINUED TO DEVELOP OVER THE NORTH
NEBRASKA PANHANDLE FROM 35 MILES NORTHWEST TO 35 MILES NORTH OF
SCOTTSBLUFF NEBRASKA...AND 50 MILES WEST OF CHADRON NEBRASKA.
THE STORMS WERE MOVING EAST AT 20 MILES AN HOUR.

BRtIEF HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DANGEROUS CLOUD TO GROUND
LIGHTNING CAN BE EXPECTED ACROSS SIOUX AND NORTHERN SCOTTS BLUFF COUNTIES
OF THE NEBRASKA PANHANDLE UNTIL 600 PM MDT.
WIRTH
Special weather statement, Jul 16, 5:45 PM MDT, 1 hour 54 minutes before
NEZ001-005-011-170200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
545 PM MDT MON JUL 16 1990

...THUNDERSTORMS CONTINUED OVER THE WESTERN NEBRASKA PANHANDLE...

AT 540 PM MDT...VERY STRONG THUNDERSTORMS CONTINUED TO DEVELOP OVER THE
NORTHERN NEBRASKA PANHANDLE 30 MILES WEST OF CHADRON NEBRASKA NEAR THE
TOADSTOOL PARK...AND OVER THE SOUTHERN PANHANDLE 35 MILES WEST OF SIDNEY
NEBRASKA OR NEAR THE TOWN OF KIMBALL.  THE STORMS WERE MOVING EAST AT
25 MILES AN HOUR.

BRIEF HEAVY RAIN...GUSTY WIND...SMALL HAIL AND DANGEROUS CLOUD TO GROUND
LIGHTNING CAN BE EXPECTED ACROSS NORTHEASTERN SIOUX AND DAWES COUNTIES OF
THE NORTHERN NEBRASKA PANHANDLE AND EASTERN KIMBALL AND CHEYENNE COUNTIES
OF THE SOUTHERN NEBRASKA PANHANDLE UNTIL 800 PM MDT THIS MONDAY EVENING.
WIRTH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 6:25 PM MDTSevere Thunderstorm WarningCYSDawes, Sheridan65 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1990Every severe thunderstorm warning in 1990

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.