Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 40, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 9, 1990, 8:59 PM MDT for Cheyenne County, Nebraska. It was in force for 45 min.
The area
The counties it named.
The facts
- Issued
- Jun 9, 1990, 8:59 PM MDT (02:59 UTC)
- Expired
- Jun 9, 1990, 9:44 PM MDT
- In force
- 45 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Cheyenne 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
Denver, CO (KDEN), launched 00:00Z, 3.0 hours before the alert went out and 151 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2364 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBFF 100259
SVRBFF
NEC033-100400-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
859 PM MDT SAT JUN 9 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1000 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE PANHANDLE OF NEBRASKA
SOUTHERN CHEYENNE...THE CITY OF SIDNEY
AT 856 PM MDT...SEVERE THUNDERSTORMS EXTENDED FROM 10 MILES
SOUTHEAST TO 25 MILES SOUTHWEST OF SIDNEY NEBRASKA...ALONG THE
NEBRASKA/COLORADO STATELINE. THESE STORMS WERE MOVING SLOWLY
NORTH LESS THAN 10 MILES AN HOUR.
THE STORMS SHOULD REACH THE CITY OF SIDNEY BETWEEN 930PM AND 945PM
MDT.
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.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING.
PFEIFFERWhat 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 9, 5:32 PM MDT, 3 hours 27 minutes before
WYZ017-100030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 535 PM MDT SAT JUN 9 1990 ...THUNDERSTORMS WERE BUILDING IN SOUTHEAST WYOMING... WEATHER RADAR SHOWED THAT THUNDERSTORMS WERE CONTINUING TO BUILD IN LARAMIE COUNTY OF FAR SOUTHEAST WYOMING AT 530 PM. NONE OF THE STORMS AT THIS TIME WERE VERY STRONG. HOWEVER...CONDITIONS ARE RIPE FOR THESE STORMS TO CONTINUE GETTING STRONGER IN SOUTHEAST WYOMING THIS EVENING. JUST ACROSS THE BORDER IN NORTHEAST COLORADO...SOME STORMS WERE QUITE STRONG. A TORNADO WAS SPOTTED BY THE PUBLIC AT 515 PM 5 MILES WEST OF THE TOWN OF NUNN COLORADO...WHICH IS ABOUT 30 MILES SOUTH OF THE CITY OF CHEYENNE. RESIDENTS OF SOUTHEAST WYOM9ING SHOULD KEEP AN EYE TO THE SKY THIS EVENING AS THESE STORMS CONTINUE TO DEVELOP. IF THREATENING WEATHER APPROACHES...GO TO A SAFE PLACE. DASELER
Special weather statement, Jun 9, 6:11 PM MDT, 2 hours 48 minutes before
WYZ017-100100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 610 PM MDT SAT JUN 9 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 11 PM MDT FOR ALL OF SOUTHEAST WYOMING... THE NATIONAL SEVERE STORMS FORECAST CENTER HAS ISSUED A TORNADO WATCH FOR ALL OF SOUTHEAST UNTIL 11 PM MDT. A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES TO DEVELOP. THE FOLLOWING COUNTIES ARE INCLUDED IN THIS WATCH...LARAMIE...PLATTE ...GOShHEN...THE SOUTHERN HALF OF NIOBRARA...AND SOUTHEAST CONVERSE. IF YOU OBSERVE A TORNADO...SEEK SHELTER INSIDE A REINFORCED STRUCTURE IMMEDIATELY. MENTZER
Special weather statement, Jun 9, 6:14 PM MDT, 2 hours 45 minutes before
WYZ017-100100- SPECIAL WEATHER STATEMENT...CORRECTION NATIONAL WEATHER SERVICE CHEYENNE WY 610 PM MDT SAT JUN 9 1990 ...A TORNADO WATCH IS IN EFFECT UNTIL 11 PM MDT FOR ALL OF SOUTHEAST WYOMING... THE NATIONAL SEVERE STORMS FORECAST CENTER HAS ISSUED A TORNADO WATCH FOR ALL OF SOUTHEAST WYOMING UNTIL 11 PM MDT. A TORNADO WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR TORNADOES TO DEVELOP. THE FOLLOWING COUNTIES ARE INCLUDED IN THIS WATCH..s.LARAMIE...PLATTE ...GOSHEN...THE SOUTHERN HALF OF NIOBRARA...AND SOUTHEAST CONVERSE. IF YOU OBSERVE A TORNADO...SEEK SHELTER INSIDE A REINFORCED STRUCTURE IMMEDIATELY. MENTZER
Special weather statement, Jun 9, 7:20 PM MDT, 1 hour 39 minutes before
NEZ001-005-011-100300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 720 PM MDT SAT JUN 9 1990 ...TORNADO WATCH FOR NEBRASKA PANHANDLE UNTIL 11PM MDT... AT 718 PM MDT...RADAR INDICATED SHOWERS AND SCATTERED THUNDERSTORMS MOVING INTO THE SOUTHWESTERN CORNER OF THE NEBRASKA PANHANDLE FROM NORTHERN COLORADO. THE STRONGEST STORM WAS LOCATED 35 MILES SOUTH OF SCOTTSBLUFF NEBRASKA...JUST 10 MILES NORTHEAST OF KIMBALL IN KIMBALL COUNTY. ANOTHER STRONG STORM WAS 60 MILES SOUTH OF SCOTTSBLUFF NEBRASKA...ABOUT 3 TO 5 MILES INSIDE COLORADO. THE SHOWERS AND THUNDERSTORMS WERE SPREADING TO THE NORTH AT 10 MILES AN HOUR. BRIEF HEAVY RAIN...STRONG WIND AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS AS THEY MOVE ACROSS KIMBALL...EASTERN BANNER...AND WESTERN MORRILL COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 9PM MDT. OTHER THUNDERSTORMS WERE LOCATED IN SOUTHEASTERN WYOMING...AROUND CHEYENNE AND LARAMIE AND EXTENDING NORTH TO5 NEAR WHEATLAND AND HAWK SPRINGS. THE STORMS IN WYOMING WERE MOVING SLOWLY NORTH AROUND 10 MILES AN HOUR. TORNADO WATCH 435 REMAINS IN EFFECT FOR THE ENTIRE NEBRASKA PANHANDLE UNTIL 11 PM MDT THIS SATURDAY EVENING. PFEIFFER
Special weather statement, Jun 9, 7:52 PM MDT, 1 hour 7 minutes before
WYZ007-100230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 750 PM MDT SAT JUN 9 1990 ...SOME STRONG THUNDERSTORMS WERE ALONG THE WYOMING/IDAHO BORDER AT 745 PM... RADAR AND SATELLITE PICTURES SHOWED AN AREA OF THUNDERSTORMS NEAR THE WYOMING/IDAHO BORDER TO THE WEST AND SOUTH OF AFTON AT 745 PM. MOST OF THE STORMS WERE IN IDAHO...ALTHOUGH A FEW WERE IN WYOMING. THESE STORMS WERE MOVING NORTH OR NORTHEAST AT ABOUT 20 MILES AN HOUR. THE MAIN WEATHER THREAT FROM THESE STORMS WILL BE STRONG GUSTY WINDS. SIMILAR STORMS IN EASTERN IDAHO PRODUCED AREAS OF STRONG GUSTY WINDS AND AREAS OF DUST AT AROUND 700 TO 730 PM. AS THESE STORMS MOVE THROUGH THE FAR WESTERN PART OF WYO MING THE REST OF THIS EVENING...PEOPLE SHOULD BE ALERT TO THE CHANCE OF STRONG GUSTY WINDS AND DANGEROUS LIGHTNING. IF THREATENING WEATHER APPROACHES...GO TO A SAFE PLACE. DASELER
Special weather statement, Jun 9, 8:53 PM MDT, 6 minutes before
WYZ012-017-100330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 855 PM MDT SAT JUN 9 1990 ...THE TORNADO WATCH HAS BEEN CANCELLED FOR LARAMIE COUNTY OF SOUTHEAST WYOMING...BUT CONTINUES FOR PLATTE...GOSHEN...SOUTHEAST CONVERSE...AND SOUTHERN NIOBRARA COUNTIES UNTIL 11 PM... THE WEATHER HAS STABILIZED IN LARAMIE COUNTY AS OF 845 PM...WITH ONLY SOME LIGHT SHOWERS SCATTERED ABOUT. HENCE...THE TORNADO WATCH HAS BEEN CANCELLED FOR LARAMIE COUNTY AS OF 9 PM. WEATHER CONDITIONS ELSEWHERE IN SOUTHEAST WYOMING COULD STILL SUPPORT STRONG THUNDERSTORMS...AND SO THE TORNADO WATCH CONTINUES. RADAR AT 845 PM INDICATED AN ISOLATED STRONG STORM JUST TO THE EAST OF LARAMIE PEAK...SOlME 25 MILES NORTHWEST OF WHEATLAND. THIS STORM WAS DRIFTING NORTH AT ABOUT 20 MILES AN HOUR...AND COULD PRODUCE SOME SMALL HAIL. DASELER
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 8:10 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 60 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.