Alert archive / Wyoming / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 12, 1989, 3:54 PM MDT for Laramie County, Wyoming. It was in force for 46 min.
The area
The counties it named.
The facts
- Issued
- May 12, 1989, 3:54 PM MDT (21:54 UTC)
- Expired
- May 12, 1989, 4:40 PM MDT
- In force
- 46 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
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 12:00Z, 9.9 hours before the alert went out and 202 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
- 2104 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- -13 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 KCYS 122154
SVRCYS
WYC021-122300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
354 PM MDT FRI MAY 12 1989
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 500 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTHEAST PART OF WYOMING
EXTREME EASTERN LARAMIE COUNTY
THIS INCLUDES THE TOWNS OF PINE BLUFFS AND ALBIN.
AT 345 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 5 MILES
SOUTH OF PINE BLUFFS...OR ABOUT 38 MILES EAST OF CHEYENNE. THIS
STORM WAS MOVING NORTH AT 25 MILES AN HOUR.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.
MENTZERWhat 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, May 12, 2:00 PM MDT, 1 hour 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 155 PM MDT FRI MAY 12 1989 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF EASTERN WYOMING TIL 700 PM MDT... A TORNADO WATCH CONTINUES FOR MUCH OF EASTERN WYOMING TIL 700 PM MDT THIS EVENING. THIS WATCH MEANS THAT TORNADOES ARE POSSIBLE WITH ANY SEVERE THUNDERSTORMS DURING THAT TIME. AS OF 145PM MDT AN AREA OF THUNDERSTORMS CONTINUED FROM WEST OF LARAMIE TO NEAR NEWCASTLE. AT 1140 AM MDT A THUNDERSTORM PRODUCED ONE HALF INCH DIAMETER HAIL AT LARAMIE. THE THUNDERSTORMS WERE MOVING TO THE NORTH AT 25 MPH. A FEW THUNDERSTORMS OVER MUCH OF EASTERN WYOMING THROUGH 700 PM WILL PRODUCE BRIEF HEAVY RAIN...HAIL...DAMAGING WINDS...DANGEROUS LIGHTNING AND THE POSSIBILITY OF TORNADOES. IF A THUNDERSTORM APPROACHES YOUR AREA...TAKE IMMEDIATE AND APPROPRIATE SHELTER. COX
Special weather statement, May 12, 2:06 PM MDT, 1 hour 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 205 PM MDT FRI MAY 12 1989 ...TORNADO WATCH 209 IN EFFECT FOR NEBRASKA PANHANDLE UNTIL 7PM MDT... AN ISOLATED THUNDERSHOWER HAS DEVELOPED ALONG THE WYOMING/NEBRASKA STATELINE...22 MILES WEST OF SCOTTSBLUFF NEBRASKA JUST SOUTH OF THE NORTH PLATTE RIVER NEAR HENRY NEBRASKA. NO MOVEMENT WAS NOTED BUT THE STORM IS EXPECTED TO MOVE GRADUALLY TO THE NORTH BY 230 PM MDT. OTHER SHOWERS AND THUNDERSTORMS WERE DEVELOPING IN EASTERN WYOMING NEAR THE LARAMIE RANGE...AND IN NORTHEAST COLORADO SOUTH OF THE TWIN PAWNEE BUTTES ABOUT 45 MILES SOUTHWEST OF KIMBALL NEBRASKA. TORNADO WATCH NUMBER 209 REMAINS IN EFFECT FOR THE ENTIRE NEBRASKA PANHANDLE UNTIL 7PM MDT THIS FRIDAY EVENING. PFEIFFER
Special weather statement, May 12, 2:44 PM MDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 243 PM MDT FRI MAY 12 1989 ...TORNADO WATCH 209 IN EFFECT FOR NEBRASKA PANHANDLE UNTIL 7PM MDT... THUNDERSTORMS HAVE MOVED INTO THE SOUTHWEST CORNER OF THE NEBRASKA PANHANDLE...14 MILES SOUTHWEST OF KIMBALL NEBRASKA IN KIMBALL COUNTY. THESE STORMS WERE MOVING NORTH AROUND 20 MILES AN HOUR. PERSONS IN WESTERN KIMBALL COUNTY...ESPECIALLY THE TOWNS OF KIMBALL AND BUSHNELL... SHOULD BE PREPARED FOR HEAVY RAIN..STRONG SHIFTING WINDS..AND POSSIBLE HAIL UNTIL 3PM MDT. OTHER THUNDERSTORMS WERE LOCATED IN NORTHEAST COLORADO NEAR STERLING AND NORTH OF AKRON COLORADO. THESE STORMS WERE MOVING NORTH AT 2O TO 25 MILES AN HOUR. THUNDERSTORMS WERE ALSO IN EASTERN WYOMING ALONG THE LARAMIE RANGE WITH A VERY STRONG STORM SOUTHEAST OF DOUGLAS WYOMING. THESE STORMS WERE MOVING NORTH AROUND 20 MILES AN HOUR. < TORNADO WATCH NUMBER 209 REMAINS IN EFFECT UNTIL 7PM FOR THE ENTIRE NEBRASKA PANHANDLE. PFEIFFER
Special weather statement, May 12, 3:10 PM MDT, 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 308 PM MDT FRI MAY 12 1989 ...TORNADO WATCH 209 IN EFFECT FOR NEBRASKA PANHANDLE UNTIL 7PM MDT... THUNDERSTORMS WERE LOCATED IN THE SOUTHWEST CORNER OF THE NEBRASKA PANHANDLE...10 MILES WEST OF KIMBALL NEBRASKA IN KIMBALL COUNTY. THESE STORMS WERE MOVING NORTH AROUND 20 MILES AN HOUR. PERSONS IN WESTERN KIMBALL AND WESTERN BANNER COUNTIES SHOULD BE PREPARED FOR HEAVY RAIN.. STRONG SHIFTING WINDS..AND POSSIBLE HAIL UNTIL 415PM MDT. OTHER STORMS HAVE DEVELOPED ALONG THE WYOMING/NEBRASKA STATELINE...45 MILES NORTHWEST OF SCOTTSBLUFF NEBRASKA. THEY SHOULD ALSO MOVE NORTH. OTHER THUNDERSTORMS WERE LOCATED IN NORTHEAST COLORADO 19 MILES SOUTHWEST OF KIMBALL NEBRASKA..AND NEAR AKRON COLORADO. THESE STORMS WERE MOVING NORTH AT 2O TO 25 MILES AN HOUR. THUNDERSTORMS WERE ALSO IN EASTERN WYOMING ALONG THE LARAMIE RANGE WITH A VERY STRONG STORM SOUTHEAST OF DOUGLAS WYOMING. THESE STORMS WERE MOVING NORTH AROUND 20 MILES AN HOUR. TORNADO WATCH NUMBER 209 REMAINS IN EFFECT UNTIL 7PM FOR THE ENTIRE NEBRASKA PANHANDLE. PFEIFFER
Special weather statement, May 12, 3:24 PM MDT, 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 320 PM MDT FRI MAY 12 1989 ...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN WYOMING TIL 700 PM MDT... A TORNADO WATCH CONTINUES FOR MUCH OF EASTERN WYOMING TIL 700 PM MDT THIS EVENING. THIS WATCH MEANS THAT TORNADOES ARE POSSIBLE WITH ANY SEVERE THUNDERSTORMS DURING THAT TIME. AT 310 PM MDT THUNDERSTORMS CONTINUED IN AN AREA FROM WEST OF LARAMIE TO NEAR NEWCASTLE. STRONG THUNDERSTORMS AT THAT TIME WERE 25 MILES EAST OF DOUGLAS...AND NEAR ALBIN WHICH IS 41 MILES NORTHEAST OF CHEYENNE. THESE STRONGER STORMS WERE PRODUCING HEAVY RAIN...HAIL AND DANGEROUS LIGHTNING. PEA SIZED HAIL WAS REPORTED AT WENDOVER..19 MILES NORTH OF WHEANTLAND AT 115 PM MDT. THUNDERSTORMS WILL CONTINUE TO DEVELOP WITHIN THE WATCH AREA THROUGH THE EARLY EVENING HOURS. SOME OF THESE STORMS MAY PRODUCE SEVERE WEATHER...SUCH AS LARGE HAIL...STRONG WIND GUSTS OR TORNADOES. THE SEVERE THUNDERSTORMS WILL MOST LIKELY OCCUR OVER EXTREME WYOMING. IF A THUNDERSTORM APPROACHES YOUR AREA...TAKE IMMEDIATE AND APPROPRIATE SHELTER. WEILAND
Special weather statement, May 12, 3:31 PM MDT, 23 minutes before
SPECIAL WEATHER STATEMENT CORRECTED NATIONAL WEATHER SERVICE CHEYENNE WY 320 PM MDT FRI MAY 12 1989 ...A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF EASTERN WYOMING TIL 700 PM MDT... A TORNADO WATCH CONTINUES FOR MUCH OF EASTERN WYOMING TIL 700 PM MDT THIS EVENING. THIS WATCH MEANS THAT TORNADOES ARE POSSIBLE WITH ANY SEVERE THUNDERSTORMS DURING THAT TIME. AT 310 PM MDT THUNDERSTORMS CONTINUED IN AN AREA FROM WEST OF LARAMIE TO NEAR NEWCASTLE. STRONG THUNDERSTORMS AT THAT TIME WERE 25 MILES EAST OF DOUGLAS...AND NEAR ALBIN WHICH IS 41 MILES NORTHEAST OF CHEYENNE. THESE STRONGER STORMS WERE PRODUCING HEAVY RAIN...HAIL AND DANGEROUS LIGHTNING. PEA SIZED HAIL WAS REPORTED AT WENDOVER..19 MILES NORTH OF WHEATLAND AT 115 PM MDT. THUNDERSTORMS WILL CONTINUE TO DEVELOP WITHIN THE WATCH AREA THROUGH THE EARLY EVENING HOURS. SOME OF THESE STORMS MAY PRODUCE SEVERE WEATHER...SUCH AS LARGE HAIL...STRONG WIND GUSTS OR TORNADOES. THE SEVERE THUNDERSTORMS WILL MOST LIKELY OCCUR OVER EXTREME EASTERN WYOMING. IF A THUNDERSTORM APPROACHES YOUR AREA...TAKE IMMEDIATE AND APPROPRIATE SHELTER. WEILAND
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 4:32 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 43 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1989Every severe thunderstorm warning in 1989
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.