Alert archive / Wyoming / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 3, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Apr 26, 1989, 4:14 PM MDT for Albany County, Platte County, Wyoming. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Apr 26, 1989, 4:14 PM MDT (22:14 UTC)
- Expired
- Apr 26, 1989, 5:15 PM MDT
- In force
- 61 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Albany County, WY, Platte 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
Lander/Hunt Fiel, WY (KLND), launched 12:00Z, 10.2 hours before the alert went out and 294 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
- 725 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Apr 26, 12:26 PM MDT, 3 hours 48 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1220 PM MDT WED APR 26 1989 ...A DEVELOPING SPRING STORM WILL BRING A RETURN TO WINTER LIKE WEATHER TO WYOMING THROUGH THURSDAY NIGHT... A DEVELOPING SPRING STORM OVER THE WESTERN UNITED STATES AT NOONTIME WEDNESDAY WILL CONTINUE TO MOVE SLOWLY EAST. THIS STORM WILL BRING A RETURN TO WINTER WEATHER TO WYOMING LATE TONIGHT THROUGH THURSDAY NIGHT. THE PRECIPITATION WILL BE MAINLY IN THE FORM OF SNOW ACROSS NORTHERN WYOMING LATE TONIGHT AND THURSDAY...WITH SIGNIFICANT SNOWFALL LIKELY. THE HEAVIER AMOUNTS WILL BE IN THE ABSAROKA AND BIG HORN MOUNTAINS. THE POSSIBILITY OF SNOW WILL SPREAD TO SOUTHERN WYOMING THURSDAY NIGHT. MEANWHILE...AHEAD OF THE SPRING STORM SYSTEM WILL BE SHOWERS AND THUNDERSTORMS. AT NOON MDT A LARGE AREA OF THUNDERSTORMS WAS NOTED FROM SOUTH OF JACKSON TO NEAR ROCK SPRINGS. THIS AREA WAS MOVING TO THE NORTHEAST AT 30 MILES AN HOUR. THUNDERSTORMS WILL OCCUR OVER MAINLY THE SOUTH AND EAST PARTS OF THE STATE THIS AFTERNOON AND EARLY TONIGHT. SOME OF THESE STORMS MAY PRODUCE...STRONG WIND GUSTS...HAIL AND BRIEF HEAVY RAIN...ESPECIALLY IN EASTERN WYOMING. THIS IS A POTENTIALLY DANGEROUS SPRING STORM AND THOSE TRAVELING OR WITH OUTSIDE INTERESTS SHOULD BE AWARE OF THE POSSIBILITY OF THUNDERSTORMS THROUGH THIS EVENING AND SIGNIFICANT SNOWFALL ACROSS THE NORTH LATE TONIGHT AND THURSDAY. STOCKMEN IN THE NORTH PART OF 7THE STATE SHOULD TAKE PRECAUTIONS TO PROTECT YOUNG LIVESTOCK FROM THE COLD AND WET WEATHER. WEILAND
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 3:16 PM MDT | Severe Thunderstorm Warning | CYS | Albany | 59 min |
| Apr 26, 4:46 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 59 min |
| Apr 26, 5:16 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 44 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.