Alert archive / Wyoming / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 14, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 31, 1994, 5:15 PM MDT for Sweetwater County, Wyoming. It was in force for 60 min.
The area
The counties it named.
The facts
- Issued
- May 31, 1994, 5:15 PM MDT (23:15 UTC)
- Expired
- May 31, 1994, 6:15 PM MDT
- In force
- 60 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Sweetwater County, WY
The nearest sounding before it
Lander/Hunt Fiel, WY (KLND), launched 12:00Z, 11.3 hours before the alert went out and 130 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
- 1159 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 242 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, May 31, 1:20 PM MDT, 3 hours 55 minutes before
WYZ016>025-312120- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 120 PM MDT TUE MAY 31 1994 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THE SOUTHWEST CORNER OF WYOMING UNTIL 800PM... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE SOUTHWEST CORNER OF WYOMING EFFECTIVE FROM 130PM UNTIL 800PM THIS TUESDAY EVENING. THE WATCH INCLUDES UINTA...SWEETWATER AND SOUTHERN LINCOLN COUNTIES. CITIES INCLUDED IN THE WATCH ARE EVANSTON... ROCK SPRINGS AND KEMMERER. AT 100PM RADAR SHOWED ONLY LIGHT THUNDERSTORMS IN THE SOUTHWEST CORNER OF WYOMING...MAINLY FROM EVANSTON TO ROCK SPRINGS AND SOUTHWARD. MUCH STRONGER AND DAMAGING THUNDERSTORMS HAVE OCCURRED OVER UTAH THIS AFTERNOON HOWEVER. PEOPLE IN THE SOUTHWEST CORNER OF WYOMING THIS AFTERNOON SHOULD REMAIN ALERT TO THE APPROACH OF THREATENING WEATHER. BE PREPARED TO MOVE INDOORS OR TO ANOTHER SAFE PLACE QUICKLY IF CONDITIONS WARRANT. WCJIN-WYSW COX
Special weather statement, May 31, 1:22 PM MDT, 3 hours 53 minutes before
WYZ016>025-312120- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 120 PM MDT TUE MAY 31 1994 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THE SOUTHWEST CORNER OF WYOMING UNTIL 800PM... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE SOUTHWEST CORNER OF WYOMING EFFECTIVE FROM 130PM UNTIL 800PM THIS TUESDAY EVENING. THE WATCH INCLUDES UINTA...SWEETWATER AND SOUTHERN LINCOLN COUNTIES. CITIES INCLUDED IN THE WATCH ARE EVANSTON... ROCK SPRINGS AND KEMMERER. AT 100PM RADAR SHOWED ONLY LIGHT THUNDERSTORMS IN THE SOUTHWEST CORNER OF WYOMING...MAINLY FROM EVANSTON TO ROCK SPRINGS AND SOUTHWARD. MUCH STRONGER AND DAMAGING THUNDERSTORMS HAVE OCCURRED OVER UTAH THIS AFTERNOON HOWEVER. PEOPLE IN THE SOUTHWEST CORNER OF WYOMING THIS AFTERNOON SHOULD REMAIN ALERT TO THE APPROACH OF THREATENING WEATHER. BE PREPARED TO MOVE INDOORS OR TO ANOTHER SAFE PLACE QUICKLY IF CONDITIONS WARRANT. WCJIN-WYSW COX
Special weather statement, May 31, 2:09 PM MDT, 3 hours 6 minutes before
WYZ016>025-312200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 210 PM MDT TUE MAY 31 1994 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR THE SOUTHWEST CORNER OF WYOMING UNTIL 800 PM... AT 2 PM...RADAR INDICATED A STRONG THUNDERSTORM 15 MILES SOUTHWEST OF ROCK SPRINGS. THIS STORM WAS MOVING NORTHEAST AT 25 TO 30 MPH AND WILL MOVE NEAR GREEN RIVER...JUST WEST OF ROCK SPRINGS...BY 230 PM. PEOPLE IN THE PATH OF THIS STORM NEED TO EXPECT STRONG WINDS...SMALL HAIL AND BRIEF HEAVY RAIN AS IT MOVES THROUGH. NO OTHER SIGNIFICANT THUNDERSTORM ACTIVITY WAS NOTED IN WYOMING AT 2 PM ...HOWEVER MORE STORMS ARE EXPECTED TO DEVELOP AS THE AFTERNOON WEARS ON. STORMS IN SOUTHWEST WYOMING THIS AFTERNOON WILL LIKELY PRODUCE VERY STRONG WINDS OF 60 MPH...HAIL AND BRIEF HEAVY RAIN. PEOPLE ACROSS SOUTHWEST WYOMING NEED TO STAY TUNED FOR FURTHER INFORMATION AS IT COMES AVAILABLE. BE PREPARED TO MOVE INDOORS OR TO ANOTHER SAFE PLACE QUICKLY IF CONDITIONS WARRANT. WCJIN-WYSW EVANS
Special weather statement, May 31, 2:10 PM MDT, 3 hours 5 minutes before
WYZ016>025-312200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 210 PM MDT TUE MAY 31 1994 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR THE SOUTHWEST CORNER OF WYOMING UNTIL 800 PM... AT 2 PM...RADAR INDICATED A STRONG THUNDERSTORM 15 MILES SOUTHWEST OF ROCK SPRINGS. THIS STORM WAS MOVING NORTHEAST AT 25 TO 30 MPH AND WILL MOVE NEAR GREEN RIVER...JUST WEST OF ROCK SPRINGS...BY 230 PM. PEOPLE IN THE PATH OF THIS STORM NEED TO EXPECT STRONG WINDS...SMALL HAIL AND BRIEF HEAVY RAIN AS IT MOVES THROUGH. NO OTHER SIGNIFICANT THUNDERSTORM ACTIVITY WAS NOTED IN WYOMING AT 2 PM ...HOWEVER MORE STORMS ARE EXPECTED TO DEVELOP AS THE AFTERNOON WEARS ON. STORMS IN SOUTHWEST WYOMING THIS AFTERNOON WILL LIKELY PRODUCE VERY STRONG WINDS OF 60 MPH...HAIL AND BRIEF HEAVY RAIN. PEOPLE ACROSS SOUTHWEST WYOMING NEED TO STAY TUNED FOR FURTHER INFORMATION AS IT COMES AVAILABLE. BE PREPARED TO MOVE INDOORS OR TO ANOTHER SAFE PLACE QUICKLY IF CONDITIONS WARRANT. WCJIN-WYSW EVANS
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 4:16 PM MDT | Severe Thunderstorm Warning | CYS | Sweetwater | 59 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 1994Every severe thunderstorm warning in 1994
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.