Alert archive / Wyoming / Tornado Warnings in 1996
Tornado Warning 12, NWS Cheyenne, WY
NWS Cheyenne, WY issued this tornado warning at Jul 13, 1996, 4:57 PM MDT for Platte County, Wyoming. It was in force for 33 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 13, 1996, 4:57 PM MDT (22:57 UTC)
- Expired
- Jul 13, 1996, 5:30 PM MDT
- In force
- 33 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Platte County, WY
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 13, 5:15 PM MDT | Hail 1.75 | Glendo, WY |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 11.0 hours before the alert went out and 274 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
- 1401 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 61 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 132259 TORCYS WYC031-132330- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 457 PM MDT SAT JUL 13 1996 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 530 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST WYOMING ...NORTHERN PLATTE COUNTY INCLUDING GLENDO... A SEVERE THUNDERSTORM WAS IN NORTHERN PLATTE COUNTY 5 MILES NORTHWEST OF GLENDO. THE THUNDERSTORM WAS MOVING SOUTHEAST AT 20 MPH. DOPPLER RADAR INDICATED THAT A TORNADO IS LIKELY WITH THIS THUNDERSTORM ALONG WITH ONE TO ONE AND A HALF INCH HAIL. DOPPLER RADAR DETECTED STRONG ROTATION IN THIS STORM. IT HAS THE POTENTIAL TO PRODUCE A TORNADO AT ANY MOMENT! BAKER
What forecasters said that day
The local office's own words before this tornado 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 13, 11:47 AM MDT, 5 hours 10 minutes before
WYZ059>060-064>070-132000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1146 AM MDT SAT JUL 13 1996 ...THUNDERSTORMS DEVELOPING IN SOUTHEAST WYOMING... THUNDERSTORMS HAVE STARTED TO DEVELOP OVER THE NORTHERN LARAMIE RANGE LATE THIS SATURDAY MORNING. AT 1140 AM...A THUNDERSTORM WAS LOCATED 16 MILES NORTHWEST OF WHEATLAND. THIS STORM WAS MOVING TO THE SOUTHEAST AT 15 MPH. AT ITS CURRENT MOVEMENT...THE STORM WILL APPROACH WHEATLAND AROUND 1230 PM. THIS THUNDERSTORM AS WELL AS OTHER STORMS WHICH WILL DEVELOP EARLY IN THE AFTERNOON WILL LIKELY PRODUCE HEAVY RAIN AND HAIL. PEOPLE IN SOUTHEAST WYOMING SHOULD BE PREPARED FOR THUNDERSTORMS THIS AFTERNOON AND EVENING. IF A STORM APPROACHES...BE SURE TO MOVE TO A SAFE SHELTER AND OFF OF WATER. WCJIN-WYSE-WYNE WEILAND
Special weather statement, Jul 13, 12:19 PM MDT, 4 hours 38 minutes before
WYZ059>060-064>070-132000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1219 PM MDT SAT JUL 13 1996 ...THUNDERSTORMS CONTINUE OVER PARTS OF SOUTHEAST WYOMING... AT 1215 PM...THUNDERSTORMS WERE LOCATED 25 MILES NORTHWEST OF WHEATLAND AND 10 MILES EAST OF WHEATLAND. BOTH OF THESE STORMS WERE MOVING TO THE SOUTHEAST AT 15 MPH. THE STRONGER PARTS OF THESE THUNDERSTORMS WILL PASS TO THE SOUTH OF WHEATLAND. THESE THUNDERSTORMS AS WELL AS OTHER STORMS WHICH WILL DEVELOP DURING THE AFTERNOON IN SOUTHEAST WYOMING WILL LIKELY PRODUCE HEAVY RAIN AND HAIL. PEOPLE IN SOUTHEAST WYOMING SHOULD BE PREPARED FOR THUNDERSTORMS THIS AFTERNOON AND EVENING. IF A STORM APPROACHES...BE SURE TO MOVE TO A SAFE SHELTER AND OFF OF WATER. WCJIN-WYSE-WYNE WEILAND
Special weather statement, Jul 13, 1:00 PM MDT, 3 hours 57 minutes before
WYZ059-060-064>070-132000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1258 PM MDT SAT JUL 13 1996 ...THUNDERSTORMS CONTINUE TO DEVELOP IN SOUTHEAST WYOMING... AT 1255 PM THUNDERSTORM COVERAGE WAS INCREASING IN ALBANY COUNTY AND STORMS CONTINUED IN PLATTE COUNTY. THE STRONGEST STORM WAS LOCATED 20 MILES WEST OF WHEATLAND AND ANOTHER STRONG STORM WAS 15 MILES SOUTHWEST OF WHEATLAND. THE STORMS WERE MOVING SOUTHEAST AT 20 MPH. THESE THUNDERSTORMS AS WELL AS OTHER STORMS WHICH WILL DEVELOP DURING THE AFTERNOON IN SOUTHEAST WYOMING WILL LIKELY PRODUCE HEAVY RAIN AND HAIL. PEOPLE IN SOUTHEAST WYOMING SHOULD BE PREPARED FOR THUNDERSTORMS THIS AFTERNOON AND EVENING. IF A STORM APPROACHES...BE SURE TO MOVE TO A SAFE SHELTER. WCJIN-WYSE-WYNE HARRISON
Special weather statement, Jul 13, 1:35 PM MDT, 3 hours 22 minutes before
WYZ059-060-064>070-132100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 135 PM MDT SAT JUL 13 1996 AT 130 PM THUNDERSTORMS WERE SCATTERED ACROSS MUCH OF SOUTHEAST WYOMING. TWO STRONG STORMS CLOSE TO EACH OTHER HAD DEVELOPED IN WESTERN LARAMIE COUNTY AND WERE ABOUT 15 MILES WEST TO NORTHWEST OF CHEYENNE. THESE STORMS WERE MOVING SOUTHEAST AT 20 MPH AND WILL MOVE THROUGH OR NEAR CHEYENNE BY 230 PM. A CLUSTER OF STORMS WAS LOCATED IN WESTERN PLATTE COUNTY AND NORTHERN ALBANY COUNTY WITH A FEW MORE STORMS SURROUNDING LARAMIE. BRIEF HEAVY RAIN AND SMALL HAIL ARE LIKELY WITH THUNDERSTORMS THROUGH THE EVENING. PEOPLE IN SOUTHEAST WYOMING SHOULD BE PREPARED FOR THUNDERSTORMS THIS AFTERNOON AND EVENING. IF A STORM APPROACHES...BE SURE TO MOVE TO A SAFE SHELTER. WCJIN-WYSE-WYNE HARRISON
Special weather statement, Jul 13, 2:17 PM MDT, 2 hours 40 minutes before
WYZ067>070-132130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 217 PM MDT SAT JUL 13 1996 ...A TORNADO WATCH HAS BEEN ISSUED FOR THE SOUTHEAST CORNER OF WYOMING UNTIL 900 PM... THE STORM PREDICTION CENTER IN KANSAS CITY HAS ISSUED A TORNADO WATCH FOR THE SOUTHEAST CORNER OF WYOMING. THIS WATCH IS IN EFFECT UNTIL 900 PM. THIS WATCH INCLUDES THE CITIES OF CHEYENNE...TORRINGTON... WHEATLAND AND PINE BLUFFS. A TORNADO WATCH MEANS THAT WEATHER CONDITIONS ARE FAVROABLE FOR THE FORMATION OF SEVERE THUNDERSTORMS AND EVEN TORNADOES. AT 210 PM...A SEVERE THUNDERSTORM WAS LOCATED IN EXTREME SOUTHWEST LARAMIE COUNTY. OTHER THUNDERSTORMS WERE SCATTERED ABOUT SOUTHEAST WYOMING...BUT WERE NOT AS STRONG. < NOW IS THE TIME TO PREPARE FOR THE POSSIBILITY OF SEVERE THUNDERSTORMS AND TORNADOES. PLEASE REVIEW SAFETY RULES AND LOCATE A NEARBY PLACE OF SAFETY. IOF A STORM APPROACHES...MOVE TO A SAFE SHELTER. WCJIN-WYSE WEILAND
Special weather statement, Jul 13, 3:51 PM MDT, 1 hour 6 minutes before
WYZ068-132215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 350 PM MDT SAT JUL 13 1996 A SEVERE THUNDERSTORM WARNING CONTINUES FOR EASTERN GOSHEN COUNTY UNTIL 4 PM MDT. AT 348 PM RADnAR SHOWED ONE STORM JUST EAST OF TORRINGTON AND ANOTHER STORM 18 MILES NORTH OF TORRINGTON. THESE STORMS CONTINUED TO MOVE SOUTHEAST AT 20 MPH. HARRISON
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 2:08 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 37 min |
| Jul 13, 3:12 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 63 min |
| Jul 13, 3:35 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 25 min |
| Jul 13, 4:36 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 39 min |
| Jul 13, 4:51 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 39 min |
| Jul 13, 5:33 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 27 min |
| Jul 13, 5:40 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 35 min |
Nearby
Tornado Warnings in Wyoming, 1996Every tornado warning in 1996Tornadoes in 1996
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.