Alert archive / Wyoming / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 77, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 22, 1998, 8:35 PM MDT for Goshen County, Wyoming. It was in force for 40 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
- Jun 22, 1998, 8:35 PM MDT (02:35 UTC)
- Expired
- Jun 22, 1998, 9:15 PM MDT
- In force
- 40 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Goshen County, WY
The radar
The Cheyenne radar (KCYS), 111 km from the middle of the area, began a volume at 02:36 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 22, 8:50 PM MDT | Hail 0.75 | Torrington, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 22, 7:45 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 2.6 hours before the alert went out and 251 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
- 610 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 2011 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 575 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 18.5
The text
As transmitted, in the capitals the NWS used until 2016.
975 WUUS1 KCYS 230236 RRA SVRCYS WYC015-230315- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 835 PM MDT MON JUN 22 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL GOSHEN COUNTY IN SOUTHEASTERN WYOMING * UNTIL 915 PM MDT * AT 833 PM...SPOTTERS INDICATED A SEVERE THUNDERSTORM 3 MILES WEST AND SOUTHWEST OF TORRINGTON... MOVING EAST AT 15 MPH. HAIL UP TO 3/4 OF AN INCH IN DIAMETER WAS REPORTED AT 833 PM NEAR LINGLE ABOUT 10 MILES NORTHWEST OF TORRINGTON. * THE SEVERE THUNDERSTORM WILL BE NEAR... TORRINGTON AT THIS TIME THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. WCJIN-WYSE JAD
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, Jun 22, 5:57 PM MDT, 2 hours 38 minutes before
WYZ059-060-064-066>070-230115- SPECIAL WEATHER STATEMENT...CORRECTION TO TIMES NATIONAL WEATHER SERVICE CHEYENNE WY 557 PM MDT MON JUN 22 1998 ...A TORNADO WATCH CONTINUES UNTIL 8 PM FOR MUCH OF EASTERN WYOMING... RADAR AT 545 PM SHOWED A LINE OF THUNDERSTORMS FROM ABOUT 25 MILES NORTH OF TORRINGTON TO ABOUT 25 MILES SOUTHWEST OF WHEATLAND. NONE OF THESE STORMS HAD PRODUCED ANY SEVERE WEATHER THROUGH 545 PM. THE ONLY SIGNIFICANT REPORT SO FAR HAS BEEN PEA SIZE HAIL AND SOME ROTATION IN THE CLOUDS IN THE LINGLE AREA BETWEEN 530 TO 545 PM... SOME 10 TO 15 MILES NORTHWEST OF TORRINGTON. OTHER STORMS IN EAST CENTRAL WYOMING HAVE MOVED INTO THE NORTHERN PARTS OF CONVERSE AND NIOBRARA COUNTIES. ONLY ISOLATED WEAK STORMS WERE OVER FAR SOUTHEAST WYOMING IN THE LARAMIE AND CHEYENNE AREAS. THE POTENTIAL FOR STRONG POSSIBLY SEVERE STORMS CONTINUES UNTIL 8 PM. PLATTE AND GOSHEN COUNTIES REMAIN THE MAIN AREA OF CONCERN AT THIS TIME. WCJIN-WYSE-WYNE JAD
Special weather statement, Jun 22, 6:02 PM MDT, 2 hours 33 minutes before
NEZ001>003-019>021-054-055-230115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 602 PM MDT MON JUN 22 1998 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM... AT 555 PM...RADAR SHOWED A BAND OF STORMS MOVING INTO THE WESTERN PART OF SIOUX COUNTY. NONE OF THE STORMS APPEARED TO BE SEVERE AT THIS TIME. A FEW OTHER WEAK STORMS WERE MOVING INTO WESTERN BANNER COUNTY. ALL STORMS WERE MOVING NORTHEAST AROUND 15 TO 20 MPH. THE POTENTIAL FOR STRONG POSSIBLY SEVERE STORMS CONTINUES IN THE PANHANDLE UNTIL 8 PM. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION. JAD
Special weather statement, Jun 22, 6:02 PM MDT, 2 hours 33 minutes before
NEZ001>003-019>021-054-055-230115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 602 PM MDT MON JUN 22 1998 ...A TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM... AT 555 PM...RADAR SHOWED A BAND OF STORMS MOVING INTO THE WESTERN PART OF SIOUX COUNTY. NONE OF THE STORMS APPEARED TO BE SEVERE AT THIS TIME. A FEW OTHER WEAK STORMS WERE MOVING INTO WESTERN BANNER COUNTY. ALL STORMS WERE MOVING NORTHEAST AROUND 15 TO 20 MPH. THE POTENTIAL FOR STRONG POSSIBLY SEVERE STORMS CONTINUES IN THE PANHANDLE UNTIL 8 PM. STAY TUNED TO THIS STATION FOR THE LATEST INFORMATION. JAD
Special weather statement, Jun 22, 8:16 PM MDT, 19 minutes before
WYZ059-064>067-069-070-230245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 816 PM MDT MON JUN 22 1998 ..THE TORNADO WATCH FOR MUCH OF EASTERN WYOMING EXPIRED AT 8 PM... STORMS HAVE MOVED NORTH AND EAST OF THE WATCH AREA AT 8 PM...SO THE TORNADO WATCH HAS BEEN ALLOWED TO END. ONLY A FEW STORMS POPPED UP FROM LARAMIE AND CHEYENNE NORTH INTO THE DOUGLAS AREA DURING THE AFTERNOON AND EARLY EVENING. ABOUT THE ONLY SIGNIFICANT WEATHER REPORTED WAS SOME MARBLE SIZE HAIL IN THE WHEATLAND AREA AROUND 645 TO 700 PM. WCJIN-WYSE JAD
Special weather statement, Jun 22, 8:16 PM MDT, 19 minutes before
WYZ059-064>067-069-070-230245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 816 PM MDT MON JUN 22 1998 ..THE TORNADO WATCH FOR MUCH OF EASTERN WYOMING EXPIRED AT 8 PM... STORMS HAVE MOVED NORTH AND EAST OF THE WATCH AREA AT 8 PM...SO THE TORNADO WATCH HAS BEEN ALLOWED TO END. ONLY A FEW STORMS POPPED UP FROM LARAMIE AND CHEYENNE NORTH INTO THE DOUGLAS AREA DURING THE AFTERNOON AND EARLY EVENING. ABOUT THE ONLY SIGNIFICANT WEATHER REPORTED WAS SOME MARBLE SIZE HAIL IN THE WHEATLAND AREA AROUND 645 TO 700 PM. WCJIN-WYSE JAD
Special weather statement, Jun 22, 8:22 PM MDT, 13 minutes before
NEZ001>003-019>021-054-055-WYZ060-068-230305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 822 PM MDT MON JUN 22 1998 ...THE TORNADO WATCH HAS BEEN REPLACED WITH A SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 2 AM... AT 820 PM...STRONG STORMS CONTINUED TO MOVE ACROSS CENTRAL GOSHEN COUNTY IN WYOMING EAST INTO SIOUX AND SCOTTS BLUFF COUNTIES IN NEBRASKA. THE POTENTIAL STILL EXISTS FOR THESE STORMS TO BE NEAR SEVERE LEVELS FOR THE NEXT FEW HOURS...SO A SEVERE THUNDERSTORM WATCH IN NOW IN EFFECT UNTIL 2 AM FOR FAR EASTERN WYOMING AND MOST OF THE NEBRASKA PANHANDLE. THE BIGGEST THREAT AREA THROUGH 10 PM WILL BE ACROSS THE CENTRAL PART OF THE PANHANDLE FROM TORRINGTON TO SCOTTSBLUFF AND EASTWARD. PEOPLE IN FAR EASTERN WYOMING AND THE NEBRASKA PANHANDLE SHOULD REMAIN ALERT TO STORMS MOVING INTO YOUR AREA...AND BE READY TO MOVE INDOORS IF THREATENING WEATHER APPROACHES. JAD
Nearby
Severe Thunderstorm Warnings in Wyoming, 1998Every severe thunderstorm warning in 1998
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; radar from the NEXRAD Level II archive.