Funnel Cloud, Big Horn
- When
- June 26, 4:32 PM MST
- Where
- Big Horn County, 5 mi NE of Greybull
- Reported by
- TRAINED SPOTTER
- Coordinates
- 44.527, -107.995 (the zone’s center; the record gives no point)
Funnel Cloud in Wyoming, June 26, 2001
1 funnel cloud, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What forecasters said that day
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Riverton, WY wrote its last area forecast discussion before the first event at Jun 26, 12:00 PM MST, 4 hours 32 minutes earlier.
Area forecast discussion, Jun 26, 12:00 PM MST, 4 hours 32 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 1 PM MDT TUE JUN 26 2001 ISOLD CNVCTN FIRING UP AT 1230 PM THIS AFTN WITH AN OTHERWISE FAIR SKY. ETA/AVN MDLS IN AGRMNT WITH MAIN FTRS THIS RUN...BUT THE ETA HNDLG SHORT TERM DETAILS BTR. LOW LVL CNVRGNC ZONE OVR CNTRL FCST AREA THIS AFTN WITH SHT/WVS MOVG UP FM THE SOUTH WILL KICK OFF CNVCTN THIS AFTN. DWPTS ARE RISING WITH LOW LVL MSTR FLUX FM THE SE...SO THESE STRMS SHOULD HAVE SOME HEAVY SHWRS AND HAIL. THETA-E RDG THRU THIS EVG AT H8 RUNS OVR MAINLY THE FAR E AND STRETCHES TO THE NRN AND NE FCST AREAS. WITH THE RMNTS OF THE SRN CA UPR LOW MOVG INTO THE SW LT TNGHT WILL KEEP TSTMS GOING ALL NIGHT. WITH A SFC LOW DVLPG OVR SW WY THIS AFTN THEN INTO CNTRL WY BY THIS EVG XCPT INCRS SW WNDS BHND THE LOW ESPCLY ON WED AS THE LOW REACHS THE XTRM N-NE BY 12Z. MAIN CHG TO FCST WILL BE TO BUMP UP POPS INTO HIGH SCT RNG FOR THIS EVG. FOR WED THE UPR RDG STARTS BLDG FM THE SW AND WILL GO WITH ONLY ISOLD SHWRS OVR THE CNTRL-SW WITH SCT TSTMS OVR THE N-NE-E AND SCT SHWRS NW. FOR THUR THE RDG CONTS TO BLD OVR THE FCST AREA AND WILL GO WITH ONLY ISOLD PM TSTMS HIGHER TRRN. AS FOR TMPS WED WILL UNDERCUT GUICDANCE SM AND CONT TMPS SMLR TO TODAY OR A LTL WARMER...AND THEN FOR THUR A FEW DEGS WARMER. XTNDD FCST ON TRAK WITH HOT AND DRY WITH SLGHT CHC PM TSTMS MAINLY HIGHER TRRN AS RDG CONTS TO BLD OVR THE CNTRL RCKYS. RWM .RIW...NONE.
In the hours before
Special weather statement, Jun 26, 11:45 AM MST, 4 hours 47 minutes before
WYZ002>005-008>015-019-020-022>028-262200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 1245 PM MDT TUE JUN 26 2001 ...SEVERE WEATHER OUTLOOK... THE SEVERE WEATHER POTENTIAL IN WESTERN AND CENTRAL WYOMING WILL BE SLIGHT THIS AFTERNOON AND EVENING. SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY. DISCUSSION... INCREASING SUBTROPICAL MOISTURE FROM THE SOUTH TODAY WILL BRING SCATTERED THUNDERSTORMS TO THE REGION LATE THIS AFTERNOON AND EVENING. THERE IS A SLIGHT CHANCE THAT SOME OF THESE STORMS WILL PRODUCE LARGE HAIL AND DAMAGING WINDS. THE MAIN THREAT OVER SWEETWATER AND SUBLETTE COUNTIES WILL BE DAMAGING WINDS AS THERE IS LITTLE CHANCE FOR LARGE HAIL. THIS OUTLOOK IS FOR THE FOLLOWING COUNTIES IN WESTERN AND CENTRAL WYOMING BIG HORN FREMONT HOT SPRINGS JOHNSON NATRONA PARK SUBLETTE SWEETWATER WASHAKIE RWM WCJIN-WYNW-WYSW-WYNE
Special weather statement, Jun 26, 11:45 AM MST, 4 hours 47 minutes before
WYZ002>005-008>015-019-020-022>028-262200- SEVERE WEATHER OUTLOOK...RETRANSMISSION NATIONAL WEATHER SERVICE RIVERTON WY 1245 PM MDT TUE JUN 26 2001 THE SEVERE WEATHER POTENTIAL IN WESTERN AND CENTRAL WYOMING WILL BE SLIGHT THIS AFTERNOON AND EVENING. SPOTTER ACTIVATION MAY BE NECESSARY LATER TODAY. DISCUSSION... INCREASING SUBTROPICAL MOISTURE FROM THE SOUTH TODAY WILL BRING SCATTERED THUNDERSTORMS TO THE REGION LATE THIS AFTERNOON AND EVENING. THERE IS A SLIGHT CHANCE THAT SOME OF THESE STORMS WILL PRODUCE LARGE HAIL AND DAMAGING WINDS. THE MAIN THREAT OVER SWEETWATER AND SUBLETTE COUNTIES WILL BE DAMAGING WINDS AS THERE IS LITTLE CHANCE FOR LARGE HAIL. THIS OUTLOOK IS FOR THE FOLLOWING COUNTIES IN WESTERN AND CENTRAL WYOMING BIG HORN FREMONT HOT SPRINGS JOHNSON NATRONA PARK SUBLETTE SWEETWATER WASHAKIE RWM WCJIN-WYNW-WYSW-WYNE
Special weather statement, Jun 26, 1:25 PM MST, 3 hours 7 minutes before
WYZ015-262130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 225 PM MDT TUE JUN 26 2001 ...THUNDERSTORMS MOVING TOWARDS ALCOVA AND PATHFINDER RESERVOIRS IN SOUTHERN NATRONA COUNTY... AT 225 PM MDT...RIVERTON DOPPLER RADAR SHOWED A CLUSTER OF THUNDERSTORMS OVER CARBON COUNTY...MOVING NORTH TOWARDS ALCOVA AND PATHFINDER RESERVOIRS IN SOUTHERN NATRONA COUNTY. THESE THUNDERSTORMS WILL BE AFFECTING THESE RECREATIONAL AREAS FOR THE NEXT SEVERAL HOURS...SO BOATERS AND OTHERS NEAR THE WATER SHOULD TAKE SHELTER AS SOON AS POSSIBLE. FREQUENT LIGHTNING...GUSTY WINDS... BRIEF HEAVY RAIN AND POSSIBLY HAIL WILL ACCOMPANY THESE STORMS. CONTINUE TO LISTEN TO THIS \STATION FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DN WCJIN-WYNE
Special weather statement, Jun 26, 3:25 PM MST, 1 hour 7 minutes before
WYZ015-262310- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 425 PM MDT TUE JUN 26 2001 ...STRONG THUNDERSTORMS CONTINUE OVER WESTERN NATRONA COUNTY... AT 425 PM MDT...RIVERTON DOPPLER RADAR SHOWED A CLUSTER OF STRONG THUNDERSTORMS OVER WESTERN NATRONA COUNTY...MOVING NORTH AT 15 TO 20 MPH. THESE STORMS WILL BE APPROACHING HIWAY 20/26 AND THE COMMUNITIES OF HILAND...HELLS HALF ACRE...POWDER RIVER AND NATRONA DURING THE NEXT HOUR. FREQUENT LIGHTNING...BRIEF HEAVY RAIN...GUSTY WINDS AND POSSIBLY HAIL WILL ACCOMPANY THESE STORMS. CONTINUE TO LISTEN TO THIS STATION FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DN WCJIN-WYNE
Special weather statement, Jun 26, 4:00 PM MST, 32 minutes before
WYZ002-004-005-008-009-013-015-026>028-270000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 500 PM MDT TUE JUN 26 2001 ...A TORNADO WATCH HAS BEEN ISSUED FOR PARTS OF CENTRAL AND NORTHERN WYOMING UNTIL 1100 PM MDT... ...STRONG THUNDERSTORMS OVER CENTRAL NATRONA AND NORTHEAST FREMONT COUNTY... AT 455 PM MDT...RIVERTON DOPPLER RADAR SHOWED STRONG THUNDERSTORMS OVER CENTRAL NATRONA COUNTY NEAR THE COMMUNITY OF NATRONA...AND OVER NORTHEAST FREMONT COUNTY NEAR BOYSEN RESERVOIR. THESE STORMS WERE MOVING NORTH AT BETWEEN 15 AND 20 MPH. FREQUENT LIGHTNING... GUSTY WINDS...BRIEF HEAVY RAIN...AND HAIL MAY ACCOMPANY THESE STORMS. THE AIRMASS OVER CENTRAL AND NORTHERN WYOMING IS VERY MOIST AND UNSTABLE THIS EVENING...AND THE STORMS OVER NATRONA AND NORTHEAST FREMONT COUNTY WILL LIKELY INTENSIFY AS THEY MOVE NORTH INTO NORTHERN WYOMING. THE COUNTIES IN THE TORNADO WATCH AREA INCLUDE EASTERN PARK...BIG HORN...HOT SPRINGS...WASHAKIE...JOHNSON AND NATRONA. CONTINUE TO LISTEN TO THIS STATION FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DN WCJIN-WYNW-WYNE
Local storm report, Jun 26, 4:20 PM MST, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RIVERTON, WY
520 PM MDT TUE JUN 26 2001
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0316 PM ALCOVA WY FUNNEL CLOUD
06/26/01 NATRONA REPORTED BY PUBLIC
0320 PM 5 N ALCOVA WY FUNNEL CLOUD
06/26/01 NATRONA
0322 PM 3 N ALCOVA WY FUNNEL CLOUD
06/26/01 NATRONA REPORTED BY SPOTTERS
0324 PM 3 NW ALCOVA WY FUNNEL CLOUD
06/26/01 NATRONA
0325 PM 3 N ALCOVA WY FUNNEL CLOUD
06/26/01 NATRONA REPORTED BY SPOTTERS
0343 PM 13-18 WSW CASPER WY FUNNEL CLOUD
06/26/01 NATRONA
0345 PM 40 SW CASPER WY .75 INCH HAIL
06/26/01 NATRONA
MLCThe radar
The national radar mosaic for the moment the first event began.
Event by event
1 funnel cloud. Local standard time, as filed.
What these are
- Funnel Cloud
- A rotating column of cloud extending from a thunderstorm that did not reach the ground.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Pennsylvania, June 26 to 30, 2001
- Heavy Rain in Washington, June 26 to 27, 2001
- Wildfire in Alaska, June 26 to 29, 2001
- Damaging Wind in Tennessee, June 26, 2001
- Damaging Winds in Kentucky, June 26, 2001
- Damaging Wind in Florida, June 26, 2001
- Tornado in Wyoming, June 26, 2001
- Flash Flooding and Hail in Montana, June 26, 2001
- Damaging Wind in Tennessee, June 26, 2001
- Hail in Texas, June 26, 2001
- Flash Flooding and Hail in Tennessee, June 26, 2001
- Damaging Wind in Louisiana, June 26, 2001
More
Every storm in Wyoming in 2001Every state in 2001This day in weather historyWarnings in Wyoming, June 2001
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5251645.