Alert archive / Wyoming / Tornado Warnings in 2005

Tornado Warning 3, NWS Riverton, WY

June 1, 2005Big Horn County, Wyoming

NWS Riverton, WY issued this tornado warning at Jun 1, 2005, 1:45 PM MDT for Big Horn County, Wyoming. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 1, 2005, 1:45 PM MDT (19:45 UTC)
Expired: Jun 1, 2005, 2:30 PM MDT
In force: 45 min
Issued by: NWS Riverton, WY
Area: Counties, with a storm outline in the text

County Big Horn County, WY

The radar

The Billings radar (KBLX), 150 km from the middle of the area, began a volume at 19:45 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.

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 7.8 hours before the alert went out and 162 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1659 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WFUS55 KRIW 011945
TORRIW
WYC003-012030-
/O.NEW.KRIW.TO.W.0003.050601T1945Z-050601T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
145 PM MDT WED JUN 1 2005

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BIG HORN COUNTY IN NORTH CENTRAL WYOMING
  THIS INCLUDES THE CITIES OF...GREYBULL...BASIN

* UNTIL 230 PM MDT

* AT 141 PM MDT...A TRAINED WEATHER SPOTTER REPORTED A TORNADO NEAR
  HWY 14/16/20 MILE MARKER 90...OR ABOUT 15 MILES WEST OF GREYBULL...
  MOVING EAST AT 10 MPH.

* THE TORNADO EXPECTED TO BE NEAR...
  STATE HWY 30 MILE MARKER 110 BY 210 PM MDT
  HWY 310/789 MILE MARKER 215 BY 215 PM MDT
  HWY JCT 310 AND 14 BY 230 PM MDT

MOVE INTO A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. ABANDON MOBILE HOMES AND VEHICLES.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4461 10846 4443 10848 4436 10801 4460 10797

$$

MCDONALD

1 follow-up statement

000 
WWUS55 KRIW 011956
SVSRIW

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
156 PM MDT WED JUN 1 2005

WYC003-012030-
/O.CON.KRIW.TO.W.0003.000000T0000Z-050601T2030Z/
BIG HORN WY-
156 PM MDT WED JUN 1 2005

...A TORNADO WARNING CONTINUES FOR CENTRAL BIG HORN COUNTY UNTIL 230
PM MDT...

AT 151 PM MDT...A TRAINED WEATHER SPOTTER REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR HWY 14/16/20 MILE MARKER 90...OR ABOUT 13
MILES WEST OF GREYBULL...MOVING EAST AT 10 MPH.

THE TORNADO WILL BE NEAR...
  HWY 310/789 MILE MARKER 215 BY 220 PM MDT
  HWY JCT 310 AND 14 BY 230 PM MDT

MOVE INTO A BASEMENT OR INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY
BUILDING. ABANDON MOBILE HOMES AND VEHICLES.

THIS IS A DANGEROUS STORM ACT QUICKLY. IF YOU ARE IN THE PATH OF
THIS TORNADO MOVE TO THE LOWEST FLOOR OF A STURDY BUILDING.

REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE OFFICE IN
RIVERTON AT 1-800-211-1448.

LAT...LON 4462 10839 4442 10835 4437 10794 4466 10794

$$

MCDONALD

The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 1, 12:57 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn, Park	63 min
Jun 1, 1:31 PM MDT	Severe Thunderstorm Warning	RIW	Big Horn	46 min
Jun 1, 1:39 PM MDT	Tornado Warning	RIW	Big Horn	28 min
Jun 1, 1:54 PM MDT	Tornado Warning	RIW	Big Horn, Washakie	51 min

Nearby

Tornado Warnings in Wyoming, 2005 Every tornado warning in 2005 Tornadoes in 2005

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; radar from the NEXRAD Level II archive.