Alert archive / Wyoming / Tornado Warnings in 2003

Tornado Warning 3, NWS Riverton, WY

June 28, 2003Fremont County, Wyoming

NWS Riverton, WY issued this tornado warning at Jun 28, 2003, 5:43 PM MDT for Fremont County, Wyoming. It was in force for 47 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 28, 2003, 5:43 PM MDT (23:43 UTC)
Expired: Jun 28, 2003, 6:30 PM MDT
In force: 47 min
Issued by: NWS Riverton, WY
Area: Counties, with a storm outline in the text

County Fremont County, WY

The radar

The Riverton/Lander radar (KRIW), 28 km from the middle of the area, began a volume at 23:46 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, 11.7 hours before the alert went out and 33 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: 2075 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 53 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 282343
TORRIW
WYC013-290030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
541 PM MDT SAT JUN 28 2003

THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL FREMONT COUNTY IN CENTRAL WYOMING

* UNTIL 630 PM MDT

* AT 541 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO 6 MILES SOUTHWEST OF ETHETE...
  OR ABOUT 6 MILES SOUTHEAST OF FORT WASHAKIE...MOVING SOUTHEAST AT
  25 MPH.

* THE TORNADO IS EXPECTED TO BE...
  8 MILES SOUTH OF ETHETE AROUND 540 PM MDT
  NEAR LANDER AROUND 555 PM MDT

THIS STORM HAS A HISTORY OF PRODUCING GOLFBALL SIZED HAIL AND AN 
EARLIER REPORT OF A FUNNEL CLOUD.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY STURDY BUILDING.
AS A LAST RESORT...SEEK REFUGE IN A CULVERT...DITCH OR LOW SPOT AND
COVER YOUR HEAD WITH YOUR HANDS. BEWARE OF THE THREAT OF RISING
WATER.

IF YOU ARE NEAR THE PATH OF THIS TORNADO...TAKE COVER IN AN INTERIOR
ROOM ON THE LOWEST FLOOR. PROTECT YOUR HEAD AND BODY FROM FLYING
DEBRIS.

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.

IN ADDITION TO THE THREAT OF A TORNADO...DAMAGING HAIL AND WIND CAN
BE EXPECTED. GO TO A SAFE PLACE NOW

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

LAT...LON 4304 10877 4292 10895 4260 10861 4274 10838

$$

SKRBAC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 2:56 PM MDT	Severe Thunderstorm Warning	RIW	Johnson	49 min
Jun 28, 3:26 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	64 min
Jun 28, 3:34 PM MDT	Flash Flood Warning	RIW	Fremont	4 hr
Jun 28, 4:34 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	56 min
Jun 28, 4:53 PM MDT	Tornado Warning	RIW	Fremont	52 min

Nearby

Tornado Warnings in Wyoming, 2003 Every tornado warning in 2003 Tornadoes in 2003

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.