Alert archive / Wyoming / Flash Flood Warnings in 2004
Flash Flood Warning 2, NWS Riverton, WY
NWS Riverton, WY issued this flash flood warning at Jun 27, 2004, 6:55 PM MDT for Sublette County, Wyoming. It was in force for 3 hr. 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 27, 2004, 6:55 PM MDT (00:55 UTC)
- Expired
- Jun 27, 2004, 10:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Riverton, WY
- Area
- Counties, with a storm outline in the text
County Sublette County, WY
The radar
The Riverton/Lander radar (KRIW), 98 km from the middle of the area, began a volume at 00:58 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 00:00Z, 0.9 hours before the alert went out and 104 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
- 60 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 1564 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS55 KRIW 280059
FFWRIW
WYC035-280400-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
655 PM MDT SUN JUN 27 2004
THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL SUBLETTE COUNTY IN WEST CENTRAL WYOMING
* UNTIL 1000 PM MDT
* AT 655 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
MODERATE TO HEAVY RAINFALL RETURNING TO AN AREA FROM AROUND BOULDER
...EXTENDING NORTH INTO THE WEST SLOPES OF THE WIND RIVER
MOUNTAINS. RADAR ESTIMATES INDICATED SOME LOCAL RAINFALL AMOUNTS
LIKELY EXCEEDING 2 INCHES.
* LOCATIONS WITH THE GREATEST THREAT FOR FLASH FLOODING CONTINUE TO
BE FROM THE BOULDER AREA...EXTENDING NORTH INTO THE WIND RIVER
MOUNTAINS.
THIS IS AN EXTENSION TO THE PREVIOUS WARNING.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL COULD CAUSE FLOODING OF
STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES...AS WELL AS LOW LYING
AREAS ALONG THE BANKS OF STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.
REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT
1-800-211-1448.
LAT...LON 4281 10985 4257 10965 4277 10926 4301 10957
4317 10970
$$
FRIEDERS3 follow-up statements
000
WGUS75 KRIW 280157
FFSRIW
WYC035-280400-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
755 PM MDT SUN JUN 27 2004
...A FLASH FLOOD WARNING CONTINUES FOR CENTRAL SUBLETTE COUNTY UNTIL
1000 PM MDT...
AT 730 PM MDT...A TRAINED WEATHER SPOTTER REPORTED HEAVY RAINFALL
STILL FALLING IN THE BOULDER AREA. DOPPLER RADAR INDICATED THE
HEAVIEST RAINS PERSISTING SOUTHEAST OF PINEDALE...IN AN AREA FROM
BOULDER TO BIG SANDY AND INTO THE MOUNTAINS. THESE MODERATE TO HEAVY
RAINS ARE EXPECTED TO TAPER OFF AROUND 9 PM.
EXCESSIVE RUNOFF FROM THIS HEAVY RAINFALL COULD CAUSE FLOODING OF
STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES...AS WELL AS LOW LYING
AREAS ALONG THE BANKS OF STREAMS.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT
1-800-211-1448.
LAT...LON 4281 10985 4257 10965 4277 10926 4301 10957
4317 10970
$$
FRIEDERS000
WGUS75 KRIW 280302
FFSRIW
WYC035-280400-
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
900 PM MDT SUN JUN 27 2004
...A FLASH FLOOD WARNING CONTINUES FOR CENTRAL SUBLETTE COUNTY UNTIL
1000 PM MDT...
AT 847 PM MDT...A TRAINED WEATHER SPOTTER REPORTED THAT THE HEAVY
RAINFALL HAD TAPERED OFF IN THE BOULDER AREA. 1.77 INCHES OF
RAINFALL WAS REPORTED BY THIS OBSERVER THROUGH EARLY THIS EVENING.
ITS LIKELY THAT MANY AREAS EASILY EXCEEDED 2 INCHES. GIVEN THE
MAGNITUDE OF THE RAINFALL IN AREAS FROM PINEDALE TO BOULDER AND INTO
THE MOUNTAINS...KEEP AN EYE OUT FOR CONTINUED RISING STREAMS. IF
TRAVELING IN THE AREA OVERNIGHT...BE AWARE OF THE POTENTIAL FOR A
FEW ROADS POTENTIALLY WASHED OUT.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN RIVERTON AT
1-800-211-1448.
LAT...LON 4281 10985 4257 10965 4277 10926 4301 10957
4317 10970
$$
FRIEDERS000 WGUS75 KRIW 280344 FFSRIW WYC035-280400- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE RIVERTON WY 943 PM MDT SUN JUN 27 2004 ...THE FLASH FLOOD WARNING FOR CENTRAL SUBLETTE COUNTY WILL BE ALLOWED TO EXPIRE AT 10 PM... THE RAINFALL HAS ENDED ACROSS THE WARNED AREA AND NO ADDITIONAL REPORTS OF FLOODING HAVE BEEN RECEIVED. THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE. $$ FRIEDERS
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 1:35 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 40 min |
Nearby
Flash Flood Warnings in Wyoming, 2004Every flash flood warning in 2004
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.