Alert archive / Wyoming / Flash Flood Warnings in 2015
Flash Flood Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this flash flood warning at Jun 3, 2015, 10:53 PM MDT for Johnson County, Natrona County, Wyoming. It was in force for 5 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 3, 2015, 10:53 PM MDT (04:53 UTC)
- Expired
- Jun 4, 2015, 3:45 AM MDT
- In force
- 5 hr
- Issued by
- NWS Riverton, WY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Johnson County, WY, Natrona County, WY
The radar
The Riverton/Lander radar (KRIW), 189 km from the middle of the area, began a volume at 04:56 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, 4.9 hours before the alert went out and 183 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
- 141 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 2471 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 226 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
110
WGUS55 KRIW 040453
FFWRIW
WYC019-025-040945-
/O.NEW.KRIW.FF.W.0013.150604T0453Z-150604T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE RIVERTON WY
1053 PM MDT WED JUN 3 2015
THE NATIONAL WEATHER SERVICE IN RIW/RIVERTON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN NATRONA COUNTY IN CENTRAL WYOMING...
SOUTHEASTERN JOHNSON COUNTY IN NORTH CENTRAL WYOMING...
* UNTIL 345 AM MDT
* AT 1052 PM MDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS NORTHEAST NATRONA AND SOUTHEAST JOHNSON
COUNTIES. ONE TO TWO INCHES OF RAIN HAS ALREADY FALLEN. FLASH
FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MIDWEST...EDGERTON...LINCH...ANTELOPE HILLS...TEAPOT ROCK...FORT
RENO HISTORICAL SITE...SUSSEX...NATRONA...SALT CREEK COUNTRY CLUB
AND MIDWEST SCHOOL.
#
THIS INCLUDES INTERSTATE 25 BETWEEN MILE MARKERS 201 AND 245.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 4349 10607 4303 10609 4303 10691 4399 10634
4401 10601 4350 10602
$$
MURRELL4 follow-up statements
697
WGUS75 KRIW 040519
FFSRIW
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1119 PM MDT WED JUN 3 2015
WYC019-025-040945-
/O.CON.KRIW.FF.W.0013.000000T0000Z-150604T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NATRONA-JOHNSON-
1119 PM MDT WED JUN 3 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM MDT FOR
NORTHEASTERN NATRONA AND SOUTHEASTERN JOHNSON COUNTIES...
AT 1108 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS EXTREME SOUTHEAST JOHNSON...AND NORTHEAST NATRONA
COUNTIES. WEATHER SPOTTERS IN MIDWEST REPORTED BETWEEN 1 AND 1.5
INCHES OF RAIN FELL IN ONLY ABOUT 30 TO 45 MINUTES. DOPPLER RADAR
ALSO INDICATED AREAS OF 2 TO 3 INCHES OF RAIN HAS FALLEN IN EXTREME
SOUTHEAST JOHNSON NEAR SUSSEX.
AREAS OF GREATEST CONCERN FOR FLOODING IS AROUND SUSSEX...MIDWEST
AND EDGERTON AREAS...AS WELL AS ALONG THE MEADOW CREEK...SALT CREEK
AND DUGOUT CREEK DRAINAGES.
ADDITIONAL RAINFALL AMOUNTS OF A HALF AN INCH COULD OCCUR.
THIS INCLUDES INTERSTATE 25 BETWEEN MILE MARKERS 201 AND 245.
THIS FLASH FLOOD WARNING REPLACED THE FLOOD ADVISORY THAT WAS IN
EFFECT UNTIL 130 AM FOR THE SAME AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4349 10607 4303 10609 4303 10691 4399 10634
4401 10601 4350 10602
$$
MURRELL124
WGUS75 KRIW 040604
FFSRIW
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
1204 AM MDT THU JUN 4 2015
WYC019-025-040945-
/O.CON.KRIW.FF.W.0013.000000T0000Z-150604T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NATRONA-JOHNSON-
1204 AM MDT THU JUN 4 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM MDT FOR
NORTHEASTERN NATRONA AND SOUTHEASTERN JOHNSON COUNTIES...
AT 1145 PM MDT...PUBLIC REPORTED BETWEEN 1 AND 1.5 INCHES OF RAIN
FELL IN THE MIDWEST AND EDGERTON AREAS BETWEEN 1015 PM AND 1115
PM...WITH THE BULK OF THE RAINFALL OCCURRING IN ABOUT 20 MINUTES.
DOPPLER RADAR ESTIMATES THAT UP TO 3 INCHES OF RAIN COULD HAVE
FALLEN IN ISOLATED AREAS ACROSS EXTREME SOUTHEAST JOHNSON AND
EXTREME NORTHEAST NATRONA COUNTIES.
THE HEAVY RAINFALL HAS SHIFTED EAST INTO CAMPBELL AND CONVERSE
COUNTIES...WITH ADDITIONAL RAINFALL OF ONLY LESS THAN THAN A TENTH
OF A INCH. HOWEVER...SMALL STREAMS WILL CONTINUE TO RISE QUICKLY
OVER THE NEXT COUPLE OF HOURS...AND FLASH FLOODING REMAINS LIKELY
ESPECIALLY IN LOW AREAS OR NORMALLY DRY WASHES.
AREAS OF GREATEST CONCERN FOR FLOODING IS AROUND SUSSEX...MIDWEST
AND EDGERTON AREAS...AS WELL AS ALONG BOTHWELL DRAW...CASTLE
CREEK...MEADOW CREEK...SALT CREEK AND DUGOUT CREEK DRAINAGES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4349 10607 4303 10609 4304 10639 4338 10649
4356 10651 4399 10634 4401 10601 4350 10602
$$
MURRELL097
WGUS75 KRIW 040840
FFSRIW
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
240 AM MDT THU JUN 4 2015
WYC019-025-040945-
/O.CON.KRIW.FF.W.0013.000000T0000Z-150604T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NATRONA-JOHNSON-
240 AM MDT THU JUN 4 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 AM MDT FOR
NORTHEASTERN NATRONA AND SOUTHEASTERN JOHNSON COUNTIES...
AT 230 AM MDT...DOPPLER RADAR INDICATED THE RAIN HAS ENDED OVER
SOUTHEAST JOHNSON AND NORTHEAST NATRONA COUNTIES. HOWEVER SMALL
STREAMS WILL CONTINUE TO RUN HIGH WITH THE POSSIBLITY OF CONTINUED
RISES AND FLOODING IN A FEW LOCATIONS. AREAS OF GREATEST CONCERN
AREAS OF GREATEST CONCERN FOR FLOODING IS ALONG THE BOTHWELL
DRAW...CASTLE CREEK...MEADOW CREEK...SALT CREEK AND DUGOUT CREEK
DRAINAGES.
THE POWDER RIVER AT SUSSEX ROSE 4 FEET SINCE 9 PM...AND AT 2 AM WAS
AT 7 FEET. FLOOD STAGE AT THIS LOCATION IS 11 FEET.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.
&&
LAT...LON 4329 10608 4322 10633 4337 10635 4345 10633
4359 10646 4399 10634 4401 10601 4350 10602
4349 10607
$$
MURRELL591
WGUS75 KRIW 040938
FFSRIW
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE RIVERTON WY
338 AM MDT THU JUN 4 2015
WYC019-025-040947-
/O.EXP.KRIW.FF.W.0013.000000T0000Z-150604T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NATRONA-JOHNSON-
338 AM MDT THU JUN 4 2015
...THE FLASH FLOOD WARNING FOR NORTHEASTERN NATRONA AND SOUTHEASTERN
JOHNSON COUNTIES WILL EXPIRE AT 345 AM MDT...
FLOOD WATERS ACROSS NORTHEAST NATRONA AND SOUTHEAST JOHNSON COUNTIES
ARE RECEDING...AND ARE NO LONGER EXPECTED TO POSE A THREAT TO LIFE
OR PROPERTY.
LAT...LON 4329 10608 4322 10633 4337 10635 4345 10633
4359 10646 4399 10634 4401 10601 4350 10602
4349 10607
$$
MURRELLThe office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 6:06 PM MDT | Special Weather Statement | RIW | Fremont | 39 min |
| Jun 3, 6:20 PM MDT | Flash Flood Warning | RIW | Washakie | 3 hr |
| Jun 3, 6:26 PM MDT | Special Weather Statement | RIW | Johnson | 49 min |
| Jun 3, 6:29 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 46 min |
| Jun 3, 6:33 PM MDT | Special Weather Statement | RIW | Fremont | 42 min |
| Jun 3, 6:34 PM MDT | Special Weather Statement | RIW | Washakie | 41 min |
| Jun 3, 6:37 PM MDT | Special Weather Statement | RIW | Hot Springs | 38 min |
| Jun 3, 6:41 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 49 min |
| Jun 3, 6:49 PM MDT | Severe Thunderstorm Warning | RIW | Fremont, Hot Springs | 41 min |
| Jun 3, 7:10 PM MDT | Flash Flood Warning | RIW | Johnson | 3 hr |
| Jun 3, 7:12 PM MDT | Severe Thunderstorm Warning | RIW | Johnson | 63 min |
| Jun 3, 7:15 PM MDT | Special Weather Statement | RIW | Washakie | 45 min |
| Jun 3, 7:41 PM MDT | Flash Flood Warning | RIW | Johnson | 3 hr |
| Jun 3, 7:45 PM MDT | Special Weather Statement | RIW | Johnson | 45 min |
| Jun 3, 7:49 PM MDT | Special Weather Statement | RIW | Fremont | 41 min |
| Jun 3, 7:54 PM MDT | Special Weather Statement | RIW | 51 min | |
| Jun 3, 8:05 PM MDT | Special Weather Statement | RIW | Johnson | 40 min |
| Jun 3, 8:15 PM MDT | Special Weather Statement | RIW | 45 min | |
| Jun 3, 8:17 PM MDT | Special Weather Statement | RIW | Washakie | 43 min |
| Jun 3, 8:45 PM MDT | Special Weather Statement | RIW | 45 min | |
| Jun 3, 9:00 PM MDT | Special Weather Statement | RIW | Natrona | 45 min |
| Jun 3, 9:18 PM MDT | Special Weather Statement | RIW | Fremont | 42 min |
| Jun 3, 9:51 PM MDT | Special Weather Statement | RIW | 39 min | |
| Jun 3, 10:20 PM MDT | Severe Thunderstorm Warning | RIW | Johnson, Natrona | 40 min |
| Jun 3, 10:22 PM MDT | Areal Flood Warning | RIW | Johnson | 12 hr |
| Jun 3, 10:34 PM MDT | Areal Flood Advisory | RIW | Johnson, Natrona | 3 hr |
| Jun 3, 11:00 PM MDT | Special Weather Statement | RIW | Natrona | 45 min |
| Jun 3, 11:05 PM MDT | Special Weather Statement | RIW | 40 min | |
| Jun 4, 2:47 AM MDT | Flash Flood Watch | RIW | Big Horn, Fremont, Johnson, Natrona, Washakie | 21 hr |
| Jun 4, 10:53 AM MDT | Areal Flood Warning | RIW | Johnson | 24 hr |
| Jun 4, 12:34 PM MDT | Flash Flood Watch | RIW | Big Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 1 more | 35 hr |
| Jun 4, 3:19 PM MDT | Special Weather Statement | RIW | 41 min | |
| Jun 4, 3:51 PM MDT | Special Weather Statement | RIW | Hot Springs | 39 min |
| Jun 4, 4:31 PM MDT | Special Weather Statement | RIW | Hot Springs | 29 min |
| Jun 4, 5:01 PM MDT | Special Weather Statement | RIW | Hot Springs | 29 min |
Nearby
Flash Flood Warnings in Wyoming, 2015Every flash flood warning in 2015
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.