Alert archive / Wyoming / Flash Flood Watches in 2015
Flash Flood Watch 7, NWS Riverton, WY
NWS Riverton, WY issued this flash flood watch at Jun 6, 2015, 2:50 AM MDT for 9 counties in Wyoming. It took effect at Jun 6, 2015, 1:00 PM MDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Jun 6, 2015, 2:50 AM MDT (08:50 UTC)
- In effect from
- Jun 6, 2015, 1:00 PM MDT
- Expired
- Jun 6, 2015, 6:24 PM MDT
- In force
- 5 hr
- Issued by
- NWS Riverton, WY
- Flood severity
- None
Counties Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Sweetwater County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 47 km from the middle of the area, began a volume at 08:53 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, 8.8 hours before the alert went out and 44 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
- 588 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1572 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.3
What forecasters said that day
The local office's own words before this flash flood watch went out, 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 this flash flood watch went out at Jun 5, 10:48 PM MDT, 4 hours 2 minutes earlier.
Area forecast discussion, Jun 5, 10:48 PM MDT, 4 hours 2 minutes before
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</html>Hazardous weather outlook, Jun 5, 9:33 AM MDT, 17 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 933 AM MDT FRI JUN 5 2015 WYZ001>020-022>030-061545- YELLOWSTONE NATIONAL PARK-ABSAROKA MOUNTAINS-CODY FOOTHILLS- NORTH BIG HORN BASIN-SOUTHWEST BIG HORN BASIN- SOUTHEAST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER WIND RIVER BASIN-WIND RIVER BASIN-LANDER FOOTHILLS- GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN-STAR VALLEY- SALT RIVER AND WYOMING RANGES-UPPER GREEN RIVER BASIN FOOTHILLS- UPPER GREEN RIVER BASIN-SOUTH LINCOLN COUNTY- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- 933 AM MDT FRI JUN 5 2015 ...FLASH FLOOD WATCH FOR MUCH OF CENTRAL WYOMING TODAY FROM 2 PM THROUGH MIDNIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND WESTERN WYOMING. .DAY ONE...TODAY AND TONIGHT SCATTERED AFTERNOON AND EVENING THUNDERSTORMS. SOME STORMS EAST OF THE DIVIDE ACROSS CENTRAL WYOMING MAY BECOME SEVERE WITH DAMAGING WIND AND LARGE HAIL AND FLASH FLOODING. THE REST OF THE AREA WILL STILL SEE THE THREAT OF STRONG THUNDERSTORMS WITH SMALL HAIL...GUSTY WIND AND HEAVY RAIN. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY SATURDAY THROUGH SUNDAY...ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS. SOME STORMS MAY PRODUCE GUSTY WIND...SMALL HAIL AND HEAVY RAIN. MONDAY AND TUESDAY...ISOLATED THUNDERSTORMS POSSIBLE...MAINLY OVER THE MOUNTAINS AND ADJACENT FOOTHILLS. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT HAIL SIZES...WIND SPEEDS OVER 45 MPH...AND ANY FLOODING. THANK YOU. TEAM RIVERTON
In the hours before
Special weather statement, Jun 5, 9:14 PM MDT, 5 hours 36 minutes before
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</html>Special weather statement, Jun 5, 9:38 PM MDT, 5 hours 12 minutes before
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</html>Special weather statement, Jun 5, 9:40 PM MDT, 5 hours 10 minutes before
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</html>Special weather statement, Jun 5, 10:04 PM MDT, 4 hours 46 minutes before
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</html>Local storm report, Jun 5, 10:36 PM MDT, 4 hours 14 minutes before
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</html>Special weather statement, Jun 5, 11:10 PM MDT, 3 hours 40 minutes before
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</html>The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 6:02 PM MDT | Special Weather Statement | RIW | Washakie | 43 min |
| Jun 5, 6:33 PM MDT | Severe Thunderstorm Warning | RIW | Big Horn, Washakie | 42 min |
| Jun 5, 7:04 PM MDT | Special Weather Statement | RIW | Hot Springs | 41 min |
| Jun 5, 7:20 PM MDT | Severe Thunderstorm Warning | RIW | Hot Springs, Park | 40 min |
| Jun 5, 7:24 PM MDT | Flash Flood Warning | RIW | Big Horn | 3 hr |
| Jun 5, 7:25 PM MDT | Special Weather Statement | RIW | Fremont | 50 min |
| Jun 5, 7:34 PM MDT | Special Weather Statement | RIW | Big Horn | 41 min |
| Jun 5, 7:46 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 44 min |
| Jun 5, 8:10 PM MDT | Special Weather Statement | RIW | Hot Springs | 50 min |
| Jun 5, 8:16 PM MDT | Special Weather Statement | RIW | Park | 44 min |
| Jun 5, 8:26 PM MDT | Areal Flood Warning | RIW | Johnson | 12 hr |
| Jun 5, 8:30 PM MDT | Special Weather Statement | RIW | Big Horn | 45 min |
| Jun 5, 8:31 PM MDT | Areal Flood Advisory | RIW | Hot Springs, Park | 3 hr |
| Jun 5, 8:37 PM MDT | Special Weather Statement | RIW | Fremont | 53 min |
| Jun 5, 8:52 PM MDT | Severe Thunderstorm Warning | RIW | Fremont | 38 min |
| Jun 5, 9:14 PM MDT | Special Weather Statement | RIW | Hot Springs | 46 min |
| Jun 5, 9:38 PM MDT | Special Weather Statement | RIW | Big Horn | 52 min |
| Jun 5, 9:40 PM MDT | Special Weather Statement | RIW | Fremont | 50 min |
| Jun 5, 10:04 PM MDT | Special Weather Statement | RIW | Hot Springs | 41 min |
| Jun 5, 11:10 PM MDT | Special Weather Statement | RIW | Big Horn | 50 min |
| Jun 6, 12:01 AM MDT | Areal Flood Warning | RIW | Natrona | 9 hr |
| Jun 6, 11:29 AM MDT | Special Weather Statement | RIW | Fremont | 46 min |
| Jun 6, 12:13 PM MDT | Areal Flood Warning | RIW | Natrona | 6 hr |
| Jun 6, 1:35 PM MDT | Special Weather Statement | RIW | Johnson | 40 min |
| Jun 6, 2:23 PM MDT | Special Weather Statement | RIW | Johnson | 37 min |
| Jun 6, 4:58 PM MDT | Special Weather Statement | RIW | 47 min |
Nearby
Flash Flood Watches in Wyoming, 2015Every flash flood watch 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.