Alert archive / Wyoming / Flash Flood Watches in 2015

Flash Flood Watch 8, NWS Riverton, WY

June 9, 20158 counties in Wyoming

NWS Riverton, WY issued this flash flood watch at Jun 9, 2015, 2:40 PM MDT for 8 counties in Wyoming. It took effect at Jun 10, 2015, 3:00 PM MDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued: Jun 9, 2015, 2:40 PM MDT (20:40 UTC)
In effect from: Jun 10, 2015, 3:00 PM MDT
Expired: Jun 11, 2015, 12:00 PM MDT
In force: 21 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, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 72 km from the middle of the area, began a volume at 20:41 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.

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 9, 2:38 PM MDT, 2 minutes earlier.

Area forecast discussion, Jun 9, 2:38 PM MDT, 2 minutes before

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Hazardous weather outlook, Jun 9, 4:00 AM MDT, 10 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RIVERTON WY
400 AM MDT TUE JUN 9 2015

WYZ001>020-022>030-101200-
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-
400 AM MDT TUE JUN 9 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND WESTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

ISOLATED AFTERNOON AND EVENING THUNDERSTORMS...MAINLY OVER THE
MOUNTAINS AND ADJACENT FOOTHILLS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

WEDNESDAY AND THURSDAY...A BETTER CHANCE OF SHOWERS AND
THUNDERSTORMS...HEAVY RAIN THE MAIN THREAT.

FRIDAY...ISOLATED THUNDERSTORMS OVER THE WESTERN MOUNTAINS AND IN
THE FAR SOUTH.

SATURDAY THROUGH MONDAY...ISOLATED THUNDERSTORMS EACH DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ACTIVATION WILL NOT BE NEEDED TODAY.

TEAM RIVERTON

In the hours before

Special weather statement, Jun 9, 12:26 PM MDT, 2 hours 14 minutes before

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Special weather statement, Jun 9, 12:40 PM MDT, 2 hours before

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Special weather statement, Jun 9, 1:13 PM MDT, 1 hour 27 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 10:55 PM MDT	Areal Flood Warning	RIW	Park	33 hr
Jun 9, 12:26 PM MDT	Special Weather Statement	RIW		49 min
Jun 9, 1:13 PM MDT	Special Weather Statement	RIW		47 min
Jun 9, 1:26 PM MDT	Areal Flood Advisory	RIW	Natrona	3 hr
Jun 9, 2:00 PM MDT	Areal Flood Advisory	RIW	Big Horn, Washakie	3 hr
Jun 9, 2:18 PM MDT	Areal Flood Advisory	RIW	Big Horn, Washakie	24 hr
Jun 9, 2:46 PM MDT	Special Weather Statement	RIW	Hot Springs	44 min
Jun 9, 2:49 PM MDT	Special Weather Statement	RIW	Teton	41 min
Jun 9, 4:10 PM MDT	Special Weather Statement	RIW	Natrona	50 min
Jun 9, 4:28 PM MDT	Special Weather Statement	RIW	Teton	47 min
Jun 9, 4:47 PM MDT	Special Weather Statement	RIW	Natrona	43 min
Jun 9, 4:56 PM MDT	Severe Thunderstorm Warning	RIW	Natrona	49 min
Jun 9, 5:27 PM MDT	Flash Flood Warning	RIW	Natrona	3 hr

Nearby

Flash Flood Watches in Wyoming, 2015 Every 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; radar from the NEXRAD Level II archive.