Alert archive / Wyoming / Flood Watches in 2017

Flood Watch 3, NWS Riverton, WY

May 16, 20177 counties in Wyoming

NWS Riverton, WY issued this flood watch at May 16, 2017, 9:13 AM MDT for 7 counties in Wyoming. It took effect at May 17, 2017, 6:00 PM MDT. It was in force for 21 hr.

The area

The counties it named.

The facts

Issued
May 16, 2017, 9:13 AM MDT (15:13 UTC)
In effect from
May 17, 2017, 6:00 PM MDT
Expired
May 18, 2017, 3:06 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, Washakie County, WY

The radar

The Riverton/Lander radar (KRIW), 93 km from the middle of the area, began a volume at 15:15 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 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 flood watch went out at May 16, 1:57 AM MDT, 7 hours 16 minutes earlier.

Area forecast discussion, May 16, 1:57 AM MDT, 7 hours 16 minutes before
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Hazardous weather outlook, May 16, 2:02 AM MDT, 7 hours 11 minutes before
Hazardous Weather Outlook
National Weather Service Riverton WY
202 AM MDT Tue May 16 2017

WYZ001>020-022>030-171215-
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-
202 AM MDT Tue May 16 2017

...Winter Storm Watch for the Absaroka and Bighorn Mountains
beginning Wednesday morning and continuing through Thursday...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Showers and isolated thunderstorms across portions of southwestern,
central, northern and northeastern Wyoming today and this evening.
Increasing chances for significant snowfall across the western
mountains after midnight tonight.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Wednesday through Thursday night...Widespread moderate to locally
heavy rain and mountain snow possible across portions of western
and northern Wyoming. Heavy snow possible over the Absaroka and
Bighorn mountains. Snow possible across the lower elevations east
of the Divide Thursday and Thursday night. Additionally,
significant rainfall amounts could elevate flooding concerns where
many streams and some main stem rivers will already be at
bankfull levels.

Sunday and Monday...Isolated to locally scattered thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotter are urged to report wind gusts past 45 mph, hail, snowfall
and any flooding. Thank you.

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 6:16 PM MDTSpecial Weather StatementRIWJohnson14 min
May 16, 12:56 AM MDTWinter Storm WatchRIWBig Horn, Fremont, Hot Springs, Johnson, Natrona, Park and 1 more23 hr
May 16, 12:47 PM MDTSpecial Weather StatementRIWFremont28 min
May 16, 1:24 PM MDTSpecial Weather StatementRIWHot Springs36 min
May 16, 1:47 PM MDTSpecial Weather StatementRIWFremont28 min
May 16, 2:03 PM MDTSpecial Weather StatementRIWHot Springs27 min
May 16, 2:04 PM MDTSpecial Weather StatementRIWFremont26 min
May 16, 2:35 PM MDTSpecial Weather StatementRIWFremont25 min
May 16, 2:37 PM MDTSpecial Weather StatementRIWNatrona23 min

Nearby

Flood Watches in Wyoming, 2017Every flood watch in 2017

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.