Alert archive / Wyoming / River Flood Warnings in 2019

River Flood Warning 1, NWS Cheyenne, WY

May 27, 2019Converse County, Wyoming

NWS Cheyenne, WY issued this river flood warning at May 27, 2019, 9:41 AM MDT for Converse County, Wyoming. It took effect at May 28, 2019, 4:09 PM MDT. It was in force for .

The area

The counties it named.

The facts

Issued
May 27, 2019, 9:41 AM MDT (15:41 UTC)
In effect from
May 28, 2019, 4:09 PM MDT
Expired
May 27, 2019, 9:55 PM MDT
In force
Issued by
NWS Cheyenne, WY
Area
Storm-based polygon
Flood severity
Moderate

County Converse County, WY

The radar

The Cheyenne radar (KCYS), 210 km from the middle of the area, began a volume at 15:44 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 river

Written for the forecast point North Platte River near Orin (ORIW4).

Action stage
7 ft
Minor stage
8 ft
Moderate stage
9 ft
Major stage
10 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06652000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this river flood warning went out at May 27, 6:05 AM MDT, 3 hours 36 minutes earlier.

Area forecast discussion, May 27, 6:05 AM MDT, 3 hours 36 minutes before
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Hazardous weather outlook, May 27, 5:07 AM MDT, 4 hours 34 minutes before
Hazardous Weather Outlook
National Weather Service Cheyenne WY
507 AM MDT Mon May 27 2019

WYZ103>106-109>117-281115-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
Central Carbon County-North Snowy Range Foothills-
Southwest Carbon County-Sierra Madre Range-
Upper North Platte River Basin-Snowy Range-Laramie Valley-
South Laramie Range-South Laramie Range Foothills-
507 AM MDT Mon May 27 2019

This hazardous weather outlook is for portions of south central
Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Scattered to numerous thunderstorms will again impact areas west
of the Laramie Range later this morning through the evening hours.
Some of these storms could become strong with nickel sized hail
and downburst winds to 50 mph.

Snow levels are expected to drop this evening to around 8000 feet
bringing a mix of rain and snow to lower elevations and heavy snow
to the Snowy and Sierra Madre Ranges. Winter Storm Warnings are in
effect for the Snowy and Sierra Madre Ranges where 12 to 20
inches of wet heavy snow are expected to fall.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Heavy snow will continue Tuesday in the SNowy and Sierra Madre
Ranges. Winter Storm Warnings remain in effect through Wednesday
morning.

.Spotter information statement...

Spotter activation will not be needed. However...please report any
observed hail to the National Weather Service in Cheyenne.

NEZ002-095-WYZ101-102-107-281115-
Dawes-North Sioux-Converse County Lower Elevations-
Niobrara County-East Platte County-
507 AM MDT Mon May 27 2019

This hazardous weather outlook is for portions of western
Nebraska...east central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Thunderstorms are expected this afternoon and evening with
isolated severe thunderstorms. Main threats from the severe
thunderstorms will be damaging winds and large hail.

A Flood Advisory continues until 900 PM this evening for the
White River in north central Dawes County in the northern Nebraska
Panhandle.

A Flood Watch is in effect through Tuesday afternoon. Scattered
thunderstorms will develop, with some storms possibly producing
locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

The Flood Watch continues into Tuesday as heavy rainfall
continues to impact the area.

.Spotter information statement...

Spotter activation will not be needed. However...please relay any
observations of flooding to the National Weather Service in
Cheyenne.

NEZ003-019>021-054-055-096-WYZ108-118-119-281115-
Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
South Sioux-Goshen County-Central Laramie County-
East Laramie County-
507 AM MDT Mon May 27 2019

This hazardous weather outlook is for portions of western
Nebraska and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Better chances for strong to severe thunderstorms are possible
this afternoon and evening through around 9 PM this evening.
Threats include large hail, damaging winds, heavy rainfall and a
few tornadoes. The main threat will be along and south of a
Wheatland to Scottsbluff to Alliance line.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Heavy rain will continue Tuesday through Wednesday morning with
increased chances for flooding and flash flooding.

.Spotter information statement...

Spotter activation may be needed for the southeast Wyoming Plains
after 2 PM today and for the Nebraska Panhandle after 5PM. Severe
thunderstorm threat looks to end after 9 PM this evening.

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 6:12 PM MDTSevere Thunderstorm WarningCYSGoshen, Platte48 min
May 26, 6:32 PM MDTFlash Flood WarningCYSPlatte4 hr
May 26, 6:45 PM MDTSevere Thunderstorm WarningCYSGoshen, Laramie, Platte30 min
May 26, 7:00 PM MDTFlash Flood WarningCYSPlatte12 hr
May 26, 7:08 PM MDTSpecial Weather StatementCYSLaramie52 min
May 26, 8:36 PM MDTFlash Flood Warning EmergencyCYSPlatte10 hr
May 26, 9:04 PM MDTSpecial Weather StatementCYSAlbany41 min
May 27, 2:49 AM MDTWinter Storm WarningCYSAlbany, Carbon49 hr
May 27, 1:00 PM MDTSpecial Weather StatementCYSLaramie45 min
May 27, 1:15 PM MDTSevere Thunderstorm WarningCYSLaramie45 min
May 27, 1:34 PM MDTFlash Flood WarningCYSLaramie5 hr
May 27, 1:58 PM MDTSpecial Weather StatementCYSLaramie47 min
May 27, 2:20 PM MDTSpecial Weather StatementCYSLaramie40 min
May 27, 2:23 PM MDTSpecial Weather StatementCYSLaramie37 min
May 27, 2:43 PM MDTSevere Thunderstorm WarningCYSLaramie47 min
May 27, 2:50 PM MDTTornado WarningCYSGoshen, Laramie40 min
May 27, 3:27 PM MDTSevere Thunderstorm WarningCYSLaramie48 min
May 27, 3:40 PM MDTSpecial Weather StatementCYSGoshen50 min
May 27, 4:04 PM MDTSevere Thunderstorm WarningCYSGoshen41 min
May 27, 4:11 PM MDTSevere Thunderstorm WarningCYSLaramie49 min
May 27, 4:25 PM MDTSpecial Weather StatementCYSLaramie35 min
May 27, 4:47 PM MDTSevere Thunderstorm WarningCYSGoshen28 min
May 26, 6:38 PM MDTSpecial Weather StatementCYSKimball37 min
May 27, 4:55 PM MDTSpecial Weather StatementCYSBanner, Scotts Bluff50 min
May 27, 5:43 PM MDTSpecial Weather StatementCYSBanner, Scotts Bluff47 min

Nearby

River Flood Warnings in Wyoming, 2019Every river flood warning in 2019

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; the gauge from the NWS water service and the USGS.