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Flood Advisory


Flood Advisory
National Weather Service Riverton WY
325 AM MDT Sat May 18 2024

WYC019-200500-
/O.NEW.KRIW.FA.Y.0001.240518T0925Z-240520T0500Z/
/00000.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnson WY-
325 AM MDT Sat May 18 2024

...FLOOD ADVISORY FOR SNOWMELT IN EFFECT UNTIL 11 PM MDT SUNDAY...

* WHAT...River rises caused by high-elevation snowmelt have been
  observed and are the result of recent warm temperatures.

* WHERE...A portion of north central Wyoming, including the
  following county, Johnson.

* WHEN...Until 1100 PM MDT Sunday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
  Some low-water crossings may become impassable. River or stream
  flows are elevated.

* ADDITIONAL DETAILS...
  - At 322 AM MDT, gauge reports indicated river rises and SNOTEL
    observations indicate snowmelt has occurred over the past few
    days. Minor flooding is ongoing or expected to begin shortly
    in the advisory area.
  - Warm temperatures are expected to continue to cause high-
    elevation snowpack melt through Sunday.
  - Some locations that will experience flooding include...
    Kaycee and Barnum.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

LAT...LON 4374 10668 4374 10659 4368 10657 4369 10664
      4364 10674 4360 10684 4356 10692 4357 10701
      4354 10711 4355 10711 4356 10711 4361 10711
      4367 10693 4374 10685 4369 10679


$$

Hensley


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service North Platte NE
340 PM CDT Sat May 18 2024

NEZ004>010-022>029-035>038-056>059-069>071-094-192045-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-Grant-
Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-Logan-
Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
340 PM CDT Sat May 18 2024 /240 PM MDT Sat May 18 2024/

This Hazardous Weather Outlook is for portions of western and north
central Nebraska.

.DAY ONE...Tonight.

Scattered thunderstorms will develop across far southwest Nebraska
late this evening, then spread into the Sandhills overnight. The
threat of severe weather appears low at this time.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Scattered storms will affect the region throughout the day Sunday as
well, with some continuing into Sunday night. Some of the storms may
be strong or severe during the afternoon and evening hours,
primarily for areas south of Highway 2 and west of Highway 83. Large
hail and damaging winds are the main concerns.

A potentially more potent system crosses the Plains Monday into
Tuesday, bringing rounds of heavy rain to the region. The threat for
widespread or serious flooding is low, but localized flash flooding
is possible and low lying areas will be susceptible to standing
water. A few of the storms may produce hail and wind for portions of
southwest and central Nebraska on Monday, roughly from Imperial to
North Platte to O`Neill and points east.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1052 AM MDT Sat May 18 2024

COZ030>051-191700-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1052 AM MDT Sat May 18 2024

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Scattered showers and storms will develop and move east across
the area this afternoon and evening. The primary impact of these
showers and storms will be gusty outflow winds to around 45 mph,
kicking up some dust and blowing around unsecured lightweight
objects. There`s a small threat that a severe gust as high as 60
mph will occur. Heavy rain and large hail is not expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Isolated showers and thunderstorms are possible across the high
country north of I-70 and over the far eastern plains on Sunday. A
storm system is expected to bring cooler and unsettled weather to
the region from Monday into Tuesday. Scattered showers and
thunderstorms should develop behind a cold front late Monday, with
showers and a few storms continuing into Tuesday. Light mountain
snow is also possible on Tuesday, mainly above 9,000 feet.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight. However,
any reports of strong, gusty winds will be appreciated.

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
503 AM MDT Sat May 18 2024

WYZ001>020-022>030-191515-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn 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-
503 AM MDT Sat May 18 2024

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight.

Elevated to critical fire weather conditions are expected for much of
central and southern Wyoming today.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Elevated fire weather conditions continue on Sunday.

Monday and Tuesday...A stronger system will bring widespread rain and
mountain snow to the area.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$

Hazardous Weather Outlook
National Weather Service Grand Junction CO
301 AM MDT Sat May 18 2024

COZ001>014-017>023-UTZ022>025-027>029-191500-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
301 AM MDT Sat May 18 2024

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Unseasonably warm and breezy weather will continue today with
scattered showers and thunderstorms developing over the higher
terrain this afternoon. The central mountains along the Divide will
be favored with some drift into the adjacent valleys. Gusty outflow
winds will be the main threat from storms. Showers will linger across
the north tonight with dry weather elsewhere.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Another round of scattered showers and storms will develop across
northeast Utah and northwest Colorado on Sunday with breezy
conditions elsewhere. Gusts of 25 to 35 mph are expected. Showers
increase in coverage Monday and Tuesday as a system pushes through
before drier and cooler air arrives for Wednesday. Additional systems
look to impact the area late next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
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