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Flood Warning


Flood Statement
National Weather Service Pocatello ID
1222 PM MDT Fri May 17 2024

...The Flood Warning continues for the following rivers in Idaho...

  Portneuf River at Pocatello affecting Bannock County.

.Warm temperatures will melt high mountain snowpack and keep river
flows elevated, though overall river flow is slightly decreasing due
to a diminishing snowpack.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Motorists should not attempt to drive around barricades or drive
cars through flooded areas.

Additional information is available at www.weather.gov/pocatello.

&&

IDC005-182000-
/O.CON.KPIH.FL.W.0001.000000T0000Z-240525T0900Z/
/PIHI1.2.SM.240405T1000Z.240515T1645Z.240525T1949Z.NO/
1222 PM MDT Fri May 17 2024

...FLOOD WARNING FOR SNOWMELT REMAINS IN EFFECT UNTIL SATURDAY, MAY
25...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Portneuf River at Pocatello.

* WHEN...Until Saturday, May 25.

* IMPACTS...At 8.0 feet, Water will encroach onto portions of the
  bike and walking trail next to the river in Sacajawea Park in
  Pocatello.
  At 8.5 feet, Sections of Sacajawea Park will be under water and
  the trail is usually closed at this level. Marsh Creek near Inkom
  may also be over its banks.
  At 9.2 feet, Flooding of low lying agricultural land and pasture
  will occur in the Inkom and Blackrock area. Lowland flooding is
  likely along sections of the river between Portneuf Gap and the
  Cheyenne Avenue Bridge in Pocatello.
  At 9.4 feet, Water will encroach around sitting benches near the
  river at the Pacific Recycling Trailhead.

* ADDITIONAL DETAILS...
  - At 10:45 AM MDT Friday the stage was 9.5 feet.
  - Recent Activity...The maximum river stage in the 24 hours
    ending at 10:45 AM MDT Friday was 9.6 feet.
  - Forecast...The river is expected to fall below flood stage
    Saturday, May 25 and continue falling to 8.3 feet Monday, May
    27.
  - Flood stage is 8.5 feet.
  - Flood History...This crest compares to a previous crest of
    9.4 feet on 04/26/1986.
  - http://www.weather.gov/safety/flood

&&

              Fld   Observed           Forecasts (12 pm MDT)
Location      Stg   Stg   Day/Time     Sat   Sun   Mon

Portneuf River
Pocatello     8.5   9.5   Fri 10 am MD 9.4   9.3   9.2


&&

LAT...LON 4294 11262 4298 11250 4283 11236 4281 11223
      4275 11232 4277 11241


$$

TW


Flood Advisory


Flood Advisory
National Weather Service Elko NV
455 AM PDT Sat May 18 2024

...The Flood Advisory continues for the following rivers in Nevada...

  Bruneau River At Rowland affecting Elko County.

.Warm temperatures will melt snowpack and increase river flows.

For the Bruneau River...including Rowland...elevated river levels
are forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 500 PM PDT.

&&

NVC007-190000-
/O.CON.KLKN.FL.Y.0023.000000T0000Z-000000T0000Z/
/BRON2.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.UU/
455 AM PDT Sat May 18 2024

...FLOOD ADVISORY FOR SNOWMELT REMAINS IN EFFECT UNTIL FURTHER
NOTICE...

* WHAT...Flooding caused by snowmelt is possible.

* WHERE...Bruneau River at Rowland.

* WHEN...Until further notice.

* IMPACTS...At 7.0 feet, Minor flooding of Forest Service roads.
  Recreational use becomes limited.

* ADDITIONAL DETAILS...
  - At 4:40 AM PDT Saturday the stage was 6.0 feet.
  - Bankfull stage is 6.0 feet.
  - Forecast...No forecast is available for this location.
  - Action stage is 6.0 feet.
  - Flood stage is 7.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4200 11566 4197 11568 4196 11568 4195 11568
      4194 11569 4193 11568 4193 11570 4192 11570
      4191 11568 4190 11568 4190 11566 4191 11566
      4192 11568 4193 11567 4195 11567 4197 11566
      4200 11565


$$

96

Flood Advisory
National Weather Service Elko NV
442 AM PDT Sat May 18 2024

...The Flood Advisory continues for the following rivers in Nevada...

  Lamoille Creek Above Lamoille affecting Elko County.

.Warm temperatures continue to melt snowpack and increase creek
flows.

For the Lamoille Creek...including Lamoille...elevated creek levels
are forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 500 PM PDT.

&&

NVC007-190000-
/O.CON.KLKN.FL.Y.0024.000000T0000Z-000000T0000Z/
/LCLN2.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.UU/
442 AM PDT Sat May 18 2024

...FLOOD ADVISORY FOR SNOWMELT REMAINS IN EFFECT UNTIL FURTHER
NOTICE...

* WHAT...Flooding caused by snowmelt is possible.

* WHERE...Lamoille Creek above Lamoille.

* WHEN...Until further notice.

* IMPACTS...At 4.0 feet, this is monitoring stage. Visitors to the
  lamoille canyon and the powerhouse picnic area need to use extreme
  caution around Lamoille creek and other creeks in the ruby
  mountains. Pets, children, and even adult can be swept away in the
  strong current.

* ADDITIONAL DETAILS...
  - At 4:25 AM PDT Saturday the stage was 4.1 feet.
  - Bankfull stage is 4.0 feet.
  - Forecast...No forecast is available for this location.
  - Action stage is 4.0 feet.
  - Flood stage is 4.8 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4070 11546 4079 11542 4088 11539 4097 11542
      4094 11545 4091 11543 4087 11542 4082 11543
      4077 11548 4075 11549 4073 11549 4072 11548
      4070 11548


$$

96

Flood Advisory
National Weather Service Elko NV
436 AM PDT Sat May 18 2024

...The Flood Advisory is extended for the following rivers in
Nevada...

  Owyhee River near Mountain City affecting Elko County.

.Warm temperatures will melt high mountain snowpack and increase
river flows.

For the Owyhee River...including Mountain City...elevated river
levels are forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 500 PM PDT.

&&

NVC007-190000-
/O.EXT.KLKN.FL.Y.0022.000000T0000Z-240519T1200Z/
/OMCN2.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.UU/
436 AM PDT Sat May 18 2024

...FLOOD ADVISORY FOR SNOWMELT NOW IN EFFECT UNTIL LATE TONIGHT...

* WHAT...Flooding caused by snowmelt is possible.

* WHERE...Owyhee River near Mountain City.

* WHEN...Until late tonight.

* IMPACTS...At 8.0 feet, Minor flooding along the river channel.

* ADDITIONAL DETAILS...
  - At 4:25 AM PDT Saturday the stage was 7.1 feet.
  - Bankfull stage is 7.0 feet.
  - Forecast...The river is expected to remain near action stage
    today, then fall below action stage later this weekend or
    early next week.
  - Action stage is 7.0 feet.
  - Flood stage is 8.0 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4175 11594 4177 11592 4186 11597 4187 11601
      4200 11613 4200 11622 4193 11615 4192 11613
      4189 11610 4187 11606 4182 11601 4179 11596


$$

96

Flood Advisory
National Weather Service Elko NV
434 AM PDT Sat May 18 2024

...The Flood Advisory continues for the following rivers in Nevada...

  Jarbidge River Below Jarbidge affecting Elko County.

.Warm temperatures will melt high mountain snowpack, keeping river
flows elevated.

For the Jarbidge River...including Jarbidge...elevated river levels
are forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov.

The next statement will be issued this afternoon at 500 PM PDT.

&&

NVC007-190000-
/O.CON.KLKN.FL.Y.0021.000000T0000Z-000000T0000Z/
/JBGN2.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.UU/
434 AM PDT Sat May 18 2024

...FLOOD ADVISORY FOR SNOWMELT REMAINS IN EFFECT UNTIL FURTHER
NOTICE...

* WHAT...Flooding caused by snowmelt is possible.

* WHERE...Jarbidge River below Jarbidge.

* WHEN...Until further notice.

* IMPACTS...At 5.5 feet, Minor flooding occurs along the Jarbidge
  River near Jarbidge. Pine Creek and Bluster campgrounds are
  flooded. Minor erosion occurs along the primary access road from
  Idaho to Jarbidge (seasonally, the only access road).

* ADDITIONAL DETAILS...
  - At 4:25 AM PDT Saturday the stage was 5.2 feet.
  - Bankfull stage is 5.0 feet.
  - Forecast...No forecast is available for this location.
  - Action stage is 5.0 feet.
  - Flood stage is 5.5 feet.
  - http://www.weather.gov/safety/flood

&&

LAT...LON 4187 11544 4187 11542 4190 11542 4193 11541
      4196 11541 4200 11540 4200 11542 4193 11543
      4191 11543 4190 11543 4188 11544


$$

96

Flood Advisory
National Weather Service Elko NV
432 AM PDT Sat May 18 2024

...The Flood Advisory continues for the following rivers in Nevada...

  Wildhorse Reservoir at Wildhorse Dam affecting Elko County.

.Ongoing snow melt will promote an elevated reservoir level.

For the Owyhee River...including Wildhorse Dam...elevated reservoir
levels are forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Caution is urged when walking near banks.

Additional information is available at www.weather.gov.

Next issuance will be by this afternoon at 500 PM PDT.

&&

NVC007-190000-
/O.CON.KLKN.FL.Y.0008.000000T0000Z-000000T0000Z/
/WDHN2.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.UU/
432 AM PDT Sat May 18 2024

...FLOOD ADVISORY FOR SNOWMELT REMAINS IN EFFECT UNTIL FURTHER
NOTICE...

* WHAT...An elevated reservoir level caused by seasonal snowmelt
  continues.

* WHERE...Wildhorse Reservoir at Wildhorse Dam.

* WHEN...Until further notice.

* ADDITIONAL DETAILS...
  - At 4:15 AM PDT Saturday the stage was 6205.9 feet.
  - N/A
  - Forecast...The reservoir level is expected to remain steady
    for the next several days.
  - Action stage is 6205.0 feet.
  - Flood stage is 6208.0 feet.
  - http://www.weather.gov/safety/flood

&&

                   Fld   Observed           Forecasts (5 am PDT)
Location           Stg   Stg   Day/Time     Sun   Mon   Tue

Wildhorse Reservoir
Wildhorse Dam      6208. 6205. Sat 4 am PDT 6205. 6205. 6205.


&&

LAT...LON 4170 11584 4169 11583 4168 11585 4169 11586
      4170 11586


$$

96

Flood Advisory
National Weather Service Pocatello ID
1221 PM MDT Fri May 17 2024

...The Flood Advisory continues for the following rivers in Idaho...

  Portneuf River at Topaz affecting Bannock County.

.Warm temperatures will melt high mountain snowpack and increase
river flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

River flows will remain near of slightly above flood stage today and
possibly tomorrow before likely dropping off in the next couple of
days due to cooler temperatures and a diminishing snowpack.

Caution is urged when walking near riverbanks.

Additional information is available at www.weather.gov/pocatello.

&&

IDC005-182000-
/O.CON.KPIH.FL.Y.0003.000000T0000Z-000000T0000Z/
/TOPI1.N.SM.000000T0000Z.000000T0000Z.000000T0000Z.NR/
1221 PM MDT Fri May 17 2024

...FLOOD ADVISORY FOR SNOWMELT REMAINS IN EFFECT UNTIL FURTHER
NOTICE...

* WHAT...Flooding caused by snowmelt continues. Snowmelt was
  slightly higher yesterday due to warmer temperatures. Snowmelt
  will keep river levels higher but snowmelt and river levels will
  start to drop off this next week due to cooler temperatures and a
  diminishing snowpack.

* WHERE...Portneuf River at Topaz.

* WHEN...Until further notice.

* IMPACTS...At 4.0 feet, Lowland and crop field flooding possible
  from Pebble Creek to Inkom.

* ADDITIONAL DETAILS...
  - At 11:15 AM MDT Friday the stage was 4.0 feet.
  - Forecast...The river is expected be just above flood stage of
    4.0 feet today. Then, it will then likely fall below flood
    stage early tomorrow afternoon.
  - Action stage is 3.5 feet.
  - Flood stage is 4.0 feet.
  - http://www.weather.gov/safety/flood

&&

              Fld   Observed           Forecasts (12 pm MDT)
Location      Stg   Stg   Day/Time     Sat   Sun   Mon

Portneuf River
Topaz         4.0   4.0   Fri 11 am MD 4.0   4.0   3.9


&&

LAT...LON 4275 11232 4281 11223 4265 11206 4287 11202
      4287 11185 4248 11203


$$

TW


Hazardous Weather Outlook


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
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE