860
WWUS45 KRIW 071949
WSWRIW

URGENT - WINTER WEATHER MESSAGE
National Weather Service Riverton WY
149 PM MDT Tue May 7 2024

WYZ008-009-081300-
/O.EXB.KRIW.WS.W.0014.240508T0000Z-240509T1200Z/
Bighorn Mountains West-Bighorn Mountains Southeast-
149 PM MDT Tue May 7 2024

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
MDT THURSDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 2
  feet, mainly over the northern half of the Bighorn Range.
  Snowfall of 8 to 16 inches will be common. Northerly wind 20 to
  30 mph.

* WHERE...Bighorn Mountains West and Bighorn Mountains Southeast.

* WHEN...From 6 PM Tuesday to 6 AM MDT Thursday.

* IMPACTS...Travel could be difficult over both Powder River and
  Granite Passes.

* ADDITIONAL DETAILS...The heaviest snow falls between 3 AM and 3
  PM Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts,
visit weather.gov/riw/winter.

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info.

&&

$$

WYZ012-081300-
/O.EXT.KRIW.WS.W.0014.000000T0000Z-240508T1800Z/
Teton and Gros Ventre Mountains-
149 PM MDT Tue May 7 2024

...WINTER STORM WARNING NOW IN EFFECT UNTIL NOON MDT WEDNESDAY...

* WHAT...Heavy snow. Additional snow accumulations of 6 to 12
  inches. Northwest wind 20 to 30 mph.

* WHERE...Teton and Gros Ventre Mountains.

* WHEN...Until noon MDT Wednesday.

* IMPACTS...Travel could be difficult over both Teton and
  Togwotee Passes.

* ADDITIONAL DETAILS...After a lull in the snow Tuesday evening,
  snow increases again early Wednesday morning and persists until
  midday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts,
visit weather.gov/riw/winter.

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info.

&&

$$

WYZ001-081300-
/O.EXT.KRIW.WW.Y.0025.000000T0000Z-240508T1800Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
149 PM MDT Tue May 7 2024

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON MDT
WEDNESDAY...

* WHAT...Snow. Additional snow accumulations of 2 to 4 inches.
  Higher totals of 4 to 6 inches in the higher terrain along the
  eastern boundary of Yellowstone. Northwest wind 15 to 25 mph.

* WHERE...Yellowstone National Park.

* WHEN...Until noon MDT Wednesday.

* IMPACTS...Travel on paved roads could be slick and
  snow-covered at times.

* ADDITIONAL DETAILS...After a brief lull in the snow Tuesday
  evening, another surge of snow arrives from the north toward
  midnight and continues through Wednesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

For graphical depictions of the snowfall forecast, including the
official NWS forecast, high end amounts, and low end amounts,
visit weather.gov/riw/winter.

For winter road conditions from the Wyoming Department of
Transportation, visit https://wyoroad.info.

&&

$$

For more information from the National Weather Service visit
https://weather.gov/riw