Teton County, Wyoming
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Teton County, Wyoming
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Special Weather Statement
WYZ001-002-012-014-015-024-211800-
Yellowstone National Park-Absaroka Mountains-
Teton and Gros Ventre Mountains-Wind River Mountains West-
Wind River Mountains East-Salt River and Wyoming Ranges-
Including the cities of Lake, Mammoth, and Old Faithful
138 AM MDT Thu Sep 21 2017

...Cool and very wet Pacific storm system headed into western
Wyoming today...

The strong Pacific storm headed towards western Wyoming will
continue to bring copious amounts of precipitation with it.
However, temperatures with this Pacific air mass will be much
warmer than originally thought, keeping snow accumulation levels
high...at or above 9500 feet through tonight...with snow mixing
with rain below this level down to about 8500 feet. High mountain
passes such as Teton and Togwotee Passes will experience periods
of wet mountain snow this morning that could cause slushy
conditions on the roadways and slowing travel times. Otherwise,
anywhere from a half an inch and an inch and a half of liquid
precipitation can be expected to fall between now and Friday
morning across the western mountains and valleys. Heaviest
accumulating snow over the same time frame will range from 3 to 8
inches above 9500 feet...with locally higher amounts possible.

$$
Winter Weather Advisory
WYZ001-212200-
/O.CON.KRIW.WW.Y.0033.000000T0000Z-170923T0000Z/
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
747 AM MDT Thu Sep 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT
FRIDAY...

* TIMING...Periods of snow will impact the higher elevations of
Yellowstone National Park through the day Friday. Snow levels
will vary between 7500 and 9000 feet.

* SNOWFALL TOTALS...6 to 12 inches above 10000 feet, 4 to 8
inches over Dunraven, and Sylvan mountain passes. 2 to 4
inches at Canyon. No snowfall is expected in Mammoth.

* MAIN IMPACT...Mountain passes in Yellowstone will be slick and
hazardous at times.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter weather advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
and slick roads with limited visibilities. Slow down, and allow
extra time to reach your destination. Check the latest road
conditions before venturing out.

&&

$$

Winter Weather Advisory
WYZ012-212100-
/O.CON.KRIW.WW.Y.0033.000000T0000Z-170921T2100Z/
Teton and Gros Ventre Mountains-
747 AM MDT Thu Sep 21 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON...

* TIMING...Snow, moderate at times, will continue in the Teton and
Gros Ventre Mountains this morning. Snow levels will gradually
rise today to around 9000 feet by late this afternoon. Snow will
likely continue at times tonight and Friday with the potential
for winter highlights to be extended.

* SNOWFALL TOTALS THROUGH 6 AM...Grand Targhee around a foot, and
Togwotee Pass with about 4 inches.

* ADDITIONAL SNOWFALL...An additional 2 to 4 inches between 8000
and 9500 feet, with 4 to 8 inches above 9500 feet.

* MAIN IMPACT...Teton and Togwotee mountain passes will be slick
and hazardous this morning. Road conditions are expected to
improve this afternoon to only being wet as temperatures warm
up. Back country travellers and hunters should be prepared for
wet heavy snow.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A winter weather advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
and slick roads with limited visibilities. Slow down, and allow
extra time to reach your destination. Check the latest road
conditions at wyoroad.info or by dialing 5 1 1.

&&

$$

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