Special Weather Statement
Issued by NWS Riverton, WY

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WWUS85 KRIW 192019
SPSRIW

Special Weather Statement
National Weather Service Riverton WY
219 PM MDT Thu Oct 19 2017

WYZ019-020-022-200900-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-
Including the cities of Jeffrey City and Casper
219 PM MDT Thu Oct 19 2017

...Strong winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, strong winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 25 to 35 mph with gusts to 45 mph are
expected. Relative humidity is expected to drop to 17 to 23
percent in the afternoon.

Travel with light weight and high profile trailers may become
difficult. Outdoor burning is not recommended.

$$

WYZ016>018-200900-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Including the cities of Dubois, Riverton, Shoshoni, and Lander
219 PM MDT Thu Oct 19 2017

...Strong winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, strong winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 20 to 30 mph with gusts to 40 mph are
expected. Relative humidity is expected to drop to 17 to 23
percent in the afternoon.

Travel with light weight and high profile trailers may become
difficult. Outdoor burning is not recommended.

$$

WYZ003-200900-
Cody Foothills-
Including the cities of Cody and Meeteetse
219 PM MDT Thu Oct 19 2017

...Strong winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, strong winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 25 to 35 mph with gusts to 45 mph are
expected. Local wind gusts to 55 mph may occur around Clark.
Relative humidity is expected to drop to 17 to 23 percent in the
afternoon.

Travel with light weight and high profile trailers may become
difficult. Outdoor burning is not recommended.

$$

WYZ010-011-200900-
Northeast Johnson County-Southeast Johnson County-
Including the cities of Buffalo and Kaycee
219 PM MDT Thu Oct 19 2017

...Gusty winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, Gusty winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 20 to 25 mph with gusts to 35 mph are expected.
Relative humidity is expected to drop to 17 to 23 percent in the
afternoon.

Outdoor burning is not recommended.

$$

WYZ028>030-200900-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Rock Springs, Green River, and Wamsutter
219 PM MDT Thu Oct 19 2017

...Strong winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, strong winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 25 to 35 mph with gusts to 45 mph are
expected. Local wind gusts to 55 mph may occur from Bitter Creek
to Wamsutter. Relative humidity is expected to drop to 17 to 23
percent in the afternoon.

Travel with light weight and high profile trailers may become
difficult. Outdoor burning is not recommended.

$$

WYZ001-012-013-200900-
Yellowstone National Park-Teton and Gros Ventre Mountains-
Jackson Hole-
Including the cities of Lake, Mammoth, Old Faithful, and Jackson
219 PM MDT Thu Oct 19 2017

...Snow with strong winds Friday afternoon and night...

A Pacific low pressure trough is expected to bring areas of
moderate to heavy snow showers to the mountains developing
Friday morning and becoming more widespread Friday afternoon
and night.

Snowfall of 3 to 6 inches is expected above 8500 feet with areas
of 6 to 10 inches above 9500 feet. The snow level will fall into
the valleys during the evening with 1 to 3 inches possible below
8500 feet.

The snow showers will be accompanied by strong west winds of 20
to 30 mph with gusts to 40 mph on the passes and higher ridges.

Hunters, campers and climbers should be prepared for snow and
strong gusty winds.

$$

WYZ002-200900-
Absaroka Mountains-
219 PM MDT Thu Oct 19 2017

...Snow with strong winds Friday afternoon and night...

A Pacific low pressure trough is expected to bring areas of
moderate to heavy snow showers to the mountains developing
Friday morning and becoming more widespread Friday afternoon
and night.

Snowfall of 3 to 5 inches is expected above 8500 feet with areas
of 5 to 8 inches above 9500 feet. The snow level will fall into
the valleys during the evening with 1 to 2 inches possible below
8500 feet.

The snow showers will be accompanied by strong west winds of 30
to 40 mph with gusts to 50 mph on the passes and higher ridges.

Hunters, campers and climbers should be prepared for snow and
strong gusty winds.

$$

WYZ015-200900-
Wind River Mountains East-
219 PM MDT Thu Oct 19 2017

...Snow with strong winds Friday afternoon and night...

A Pacific low pressure trough is expected to bring areas of
moderate snow showers to the mountains developing Friday morning
and becoming more widespread Friday afternoon and night.

Snowfall of 2 to 4 inches is expected above 8500 feet with areas
of 4 to 7 inches above 9500 feet. The snow level will fall into
the valleys during the evening with 1 to 2 inches possible below
8500 feet.

The snow showers will be accompanied by strong west winds of 30
to 40 mph with gusts to 50 mph on the passes and higher ridges.

Hunters, campers and climbers should be prepared for snow and
strong gusty winds.

$$

WYZ014-025-026-200900-
Wind River Mountains West-Upper Green River Basin Foothills-
Upper Green River Basin-
Including the cities of Pinedale, La Barge, Big Piney, and Farson
219 PM MDT Thu Oct 19 2017

...Snow with strong winds Friday afternoon and night...

A Pacific low pressure trough is expected to bring areas of
moderate to heavy snow showers to the mountains developing
Friday morning and becoming more widespread Friday afternoon
and night.

Snowfall of 3 to 5 inches is expected above 8500 feet with areas
of 5 to 8 inches above 9500 feet. The snow level will fall into
the valleys during the evening with 1 to 2 inches possible below
8500 feet.

The snow showers will be accompanied by strong west winds of 20
to 30 mph with gusts to 40 mph on the passes and higher ridges.

Hunters, campers and climbers should be prepared for snow and
strong gusty winds.

$$

WYZ023-024-027-200900-
Star Valley-Salt River and Wyoming Ranges-South Lincoln County-
Including the cities of Afton, Alpine, Star Valley Ranch, Thayne,
Kemmerer, and Cokeville
219 PM MDT Thu Oct 19 2017

...Snow with strong winds Friday afternoon and night...

A Pacific low pressure trough is expected to bring areas of
moderate to heavy snow showers to the mountains developing
Friday morning and becoming more widespread Friday afternoon
and night.

Snowfall of 3 to 4 inches is expected above 8500 feet with areas
of 4 to 7 inches above 9500 feet. The snow level will fall into
the valleys during the evening with 1 to 2 inches possible below
8500 feet.

The snow showers will be accompanied by strong west winds of 25
to 35 mph with gusts to 45 mph on the passes and higher ridges.

Hunters, campers and climbers should be prepared for snow and
strong gusty winds.

$$

WYZ007-200900-
Owl Creek and Bridger Mountains-
219 PM MDT Thu Oct 19 2017

...Strong winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, strong winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 25 to 35 mph with gusts to 45 mph are
expected. Relative humidity is expected to drop to 20 to 25
percent in the afternoon.

Travel with light weight and high profile trailers may become
difficult. Outdoor burning is not recommended.

$$

WYZ008-009-200900-
Bighorn Mountains West-Bighorn Mountains Southeast-
219 PM MDT Thu Oct 19 2017

...Strong winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, strong winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 25 to 35 mph with gusts to 45 mph are
expected. Relative humidity is expected to drop to 20 to 25
percent in the afternoon.

Travel with light weight and high profile trailers may become
difficult. Outdoor burning is not recommended.

$$

WYZ004>006-200900-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-
Including the cities of Thermopolis and Worland
219 PM MDT Thu Oct 19 2017

...Gusty winds with low relative humidity Friday...

Ahead of a Pacific low pressure trough, Gusty winds are expected
developing late Friday Morning continuing through Friday evening.
Southwest winds of 20 to 25 mph with gusts to 35 mph are
expected. Relative humidity is expected to drop to 17 to 23
percent in the afternoon.

Outdoor burning is not recommended.

$$



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