Western and Central Wyoming

Weather Forecast Office

Saturday: Signficant Western Valley Rain & Mountain Snow with Minor Flooding Possible

SYNOPSIS:

Saturday & Saturday evening: A stronger, but warmer system is expected to impact the Cowboy State. The bulk of the precipitation is expected to impact the western and southern portions of the area. Significant mountain snow/valley rain could occur over the west and southwest with this system with rain expected up to 9000 feet. A few thunderstorms are possible Saturday afternoon and evening which could produce heavy downpours. The rainfall in the western valleys on a melting snowpack, and some frozen ground could cause localized flooding across the western valleys Saturday. Although the heaviest of the precipitation will end Saturday night, the localized flooding threat could continue over the far west into the day Sunday.

IMPACTS:

Localized flooding possible across the western Valleys Saturday & Sunday

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NWS Text Products and Forecasts

Area Forecast Discussion	Flood Watch Statement	Special Weather Statement	What's a "Watch?"
Observed Snow Totals		Weather Story	What's a "Watch?"

**Quick View of Hazards and Forecast Precipitation Totals (created at 6 AM on 4/7)**

Click Image To Enlarge â–º Flood Advisory for the Jackson Hole Valley until 1145 AM Sunday â–º Flood Watch for the Star Valley from Noon Saturday through Sunday Afternoon	Click Image To Enlarge Expected Precipitation Saturday & Saturday Night (Mainly Rainfall below 9000 feet)

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Snow Totals and Wind Reports will be posted and updated here once the storm occurs (Please double check date and time of product)
710 NOUS45 KRIW 191858 PNSRIW WYZ001>020-022>030-200651- Public Information Statement National Weather Service Riverton WY 1151 AM MST Thu Dec 19 2024 ...SUMMARY... A strong jet streak pushed down into Wyoming on Wednesday, with the right exit region situated over the area for several hours from Wednesday morning into Wednesday evening. This allowed for the strong jet streak wind to mix down to the surface for several locations. High Wind Warnings were issued and verified in the Cody Foothills, Absaroka Mountains, and Natrona County. Some local terrain effects resulted in high wind at Buffalo Wednesday evening as the jet streak slid east. There were reports of loose objects getting blown around and some objects being blown over, but there was no major structural damage or downed trees reported. ...HIGHEST WIND REPORTS... Location Speed Time/Date Elevation (ft.) ...Wyoming... ...Fremont County... Red Canyon - South Pass 81 MPH 1258 PM 12/18 6581 Lava Mountain (BTAVAL) 72 MPH 0845 PM 12/18 10359 Muddy Gap 7 SW 70 MPH 0750 PM 12/18 7379 Fort Washakie 10 W 68 MPH 0801 PM 12/18 9234 Skyline 57 MPH 0640 PM 12/18 8500 Lander 7 NW 55 MPH 0525 PM 12/18 5797 Elkhorn 54 MPH 1257 PM 12/18 8084 Badwater Road 53 MPH 0630 PM 12/18 6270 Crowheart 52 MPH 1145 PM 12/18 6137 Riverton Airport 52 MPH 0111 AM 12/19 5509 ...Hot Springs County... Boysen Peak 61 MPH 0535 PM 12/18 7099 ...Johnson County... Buffalo Airport 64 MPH 0715 PM 12/18 4905 Story 5.5 SE (WYDOT) 61 MPH 0626 PM 12/18 4632 Buffalo 18 NW 60 MPH 0747 PM 12/18 8604 Tisdale Mountain 55 MPH 0250 PM 12/18 5557 Purdy East 54 MPH 1100 PM 12/18 4687 Barnum 7 SW 53 MPH 0446 PM 12/18 6439 I25 Us87 - Tisdale Divide 51 MPH 0306 PM 12/18 4990 BUFFALO 50 MPH 0700 PM 12/18 4675 ...Lincoln County... Mount Coffin (BTAVAL) 93 MPH 0615 PM 12/18 10855 ...Natrona County... Claude Creek 73 MPH 0420 PM 12/18 6282 Hiland 16 S 68 MPH 0310 PM 12/18 6379 Casper 2.1 SW (WYDOT) 66 MPH 0202 PM 12/18 5462 I25 - Hat Six 65 MPH 0512 PM 12/18 5157 Coates Rd 64 MPH 0100 PM 12/18 5866 Muddy Creek 60 MPH 0600 PM 12/18 5571 Bar Nunn 13.6 N (WYDOT) 57 MPH 0202 PM 12/18 5656 Mills 2 NE (WYDOT) 53 MPH 0406 PM 12/18 5312 EVANSVILLE 51 MPH 0431 PM 12/18 5187 Casper Airport 51 MPH 0611 PM 12/18 5327 Hiland 2.4 SE (WYDOT) 51 MPH 1206 AM 12/19 6115 ...Park County... Sunlight Basin 8 E (WYDOT) 85 MPH 0902 PM 12/18 8083 Dead Indian Ridge 71 MPH 0850 PM 12/18 8145 Irma Lake 70 MPH 0740 PM 12/18 6222 Pahaska 3 E 64 MPH 0657 PM 12/18 7500 Wood River East 62 MPH 0310 PM 12/18 7070 Cedar Mountain 58 MPH 1200 PM 12/18 7542 Shoshone Southfork 58 MPH 0100 PM 12/18 5896 Clark 57 MPH 0145 PM 12/18 4270 Cody 10 WNW 54 MPH 0240 PM 12/18 8400 Wapiti 54 MPH 1205 AM 12/19 5993 Crandall 53 MPH 0512 PM 12/18 6640 ...Sublette County... Hogsback 54 MPH 0610 PM 12/18 9008 Cottonwood Merna 50 MPH 0700 PM 12/18 7830 ...Teton County... Jackson Hole - Summit (BTAVA 65 MPH 0500 PM 12/18 10328 Surprise Pinnacle (BTAVAL) 65 MPH 0530 PM 12/18 9770 Observations are collected from a variety of sources with varying equipment and exposures. We thank all volunteer weather observers for their dedication. Not all data listed are considered official. $$

Snow Totals and Wind Reports will be posted and updated here once the storm occurs
(Please double check date and time of product)

                        
710
NOUS45 KRIW 191858
PNSRIW
WYZ001>020-022>030-200651-

Public Information Statement
National Weather Service Riverton WY
1151 AM MST Thu Dec 19 2024

...SUMMARY...

A strong jet streak pushed down into Wyoming on Wednesday, with the
right exit region situated over the area for several hours from
Wednesday morning into Wednesday evening. This allowed for the
strong jet streak wind to mix down to the surface for several
locations. High Wind Warnings were issued and verified in the Cody
Foothills, Absaroka Mountains, and Natrona County. Some local
terrain effects resulted in high wind at Buffalo Wednesday evening
as the jet streak slid east. There were reports of loose objects
getting blown around and some objects being blown over, but there
was no major structural damage or downed trees reported.

...HIGHEST WIND REPORTS...

Location                     Speed     Time/Date       Elevation (ft.)

...Wyoming...

...Fremont County...
Red Canyon - South Pass      81 MPH    1258 PM 12/18   6581
Lava Mountain (BTAVAL)       72 MPH    0845 PM 12/18   10359
Muddy Gap 7 SW               70 MPH    0750 PM 12/18   7379
Fort Washakie 10 W           68 MPH    0801 PM 12/18   9234
Skyline                      57 MPH    0640 PM 12/18   8500
Lander 7 NW                  55 MPH    0525 PM 12/18   5797
Elkhorn                      54 MPH    1257 PM 12/18   8084
Badwater Road                53 MPH    0630 PM 12/18   6270
Crowheart                    52 MPH    1145 PM 12/18   6137
Riverton Airport             52 MPH    0111 AM 12/19   5509

...Hot Springs County...
Boysen Peak                  61 MPH    0535 PM 12/18   7099

...Johnson County...
Buffalo Airport              64 MPH    0715 PM 12/18   4905
Story 5.5 SE (WYDOT)         61 MPH    0626 PM 12/18   4632
Buffalo 18 NW                60 MPH    0747 PM 12/18   8604
Tisdale Mountain             55 MPH    0250 PM 12/18   5557
Purdy East                   54 MPH    1100 PM 12/18   4687
Barnum 7 SW                  53 MPH    0446 PM 12/18   6439
I25 Us87 - Tisdale Divide    51 MPH    0306 PM 12/18   4990
BUFFALO                      50 MPH    0700 PM 12/18   4675

...Lincoln County...
Mount Coffin (BTAVAL)        93 MPH    0615 PM 12/18   10855

...Natrona County...
Claude Creek                 73 MPH    0420 PM 12/18   6282
Hiland 16 S                  68 MPH    0310 PM 12/18   6379
Casper 2.1 SW (WYDOT)        66 MPH    0202 PM 12/18   5462
I25 - Hat Six                65 MPH    0512 PM 12/18   5157
Coates Rd                    64 MPH    0100 PM 12/18   5866
Muddy Creek                  60 MPH    0600 PM 12/18   5571
Bar Nunn 13.6 N (WYDOT)      57 MPH    0202 PM 12/18   5656
Mills 2 NE (WYDOT)           53 MPH    0406 PM 12/18   5312
EVANSVILLE                   51 MPH    0431 PM 12/18   5187
Casper Airport               51 MPH    0611 PM 12/18   5327
Hiland 2.4 SE (WYDOT)        51 MPH    1206 AM 12/19   6115

...Park County...
Sunlight Basin 8 E (WYDOT)   85 MPH    0902 PM 12/18   8083
Dead Indian Ridge            71 MPH    0850 PM 12/18   8145
Irma Lake                    70 MPH    0740 PM 12/18   6222
Pahaska 3 E                  64 MPH    0657 PM 12/18   7500
Wood River East              62 MPH    0310 PM 12/18   7070
Cedar Mountain               58 MPH    1200 PM 12/18   7542
Shoshone Southfork           58 MPH    0100 PM 12/18   5896
Clark                        57 MPH    0145 PM 12/18   4270
Cody 10 WNW                  54 MPH    0240 PM 12/18   8400
Wapiti                       54 MPH    1205 AM 12/19   5993
Crandall                     53 MPH    0512 PM 12/18   6640

...Sublette County...
Hogsback                     54 MPH    0610 PM 12/18   9008
Cottonwood Merna             50 MPH    0700 PM 12/18   7830

...Teton County...
Jackson Hole - Summit (BTAVA 65 MPH    0500 PM 12/18   10328
Surprise Pinnacle (BTAVAL)   65 MPH    0530 PM 12/18   9770

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

$$

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Northern Rockies Radar	Riverton Radar

Pocatello	Billings

Salt Lake	Cheyenne

Road Conditions and Web Cameras

Teton Pass - Hwy 22	Alpine Junction - U.S. Hwy 26/89/191	Jackson	Togwotee Mountain Lodge

Togwotee Pass - U.S. Hwy 26	Dubois	Granite Pass - U.S. Hwy 14	Powder River Pass - U.S. Hwy 16

South Pass - Hwy 28	Cody	Buffalo - I-25/I-90 Interchange	Casper Mountain

Casper	Beaver Rim - U.S. Hwy 287	I-80 - Rock Springs	I-80 - Laramie

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