November 30 - December 2 2022 Winter Storm

Overview

A powerful low pressure system moved into the Pacific Northwest on December 1st. This storm produced heavy snow across the Central Idaho Mountains into the Upper Snake Highlands beginning November 30th. Some locations received over 2 feet of snow which was accompanied by winds gusting to 50 mph. Near whiteout conditions along with significant blowing and drifting snow was observed on December 1st, which resulted in numerous road closures across the Upper Snake Highlands.

Island Park Snowfall. Photo: Tom Bithell

Photos & Video
Radar
Storm Reports
Environment

Photo & Video

Radar


Radar simulated showing precipitation type on November 30th. This is using the 3km NAM.	Radar simulated showing precipitation type on December 1st. This is using the 3km NAM.

Storm Reports



PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE POCATELLO ID
613 AM MST SAT DEC 3 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1215 PM     SNOW             3 S SPENCER             44.34N 112.18W
12/01/2022  U0.0 INCH        CLARK              ID   DEPT OF HIGHWAYS 

            I-15 NORTHBOUND CLOSED FROM STODDARD CREEK 
            RD NORTH TO THE MONTANA STATE LINE DUE TO 
            HEAVY SNOW AND MULTIPLE MOTOR VEHICLE 
            CRASHES. CLOSURE LATER EXTENDED SOUTH TO 
            EXIT 150 IN HAMER AT 119 PM. 

0155 PM     SNOW             ISLAND PARK             44.43N 111.37W
12/01/2022  U0.0 INCH        FREMONT            ID   EMERGENCY MNGR   

            FREMONT COUNTY EMERGENCY MANAGEMENT REPORTS 
            MULTIPLE SLIDE OFFS ON US-20 IN THE ISLAND 
            PARK AREA DUE TO FALLING SNOW AND SLICK ROAD 
            CONDITIONS. 

0700 PM     SNOW             3 SSW ISLAND PARK       44.39N 111.39W
12/01/2022  U0.0 INCH        FREMONT            ID   DEPT OF HIGHWAYS 

            US-20 CLOSED FROM ASHTON NORTH TO TARGHEE 
            PASS DUE TO BLOWING AND DRIFTING SNOW ON THE 
            HIGHWAY AND POOR VISIBILITY. 

0701 PM     SNOW             12 NNW MACKS INN        44.67N 111.41W
12/01/2022  U0.0 INCH        FREMONT            ID   DEPT OF HIGHWAYS 

            ID-87 CLOSED FROM US-20 NORTH TO RAYNOLDS 
            PASS DUE TO BLOWING AND DRIFTING SNOW ON THE 
            HIGHWAY AND POOR VISIBILITY. 

1123 PM     SNOW             9 ESE POPLAR            43.55N 111.53W
12/01/2022  U0.0 INCH        BONNEVILLE         ID   DEPT OF HIGHWAYS 

            US-26 CLOSED FROM RIRIE TO SWAN VALLEY DUE 
            TO BLOWING AND DRIFTING SNOW ON THE HIGHWAY 
            AND POOR VISIBILITY. 

1143 PM     SNOW             1 WNW CLEMENTSVILLE     43.87N 111.38W
12/01/2022  U0.0 INCH        TETON              ID   DEPT OF HIGHWAYS 

            ID-33 CLOSED FROM NEWDALE TO TETONIA DUE TO 
            BLOWING AND DRIFTING SNOW ON THE HIGHWAY AND 
            POOR VISIBILITY. 

0404 AM     SNOW             2 SSW WARM RIVER        44.10N 111.34W
12/02/2022  U0.0 INCH        FREMONT            ID   DEPT OF HIGHWAYS 

            ID-47 CLOSED FROM ASHTON TO NORTHEAST OF 
            WARM RIVER DUE TO BLOWING AND DRIFTING SNOW 
            ON THE HIGHWAY AND POOR VISIBILITY. 

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1027 AM MST FRI DEC 2 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     SNOW             BELLEVUE                43.47N 114.26W
12/01/2022  M6.4 INCH        BLAINE             ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION BVUI1 BELLEVUE.

0800 AM     SNOW             BERN                    42.34N 111.39W
12/02/2022  M3.0 INCH        BEAR LAKE          ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION BERI1 BERN.

0330 PM     SNOW             7 SSE CHILLY            43.98N 113.83W
12/01/2022  M1.0 INCH        CUSTER             ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION CLYI1 7.4 S CHILLY.

0600 AM     SNOW             DOWNEY                  42.43N 112.13W
12/02/2022  M1.0 INCH        BANNOCK            ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION DWYI1 DOWNEY.

0700 AM     SNOW             4 E ST. CHARLES         42.12N 111.31W
12/02/2022  M2.0 INCH        BEAR LAKE          ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION LFTI1 3.9 E ST.
            CHARLES.

0700 AM     SNOW             STANLEY                 44.22N 114.93W
12/02/2022  M5.1 INCH        CUSTER             ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION STAI1 STANLEY.

0800 AM     SNOW             2 E SWAN VALLEY         43.44N 111.28W
12/02/2022  M2.0 INCH        BONNEVILLE         ID   CO-OP OBSERVER

            CO-OP OBSERVER STATION SWNI1 SWAN VALLEY.

0800 AM     SNOW             BELLEVUE                43.46N 114.26W
12/02/2022  M5.0 INCH        BLAINE             ID   COCORAHS

            COCORAHS STATION ID-BN-3 BELLEVUE.

0700 AM     SNOW             3 NNE DRIGGS            43.77N 111.08W
12/02/2022  M3.1 INCH        TETON              ID   COCORAHS

            COCORAHS STATION ID-TT-1 3 NNE DRIGGS.

0700 AM     SNOW             1 WNW HAILEY            43.52N 114.32W
12/02/2022  M5.0 INCH        BLAINE             ID   COCORAHS

            COCORAHS STATION ID-BN-6 HAILEY 1.0 WNW.

0700 AM     SNOW             5 N INKOM               42.88N 112.23W
12/02/2022  M3.2 INCH        BANNOCK            ID   COCORAHS

            COCORAHS STATION ID-BK-27 INKOM 5.5 N.

0710 AM     SNOW             3 NNW LAVA HOT SPRINGS  42.66N 112.02W
12/02/2022  M1.0 INCH        BANNOCK            ID   COCORAHS

            COCORAHS STATION ID-BK-26 LAVA HOT SPRINGS
            2.9 NNW.

0700 AM     SNOW             PAUL                    42.61N 113.79W
12/02/2022  M0.2 INCH        MINIDOKA           ID   COCORAHS

            COCORAHS STATION ID-MN-3 PAUL 0.4 WNW.

0700 AM     SNOW             2 SE CHUBBUCK           42.90N 112.43W
12/02/2022  M1.0 INCH        BANNOCK            ID   COCORAHS

            COCORAHS STATION ID-BK-16 POCATELLO 2.5 NE.

0700 AM     SNOW             2 NE RIGBY              43.69N 111.89W
12/02/2022  M1.5 INCH        JEFFERSON          ID   COCORAHS

            COCORAHS STATION ID-JF-1 RIGBY 1.8 NE.

0900 AM     SNOW             2 S SUGAR CITY          43.85N 111.75W
12/02/2022  M2.3 INCH        MADISON            ID   COCORAHS

            COCORAHS STATION ID-MD-5 SUGAR CITY 1.9 S.

0700 AM     SNOW             4 ENE UCON              43.62N 111.88W
12/02/2022  M2.8 INCH        BONNEVILLE         ID   COCORAHS

            COCORAHS STATION ID-BV-6 4 ENE UCON.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
946 AM MST FRI DEC 2 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     SNOW             3 ESE CHUBBUCK          42.90N 112.42W
12/02/2022  M1.2 INCH        BANNOCK            ID   NWS EMPLOYEE

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
923 AM MST FRI DEC 2 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0921 AM     HEAVY SNOW       2 SSE ISLAND PARK       44.52N 111.32W
12/02/2022  M11.0 INCH       FREMONT            ID   TRAINED SPOTTER

            NEW SNOWFALL OF 11 INCHES MEASURED SINCE 4PM ON THURSDAY.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
214 AM MST FRI DEC 2 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0133 AM     NON-TSTM WND GST 7 WSW GRACE             42.54N 111.86W
12/02/2022  M47 MPH          CARIBOU            ID   MESONET

            MESONET STATION GRAI1 GRACE.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
139 AM MST FRI DEC 2 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0115 AM     NON-TSTM WND GST 5 SSE ROBERTS           43.65N 112.10W
12/02/2022  M46 MPH          JEFFERSON          ID   DEPT OF HIGHWAYS

            OSGOOD ITD MESONET REPORTED THE STRONGEST
            GUST IN A 24 HOUR PERIOD OF 46 MPH WITH
            ONGOING BLOWING AND DRIFTING SNOW REDUCING
            VISIBILITY TO BELOW ONE QUARTER MILE EARLY
            FRIDAY MORNING.

&&


$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
136 AM MST FRI DEC 2 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 PM     NON-TSTM WND GST 4 WSW GALENA            43.84N 114.72W
12/01/2022  M57 MPH          BLAINE             ID   MESONET

            MESONET STATION SVT 3.8 W GALENA (UUNET).

0815 PM     NON-TSTM WND GST 2 NW IDAHOME            42.44N 113.41W
12/01/2022  M51 MPH          CASSIA             ID   MESONET

            MESONET STATION MALI 2 NW IDAHOME.

1239 AM     NON-TSTM WND GST 9 W BLACK PINE          42.04N 113.15W
12/02/2022  M50 MPH          CASSIA             ID   MESONET

            MESONET STATION MOFI1 MOBURG CANYON.

0950 PM     NON-TSTM WND GST 18 NNE BERENICE         44.07N 112.84W
12/01/2022  M47 MPH          CLARK              ID   MESONET

            MESONET STATION BLU BLUE DOME.

0143 PM     NON-TSTM WND GST 5 SE OBSIDIAN           43.95N 114.76W
12/01/2022  M45 MPH          CUSTER             ID   MESONET

            MESONET STATION HPFI1 HORTON PEAK.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1107 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1025 PM     SNOW             3 E POCATELLO           42.88N 112.41W
12/01/2022  M1.5 INCH        BANNOCK            ID   NWS EMPLOYEE

            STILL SNOWING.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
922 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0922 PM     HEAVY SNOW       ISLAND PARK             44.42N 111.37W
12/01/2022  M15.0 INCH       FREMONT            ID   PUBLIC

            STORM TOTAL.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
629 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0300 PM     NON-TSTM WND GST 4 NNW HUMPHREY          44.53N 112.27W
12/01/2022  M51 MPH          CLARK              ID   DEPT OF HIGHWAYS

0415 PM     NON-TSTM WND GST 1 SW POPLAR             43.61N 111.69W
12/01/2022  M48 MPH          BONNEVILLE         ID   DEPT OF HIGHWAYS

0419 PM     NON-TSTM WND GST 6 SW VICTOR             43.54N 111.20W
12/01/2022  M48 MPH          BONNEVILLE         ID   MESONET

            MESONET STATION PCRI1 PINE CREEK RAWS.

0500 PM     NON-TSTM WND GST 1 NE CLEMENTSVILLE      43.88N 111.36W
12/01/2022  M47 MPH          TETON              ID   DEPT OF HIGHWAYS

0450 PM     NON-TSTM WND GST 5 SSW CLEMENTSVILLE     43.81N 111.42W
12/01/2022  M46 MPH          MADISON            ID   MESONET

            MESONET STATION PC141 CANYON CREEK.

1045 AM     NON-TSTM WND GST 1 SW UCON               43.58N 111.97W
12/01/2022  M45 MPH          BONNEVILLE         ID   DEPT OF HIGHWAYS


&&

$$


PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
535 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0534 PM     SNOW             2 SW KETCHUM            43.66N 114.40W
12/01/2022  M5.0 INCH        BLAINE             ID   PUBLIC

            24 HR TOTAL AT THE SUN VALLEY SNOWSTAKE.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
544 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0543 PM     HEAVY SNOW       GALENA                  43.87N 114.66W
12/01/2022  M17.0 INCH       BLAINE             ID   PUBLIC

            24 HR TOTAL FROM GALENA LODGE.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
504 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0400 PM     HEAVY SNOW       2 N MACKS INN           44.52N 111.33W
12/01/2022  M6.0 INCH        FREMONT            ID   TRAINED SPOTTER

            SINCE 10AM.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
503 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 AM     HEAVY SNOW       2 N MACKS INN           44.52N 111.33W
12/01/2022  M8.0 INCH        FREMONT            ID   TRAINED SPOTTER

            SINCE NOON 11/30.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
501 PM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1200 PM     HEAVY SNOW       6 NNE ISLAND PARK       43.77N 111.77W
11/30/2022  M8.0 INCH        MADISON            ID   TRAINED SPOTTER

            CORRECTS PREVIOUS HEAVY SNOW REPORT FROM 4 N
            ARCHER.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
522 AM MST WED NOV 30 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 AM     SNOW             WAYAN                   42.98N 111.37W
11/29/2022  M8.8 INCH        CARIBOU            ID   PUBLIC

            STORM TOTAL MONDAY NIGHT THROUGH TUESDAY
            MORNING.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
525 AM MST WED NOV 30 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 AM     SNOW             1 SW BLACKFOOT          43.18N 112.36W
11/29/2022  M4.3 INCH        BINGHAM            ID   PUBLIC

            CONVERGENCE BAND SNOW TOTAL MONDAY NIGHT
            THROUGH TUESDAY MORNING.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
405 PM MST WED NOV 30 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0330 PM     SNOW             BELLEVUE                43.47N 114.26W
11/30/2022  M5.0 INCH        BLAINE             ID   CO-OP OBSERVER

            5 INCHES OF NEW SNOW SINCE 0500 MST.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
1134 PM MST WED NOV 30 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1247 PM     NON-TSTM WND GST 17 WSW MARION           42.17N 114.20W
11/30/2022  M46 MPH          CASSIA             ID   MESONET

            MESONET STATION CRII1 COTTON RIDGE.

&&

$$

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
530 AM MST THU DEC 1 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0132 AM     NON-TSTM WND GST 17 WSW MARION           42.17N 114.20W
12/01/2022  M65 MPH          CASSIA             ID   MESONET

            MESONET STATION CRII1 COTTON RIDGE.

0337 AM     NON-TSTM WND GST 1 S MICHAUD             42.92N 112.57W
12/01/2022  M48 MPH          POWER              ID   ASOS

            ASOS STATION KPIH POCATELLO REGIONAL
            AIRPORT.

&&

$$

Environment


Figure 1: GFS 500 mb winds & heights - upper trough moving onshore with strong southwesterly winds ahead of the trough in excess of 100 kts.	Figure 2: GFS - 700 mb winds - speeds in the 40s and 50s; providing the potential for strong gusts at the surface.	Figure 3: Cold front entering the region acting as the mechanism to bring the 700 mb winds to the surface.

Figure 4: Modeled wind speeds for the evening of December 1st when the strongest winds moved through.	Figure 5: NBM forecast storm total snowfall.	Figure 6: Snowfall totals with many higher elevations seeing over a foot of snow.

Figure 7: ECMWF Extreme Forecast Index showing high potential for excessive snowfall across the greater Yellowstone region and eastern highlands.	Figure 8: ECMWF Extreme Forecast Index showing high potential for strong winds across the upper Snake Plain, Island Park region, and eastern highlands.	Figure 9: National Weather Service Warnings and Advisories for this event.

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Active Weather Pattern for the West into the Plains

November 30 - December 2 2022 Winter Storm