Alert archive / Arizona / Winter Storm Warnings in 2021

Winter Storm Warning 4, NWS Flagstaff, AZ

December 23, 2021Coconino County, Arizona

NWS Flagstaff, AZ issued this winter storm warning at Dec 23, 2021, 3:48 AM MST for Coconino County, Arizona. It took effect at Dec 23, 2021, 11:00 AM MST. It was in force for 36 hr. 32 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 23, 2021, 3:48 AM MST (10:48 UTC)
In effect from
Dec 23, 2021, 11:00 AM MST
Expired
Dec 24, 2021, 11:00 PM MST
In force
36 hr
Issued by
NWS Flagstaff, AZ

County Coconino County, AZ

The radar

The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 10:52 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 24, 5:00 AM MSTSNOW 3.7Bellemont (Nws Flagstaf, AZ
Dec 24, 5:00 AM MSTSNOW 3.7Flagstaff Airport, AZ
Dec 24, 5:00 AM MSTSNOW 4.2Flagstaff Airport, AZCORRECTS PREVIOUS SNOW REPORT FROM FLAGSTAFF AIRPORT. TOTAL SINCE 5 PM MST DEC 23. SNOW ONGOING.
Dec 24, 5:00 AM MSTSNOW 4.3Bellemont (Nws Flagstaf, AZCORRECTS PREVIOUS SNOW REPORT FROM BELLEMONT (NWS FLAGSTAFF). TOTAL SINCE 5 PM MST DEC 23. SNOW ONGOING.
Dec 24, 5:50 AM MSTSNOW 2.52 Wsw Downtown Flagstaf, AZ
Dec 24, 6:00 AM MSTSNOW 22 Sw Flagstaff Mall, AZ
Dec 24, 6:00 AM MSTSNOW 3.53 Nnw Downtown Flagstaf, AZ
Dec 24, 6:30 AM MSTSNOW 22 Ssw Doney Park, AZCOCORAHS STATION AZ-CN-60 FLAGSTAFF 8.0 ENE. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 6:30 AM MSTSNOW 3.82 Nnw Downtown Flagstaf, AZSTILL SNOWING AT TIME OF OBSERVATION.
Dec 24, 6:45 AM MSTSNOW 4Kachina Village, AZ
Dec 24, 7:00 AM MSTSNOW 11 Ese Doney Park, AZCOCORAHS STATION AZ-CN-77 FLAGSTAFF 10.5 ENE. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:00 AM MSTSNOW 1.81 W Flagstaff Mall, AZCOCORAHS STATION AZ-CN-46 FLAGSTAFF 4.1 NE. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:00 AM MSTSNOW 3.51 Ene Downtown Flagstaf, AZCOCORAHS STATION AZ-CN-122 FLAGSTAFF 1.3 NE. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:00 AM MSTSNOW 3.55 S Williams, AZCOCORAHS STATION AZ-CN-20 WILLIAMS 3.3 SSE. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:00 AM MSTSNOW 3.92 Nnw Flagstaff Airport, AZCOCORAHS STATION AZ-CN-33 FLAGSTAFF 2.2 SW. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:00 AM MSTSNOW 4.32 Nne Flagstaff Airport, AZCOCORAHS STATION AZ-CN-61 FLAGSTAFF 2.1 SSW. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:00 AM MSTSNOW 7.64 Nnw Arizona Snowbowl, AZ24-HR SNOWFALL: 7.6 INCHES 24-HR SWE: 0.91 INCHES SNOW DEPTH: 16.5 INCHES SNOW STARTED ABOUT 2:30P ON 12/23 AND IS SNOW THROUGHOUT THE EVENT.
Dec 24, 7:15 AM MSTSNOW 3.51 S Flagstaff Mall, AZPHOTO FROM FACEBOOK SHOWING 3.5 INCHES OF REPORTED VERY WET SNOW IN THE COUNTRY CLUB NEIGHBORHOOD. SNOW ONGOING.
Dec 24, 7:18 AM MSTSNOW 1.51 Ssw Desert View, AZCO-OP OBSERVER STATION GCEA3 GRAND CANYON VILLAGE 25 E. SNOW ONGOING AT TIME OF REPORT.
Dec 24, 7:30 AM MSTSNOW 3.52 Nnw Flagstaff Airport, AZSPOTTER C324. .88 INCHES OF LIQUID IN GAGE WITH 3.5 INCHES OF SNOW ON THE GROUND. SNOW ONGOING.
Dec 24, 7:42 AM MSTSNOW 32 Ssw Flagstaff Mall, AZSNOW ONGOING.
Dec 24, 9:00 AM MSTSNOW 2Happy Jack, AZSNOW ONGOING AT TIME OF REPORT.
Dec 24, 9:00 AM MSTSNOW 103 Wsw Arizona Snowbowl, AZSNOW ONGOING. TWITTER PHOTO REPORT.
Dec 24, 9:45 AM MSTSNOW 5Kachina Village, AZFACEBOOK REPORT. SNOW STILL FALLING AT TIME OF REPORT.
Dec 24, 9:53 AM MSTSNOW 3.61 Nne Downtown Flagstaf, AZSNOW TRANSITIONED TO RAIN AT TIME OF REPORT.
Dec 24, 10:00 AM MSTSNOW 81 E Forest Lakes, AZ0.78 INCHES RAIN OVERNIGHT 12/23 THAT TRANSITIONED TO SNOW AROUND 0500 MST. 8 INCHES OF SNOW SO FAR. SNOW ONGOING.
Dec 24, 11:00 AM MSTSNOW 4.8Bellemont (Nws Flagstaf, AZ0.5 INCHES NEW SNOWFALL 0500-1100 MST 12/24. CORRECTS PREVIOUS SNOW REPORT FROM BELLEMONT (NWS FLAGSTAFF). TOTAL SINCE 5 PM MST DEC 23. SNOW ONGOING.
Dec 24, 11:00 AM MSTSNOW 6.3Flagstaff Airport, AZ2.1 INCHES NEW SNOWFALL 0500-1100 MST DEC 24. CORRECTS PREVIOUS SNOW REPORT FROM FLAGSTAFF AIRPORT. TOTAL SINCE 5 PM MST DEC 23. SNOW ONGOING.
Dec 24, 11:45 AM MSTSNOW 5Mountainaire, AZPUBLIC REPORT WITH PHOTO FROM FACEBOOK. SNOWFALL CONTINUES AT TIME OF REPORT.
Dec 24, 12:06 PM MSTSNOW 66 N Parks, AZFACEBOOK REPORT WITH SNOW ONGOING AT TIME OF REPORT.
Dec 24, 12:30 PM MSTSNOW 7Parks, AZFACEBOOK REPORT WITH PHOTO. LIGHT SNOW SHOWERS AT TIME OF REPORT.
Dec 24, 2:14 PM MSTSNOW 101 E Forest Lakes, AZAS OF 1414 MST - 10 INCHES WITH SNOW ONGOING. CORRECT PREVIOUS REPORT. AS OF 10 AM - 0.78 INCHES RAIN OVERNIGHT 12/23 THAT TRANSITIONED TO SNOW AROUND 0500 MST. 8 INCHES OF SNOW SO FAR. SNOW ONGOING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 10.8 hours before the alert went out and 68 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 00:00Z on 2021-12-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 00:00Z on 2021-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.19395878Sfc1 km3 km6 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3099 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

023 
WWUS45 KFGZ 231048
WSWFGZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
348 AM MST Thu Dec 23 2021

AZZ004-240615-
/O.NEW.KFGZ.WS.W.0004.211223T1800Z-211225T1800Z/
Kaibab Plateau-
Including the city of Jacob Lake
348 AM MST Thu Dec 23 2021

...WINTER STORM WARNING IN EFFECT FROM 11 AM THIS MORNING TO
11 AM MST SATURDAY ABOVE 7500 FEET...

* WHAT...Heavy snow expected above 7500 feet. Total snow
  accumulations of 4-8 inches with totals up to 1-2 ft above 8000
  feet. Winds gusting as high as 40 mph.

* WHERE...Areas above 7500 feet near Jacob Lake.

* WHEN...From 11 AM this morning to 11 AM MST Saturday.

* IMPACTS...Travel could be very difficult to impossible. Patchy
  blowing snow could significantly reduce visibility. The
  hazardous conditions could impact the morning or evening
  commute.

  Snow forecast from 11 AM Today to 11 AM Saturday:

     Jacob Lake  4 to 6  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ011-240615-
/O.NEW.KFGZ.WW.Y.0012.211224T0600Z-211226T0600Z/
Chuska Mountains and Defiance Plateau-
348 AM MST Thu Dec 23 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO
11 PM MST SATURDAY ABOVE 7500 FEET...

* WHAT...Snow expected above 7500 feet. Total snow accumulations
  of 4 to 6 inches with higher accumulations up to 10 to 12 inches
  above 8000 ft. Winds gusting as high as 40-45 mph.

* WHERE...Areas above 7500 feet near Buffalo Pass.

* WHEN...From 11 PM this evening to 11 PM MST Saturday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning or evening commute.

  Snow forecast from 11 PM Today to 11 PM Saturday:

   Buffalo Pass  5 to 9  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit:
http://weather.gov/flagstaff

For a more detailed table of forecast snow amounts for counties,
reservations and roads go to:
http://weather.gov/flagstaff/SnowTables
5 follow-up statements
583 
WWUS45 KFGZ 232114
WSWFGZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
214 PM MST Thu Dec 23 2021

AZZ004-241300-
/O.CON.KFGZ.WS.W.0004.000000T0000Z-211225T1800Z/
Kaibab Plateau-
Including the city of Jacob Lake
214 PM MST Thu Dec 23 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
SATURDAY ABOVE 7500 FEET...

* WHAT...Heavy snow expected above 7500 feet. Total snow 
  accumulations of 4-8 inches with totals up to 1-2 ft above 
  8000 feet. Winds gusting as high as 40 mph.

* WHERE...Areas above 7500 feet near Jacob Lake.

* WHEN...From 11 AM this morning to 11 AM MST Saturday.

* IMPACTS...Travel could be very difficult to impossible. Patchy 
  blowing snow could significantly reduce visibility. The 
  hazardous conditions could impact the morning or evening 
  commute.

* ADDITIONAL DETAILS...

  Additional snow forecast from 1 PM Today to 11 AM Saturday:

     Jacob Lake  5 to 9  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ015-016-241300-
/O.EXB.KFGZ.WW.Y.0012.211224T0700Z-211225T0000Z/
Western Mogollon Rim-Eastern Mogollon Rim-
Including the cities of Flagstaff and Happy Jack
214 PM MST Thu Dec 23 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
5 PM MST FRIDAY ABOVE 6500 FEET...

* WHAT...Snow expected above 6500 feet. Total snow accumulations
  of 4 to 8 inches. Winds gusting as high as 40 mph.

* WHERE...Areas above 6500 feet near Doney Park, Flagstaff, Happy
  Jack and Williams.

* WHEN...From midnight tonight to 5 PM MST Friday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact Friday travel.

* ADDITIONAL DETAILS...|

  Snow forecast from midnight Tonight to 5 PM Friday:

     Doney Park       2  inches       Flagstaff  3 to 6  inches
   Forest Lakes       1  inches Heber-Overgaard       T  inches
       Williams  3 to 5  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ011-241300-
/O.CON.KFGZ.WW.Y.0012.211224T0600Z-211226T0600Z/
Chuska Mountains and Defiance Plateau-
214 PM MST Thu Dec 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 11 PM THIS
EVENING TO 11 PM MST SATURDAY ABOVE 7500 FEET...

* WHAT...Snow expected above 7500 feet. Total snow accumulations 
  of 4 to 6 inches with higher accumulations up to 10 to 12 
  inches above 8000 ft. Winds gusting as high as 40-45 mph.

* WHERE...Areas above 7500 feet near Buffalo Pass.

* WHEN...From 11 PM this evening to 11 PM MST Saturday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...

  Snow forecast from 11 PM Today to 11 PM Saturday:

   Buffalo Pass  8 to 12 inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit:
http://weather.gov/flagstaff

For a more detailed table of forecast snow amounts for counties,
reservations and roads go to:
http://weather.gov/flagstaff/SnowTables
310 
WWUS45 KFGZ 241012
WSWFGZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
312 AM MST Fri Dec 24 2021

AZZ004-251800-
/O.CON.KFGZ.WS.W.0004.000000T0000Z-211225T1800Z/
Kaibab Plateau-
Including the city of Jacob Lake
312 AM MST Fri Dec 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
SATURDAY ABOVE 7500 FEET...

* WHAT...Heavy snow above 7500 feet. Additional snow accumulations
  of 4 to 8 inches with totals up to 1-2 ft above 8000 ft. Winds 
  gusting as high as 40 mph.

* WHERE...Areas above 7500 feet near Jacob Lake.

* WHEN...Until 11 AM MST Saturday.

* IMPACTS...Travel could be very difficult to impossible. Patchy
  blowing snow could significantly reduce visibility. The
  hazardous conditions could impact the morning or evening
  commute.

  Additional snow forecast from 3 AM Today to 11 AM Saturday:

     Jacob Lake  5 to 9  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ015-016-250000-
/O.CON.KFGZ.WW.Y.0012.000000T0000Z-211225T0000Z/
Western Mogollon Rim-Eastern Mogollon Rim-
Including the cities of Flagstaff and Happy Jack
312 AM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON ABOVE 6500 FEET...

* WHAT...Snow above 6500 feet. Additional snow accumulations of up
  4 to 8 inches with locally higher totals above 7500-8000 ft.
  Winds gusting as high as 40 mph.

* WHERE...Areas above 6500 feet near Doney Park, Flagstaff, 
  Forest Lakes, Heber-Overgaard and Williams.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Travel could be very difficult. Patchy blowing snow
  could significantly reduce visibility. The hazardous conditions
  could impact the morning or evening commute.

  Additional snow forecast from 3 AM Today to 5 PM Today:

     Doney Park  0 to 1  inches       Flagstaff  4 to 6  inches
   Forest Lakes  0 to 1  inches Heber-Overgaard       0  inches
       Williams  1 to 2  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ011-260600-
/O.CON.KFGZ.WW.Y.0012.000000T0000Z-211226T0600Z/
Chuska Mountains and Defiance Plateau-
312 AM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
SATURDAY ABOVE 7500 FEET...

* WHAT...Snow above 7500 feet. Additional snow accumulations of 4
  to 6 inches with higher accumulations up to 10 to 12 inches
  above 8000 ft. Winds gusting as high as 40-45 mph.

* WHERE...Areas above 7500 feet near Buffalo Pass.

* WHEN...Until 11 PM MST Saturday.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous 
  conditions could impact the morning or evening commute.

  Additional snow forecast from 3 AM Today to 11 PM Saturday:

   Buffalo Pass  4 to 8  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit:
http://weather.gov/flagstaff

For a more detailed table of forecast snow amounts for counties,
reservations and roads go to:
http://weather.gov/flagstaff/SnowTables
693 
WWUS45 KFGZ 241615
WSWFGZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
915 AM MST Fri Dec 24 2021

AZZ004-251800-
/O.CON.KFGZ.WS.W.0004.000000T0000Z-211225T1800Z/
Kaibab Plateau-
Including the city of Jacob Lake
915 AM MST Fri Dec 24 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 11 AM MST
SATURDAY ABOVE 7500 FEET...

* WHAT...Snow showers, locally heavy at times through this 
  evening. Showers becoming more sporadic overnight. Additional 
  snow accumulations of 4 to 8 inches, with totals up to 1-2 ft 
  above 8000 ft. Winds gusting as high as 40 mph.

* WHERE...Areas above 7500 feet near Jacob Lake.

* WHEN...Until 11 AM MST Saturday.

* IMPACTS...Travel could be very difficult to impossible at times.
  Areas of blowing snow could significantly reduce visibility.

  Additional snow forecast from 9 AM Today to 11 AM Saturday:

     Jacob Lake  3 to 5  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ015-016-250000-
/O.CON.KFGZ.WW.Y.0012.000000T0000Z-211225T0000Z/
Western Mogollon Rim-Eastern Mogollon Rim-
Including the cities of Flagstaff and Happy Jack
915 AM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON ABOVE 6500 FEET...

* WHAT...Periods of rain and snow above 6500 feet, all snow above
  7000 feet. Snow showers may become heavy at times again this 
  afternoon. Additional snow accumulations of up to 4 inches above
  6500 feet, with locally higher totals above 7500-8000 ft. Winds
  gusting as high as 40 mph.

* WHERE...Areas above 6500 feet near Doney Park, Flagstaff, 
  Forest Lakes, Heber-Overgaard and Williams.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Travel could be very difficult. Patchy blowing snow 
  could significantly reduce visibility. The hazardous conditions 
  could impact the evening commute.

  Additional snow forecast from 9 AM Today to 5 PM Today:

     Doney Park  0 to 1  inches       Flagstaff  1 to 2  inches
   Forest Lakes  1 to 3  inches Heber-Overgaard       0  inches
       Williams  0 to 1  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ011-260600-
/O.CON.KFGZ.WW.Y.0012.000000T0000Z-211226T0600Z/
Chuska Mountains and Defiance Plateau-
915 AM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST
SATURDAY ABOVE 7500 FEET...

* WHAT...Periods of snow this morning becoming snow showers this 
  afternoon through Saturday. Additional snow accumulations of 3 
  to 6 inches, with locally higher accumulations up to 10 to 12 
  inches above 8000 ft. Winds gusting as high as 45 mph.

* WHERE...Areas above 7500 feet near Buffalo Pass.

* WHEN...Until 11 PM MST Saturday.

* IMPACTS...Travel could be very difficult. Areas of blowing snow
  could significantly reduce visibility.

  Additional snow forecast from 9 AM Today to 11 PM Saturday:

   Buffalo Pass  3 to 5  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit:
http://weather.gov/flagstaff

For a more detailed table of forecast snow amounts for counties,
reservations and roads go to:
http://weather.gov/flagstaff/SnowTables
983 
WWUS45 KFGZ 242059
WSWFGZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
159 PM MST Fri Dec 24 2021

AZZ004-250600-
/O.EXT.KFGZ.WS.W.0004.000000T0000Z-211225T0600Z/
Kaibab Plateau-
Including the city of Jacob Lake
159 PM MST Fri Dec 24 2021

...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING ABOVE 7500 FEET...

* WHAT...Snow showers, locally heavy at times through this
  evening. Showers becoming more sporadic overnight. Additional
  snow accumulations of 1 to 4 inches, with storm totals of 1-2
  feet above 8000 feet. Southwest winds gusting as high as 40 
  mph.

* WHERE...Areas above 7500 feet near Jacob Lake.

* WHEN...Until 11 PM MST this evening.

* IMPACTS...Travel could be very difficult to impossible at 
  times. Areas of blowing snow could significantly reduce 
  visibility.

  Additional snow forecast from 1 PM Today to 11 PM Today:

     Jacob Lake  1 to 3  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ011-250600-
/O.EXT.KFGZ.WW.Y.0012.000000T0000Z-211225T0600Z/
Chuska Mountains and Defiance Plateau-
159 PM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 11 PM MST THIS
EVENING ABOVE 7500 FEET...

* WHAT...Snow showers, locally heavy at times, slowly tapering off
  overnight. Additional snow accumulations of 1 to 4 inches, with
  10 to 12 inches above 8000 feet. Southwest winds gusting as 
  high as 45 mph.

* WHERE...Areas above 7500 feet near Buffalo Pass.

* WHEN...Until 11 PM MST this evening.

* IMPACTS...Travel could be very difficult to impossible at times.
  Areas of blowing snow could significantly reduce visibility.

  Additional snow forecast from 1 PM Today to 11 PM Today:

   Buffalo Pass  1 to 3  inches.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

AZZ015-016-250000-
/O.CON.KFGZ.WW.Y.0012.000000T0000Z-211225T0000Z/
Western Mogollon Rim-Eastern Mogollon Rim-
Including the city of Happy Jack
159 PM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS
AFTERNOON ABOVE 7000 FEET...

* WHAT...Rain and snow showers above 6500 feet, all snow above
  7000 feet. Snow showers may become heavy at times again this
  afternoon. Additional snow accumulations of up to 2 inches above
  7000 feet, with locally higher totals above 7500-8000 feet.
  Southwest winds gusting as high as 40 mph.

* WHERE...Areas above 7000 feet near Flagstaff and Forest Lakes.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Travel could be very difficult at times. Areas of
  blowing snow could reduce visibility. Snow bands may impact the
  evening commute.

  Additional snow forecast from 1 PM Today to 5 PM Today:

      Flagstaff  0 to 1  inches    Forest Lakes  0 to 1  inches
.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

&&

$$

For more information from the National Weather Service visit:
http://weather.gov/flagstaff

For a more detailed table of forecast snow amounts for counties,
reservations and roads go to:
http://weather.gov/flagstaff/SnowTables
813 
WWUS45 KFGZ 250552
WSWFGZ

URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
1052 PM MST Fri Dec 24 2021

AZZ004-250700-
/O.EXP.KFGZ.WS.W.0004.000000T0000Z-211225T0600Z/
Kaibab Plateau-
Including the city of Jacob Lake
1052 PM MST Fri Dec 24 2021

...WINTER STORM WARNING WILL EXPIRE AT 11 PM MST THIS EVENING
ABOVE 7500 FEET...

The snow across the Kaibab Plateau has ended this evening allowing
the Winter Storm Warning to expire on time. Area roadways will
likely remain slick and hazardous overnight with additional snow
showers forecast for Christmas Day.

$$

AZZ011-250700-
/O.EXP.KFGZ.WW.Y.0012.000000T0000Z-211225T0600Z/
Chuska Mountains and Defiance Plateau-
1052 PM MST Fri Dec 24 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT 11 PM MST THIS EVENING
ABOVE 7500 FEET...

The snow has ended across the region this evening allowing the
Winter Weather Advisory to expire on time. Area roadways,
including Buffalo Pass, will likely remain slick and hazardous
overnight with additional snow showers forecast later on Christmas
Day.

$$

For more information from the National Weather Service visit:
http://weather.gov/flagstaff

For a more detailed table of forecast snow amounts for counties,
reservations and roads go to:
http://weather.gov/flagstaff/SnowTables

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 23, 3:48 AM MSTWinter Weather AdvisoryFGZApache, Coconino, Navajo43 hr
Dec 23, 2:00 PM MSTWind AdvisoryFGZApache, Navajo22 hr

Nearby

Winter Storm Warnings in Arizona, 2021Every winter storm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.