Alert archive / Arizona / Winter Storm Warnings in 2021
Winter Storm Warning 1, NWS Flagstaff, AZ
NWS Flagstaff, AZ issued this winter storm warning at Jan 22, 2021, 2:32 AM MST for Coconino County, Navajo County, Yavapai County, Arizona. It took effect at Jan 22, 2021, 8:00 PM MST. It was in force for . No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jan 22, 2021, 2:32 AM MST (09:32 UTC)
- In effect from
- Jan 22, 2021, 8:00 PM MST
- Expired
- Jan 22, 2021, 1:29 PM MST
- In force
- Issued by
- NWS Flagstaff, AZ
Counties Coconino County, AZ, Navajo County, AZ, Yavapai County, AZ
The radar
The Flagstaff radar (KFSX), 85 km from the middle of the area, began a volume at 09:33 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.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 9.5 hours before the alert went out and 24 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.
- Mixed-layer CAPE
- 22 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 994 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
688
WWUS45 KFGZ 220932
WSWFGZ
URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
232 AM MST Fri Jan 22 2021
AZZ008-015-016-221745-
/O.NEW.KFGZ.WS.W.0001.210123T0300Z-210125T0000Z/
Yavapai County Mountains-Western Mogollon Rim-
Eastern Mogollon Rim-
Including the cities of Flagstaff and Happy Jack
232 AM MST Fri Jan 22 2021
...WINTER STORM WARNING IN EFFECT FROM 8 PM THIS EVENING TO 5 PM
MST SUNDAY ABOVE 6000 FEET...
* WHAT...Expect scattered rain, snow pellet and snow showers
throughout the day today, but especially during the afternoon.
A changeover to all snow will occur this evening as snow levels
fall into the night. Periods of snow will then continue through
Sunday. Snow shower activity may become sporadic during Saturday
afternoon and evening. The heaviest precipitation periods are
expected tonight and again Saturday night through Sunday. Total
snow accumulations 8 to 14 inches are expected above 6000 feet,
with locally higher amounts of 10 to 16 inches above 6500 feet.
* WHERE...Areas above 6000 feet near Doney Park, Flagstaff,
Forest Lakes, Heber-Overgaard, Prescott and Williams.
* WHEN...From 8 PM this evening to 5 PM MST Sunday.
* IMPACTS...Expect difficult travel conditions due to snow and
blowing snow. Area roadways will be snow packed and dangerous.
Travel times will increase and some travel may become difficult
to impossible.
* ADDITIONAL DETAILS...Areas of blowing snow above 6000 feet will
reduce visibility at times later tonight and Saturday.
Snow forecast from 8 PM Today to 5 PM Sunday:
Doney Park 6 to 10 inches Flagstaff 11 to 17 inches
Forest Lakes 10 to 16 inches Heber-Overgaard 4 to 6 inches
Prescott 3 to 5 inches Williams 9 to 15 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.
&&
$$
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/SnowTables2 follow-up statements
424
WWUS45 KFGZ 221543
WSWFGZ
URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
843 AM MST Fri Jan 22 2021
AZZ008-015-016-222300-
/O.CON.KFGZ.WS.W.0001.210123T0300Z-210125T0000Z/
Yavapai County Mountains-Western Mogollon Rim-
Eastern Mogollon Rim-
Including the cities of Flagstaff and Happy Jack
843 AM MST Fri Jan 22 2021
...WINTER STORM WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 5 PM MST SUNDAY ABOVE 6000 FEET...
* WHAT...Expect scattered rain, snow pellet and snow showers
throughout the day today, but especially during the afternoon.
A changeover to all snow will occur this evening as snow
levels fall into the night. Periods of snow will then continue
through Sunday. Snow shower activity may become sporadic
during Saturday afternoon and evening. The heaviest
precipitation periods are expected tonight and again Saturday
night through Sunday. Total snow accumulations 8 to 14 inches
are expected above 6000 feet, with locally higher amounts of
10 to 16 inches above 6500 feet.
* WHERE...Areas above 6000 feet near Doney Park, Flagstaff,
Forest Lakes, Heber-Overgaard, Prescott and Williams.
* WHEN...From 8 PM this evening to 5 PM MST Sunday.
* IMPACTS...Expect difficult travel conditions due to snow and
blowing snow. Area roadways will be snow packed and dangerous.
Travel times will increase and some travel may become
difficult to impossible.
* ADDITIONAL DETAILS...Areas of blowing snow above 6000 feet will
reduce visibility at times later tonight and Saturday.
Snow forecast from 8 PM Today to 5 PM Sunday:
Doney Park 6 to 10 inches Flagstaff 10 to 16 inches
Forest Lakes 10 to 16 inches Heber-Overgaard 4 to 6 inches
Prescott 3 to 5 inches Williams 9 to 13 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.
&&
$$
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/SnowTables400
WWUS45 KFGZ 222029
WSWFGZ
URGENT - WINTER WEATHER MESSAGE
National Weather Service Flagstaff AZ
129 PM MST Fri Jan 22 2021
AZZ008-015-016-231200-
/O.CAN.KFGZ.WS.W.0001.210123T0300Z-210125T0000Z/
/O.NEW.KFGZ.WW.Y.0001.210123T0300Z-210125T0000Z/
Yavapai County Mountains-Western Mogollon Rim-
Eastern Mogollon Rim-
Including the cities of Flagstaff and Happy Jack
129 PM MST Fri Jan 22 2021
...WINTER WEATHER ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO
5 PM MST SUNDAY ABOVE 6000 FEET...
...WINTER STORM WARNING IS CANCELLED...
* WHAT...Periods of snow will develop tonight and then continue
through Sunday. Snow shower activity may become sporadic on
Saturday during the daylight hours. The heaviest precipitation
periods are expected tonight and again Saturday night through
Sunday. Total snow accumulations 5 to 10 inches are expected
above 6000 feet, with locally higher amounts of 8 to 14 inches
above 6500 feet.
* WHERE...Areas above 6000 feet near Doney Park, Flagstaff,
Forest Lakes, Heber-Overgaard, Prescott, Prescott Valley,
Seligman and Williams.
* WHEN...From 8 PM this evening to 5 PM MST Sunday.
* IMPACTS...Expect difficult travel conditions due to snow and
blowing snow. Area roadways will be snow packed and dangerous.
Travel times will increase.
* ADDITIONAL DETAILS...Areas of blowing snow above 6000 feet will
reduce visibility at times later tonight and Saturday.
Snow forecast from 8 PM Today to 5 PM Sunday:
Doney Park 4 to 6 inches Flagstaff 7 to 11 inches
Forest Lakes 8 to 12 inches Heber-Overgaard 3 to 5 inches
Prescott 2 to 4 inches Prescott Valley 1 to 3 inches
Seligman 1 to 3 inches Williams 6 to 10 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/SnowTablesThe office that day
Everything else NWS Flagstaff, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 22, 1:29 PM MST | Winter Weather Advisory | FGZ | Apache, Coconino, Navajo, Yavapai | 64 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.