Alert archive / California / Winter Storm Watches in 2021

Winter Storm Watch 1, NWS Reno, NV

January 23, 20218 counties in California; 4 counties in Nevada

NWS Reno, NV issued this winter storm watch at Jan 23, 2021, 10:01 AM PST for 8 counties in California; 4 counties in Nevada. It took effect at Jan 26, 2021, 4:00 PM PST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 23, 2021, 10:01 AM PST (18:01 UTC)
In effect from
Jan 26, 2021, 4:00 PM PST
Expired
Jan 25, 2021, 12:30 PM PST
In force
Issued by
NWS Reno, NV

Counties Alpine County, CA, El Dorado County, CA, Lassen County, CA, Mono County, CA, Nevada County, CA, Placer County, CA, Plumas County, CA, Sierra County, CA, Douglas County, NV, Lyon County, NV, Storey County, NV, Washoe County, NV

The radar

The Reno radar (KRGX), 69 km from the middle of the area, began a volume at 18:03 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

Reno, NV (KREV), launched 12:00Z, 6.0 hours before the alert went out and 162 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, Reno, NV at 12:00Z on 2021-01-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2021-01-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 km3 km6 km9 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
801 m above ground
0-6 km bulk shear
0 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

666 
WWUS45 KREV 231801
WSWREV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
1001 AM PST Sat Jan 23 2021

NVZ001-004-241815-
/O.CON.KREV.WW.Y.0002.000000T0000Z-210124T0000Z/
/O.CON.KREV.WW.Y.0003.210125T0300Z-210126T0000Z/
Mineral and Southern Lyon Counties-
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Hawthorne, Yerington, Smith Valley, 
Fernley, Fallon, Lovelock, Silver Springs, and Imlay
1001 AM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO
4 PM PST MONDAY...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory today, snow. Additional
  snow accumulations of up to one inch. For the Winter Weather
  Advisory Sunday night into Monday, snow expected. Total snow 
  accumulations of 1 to 3 inches.

* WHERE...Mineral and Southern Lyon Counties and Western Nevada 
  Basin and Range including Pyramid Lake.

* WHEN...For the first Winter Weather Advisory, until 4 PM PST 
  this afternoon. For the second Winter Weather Advisory, from 7 
  PM Sunday to 4 PM PST Monday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the Monday morning commute.

* ADDITIONAL DETAILS...Choppy and hazardous boating conditions on
  Pyramid Lake today with gusty winds up to 30 mph. Lake enhanced
  snow bands off of Pyramid Lake could impact Interstate 80 with
  localized higher totals between Sparks and Fernley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during
periods of high traffic volume. Be sure to allow extra time to
reach your destination. Leave extra space between vehicles since
it takes longer to stop on slick roadways. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ071-241815-
/O.NEW.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
/O.CON.KREV.WW.Y.0003.210125T0000Z-210125T1200Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Portola and Susanville
1001 AM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO
4 AM PST MONDAY...
...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
LATE THURSDAY NIGHT...

* CHANGES...Added Winter Storm Watch for Tuesday afternoon through
  Thursday night.

* WHAT...For the Winter Weather Advisory, snow expected. Total
  snow accumulations of 1 to 3 inches. For the Winter Storm Watch,
  heavy snow possible. Total snow accumulations of 6 to 12 inches,
  with 1 to 4 feet in the Yuba Pass and Lakes Basin Recreation
  Area. Winds could gust as high as 45 mph.

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 4 
  AM PST Monday. For the Winter Storm Watch, from Tuesday 
  afternoon through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible due to
  heavy snow and whiteout conditions Tuesday evening through
  Thursday night. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several 
days. Do you have a backup travel plan? Do you have an an 
emergency kit for your car and additional supplies for your home? 
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ072-NVZ002-241815-
/O.NEW.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
/O.CON.KREV.WW.Y.0003.210125T0000Z-210125T1800Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
1001 AM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO
10 AM PST MONDAY...
...WINTER STORM WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
LATE THURSDAY NIGHT...

* CHANGES...Added Winter Storm Watch for Tuesday afternoon through
  Thursday night.

* WHAT...For the Winter Weather Advisory, snow expected. Total
  snow accumulations of 3 to 6 inches with up to 12 inches above
  7000 feet. For the Winter Storm Watch, heavy snow possible.
  Total snow accumulations of 1 to 3 feet, with 3 to 6 feet above
  7000 feet possible. Winds could gust up to 40 in the lower
  elevations and in excess of 80 mph over ridges leading to 
  whiteout conditions.

* WHERE...Greater Lake Tahoe Area.

* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 10 
  AM PST Monday. For the Winter Storm Watch, from Tuesday 
  afternoon through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Monday morning commute.
  with very dangerous travel conditions possible Tuesday night
  through Thursday night. Strong winds could cause tree damage 
  and whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several 
days. Do you have a backup travel plan? Do you have an an 
emergency kit for your car and additional supplies for your home? 
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ003-241815-
/O.NEW.KREV.WS.A.0001.210127T0600Z-210129T0000Z/
/O.CON.KREV.WW.Y.0003.210125T0300Z-210125T1800Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
1001 AM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO
10 AM PST MONDAY...
...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH
THURSDAY AFTERNOON...

* CHANGES...Added Winter Storm Watch for Tuesday evening through
  Thursday afternoon.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 1 to 4 inches. For the Winter Storm Watch,
  heavy snow possible. Total snow accumulations of up to 8 inches
  below 5000 feet, with 8 to 16 inches above 5000 feet possible. 
  Higher amounts are possible in foothill locations along and west
  of Highway 395.

* WHERE...Greater Reno-Carson City-Minden Area.

* WHEN...For the Winter Weather Advisory, from 7 PM Sunday to 10 
  AM PST Monday. For the Winter Storm Watch, from Tuesday 
  evening through Thursday afternoon.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Monday morning commute,
  with very dangerous travel conditions possible Tuesday night 
  through Thursday night. Strong winds could cause tree damage and
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several 
days. Do you have a backup travel plan? Do you have an an 
emergency kit and tire chains for your car? Do you need to gather
extra supplies for your home? Once the storm arrives Tuesday 
afternoon, travel may be very difficult for an extended period of
time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ073-241815-
/O.NEW.KREV.WS.A.0001.210127T0600Z-210129T1200Z/
/O.CON.KREV.WW.Y.0003.210125T0300Z-210126T0000Z/
Mono County-
Including the cities of Bridgeport, Coleville, and Mammoth Lakes
1001 AM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO
4 PM PST MONDAY...
...WINTER STORM WATCH IN EFFECT FROM TUESDAY EVENING THROUGH LATE
THURSDAY NIGHT...

* CHANGES...Added Winter Storm Watch for Tuesday evening through
  Thursday night.

* WHAT...For the Winter Weather Advisory, snow expected. Total
  snow accumulations of 2 to 4 inches with up to 10 inches along
  the Sierra Crest. For the Winter Storm Watch, heavy snow
  possible. Total snow accumulations of up to 2 feet, with 2 to 4
  feet above 8000 feet possible. Winds could gust as high as 50
  mph in the lower elevations and in excess of 80 mph over Sierra
  ridges leading to whiteout conditions.

* WHERE...Mono County.

* WHEN...For the Winter Weather Advisory, from 7 PM Sunday to 4 
  PM PST Monday. For the Winter Storm Watch, from Tuesday 
  evening through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the morning or evening
  commute. Gusty winds could lead to tree damage and whiteout
  conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several 
days. Do you have a backup travel plan? Do you have an an 
emergency kit for your car and additional supplies for your home? 
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

http://www.weather.gov/reno
4 follow-up statements
643 
WWUS45 KREV 240022
WSWREV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
422 PM PST Sat Jan 23 2021

NVZ001-004-250000-
/O.EXP.KREV.WW.Y.0002.000000T0000Z-210124T0000Z/
/O.CON.KREV.WW.Y.0003.210125T0300Z-210126T0000Z/
Mineral and Southern Lyon Counties-
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Hawthorne, Yerington, Smith Valley, 
Fernley, Fallon, Lovelock, Silver Springs, and Imlay
422 PM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO
4 PM PST MONDAY... 

* CHANGES...None.

* WHAT...Snow expected. Total snow accumulations of 1 to 3 
  inches.

* WHERE...Mineral and Southern Lyon Counties and Western Nevada 
  Basin and Range including Pyramid Lake.

* WHEN...From 7 PM Sunday to 4 PM PST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Lake enhanced snow bands off of Pyramid
  Lake could impact Interstate 80 with localized higher totals
  between Sparks and Fernley.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during
periods of high traffic volume. Be sure to allow extra time to
reach your destination. Leave extra space between vehicles since
it takes longer to stop on slick roadways. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ071-250000-
/O.CON.KREV.WW.Y.0003.210125T0000Z-210125T1200Z/
/O.CON.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Portola and Susanville
422 PM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO
4 AM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH LATE THURSDAY NIGHT...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 1 to 3 inches. For the Winter Storm 
  Watch, heavy snow possible. Total snow accumulations of 6 to 
  12 inches, with 1 to 4 feet in the Yuba Pass and Lakes Basin 
  Recreation Area. Winds could gust as high as 45 mph.

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 4 AM
  PST Monday. For the Winter Storm Watch, from Tuesday afternoon
  through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible due to 
  heavy snow and whiteout conditions Tuesday evening through 
  Thursday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ072-NVZ002-250000-
/O.CON.KREV.WW.Y.0003.210125T0000Z-210125T1800Z/
/O.CON.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
422 PM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM SUNDAY TO
10 AM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH LATE THURSDAY NIGHT...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 3 to 6 inches with up to 12 inches above 
  7000 feet. For the Winter Storm Watch, heavy snow possible. 
  Total snow accumulations of 1 to 3 feet, with 3 to 6 feet 
  above 7000 feet possible. Winds could gust up to 40 in the 
  lower elevations and in excess of 80 mph over ridges leading 
  to whiteout conditions.

* WHERE...Greater Lake Tahoe Area.

* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 10
  AM PST Monday. For the Winter Storm Watch, from Tuesday
  afternoon through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the Monday morning commute. 
  with very dangerous travel conditions possible Tuesday night 
  through Thursday night. Strong winds could cause tree damage 
  and whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ003-250000-
/O.CON.KREV.WW.Y.0003.210125T0300Z-210125T1800Z/
/O.CON.KREV.WS.A.0001.210127T0600Z-210129T0000Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
422 PM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO
10 AM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING
THROUGH THURSDAY AFTERNOON...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 1 to 4 inches. For the Winter Storm 
  Watch, heavy snow possible. Total snow accumulations of up to 
  8 inches below 5000 feet, with 8 to 16 inches above 5000 feet 
  possible. Higher amounts are possible in foothill locations 
  along and west of Highway 395.

* WHERE...Greater Reno-Carson City-Minden Area.

* WHEN...For the Winter Weather Advisory, from 7 PM Sunday to 10
  AM PST Monday. For the Winter Storm Watch, from Tuesday evening
  through Thursday afternoon.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the Monday morning commute, 
  with very dangerous travel conditions possible Tuesday night 
  through Thursday night. Strong winds could cause tree damage 
  and whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit and tire chains for your car? Do you need to gather
extra supplies for your home? Once the storm arrives Tuesday
afternoon, travel may be very difficult for an extended period of
time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ073-250000-
/O.CON.KREV.WW.Y.0003.210125T0300Z-210126T0000Z/
/O.CON.KREV.WS.A.0001.210127T0600Z-210129T1200Z/
Mono County-
Including the cities of Bridgeport, Coleville, and Mammoth Lakes
422 PM PST Sat Jan 23 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM SUNDAY TO
4 PM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING
THROUGH LATE THURSDAY NIGHT...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 2 to 4 inches with up to 10 inches along 
  the Sierra Crest. For the Winter Storm Watch, heavy snow 
  possible. Total snow accumulations of up to 2 feet, with 2 to 
  4 feet above 8000 feet possible. Winds could gust as high as 
  50 mph in the lower elevations and in excess of 80 mph over 
  Sierra ridges leading to whiteout conditions.

* WHERE...Mono County.

* WHEN...For the Winter Weather Advisory, from 7 PM Sunday to 4 
  PM PST Monday. For the Winter Storm Watch, from Tuesday 
  evening through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could lead to tree damage and whiteout 
  conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

http://www.weather.gov/reno
966 
WWUS45 KREV 242107
WSWREV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
107 PM PST Sun Jan 24 2021

CAZ071-260000-
/O.CON.KREV.WW.Y.0003.210125T0000Z-210125T1200Z/
/O.CON.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Portola and Susanville
107 PM PST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 4 AM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH LATE THURSDAY NIGHT...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 1 to 3 inches. For the Winter Storm 
  Watch, heavy snow possible. Total snow accumulations of 6 to 
  12 inches, with 1 to 4 feet in the Yuba Pass and Lakes Basin 
  Recreation Area. Winds could gust as high as 45 mph.

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 4 
  AM PST Monday. For the Winter Storm Watch, from Tuesday 
  afternoon through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible due to 
  heavy snow and whiteout conditions Tuesday evening through 
  Thursday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ072-NVZ002-260000-
/O.CON.KREV.WW.Y.0003.210125T0000Z-210125T1800Z/
/O.CON.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
107 PM PST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS
AFTERNOON TO 10 AM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON
THROUGH LATE THURSDAY NIGHT...

* CHANGES...Added wording for rough waters on Lake Tahoe.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 3 to 6 inches with up to 12 inches above 
  7000 feet. For the Winter Storm Watch, heavy snow possible. 
  Total snow accumulations of 1 to 3 feet, with 3 to 6 feet 
  above 7000 feet possible. Winds could gust up to 40 in the 
  lower elevations and in excess of 80 mph over ridges leading 
  to whiteout conditions.

* WHERE...Greater Lake Tahoe Area.

* WHEN...For the Winter Weather Advisory, from 4 PM Sunday to 10 
  AM PST Monday. For the Winter Storm Watch, from Tuesday 
  afternoon through late Thursday night.

* ADDITIONAL DETAILS...Rough conditions can be expected on Lake
  Tahoe through much of the week. Gusts 30-45 mph with wave
  heights of 2 to 5 feet. 

* IMPACTS...Travel could be very difficult to impossible. The
  hazardous conditions could impact the Monday morning commute.
  Very dangerous travel conditions possible Tuesday night through
  Thursday night. Strong winds could cause tree damage and 
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ003-260000-
/O.CON.KREV.WW.Y.0003.210125T0300Z-210125T1800Z/
/O.CON.KREV.WS.A.0001.210127T0600Z-210129T0000Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
107 PM PST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 10 AM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING
THROUGH THURSDAY AFTERNOON...

* CHANGES...Added wording for increased wind potential late
  Tuesday through Wednesday in addition to some possible caveats
  with snow in lowest valleys.

* WHAT...For the Winter Weather Advisory, snow expected. Total
  snow accumulations of 1 to 4 inches. For the Winter Storm Watch,
  heavy snow possible. Total snow accumulations of up to 8 inches
  below 5000 feet, with 8 to 16 inches above 5000 feet possible.
  Higher amounts are possible in foothill locations along and west
  of Highway 395. Winds could gust up to 50 mph at times.

* WHERE...Greater Reno-Carson City-Minden Area.

* WHEN...For the Winter Weather Advisory, from 7 PM Sunday to 10 
  AM PST Monday. For the Winter Storm Watch, from Tuesday 
  evening through Thursday afternoon.

* ADDITIONAL DETAILS...Lake effect snow bands from Lake Tahoe
  could bring localized higher totals tonight into Monday morning
  from Holbrook Junction to Minden. After heavy snow Wednesday 
  morning, the lowest valleys of Western Nevada (~4800 feet and 
  below) could see a brief changeover to rain or a rain/snow mix 
  in the afternoon before returning to snow again Wednesday night.
  In addition, portions of Western Nevada may be shadowed at 
  times Wednesday and Wednesday night, including the Reno Metro 
  Area, which is when the stronger winds will surface. 

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the Monday morning commute, 
  with very dangerous travel conditions possible Tuesday night 
  through Thursday night. Strong winds could cause tree damage 
  and whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit and tire chains for your car? Do you need to gather
extra supplies for your home? Once the storm arrives Tuesday
afternoon, travel may be very difficult for an extended period of
time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ073-260000-
/O.CON.KREV.WW.Y.0003.210125T0300Z-210126T0000Z/
/O.CON.KREV.WS.A.0001.210127T0600Z-210129T1200Z/
Mono County-
Including the cities of Bridgeport, Coleville, and Mammoth Lakes
107 PM PST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 4 PM PST MONDAY...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING
THROUGH LATE THURSDAY NIGHT...

* CHANGES...Increased potential snow totals Tuesday Night through
  Thursday Night.

* WHAT...For the Winter Weather Advisory, snow expected. Total 
  snow accumulations of 2 to 4 inches with up to 10 inches along 
  the Sierra Crest. For the Winter Storm Watch, heavy snow 
  possible. Total snow accumulations of up to 3 feet, with 3 to 
  6 feet above 8000 feet possible. Winds could gust as high as 
  50 mph in the lower elevations and in excess of 80 mph over 
  Sierra ridges leading to whiteout conditions.

* WHERE...Mono County.

* WHEN...For the Winter Weather Advisory, from 7 PM Sunday to 4 
  PM PST Monday. For the Winter Storm Watch, from Tuesday 
  evening through late Thursday night.

* IMPACTS...Travel could be very difficult to impossible. The 
  hazardous conditions could impact the morning or evening 
  commute. Gusty winds could lead to tree damage and whiteout 
  conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday afternoon, travel may be difficult
or impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ001-004-260000-
/O.CON.KREV.WW.Y.0003.210125T0300Z-210126T0000Z/
Mineral and Southern Lyon Counties-
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Hawthorne, Yerington, Smith Valley, 
Fernley, Fallon, Lovelock, Silver Springs, and Imlay
107 PM PST Sun Jan 24 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 7 PM THIS
EVENING TO 4 PM PST MONDAY...

* CHANGES...Added wording for strong winds and rough waters on
  Pyramid Lake.

* WHAT...Snow expected. Total snow accumulations of 1 to 3 
  inches.

* WHERE...Mineral and Southern Lyon Counties and Western Nevada 
  Basin and Range including Pyramid Lake.

* WHEN...From 7 PM Sunday to 4 PM PST Monday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Lake enhanced snow bands off of Pyramid
  Lake could impact Interstate 80 with localized higher totals
  between Sparks and Fernley. Northwest winds with gusts to 40 mph
  are possible on Pyramid Lake leading to dangerous conditions for
  anyone on the lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during
periods of high traffic volume. Be sure to allow extra time to
reach your destination. Leave extra space between vehicles since
it takes longer to stop on slick roadways.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

http://www.weather.gov/reno
438 
WWUS45 KREV 251213
WSWREV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
413 AM PST Mon Jan 25 2021

CAZ071-260000-
/O.EXP.KREV.WW.Y.0003.000000T0000Z-210125T1200Z/
/O.UPG.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
/O.NEW.KREV.WS.W.0001.210127T0300Z-210129T1200Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Portola and Susanville
413 AM PST Mon Jan 25 2021

...WINTER STORM WARNING IN EFFECT FROM 7 PM TUESDAY TO 4 AM PST
FRIDAY...

* CHANGES...Winter Storm Watch upgraded to Winter Storm Warning.

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12
  inches, except 10 to 20 inches west of Highway 395 and 2 to 4 
  feet in the Yuba Pass and Lakes Basin Recreation Area. Winds 
  could gust as high as 45 mph. 

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...7 PM Tuesday to 4 AM PST Friday. 

* IMPACTS...Travel could be very difficult to impossible due to 
  heavy snow and whiteout conditions Tuesday evening through 
  Thursday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid travel if possible, you could be stuck in your vehicle for
many hours. If you must travel, prepare for long delays and carry
an emergency kit with extra food, water and clothing. If you stay
home, have a backup plan in case of power outages.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ072-NVZ002-260000-
/O.UPG.KREV.WS.A.0001.210127T0000Z-210129T1200Z/
/O.NEW.KREV.WS.W.0001.210127T0300Z-210129T1200Z/
/O.CON.KREV.WW.Y.0003.000000T0000Z-210125T1800Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
413 AM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...WINTER STORM WARNING IN EFFECT FROM 7 PM TUESDAY TO 4 AM PST
FRIDAY...

* CHANGES...None for the Winter Weather Advisory. Second Storm: 
  Winter Storm Watch upgraded to Winter Storm Warning.

* WHAT...For the Winter Weather Advisory, additional snow 
  accumulations of up to two inches. For the Winter Storm Warning,
  a prolonged period of heavy snow expected. Total snow 
  accumulations of 1 to 3 feet, except 3 to 6 feet above 7000 
  feet. Winds gusting up to 40 mph in lower elevations and in 
  excess of 80 mph over ridges leading to whiteout conditions. 

* WHERE...Greater Lake Tahoe Area.

* WHEN...For the Winter Weather Advisory, until 10 AM PST this 
  morning. For the Winter Storm Warning, from 7 PM Tuesday to 4 AM 
  PST Friday. 

* ADDITIONAL DETAILS...Rough conditions can be expected on Lake 
  Tahoe through much of the week. Gusts 30-45 mph with wave heights 
  of 2 to 5 feet. 

* IMPACTS...Travel could be very difficult to impossible.Very 
  dangerous travel conditions possible Tuesday night through 
  Thursday night. Strong winds could cause tree damage and 
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid travel if possible starting Tuesday evening, you could be 
stuck in your vehicle for many hours. If you must travel, prepare 
for long delays and carry an emergency kit with extra food, water 
and clothing. If you stay home, have a backup plan in case of power 
outages.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ073-260000-
/O.UPG.KREV.WS.A.0001.210127T0600Z-210129T1200Z/
/O.NEW.KREV.WS.W.0001.210127T0900Z-210129T1200Z/
/O.CON.KREV.WW.Y.0003.000000T0000Z-210126T0000Z/
Mono County-
Including the cities of Bridgeport, Coleville, and Mammoth Lakes
413 AM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
...WINTER STORM WARNING IN EFFECT FROM 1 AM WEDNESDAY TO 4 AM PST
FRIDAY...

* CHANGES...None for the Winter Weather Advisory. Second Storm: 
  Winter Storm Watch upgraded to Winter Storm Warning.

* WHAT...For the Winter Weather Advisory, additional snow
  accumulations of up to two inches. For the Winter Storm Warning,
  heavy snow expected. Total snow accumulations of up to 3 feet, 
  except 3 to 6 feet above 8000 feet. Winds could gust as high as 
  50 mph in the lower elevations and in excess of 80 mph over 
  Sierra ridges leading to whiteout conditions.

* WHERE...Mono County.

* WHEN...For the Winter Weather Advisory, until 4 PM PST this
  afternoon. For the Winter Storm Warning, from 1 AM Wednesday to
  4 AM PST Friday. 

* IMPACTS...After slick conditions this morning, travel could be
  very difficult to impossible beginning Tuesday evening. Gusty
  winds could cause tree damage. The cold wind chills as low as 
  20 below zero could cause frostbite on exposed skin in as little
  as 30 minutes.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid travel if possible beginning Tuesday evening, you could be 
stuck in your vehicle for many hours. If you must travel, prepare 
for long delays and carry an emergency kit with extra food, water 
and clothing. If you stay home, have a backup plan in case of power 
outages.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ003-260000-
/O.CON.KREV.WW.Y.0003.000000T0000Z-210125T1800Z/
/O.CON.KREV.WS.A.0001.210127T0600Z-210129T0000Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
413 AM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
...WINTER STORM WATCH REMAINS IN EFFECT FROM TUESDAY EVENING
THROUGH THURSDAY AFTERNOON...

* CHANGES...None.

* WHAT...For the Winter Weather Advisory, another inch or so of
  snow is possible this morning. For the Winter Storm Watch, 
  heavy snow possible. Total snow accumulations of 4-8 inches 
  below 5000 feet, with 8 to 16 inches above 5000 feet possible. 
  Higher amounts are possible in foothill locations along and west
  of Highway 395. Winds could gust up to 50 mph at times.

* WHERE...Greater Reno-Carson City-Minden Area.

* WHEN...For the Winter Weather Advisory, until 10 AM PST this 
  morning. For the Winter Storm Watch, from Tuesday evening through 
  Thursday afternoon.

* ADDITIONAL DETAILS...Lake effect snow bands from Lake Tahoe
  could bring localized higher totals. After heavy snow Wednesday
  morning, the lowest valleys of Western Nevada (~4800 feet and
  below) could see a changeover to rain or a rain/snow mix in the
  afternoon before returning to snow again Wednesday night. In 
  addition, portions of Western Nevada may be shadowed at times 
  Wednesday and Wednesday night, including the Reno Metro Area, 
  which is when the stronger winds will surface.

* IMPACTS...Very dangerous travel conditions Tuesday night 
  through Thursday night. Strong winds could cause tree damage and
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several 
days. Do you have a backup travel plan? Do you have an an emergency 
kit and tire chains for your car? Do you need to gather extra 
supplies for your home? Once the storm arrives Tuesday afternoon, 
travel may be very difficult for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ001-004-260000-
/O.CON.KREV.WW.Y.0003.000000T0000Z-210126T0000Z/
Mineral and Southern Lyon Counties-
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Hawthorne, Yerington, Smith Valley, 
Fernley, Fallon, Lovelock, Silver Springs, and Imlay
413 AM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...

* CHANGES...None.

* WHAT...Snow expected. Total snow accumulations of 1 to 3 inches.

* WHERE...Mineral and Southern Lyon Counties and Western Nevada 
  Basin and Range including Pyramid Lake.

* WHEN...Through 4 PM PST today.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning commute.

* ADDITIONAL DETAILS...Lake enhanced snow bands off of Pyramid Lake 
  could impact Interstate 80 with localized higher totals between 
  Sparks and Fernley today. Northwest winds with gusts to 40 mph are 
  possible on Pyramid Lake leading to dangerous conditions for 
  anyone on the lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during 
periods of high traffic volume. Be sure to allow extra time to reach 
your destination. Leave extra space between vehicles since it takes 
longer to stop on slick roadways.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

http://www.weather.gov/reno
688 
WWUS45 KREV 252030
WSWREV

URGENT - WINTER WEATHER MESSAGE
National Weather Service Reno NV
1230 PM PST Mon Jan 25 2021

CAZ073-270000-
/O.CAN.KREV.WW.Y.0003.000000T0000Z-210126T0000Z/
/O.CON.KREV.WS.W.0001.210127T0900Z-210129T1200Z/
Mono County-
Including the cities of Bridgeport, Coleville, and Mammoth 
Lakes
1230 PM PST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 1 AM WEDNESDAY TO
4 AM PST FRIDAY...

* CHANGES....Minimal snow impacts the rest of today.

* WHAT...Heavy snow expected. Total snow accumulations of 1 to 3
  feet, except 3 to 6 feet above 8000 feet. Winds gusting as high
  as 50 mph in the lower elevations and in excess of 80 mph over 
  Sierra ridges leading to whiteout conditions.

* WHERE...Mono County.

* WHEN...From 1 AM Wednesday to 4 AM PST Friday.

* IMPACTS...Travel could be very difficult to impossible beginning
  Tuesday night. Gusty winds could cause tree damage and power 
  outages. The cold wind chills as low as 20 below zero could 
  cause frostbite on exposed skin in as little as 30 minutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday night travel may be difficult or 
impossible for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ003-270000-
/O.UPG.KREV.WS.A.0001.210127T0600Z-210129T0000Z/
/O.EXB.KREV.WS.W.0001.210127T0600Z-210129T0000Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
1230 PM PST Mon Jan 25 2021

...WINTER STORM WARNING IN EFFECT FROM 10 PM TUESDAY TO 4 PM PST
THURSDAY...

* CHANGES...Upgraded to Winter Storm Warning.

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 10
  inches, with 10 to 20 inches above 5000 feet. Winds gusting as
  high as 60 mph may lead to whiteout conditions. The highest 
  totals are likely to occur in areas west of Highway 395 such as;
  Verdi, Caughlin Ranch, Somerset, Galena, the west side of 
  Carson City, and along Jack Valley and Foothill Road in Douglas 
  County.

* WHERE...Greater Reno-Carson City-Minden Area.

* WHEN...From 10 PM Tuesday to 4 PM PST Thursday.

* ADDITIONAL DETAILS...Winds may increase as early as Tuesday
  night, with snow arriving early Wednesday morning. Snowfall 
  accumulations may decrease on some valley floors Wednesday 
  afternoon. A second period of moderate to heavy snow is possible
  Wednesday night and Thursday morning. 

* IMPACTS...Very dangerous travel conditions possible early
  Wednesday and again Wednesday night into Thursday morning.
  Strong winds could cause tree damage, power outages and 
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives early Wednesday morning, travel may be 
difficult for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ070-NVZ005-270000-
/O.EXB.KREV.WS.W.0001.210127T0600Z-210129T0000Z/
Surprise Valley California-Northern Washoe County-
Including the cities of Cedarville, Fort Bidwell, Empire, 
and Gerlach
1230 PM PST Mon Jan 25 2021

...WINTER STORM WARNING IN EFFECT FROM 10 PM TUESDAY TO 4 PM PST
THURSDAY...

* CHANGES...Upgraded to Winter Storm Warning.

* WHAT...Heavy snow expected. Total snow accumulations up to 12
  inches. Winds gusting as high as 45 mph leading to whiteout
  conditions.

* WHERE...Surprise Valley California and Northern Washoe County.

* WHEN...From 10 PM Tuesday to 4 PM PST Thursday.

* IMPACTS...Travel could be very difficult to impossible.Very 
  dangerous travel conditions possible Tuesday night through 
  Thursday night. Strong winds could cause tree damage and 
  whiteout conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit for your car and additional supplies for your home?
Once the storm arrives Tuesday night, travel may be difficult for
an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

CAZ072-NVZ002-270000-
/O.NEW.KREV.WW.Y.0004.210126T0000Z-210126T1200Z/
/O.CON.KREV.WS.W.0001.210127T0300Z-210129T1200Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
1230 PM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO
4 AM PST TUESDAY...
...WINTER STORM WARNING REMAINS IN EFFECT FROM 7 PM TUESDAY TO
4 AM PST FRIDAY...

* CHANGES...Added winter weather advisory for a Lake Effect snow
  potential this evening and tonight for South Lake Tahoe.

* WHAT...For the Winter Weather Advisory this evening and tonight,
  snow expected. Total snow accumulations of up to 6 inches. For
  the Winter Storm Warning, heavy snow expected. Total snow
  accumulations of 1 to 3 feet, except 3 to 6 feet above 7000
  feet. Winds gusting up to 45 mph in lower elevations and in
  excess of 90 mph over ridges leading to whiteout conditions.

* WHERE...Greater Lake Tahoe Area.

* WHEN...For the Winter Storm Warning, from 7 PM Tuesday to 4 AM 
  PST Friday. For the Winter Weather Advisory, from 4 PM this 
  afternoon to 4 AM PST Tuesday.

* ADDITIONAL DETAILS...Rough conditions can be expected on Lake 
  Tahoe through much of the week. Gusts 30-45 mph with wave heights 
  of 2 to 5 feet. 

* IMPACTS...Travel could be very difficult to impossible Tuesday
  night through Friday morning. Very strong winds could cause tree
  damage and power outages. If you risk travel over the Sierra
  passes, you cloud be stuck in your car for several hours.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for winter driving conditions over the next several
days. Do you have a backup travel plan? Do you have an an
emergency kit and tire chains for your car? Do you need to gather
extra supplies for your home? Once the storm arrives Tuesday night,
travel may be very difficult for an extended period of time.

The latest road conditions can be obtained by calling 5 1 1.


&&

$$

CAZ071-270000-
/O.CON.KREV.WS.W.0001.210127T0300Z-210129T1200Z/
Lassen-Eastern Plumas-Eastern Sierra Counties-
Including the cities of Portola and Susanville
1230 PM PST Mon Jan 25 2021

...WINTER STORM WARNING REMAINS IN EFFECT FROM 7 PM TUESDAY TO
4 AM PST FRIDAY...

* CHANGES...None.

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 12
  inches, 10 to 20 inches in the Sierra Valley. Expect 2 to 4 
  feet in western Lassen County, Yuba Pass, and the Lakes Basin 
  Recreation Area. Winds could gust as high as 45 mph leading to 
  whiteout conditions. 

* WHERE...Lassen-Eastern Plumas-Eastern Sierra Counties.

* WHEN...From 7 PM Tuesday to 4 AM PST Friday.

* IMPACTS...Travel could be very difficult to impossible due to
  heavy snow and whiteout conditions Tuesday night through 
  Thursday night.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Avoid travel if possible, you could be stuck in your vehicle for
many hours. If you must travel, prepare for long delays and carry
an emergency kit with extra food, water and clothing. If you stay
home, have a backup plan in case of power outages.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ001-270000-
/O.NEW.KREV.WW.Y.0005.210127T1200Z-210128T0600Z/
/O.EXT.KREV.WW.Y.0003.000000T0000Z-210126T1200Z/
Mineral and Southern Lyon Counties-
Including the cities of Hawthorne, Yerington, and Smith Valley
1230 PM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 AM PST TUESDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 10 PM PST
WEDNESDAY...

* CHANGES...Extended Winter Weather Advisory until 4 AM Tuesday.

* WHAT...For the first Winter Weather Advisory, snow. Additional
  snow accumulations of up to 2 inches. For the second Winter 
  Weather Advisory, snow expected. Total snow accumulations of up 
  to 4 inches, except 8 to 16 inches in the higher elevations of 
  southern Lyon County and western Mineral County. Winds gusting 
  as high as 60 mph.

* WHERE...Mineral and Southern Lyon Counties.

* WHEN...For the first Winter Weather Advisory, until 4 AM PST 
  Tuesday. For the second Winter Weather Advisory, from 4 AM to 
  10 PM PST Wednesday.

* IMPACTS...Travel could be very difficult especially for 
  portions of Highways 338, 359, and US-6 on Wednesday. Winds 
  could cause some minor damage and whiteout conditions.

* ADDITIONAL DETAILS...Wind gusts of 50 mph or more are possible
  along Highway 95 in Mineral County on Wednesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during
periods of high traffic volume. Be sure to allow extra time to
reach your destination. Leave extra space between vehicles since
it takes longer to stop on slick roadways. 

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

NVZ004-261200-
/O.EXT.KREV.WW.Y.0003.000000T0000Z-210126T1200Z/
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Fernley, Fallon, Lovelock, 
Silver Springs, and Imlay
1230 PM PST Mon Jan 25 2021

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 AM PST TUESDAY...

* CHANGES...Extended Winter Weather Advisory until 4 AM Tuesday.

* WHAT...Snow. Additional snow accumulations of up to 4 inches
  mainly in eastern Churchill County.

* WHERE...Western Nevada Basin and Range including Pyramid Lake.

* WHEN...Until 4 AM PST Tuesday.

* IMPACTS...Plan on slippery road conditions through Tuesday
  morning.

* ADDITIONAL DETAILS...Northwest winds with gusts to 40 mph are 
  possible on Pyramid Lake leading to dangerous conditions for 
  anyone on the lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Even light snowfall causes major travel delays, especially during
periods of high traffic volume. Be sure to allow extra time to
reach your destination. Leave extra space between vehicles since
it takes longer to stop on slick roadways.

The latest road conditions can be obtained by calling 5 1 1.

&&

$$

http://www.weather.gov/reno

What forecasters said that day

The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Reno, NV wrote its last area forecast discussion before this winter storm watch went out at Jan 23, 3:32 AM PST, 6 hours 29 minutes earlier.

Area forecast discussion, Jan 23, 3:32 AM PST, 6 hours 29 minutes before
Area Forecast Discussion
National Weather Service Reno NV
332 AM PST Sat Jan 23 2021

.SYNOPSIS...

Light snow is working its way north to south through the region
this morning. Accumulations will generally be light with slick
conditions likely for west central Nevada. After a lull this
evening through Sunday afternoon, the next storm arrives with
more snow and slightly stronger winds through Monday. You may need
to consider leaving earlier for your Monday morning commute. The
most significant storm will impact the region the middle of next
week bringing ample moisture and potential for heavy snow
accumulation to the Sierra and potentially into western Nevada.

&&

.SHORT TERM...

The biggest changes were to add Winter Weather Advisories for the
Sierra from western Lassen County through Mono County, Sierra
Front of Nevada, and west-central Nevada Sunday evening through
Monday morning. Also, lingering snow chances were increased in
the wake of the passing system Monday afternoon and evening with
flow becoming more upslope along the Sierra south of Highway 50.

A band of snow is currently progressing through northern Nevada
and northeastern California this morning. At the time of this
writing the position is from around Susanville stretching
eastward across Pyramid Lake and Churchill/Pershing counties. This
deformation band is pivoting along eastern
Pershing/Churchill/Lander counties and will bring the most
precipitation to these areas. 1-4 inches of snow accumulation is
likely for west-central Nevada with higher amounts for Lander
County. Elsewhere, forecast amounts continue to hold for light
amounts generally a dusting up to 1 inch. Still, if you are out
this morning in the Reno Metro, considering giving yourself a
little more time to get to your destination as even a little snow
can cause issues on untreated road surfaces. Otherwise, northerly
flow will create hazardous boating conditions on Pyramid Lake; you
may want to consider delaying recreational activities until
tomorrow if possible.

The parent low will drag this band of precipitation south this
afternoon with a lull in snow for this evening through Sunday
afternoon. The next system will bring more consistent and
widespread chances for light to moderate snow accumulations.
Models continue to show a moisture flux into the region with low
pressure dropping down west of the Sierra. The resultant flow
regime and atmospheric moisture will allow for decent
accumulations of snow across the region and will likely be an
issue for Monday morning's commute; plan on delays. Low pressure
drops southward Monday evening lowering precipitation chances by
Tuesday morning.

Expected snow amounts Sunday night through Monday: 6 to 12 inches
along the higher Sierra, 3 to 6 inches in the Tahoe Basin, 1 to 4
inches along the Sierra Front and for west- central Nevada.
Localized higher totals will be possible where lake enhanced bands
form downwind of Lake Tahoe and Pyramid Lake. Biggest potential
hazard from lake banding would be along Interstate 80 in the
vicinity of Fernley Monday morning.

LONG TERM...Tuesday into next Weekend...

...Increasing Potential for a Significant Winter Storm Wed/Thu...
...Heavy snowfall likely across the Sierra and into Western Nevada...

As our weather transitions into an active pattern, eyes will be
on a significant winter storm targeting late Tuesday through at
least Thursday with potential reinforcing waves behind it into
next weekend. What will make this storm much more impactful is its
associated moderate atmospheric river moisture tap that looks to
push into the Sierra and into western Nevada. While confidence is
increasing in seeing our best snow totals of the season, likely
measured in feet in the Sierra, there is still some question on
the high end potential.

Initial timing of this storm targets Tuesday evening for the main
IVT moisture plume to begin moving across northern California with
heavy Sierra snowfall through much of the day on Wednesday. The
precursor storms ahead of this one will help set the stage for
having lower snow levels at the onset with colder air already in
place. This also includes western Nevada valleys which may see a
brief rise to near 4500 feet Wednesday afternoon with a rain/snow
mix possible but overall snow should be most prevalent through
the duration. That means significant snowfall totals (possibly
6-12" as early estimates) are increasingly possible for far
western Nevada valleys and foothills, with lesser but still
significant totals possible into portions of west-central Nevada.

Overall, the main question on exactly how big the snow totals could
be in the Sierra will center around the timing of how the trough
offshore digs which in turn determines if the the AR plume gets
drawn back across the Sierra on Thursday after its initial pass
on Wednesday. So far the GEFS/GFS is the most aggressive in
pivoting this moisture back across us while the EC camp is more
progressive. This leaves the QPF/snow estimates on Thursday-Friday
at a much lower confidence level.

Nonetheless, it would be wise to keep a very close eye on the
forecast as major impacts are expected across the Sierra beginning
late Tuesday and spilling into western Nevada through Wednesday.
This does have potential to be a long duration event with
reinforcing waves yielding off and on periods of moderate/heavy
snowfall through much of the remainder of next week. Also keep in
mind that if the storm turns out to trend towards the high-end of
predictions, travel could wind up being impossible at times in
the Sierra with areas of blizzard conditions and periodic road
closures. Fuentes

&&

.AVIATION...

A band of light snow will continue to drift south across west-
central Nevada with snow amounts of 1-4 inches for KLOL-KNFL-KHTH.
Best chances for accumulation will be through 18Z this morning. A
dusting to up to one inch is possible across KRNO-KCXP-KMEV.
Periods of LLWS will also be possible this morning.

Another storm will move into the region Sunday through Monday
bringing higher chances of 1-4 inches of snow for western Nevada
and 3-6 inches for Sierra terminals. Winds will be weaker, but
snow accumulations higher. IFR conditions will be more widespread.

Yet another and much stronger storm is expected for the middle of
next week with significant Sierra and western Nevada snow
accumulations possible. Periods of gusty winds are also possible
ahead of this system. Hoon/Fuentes

&&

.REV Watches/Warnings/Advisories...
NV...Winter Weather Advisory until 4 PM PST this afternoon NVZ001-004.

     Winter Weather Advisory from 7 PM Sunday to 4 PM PST Monday
     NVZ001-004.

     Winter Weather Advisory from 4 PM Sunday to 10 AM PST Monday
     NVZ002.

     Winter Weather Advisory from 7 PM Sunday to 10 AM PST Monday
     NVZ003.

CA...Winter Weather Advisory from 7 PM Sunday to 4 PM PST Monday
     CAZ073.

     Winter Weather Advisory from 4 PM Sunday to 4 AM PST Monday
     CAZ071.

     Winter Weather Advisory from 4 PM Sunday to 10 AM PST Monday
     CAZ072.

&&

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

In the hours before

Special weather statement, Jan 23, 4:31 AM PST, 5 hours 30 minutes before
Special Weather Statement
National Weather Service RENO NV
431 AM PST Sat Jan 23 2021

CAZ070>073-NVZ001>005-241245-
Surprise Valley California-Lassen-Eastern Plumas-
Eastern Sierra Counties-Greater Lake Tahoe Area-Mono County-
Mineral and Southern Lyon Counties-Greater Reno-Carson City-
Minden Area-Western Nevada Basin and Range including Pyramid Lake-
Northern Washoe County-
Including the cities of Cedarville, Eagleville, Fort Bidwell,
Portola, Susanville, Westwood, Sierraville, Loyalton,
South Lake Tahoe, Tahoe City, Truckee, Markleeville, Bridgeport,
Coleville, Lee Vining, Mammoth Lakes, Hawthorne, Yerington,
Smith Valley, Mina, Schurz, Stateline, Glenbrook,
Incline Village, Sparks, Verdi, Gardnerville, Virginia City,
Fernley, Fallon, Lovelock, Silver Springs, Nixon, Imlay, Empire,
and Gerlach
431 AM PST Sat Jan 23 2021

...SERIES OF WINTER STORMS EXPECTED THROUGH NEXT WEEK...

An active winter weather pattern will prevail through much of
next week as a series of progressively stronger winter storms
push through the Sierra and western Nevada. A significant winter
storm is looking increasingly likely by late Tuesday through at
least Thursday. Additional waves of moderate to heavy snowfall are
possible through next weekend.

Sunday night and Monday:

The next storm in line is expected to be fairly modest but will
bring several inches of accumulating snowfall to the Sierra and
portions of western Nevada. There may also be a chance for lake-
effect snow downwind from Lake Tahoe and Pyramid Lake, especially
Monday. Be prepared for periods of slick travel with chain and
snow tire requirements possible at times.

Tuesday night into Thursday:

A strong winter storm will likely bring heavy snowfall to the
Sierra with major impacts possible. Several feet of snowfall will
be possible across the Sierra during this period with low snow
levels expected from the onset. The low snow levels will also
allow western Nevada valleys to see snow a majority of the time
during this period aside from a possible rain/snow mix Wednesday
afternoon before changing back over to snowfall through Thursday.
As snow levels will remain low, travel issues are becoming
increasingly likely in western Nevada.

Also keep in mind that if the storm turns out to trend towards
the high-end of predictions, travel could wind up being impossible
at times across the Sierra with areas of blizzard conditions and
periodic road closures.

Stay tuned to the latest forecasts and discussions. The pattern
remains unsettled into at least early February with an additional
storm possible around the start of the month.

http://weather.gov/reno
Local storm report, Jan 23, 9:46 AM PST, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
946 AM PST SAT JAN 23 2021

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

0835 AM     SNOW             1 NE MOUNT ROSE SUMMIT  39.33N 119.88W
01/23/2021  E1.0 INCH        WASHOE             NV   PUBLIC

            MT ROSE SKI. THE PERIOD OF THE SNOW EVENT
            WAS 24 HOURS.

0830 AM     SNOW             3 ENE INCLINE VILLAGE   39.26N 119.92W
01/23/2021  E2.0 INCH        WASHOE             NV   PUBLIC

            DIAMOND PEAK SKI AREA. THE PERIOD OF THE
            SNOW EVENT WAS 24 HOURS.

0732 AM     SNOW             1 NNE SPARKS            39.56N 119.73W
01/23/2021  M0.5 INCH        WASHOE             NV   CO-OP OBSERVER

            THE PERIOD OF THE SNOW EVENT WAS 24 HOURS.

0922 AM     SNOW             1 NE CARSON CITY        39.18N 119.75W
01/23/2021  M0.4 INCH        CARSON CITY        NV   TRAINED SPOTTER

            THE PERIOD OF THE SNOW EVENT WAS 24 HOURS.

0836 AM     SNOW             2 SSE DOG VALLEY        39.53N 120.03W
01/23/2021  M2.5 INCH        SIERRA             CA   CO-OP OBSERVER

            0.08 LIQUID EQUIVALENT. THE PERIOD OF THE
            SNOW EVENT WAS 24 HOURS.

0905 AM     SNOW             1 NNW HOMEWOOD          39.09N 120.16W
01/23/2021  M2.0 INCH        PLACER             CA   PUBLIC

            THE PERIOD OF THE SNOW EVENT WAS 24 HOURS.

0834 AM     SNOW             1 NNW HOMEWOOD          39.09N 120.16W
01/23/2021  M4.0 INCH        PLACER             CA   PUBLIC

            3-5 INCHES OF SNOW REPORTED BY HOMEWOOD SKI
            AREA. THE PERIOD OF THE SNOW EVENT WAS 24
            HOURS.

0800 AM     SNOW             TAHOE CITY              39.17N 120.14W
01/23/2021  M1.0 INCH        PLACER             CA   CO-OP OBSERVER

            0.08 SNOW WATER EQUIVALENT. THE PERIOD OF
            THE SNOW EVENT WAS 24 HOURS.

0911 AM     SNOW             1 SSW BOCA RESERVOIR    39.39N 120.10W
01/23/2021  M1.5 INCH        NEVADA             CA   CO-OP OBSERVER

            0.08 INCH SNOW WATER EQUIVALENT. THE PERIOD
            OF THE SNOW EVENT WAS 24 HOURS.

0713 AM     SNOW             3 NNW NORTHSTAR         39.32N 120.15W
01/23/2021  M1.0 INCH        NEVADA             CA   CO-OP OBSERVER

            0.09 INCH SNOW WATER EQUIVALENT. THE PERIOD
            OF THE SNOW EVENT WAS 24 HOURS.

0935 AM     SNOW             MAMMOTH MOUNTAIN        37.65N 119.04W
01/23/2021  E3.0 INCH        MONO               CA   PUBLIC

            2-3 INCHES SNOW AT MAMMOTH MOUNTAIN SKI. THE
            PERIOD OF THE SNOW EVENT WAS 24 HOURS.

0842 AM     SNOW             1 W DOYLE               40.02N 120.12W
01/23/2021  M1.0 INCH        LASSEN             CA   TRAINED SPOTTER

            THE PERIOD OF THE SNOW EVENT WAS 24 HOURS.

0840 AM     SNOW             1 N SPAULDING           40.66N 120.78W
01/23/2021  M0.5 INCH        LASSEN             CA   TRAINED SPOTTER

            THE PERIOD OF THE SNOW EVENT WAS 24 HOURS.

0830 AM     SNOW             3 E SOUTH LAKE TAHOE    38.94N 119.93W
01/23/2021  E2.0 INCH        EL DORADO          CA   PUBLIC

            HEAVENLY SKI AREA. THE PERIOD OF THE SNOW
            EVENT WAS 24 HOURS.

&&

The office that day

Everything else NWS Reno, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 23, 3:40 AM PSTWinter Weather AdvisoryREVAlpine, El Dorado, Lassen, Mono, Nevada, Placer and 2 more3 days

Nearby

Winter Storm Watches in California, 2021Winter Storm Watches in Nevada, 2021Every winter storm watch 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.