Alert archive / California / High Wind Watches in 2017

High Wind Watch 3, NWS Reno, NV

February 7, 20179 counties in California; 4 counties in Nevada

NWS Reno, NV issued this high wind watch at Feb 7, 2017, 3:51 PM PST for 9 counties in California; 4 counties in Nevada. It took effect at Feb 9, 2017, 7:00 AM PST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 7, 2017, 3:51 PM PST (23:51 UTC)
In effect from
Feb 9, 2017, 7:00 AM PST
Expired
Feb 8, 2017, 12:34 PM PST
In force
Issued by
NWS Reno, NV

Counties Alpine County, CA, El Dorado County, CA, Lassen County, CA, Modoc 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), 62 km from the middle of the area, began a volume at 23:52 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.

The nearest sounding before it

Reno, NV (KREV), launched 12:00Z, 11.9 hours before the alert went out and 164 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 2017-02-07Temperature 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 2017-02-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 404 square meters per square second.1939587897117136Sfc1 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
896 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
404 m²/s²
0-3 km storm-relative helicity
696 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

542 
WWUS75 KREV 072351
NPWREV

URGENT - WEATHER MESSAGE
National Weather Service Reno NV
351 PM PST Tue Feb 7 2017

CAZ070-071-NVZ005-081400-
/O.NEW.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Surprise Valley California-Lassen-Eastern Plumas-
Eastern Sierra Counties-Northern Washoe County-
Including the cities of Cedarville, Fort Bidwell, Portola, 
Susanville, Empire, and Gerlach
351 PM PST Tue Feb 7 2017

...HIGH WIND WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

The National Weather Service in Reno has issued a High Wind
Watch, which is in effect from Thursday morning through Thursday
evening. 

* Timing: STRONG WINDS WILL DEVELOP Thursday MORNING AND CONTINUE
  INTO EARLY THURSDAY EVENING. 

* Winds: SOUTH 20 TO 35 MPH WITH GUSTS UP TO 70 MPH.

* Impacts: PLAN FOR HAZARDOUS TRAVEL CONDITIONS FOR HIGH PROFILE
  VEHICLES ESPECIALLY ALONG highway 395 IN LASSEN COUNTY. STRONG
  TURBULENCE AND WIND SHEAR WILL IMPACT AVIATION INTERESTS IN THE
  REGION. DOWNED TREES AND POWER OUTAGES ARE POSSIBLE. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow 
these items away. The best thing to do is prepare ahead of time by
making sure you have extra food and water on hand, flashlights 
with spare batteries and/or candles in the event of a power 
outage.

&&

$$

NVZ003-081400-
/O.NEW.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
351 PM PST Tue Feb 7 2017

...HIGH WIND WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

The National Weather Service in Reno has issued a High Wind
Watch, which is in effect from Thursday morning through Thursday
evening. 

* Timing: STRONG WINDS WILL INTENSIFY ON THE RIDGES AND FOOTHILLS 
  EARLY THURSDAY MORNING WITH WINDS PICKING UP IN THE VALLEYS BY 
  DAYBREAK THURSDAY. STRONG WINDS WILL CONTINUE THROUGH EARLY 
  EVENING BEFORE DIMINISHING. 

* Winds: SOUTH TO SOUTHWEST 20 TO 40 MPH WITH GUSTS UP TO 70 MPH.
  FOR WIND PRONE AREAS SUCH AS I-580 THROUGH WASHOE VALLEY AND IN
  THE FOOTHILLS, GUSTS COULD EXCEED 90 MPH.

* Impacts: PLAN FOR HAZARDOUS TRAVEL CONDITIONS FOR HIGH PROFILE
  VEHICLES. CONSIDER DELAYING OR REROUTING TRAVEL AROUND WIND
  PRONE AREAS. STRONG TURBULENCE AND WIND SHEAR WILL IMPACT
  AVIATION INTERESTS IN THE REGION POSSIBLY RESULTING IN DELAYS OR
  CANCELLATIONS. TREES WEAKENED BY RECENT HEAVY RAIN AND SNOW ARE
  PRONE TO FALLING IN HIGH WINDS. POWER OUTAGES and property
  damage such as downed fences ARE ALSO POSSIBLE.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow 
these items away. The best thing to do is prepare ahead of time by
making sure you have extra food and water on hand, flashlights 
with spare batteries and/or candles in the event of a power 
outage.

&&

$$

CAZ072-NVZ002-081400-
/O.NEW.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
351 PM PST Tue Feb 7 2017

...HIGH WIND WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

The National Weather Service in Reno has issued a High Wind
Watch, which is in effect from Thursday morning through Thursday
evening. 

* Timing: STRONG WINDS WILL DEVELOP Thursday MORNING AND CONTINUE
  INTO EARLY THURSDAY EVENING. 

* Winds: SOUTHWEST 20 TO 35 MPH WITH GUSTS UP TO 70 MPH. RIDGE TOP
  WIND GUSTS MAY REACH 150 MPH. 

* Wave Heights on Tahoe: Wave heights 3 to 5 feet. 

* Impacts: PLAN FOR HAZARDOUS TRAVEL CONDITIONS FOR HIGH PROFILE
  VEHICLES. CONSIDER DELAYING OR REROUTING TRAVEL AROUND WIND
  PRONE AREAS. Blowing snow may reduce visibility to near whiteout
  conditions. STRONG TURBULENCE AND WIND SHEAR WILL IMPACT
  AVIATION INTERESTS IN THE REGION POSSIBLY RESULTING IN DELAYS OR
  CANCELLATIONS. TREES WEAKENED BY RECENT HEAVY RAIN AND SNOW ARE
  PRONE TO FALLING IN HIGH WINDS. POWER OUTAGES ARE ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow 
these items away. The best thing to do is prepare ahead of time by
making sure you have extra food and water on hand, flashlights 
with spare batteries and/or candles in the event of a power 
outage.

&&

$$

CAZ073-081400-
/O.NEW.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Mono County-
Including the cities of Bridgeport and Mammoth Lakes
351 PM PST Tue Feb 7 2017

...HIGH WIND WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY EVENING...

The National Weather Service in Reno has issued a High Wind
Watch, which is in effect from Thursday morning through Thursday
evening. 

* Timing: STRONG WINDS WILL DEVELOP Thursday MORNING AND CONTINUE
  INTO EARLY THURSDAY EVENING. 

* Winds: SOUTH TO SOUTHWEST 25 TO 35 MPH WITH GUSTS 70 MPH. FOR
  WIND PRONE AREAS SUCH AS HIGHWAY 395 IN MONO COUNTY, GUSTS COULD
  EXCEED 80 MPH.

* Impacts: HAZARDOUS TRAVEL CONDITIONS FOR HIGH PROFILE VEHICLES.
  CONSIDER DELAYING OR REROUTING TRAVEL, ESPECIALLY ALONG HIGHWAY
  395 WHICH can EXPERIENCe WHITE OUT CONDITIONS DUE TO WINDS and
  blowing snow. STRONG TURBULENCE AND WIND SHEAR WILL IMPACT
  AVIATION. TREES WEAKENED BY RECENT HEAVY SNOW ARE PRONE TO
  FALLING IN HIGH WINDS. POWER OUTAGES ARE ALSO POSSIBLE. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow 
these items away. The best thing to do is prepare ahead of time by
making sure you have extra food and water on hand, flashlights 
with spare batteries and/or candles in the event of a power 
outage.

&&

$$

http://weather.gov/reno
2 follow-up statements
016 
WWUS75 KREV 081311
NPWREV

URGENT - WEATHER MESSAGE
National Weather Service Reno NV
511 AM PST Wed Feb 8 2017

CAZ070-071-NVZ005-090000-
/O.CON.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Surprise Valley California-Lassen-Eastern Plumas-
Eastern Sierra Counties-Northern Washoe County-
Including the cities of Cedarville, Fort Bidwell, Portola, 
Susanville, Empire, and Gerlach
511 AM PST Wed Feb 8 2017

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING...

* Timing: Strong winds will develop Thursday morning and continue
  into early Thursday evening. 

* Winds: South 20 to 35 mph with gusts up to 70 mph. For wind
  prone areas such as Highway 395 between Susanville and the
  Nevada border, gusts could exceed 80 mph. 

* Impacts: Plan for hazardous travel conditions for high profile
  vehicles especially along Highway 395 in Lassen County. Strong
  turbulence and wind shear will impact aviation interests in the
  region. Downed trees, property damage and power outages are
  possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow
these items away. The best thing to do is prepare ahead of time
by making sure you have extra food and water on hand, flashlights
with spare batteries and/or candles in the event of a power
outage.

&&

$$

NVZ003-090000-
/O.CON.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
511 AM PST Wed Feb 8 2017

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING...

* Timing: Strong winds will intensify on the ridges and foothills
  early Thursday morning with winds picking up in the valleys by
  daybreak Thursday. Strong winds will continue through early
  evening before diminishing. 

* Winds: South to southwest 20 to 40 mph with gusts up to 70 
  mph. For wind prone areas such as I-580 through Washoe Valley 
  and in the foothills, gusts could exceed 80 mph. 

* Impacts: Plan for hazardous travel conditions for high profile
  vehicles. Consider delaying or rerouting travel around wind
  prone areas. Strong turbulence and wind shear will impact
  aviation interests in the region possibly resulting in delays or
  cancellations. Trees weakened by recent heavy rain and snow are
  prone to falling in high winds. Power outages and property
  damage such as downed fences are also possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow
these items away. The best thing to do is prepare ahead of time
by making sure you have extra food and water on hand, flashlights
with spare batteries and/or candles in the event of a power
outage.

&&

$$

CAZ072-NVZ002-090000-
/O.CON.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Greater Lake Tahoe Area-
Including the cities of South Lake Tahoe, Truckee, Stateline, 
and Incline Village
511 AM PST Wed Feb 8 2017

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING...

* Timing: Strong winds will develop Thursday morning and continue
  into early Thursday evening. 

* Winds: Southwest 20 to 35 mph with gusts up to 65 mph. Ridge top
  wind gusts may reach 150 mph.

* Wave Heights on Lake Tahoe: Wave heights 3 to 5 feet.

* Impacts: Plan for hazardous travel conditions for high profile
  vehicles. Consider delaying or rerouting travel away from wind
  prone areas. Blowing snow may reduce visibility to near whiteout
  conditions. Strong turbulence and wind shear will impact
  aviation interests in the region possibly resulting in delays or
  cancellations. Trees weakened by recent heavy rain and snow are
  prone to falling in high winds. Property damage and power
  outages are also possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow
these items away. The best thing to do is prepare ahead of time
by making sure you have extra food and water on hand, flashlights
with spare batteries and/or candles in the event of a power
outage.

&&

$$

CAZ073-090000-
/O.CON.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Mono County-
Including the cities of Bridgeport and Mammoth Lakes
511 AM PST Wed Feb 8 2017

...HIGH WIND WATCH REMAINS IN EFFECT FROM THURSDAY MORNING
THROUGH THURSDAY EVENING...

* Timing: Strong winds will develop Thursday morning and continue
  into early Thursday evening. 

* Winds: South to southwest 25 to 35 mph with gusts to 70 mph. For
  wind prone areas such as Highway 395 in Mono County, gusts could
  exceed 80 mph. 

* Impacts: Hazardous travel conditions for high profile vehicles.
  Consider delaying or rerouting travel, especially along Highway
  395 which can experience white out conditions due to winds and
  blowing snow. Strong turbulence and wind shear will impact
  aviation. Trees weakened by recent heavy snow are prone to
  falling in high winds. Property damage and power outages are
  also possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow
these items away. The best thing to do is prepare ahead of time
by making sure you have extra food and water on hand, flashlights
with spare batteries and/or candles in the event of a power
outage.

&&

$$

http://weather.gov/reno
007 
WWUS75 KREV 082034
NPWREV

URGENT - WEATHER MESSAGE
National Weather Service Reno NV
1234 PM PST Wed Feb 8 2017

CAZ072-073-NVZ002-082145-
/O.CAN.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
Greater Lake Tahoe Area-Mono County-
1234 PM PST Wed Feb 8 2017

...HIGH WIND WATCH HAS BEEN UPGRADED WITHIN A WINTER STORM WARNING...

THE HIGH WIND WATCH IN EFFECT FOR THE SIERRA ACROSS THE TAHOE 
BASIN AND MONO COUNTY HAS BEEN INCORPORATED WITH A WINTER STORM 
WARNING. HIGH WINDS ARE STILL EXPECTED ON THURSDAY. SEE THE WINTER
STORM WARNING FOR DETAILS ON EXPECTED WIND SPEEDS. 

$$

CAZ070-071-NVZ005-091400-
/O.UPG.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
/O.NEW.KREV.HW.W.0004.170209T1200Z-170210T0300Z/
Surprise Valley California-Lassen-Eastern Plumas-
Eastern Sierra Counties-Northern Washoe County-
Including the cities of Cedarville, Fort Bidwell, Portola, 
Susanville, Empire, and Gerlach
1234 PM PST Wed Feb 8 2017

...HIGH WIND WARNING IN EFFECT FROM 4 AM TO 7 PM PST THURSDAY...

The National Weather Service in Reno has issued a High Wind
Warning, which is in effect from 4 AM to 7 PM PST Thursday. This
is an upgrade of the High Wind Watch. 

* Timing: Strong winds will develop Thursday morning and 
  continue into early Thursday evening. 

* Winds: South 25 to 35 mph with gusts up to 75 mph. For wind 
  prone areas such as Highway 395 between Susanville and the 
  Nevada border, gusts could exceed 80 mph.

* Impacts: Plan for hazardous travel conditions for high 
  profile vehicles especially along Highway 395 in Lassen 
  County. Strong turbulence and wind shear will impact 
  aviation interests in the region. Downed trees, property 
  damage and power outages are possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow
these items away. The best thing to do is prepare ahead of time
by making sure you have extra food and water on hand, flashlights
with spare batteries and/or candles in the event of a power
outage.

&&

$$

NVZ003-091400-
/O.UPG.KREV.HW.A.0003.170209T1500Z-170210T0300Z/
/O.NEW.KREV.HW.W.0004.170209T1400Z-170210T0800Z/
Greater Reno-Carson City-Minden Area-
Including the cities of Sparks, Gardnerville, and Virginia City
1234 PM PST Wed Feb 8 2017

...HIGH WIND WARNING IN EFFECT FROM 6 AM THURSDAY TO MIDNIGHT PST
THURSDAY NIGHT...

The National Weather Service in Reno has issued a High Wind
Warning, which is in effect from 6 AM Thursday to midnight PST
Thursday night. This is an upgrade of the High Wind Watch. 

* Timing: Strong winds will intensify on the ridges and foothills
  early Thursday morning with downslope winds developing by
  daybreak Thursday. Strong winds will continue through the
  evening before diminishing. 

* Winds: South to southwest 30 to 40 mph with gusts up to 75 mph.
  For wind prone areas such as I-580 through Washoe Valley and in
  the foothills, gusts could reach 80 to 90 mph.

* Impacts: Trees weakened by recent heavy rain and snow are prone
  to falling in high winds. Power outages and property damage such
  as downed fences are also possible. Plan for hazardous travel
  conditions for high profile vehicles. Consider delaying or
  rerouting travel around wind prone areas. Strong turbulence and
  wind shear will impact aviation interests in the region possibly
  resulting in delays or cancellations.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time to secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow
these items away. The best thing to do is prepare ahead of time
by making sure you have extra food and water on hand, flashlights
with spare batteries and/or candles in the event of a power
outage.

&&

$$

NVZ001-004-091400-
/O.NEW.KREV.HW.W.0004.170209T1800Z-170210T0800Z/
Mineral and Southern Lyon Counties-
Western Nevada Basin and Range including Pyramid Lake-
Including the cities of Hawthorne, Yerington, Smith Valley, 
Fernley, Fallon, Lovelock, and Silver Springs
1234 PM PST Wed Feb 8 2017

...HIGH WIND WARNING IN EFFECT FROM 10 AM THURSDAY TO MIDNIGHT
PST THURSDAY NIGHT...

The National Weather Service in Reno has issued a High Wind
Warning, which is in effect from 10 AM Thursday to midnight PST
Thursday night. 

* Timing: Strong winds will develop Thursday morning and 
  continue into early Thursday evening. 

* Winds: South to Southwest 20 to 30 mph with gusts up to 65 mph.

* Winds and Waves on Pyramid Lake: South to southwest 20 to 30 mph
  with gusts up to 65 mph. Waves 2 to 5 feet with highest waves on
  northern and eastern shores. 

* Impacts: Trees weakened by recent heavy rain and snow are prone
  to falling in high winds. Power outages and property damage such
  as downed fences are also possible. Plan for hazardous travel
  conditions for high profile vehicles. Consider delaying or
  rerouting travel around wind prone areas. Strong turbulence and
  wind shear will impact aviation interests in the region possibly
  resulting in delays or cancellations.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Now is the time Secure loose outdoor items such as patio
furniture and trash cans before winds increase which could blow 
these items away. The best thing to do is prepare ahead of time by
making sure you have extra food and water on hand, flashlights 
with spare batteries and/or candles in the event of a power 
outage.

&&

$$

http://weather.gov/reno

What forecasters said that day

The local office's own words before this high wind 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 high wind watch went out at Feb 7, 3:13 PM PST, 38 minutes earlier.

Area forecast discussion, Feb 7, 3:13 PM PST, 38 minutes before
Area Forecast Discussion
National Weather Service Reno NV
313 PM PST Tue Feb 7 2017

.SYNOPSIS...

Strong Pacific storms will continue to impact the region through
Friday with periods of heavy rainfall, strong winds, and high
elevation snow. Minor flooding is possible through this evening
for small streams and urban areas in the Sierra and Sierra
Foothills. River flooding is expected for the Middle Fork of the
Feather, Susan, and Pit Rivers in northeast California.

&&

.SHORT TERM...

Moderate to strong atmospheric river (AR) storm continues to
affect the region through tonight. Currently snow levels are
hovering around 8500-9000 feet, with heavy snowfall above 9000
feet and heavy rainfall beneath. Widespread impacts have occurred
around the region today, mainly from flooding of minor streams and
urban areas from the heavy rainfall earlier in the day. In fact,
we had some very impressive rainfall amounts earlier this morning
around the Sierra and Sierra front, with rainfall amounts of
nearly 0.4" per hour. Storm totals rainfall amounts that we've
gotten in the last 36 hours have totaled around 2 to 5 inches of
rainfall in the Sierra and up to 0.25 to 1 inch around the western
Nevada Sierra front. Numerous locations have reported flooding or
mud/rock slides around the area. See our local storm report for
more information on storm damage around the area. Also, see our
latest hydrology discussion before for more details on flooding.

Snow amounts for the High Sierra have reached to 1 to 2 feet or
more since Monday morning, with come areas over 9000 feet likely
pushing near 3 feet or more. An avalanche warning from the Sierra
Avalanche Center remains in place through 7am Wednesday due to
high avalanche danger over 8500 ft elevation. Strong winds on the
Sierra ridges today have hit over 140 mph at times, creating
dangerous blizzard conditions for elevations above 8500 feet.
Mount Rose Highway was closed for most of the day today due to low
visibility from snow and high winds. The strongest winds have
subsided this afternoon, so we have cancelled the wind statements.
Gusty winds up to 35-45 mph will be possible through this evening,
with the Sierra ridges gusting to near 100 mph.

The heaviest precipitation has moved down into Mono County this
afternoon, with lighter showers continuing over the Tahoe- Reno-
Carson areas. Latest models show diminishing precipitation tonight
as the atmospheric river starts to break up temporarily and begin
to wave further north into the northern Sierra by Wednesday
morning. The AR begins to reload on Wednesday, bringing moderate
rain into the northern Sierra from Tahoe north to Lassen County.
We have increased rainfall amounts for Wednesday in the Sierra,
but also decreased rainfall amounts for the lower valleys in
western NV and northeast CA as we get some shadowing.

.Long Term...Thursday through Friday...

The very active pattern continues Thursday and Friday with another
moderate to strong Atmospheric River (AR) storm. This storm will
initiate with very strong and potentially damaging winds beginning
Thursday morning and persisting through the late afternoon. High
Wind Watches have been posted for Thursday across the Sierra and
portions of western Nevada. Heavy rainfall and high elevation snow
is also expected through Thursday with pronounced mountain shadowing
until Thursday evening.

STRONG WINDS THURSDAY:

Wind signatures Thursday morning continue to look very impressive
with very strong flow aloft combined with increased stability near
the Sierra ridgetops which can favor the development of downslope
winds. Even without a fully developed downslope signature,
mechanical mixing of strong 700mb winds of nearly 85 knots (3-4
standard deviations) could result in strong and damaging winds with
gusts between 65-75 mph with wind prone areas reaching near 90 mph.
Wind gusts across ridges could exceed 150 mph. This could be our
strongest wind event in the series of storms this week. Winds will
look to peak Thursday morning with weakening winds by Thursday
evening. These strong winds will produce travel restrictions for
high profile vehicles, periods of very low visibility in areas with
snowpack from blow snow, possible air travel delays, power outages,
life threatening boating conditions, and possible property damage
such as fence damage and tree falls.

RAIN AND SNOW:

This moderate to strong AR storm will also provide another round of
heavy rain and higher elevation snowfall Thursday into Friday. The
first portion of this storm Thursday morning and afternoon will
feature rather pronounced mountain shadowing until spillover
precipitation increases Thursday evening. Snow levels will be fairly
high through Thursday afternoon with levels mainly station above
8,000 feet and then falling below 6,000 feet by Friday morning.
Liquid equivalent precipitation looks like an additional 2-3.5
inches across the Sierra with about 0.5-1.0" across western Nevada
through the Sierra Front, and 0.25-0.33" across the Basin and Range.
This being a fairly warm system, snow accumulations will largely be
confined above 8,000 feet where an additional 2-3 feet of snowfall
is possible across the Sierra. The additional rainfall at lower
elevations will also exacerbate flooding concerns especially for
creeks, streams, urban and poor drainage areas. Some mainstem rivers
will also see significant increases in flows and some are forecasted
to reach flood stage. See the hydrological section for more details.

The main wave of heavy precipitation associated with the AR will
slide south through Mono County by early Friday morning before snow
levels drop to near western Nevada valley floors Friday evening. A
second wave of moisture will push through Friday afternoon into
evening so some light snowfall accumulations will be possible.
Fuentes

Saturday through Tuesday...
After a few residual showers Saturday morning, the pattern quiets
down for the weekend and the first half of next week as an upper
ridge builds overhead. Valley inversions will strengthen by early
next week with higher elevations warming faster than valleys as
subsidence warming impacts higher ridges first. However, despite
inversions, Tahoe valleys and most lower valleys that are snow-free
should still warm into the low to mid 50s early next week with the
intensifying mid February sun.

If you thought we were entering into a lengthy dry period, there is
at least a moderate probability that you'd be wrong. Longer range
predictions once again bring stormy weather back into northeast CA
and western NV for the latter part of next week, with atmospheric
river probabilities from the GFS ensemble showing a 45-65% chance
along the northern and central California coast by the late on the
15th and on the 16th. Snyder

&&

.AVIATION...

Except for a local pocket of snow levels down to 7000 feet near
KMMH, snow levels have risen above 8000-8500 feet this afternoon.
This has ended the threat for snowfall at terminals in northeast CA
and western NV through Thursday, with the exception of KMMH which is
expected to see a change over to rain this afternoon once
precipitation rates decrease. Widespread higher terrain obscuration
will remain for the Sierra through Wednesday with scattered to
widespread showers. Occasional higher terrain obscuration for
western NV today should dissipate tonight and Wednesday as shower
coverage diminishes.

With winds aloft remaining elevated over the next couple days,
especially through this evening and then again Wednesday night-
Thursday, turbulence can be expected to persist over and downwind of
ranges. Snyder

&&

.HYDROLOGY...

* Flood impacts to continue along the Middle Fork of the Feather and
  the Pit River into this weekend.
* Additional flooding possible for creeks, streams, urban areas and
  drainage basins Thursday and Friday.

Current rainfall rates are decreasing across the region as one
atmospheric river moves off to our south. Flood issues on creeks,
and basins will lessen this evening. However low lying areas may
remain inundated, especially the Sierra Valley, Washoe Valley and
Carson Valley. High flows on the Truckee and Carson River will be
slow to move down stream, so those along the Truckee below Derby Dam
and the Carson below Genoa should notice a significant
increase in flows tonight and early tomorrow.

For the Feather River from the Sierra Valley to Portola and the Pit
River across northwest Lassen County, flood impacts are likely to
persist though Wednesday, then become more severe on Thursday and
into Friday.

A second AR is forecast to arrive on Thursday with snow levels
running between 7000 and 9000 feet. Potential for rapid flood
impacts Thursday will again be focused on smaller basins due to
saturated soils and very efficient runoff. Precipitation rates won't
need to be very high, probably only in excess of 0.15-0.25 inch/hr,
to cause minor flood impacts. Heavy rain rates of 0.25 to 0.50 or
more are possible in the Sierra and along the Carson Range, will
likely cause more significant flooding. Main take away here is to be
ready for additional flooding the rest of this week. Brong

&&

.REV Watches/Warnings/Advisories...
NV...High Wind Watch from Thursday morning through Thursday evening
     NVZ005.

     Flood Watch through late tonight NVZ002.

     High Wind Watch from Thursday morning through Thursday evening
     NVZ002.

     Flood Watch through late tonight NVZ003.

     High Wind Watch from Thursday morning through Thursday evening
     NVZ003.

CA...Flood Watch through late tonight CAZ071.

     High Wind Watch from Thursday morning through Thursday evening
     CAZ070-071.

     Flood Watch through late tonight CAZ072-073.

     High Wind Watch from Thursday morning through Thursday evening
     CAZ073.

     High Wind Watch from Thursday morning through Thursday evening
     CAZ072.

&&

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

In the hours before

Local storm report, Feb 7, 12:02 PM PST, 3 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1202 PM PST TUE FEB 07 2017

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

0905 AM     FLOOD            3 SE BLAIRSDEN          39.74N 120.58W
02/07/2017                   PLUMAS             CA   LAW ENFORCEMENT

            CA HIGHWAY 89 IS CLOSED DUE TO FLOODING NEAR CLIO.

0945 AM     FLOOD            STEAD                   39.64N 119.88W
02/07/2017                   WASHOE             NV   BROADCAST MEDIA

            URBAN FLOODING REPORTED VIA FACEBOOK IN STEAD.

0954 AM     FLOOD            SILVER SPRINGS          39.42N 119.22W
02/07/2017                   LYON               NV   DEPT OF HIGHWAYS

            HIGHWAY 50 IS CLOSED DUE TO FLOODING FROM RAMSEY WEEKS
            CUTOFF TO THE JUNCTION OF HIGHWAY 95A.

1045 AM     FLOOD            2 SSE WASHOE CITY       39.29N 119.80W
02/07/2017                   WASHOE             NV   BROADCAST MEDIA

            OLD HIGHWAY 395 IS CLOSED IN WASHOE VALLEY DUE TO
            FLOODING

1108 AM     HEAVY RAIN       2 SSW GARDNERVILLE      38.91N 119.75W
02/07/2017  E0.00 INCH       DOUGLAS            NV   TRAINED SPOTTER

            1.75 INCHES OF STORM TOTAL RAINFALL.

1112 AM     FLOOD            NEW WASHOE CITY         39.30N 119.77W
02/07/2017                   WASHOE             NV   EMERGENCY MNGR

            MINOR FLOODING IS ONGOING ALONG EAST LAKE BLVD.

1154 AM     FLOOD            LEMMON VALLEY           39.64N 119.84W
02/07/2017                   WASHOE             NV   EMERGENCY MNGR

            WATER IS COVERING SEVERAL ROADS INCLUDING LEMMON DRIVE.

&&

BRONG

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 6, 9:04 PM PSTAreal Flood WarningREVLassen, Plumas, Sierra24 hr
Feb 7, 3:36 AM PSTRiver Flood WarningREVLassen4 days
Feb 7, 6:51 AM PSTAreal Flood WarningREVAlpine, El Dorado, Nevada, Placer12 hr
Feb 7, 6:41 AM PSTAreal Flood WarningREVDouglas, Lyon, Pershing, Storey, Washoe12 hr

Nearby

High Wind Watches in California, 2017High Wind Watches in Nevada, 2017Every high wind watch in 2017

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.