Alert archive / California / River Flood Warnings in 2017
River Flood Warning 1, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this river flood warning at Jan 7, 2017, 9:12 PM PST for Santa Clara County, California. It took effect at Jan 8, 2017, 2:25 PM PST. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 7, 2017, 9:12 PM PST (05:12 UTC)
- In effect from
- Jan 8, 2017, 2:25 PM PST
- Expired
- Jan 8, 2017, 10:15 PM PST
- In force
- 8 hr
- Issued by
- NWS San Francisco Bay Area, CA
- Area
- Storm-based polygon
- Flood severity
- Minor
County Santa Clara County, CA
The radar
The San Francisco radar (KMUX), 12 km from the middle of the area, began a volume at 05:12 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 river
Written for the forecast point Guadalupe River (CA) above Almaden Expressway (GUDC1).
- Action stage
- 9 ft
- Minor stage
- 10.5 ft
- Moderate stage
- 11 ft
- Major stage
- 12 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The text
As transmitted.
662
WGUS46 KMTR 080512
FLWMTR
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA, CA
912 PM PST SAT JAN 7 2017
...The National Weather Service in the San Francisco Bay Area has
issued a flood warning for the following rivers in California...
Guadalupe River above Alamaden Expressway
Napa River Nr St Helena
Heavy rain is expected to fall across the Bay Area overnight and early tomorrow
morning, causing flood waters in the Guadalupe River and Napa River to rise
above flood stage. Flooding is expected to be minor.
CAC085-090512-
/O.NEW.KMTR.FL.W.0001.170108T2336Z-170109T0615Z/
/GUDC1.1.ER.170108T2336Z.170109T0000Z.170109T0015Z.UU/
912 PM PST SAT JAN 7 2017
The National Weather Service in the San Francisco Bay Area
Has issued a
* Flood Warning for the
Guadalupe River above Alamaden Expressway
* From Sunday afternoon until Sunday evening
* At 08PM Saturday the stage was...3.1 feet
* Minor flooding is forecast
* Flood stage is 13.0 feet
* Forecast to rise above flood stage by tomorrow afternoon and
continue to rise to near 13.2 feet by tomorrow afternoon. The river
will fall below flood stage by tomorrow evening.
* At 13.0 feet...Minor Flood Stage. Flooding begins upstream of
W.Alma Ave on east bank near the Elks Lodge. At higher stages, Alma
Ave underpass beneath CA-87 and the Belmont Ave neighborhood will
likely flood. Ross Creek begins to flood near Jarvis and Cherry
Ave. At slightly higher stages, Ross Creek will continue to flood
northward along surface streets, possibly reaching north of Capitol
Expwy/Hillsdale Ave. Canoas Creek may break out near Nightingale
Drive, spreading north and south at the confluence area.
* At 10.0 feet...Monitor Stage. SCVWD may choose to deploy flood
abatement measures at the I-280 underpass to protect downtown San
Jose. WSE of 142 NAVD88, 2916 cfs.
&&
LAT...LON 3732 12188 3726 12183 3719 12184 3724 12195
3727 12190 3732 12188
$$
CAC055-090512-
/O.NEW.KMTR.FL.W.0002.170108T1951Z-000000T0000Z/
/SHEC1.3.ER.170108T1951Z.170108T2300Z.000000T0000Z.NR/
912 PM PST SAT JAN 7 2017
The National Weather Service in the San Francisco Bay Area
Has issued a
* Flood Warning for
the Napa River Near St Helena
* From Sunday midday until Sunday evening.
* At 08PM Saturday the stage was...7.3 feet
* Record flooding is forecast
* Flood stage is 16.0 feet
* Forecast to rise above flood stage by near tomorrow noon and
continue to rise to near 18.6 feet by tomorrow afternoon.
The river will fall below flood stage by tomorrow evening.
* At 20.0 feet...Disastrous flooding across upper Napa Valley making
travel essentially impossible.
* At 19.0 feet...Major flooding across upper Napa Valley making all
travel nearly impossible. Major to disastrous flooding affecting
all towns in the reach.
* At 18.0 feet...Moderate flooding across lower areas of towns along
the reach. Widespread crop losses and erosion of land. Many primary
and most secondary roads will flood, making travel difficult to
nearly impossible in some areas.
* At 16.0 feet...Minor flooding will occur along the entire reach
including the lowest areas of towns along the reach. Many rural
areas including some primary roads and many secondary roads will
have minor flooding.
&&
LAT...LON 3860 12265 3865 12262 3849 12239 3843 12244
3852 12253 3860 12265
$$
PRECAUTIONARY/PREPAREDNESS ACTIONS...
People with interests along the river should prepare for flood
conditions and be ready to move to higher ground. Follow emergency
official instructions.
River flooding can cause additional hazards like bank collapse and
shifting channels. Avoid areas adjacent to a flooding river since the
earth underneath may be eroded. Do not let children play near
floodwaters...especially around culverts and storm drains.
Do not drive through flood prone areas...low water crossings...or go
around barricades. The road ahead may be undermined or washed out and
the water depth too great to allow your car to cross safely.
For the latest developments listen to NOAA Weather Radio or tune to
your local tv or radio station. Information can also be obtained from
the NWS website at www.wrh.noaa.gov/mtr
The next statement will be issued by 4 am local time or
sooner as conditions warrant.
&&3 follow-up statements
143
WGUS86 KMTR 081141
FLSMTR
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA, CA
340 AM PST SUN JAN 8 2017
...The Flood Warning continues for the following rivers in
California...
Carmel River at Robles Del Rio
Guadalupe River above Alamaden Expressway
Napa River near St Helena
Enhanced precipitation is expected to continue today as the cold
front develops behind the warm rain processes that continue move
through the Bay Area and Central Coast. Flooding is still expected
later today on the Carmel River, Guadalupe River, and Napa River
near St. Helena.
CAC053-091140-
/O.EXT.KMTR.FL.W.0003.170109T0140Z-000000T0000Z/
/RDRC1.1.ER.170109T0140Z.170109T0300Z.000000T0000Z.NO/
340 AM PST SUN JAN 8 2017
...Flood Warning extended until FURTHER NOTICE...The Flood Warning
continues for
The Carmel River at Robles Del Rio
* From this evening until 4 am local time Monday morning
* At 03AM Sunday the stage was 4.9 feet
* Minor flooding is forecast
* Flood stage is 9.0 feet
* Forecast to rise above flood stage by this evening and continue to
rise to near 9.2 feet by this evening.
* At 10.0 feet...The south side of Highway 1 bridge access in Carmel
will be flooded and impassable. Many low lying homes along the
entire Carmel River will have minor flooding. Low lying homes near
Camp Stephani will have moderate flooding. Homes near Schulte Road
will have minor flooding. Homes surrounding the Carmel Lagoon area
will have minor flooding.
* At 9.0 feet...Low lying homes from Camp Stephani to below Robles
del Rio will have minor flooding. Old Odello Ranch near Carmel
begins to flood.
&&
LAT...LON 3656 12193 3652 12176 3640 12154 3637 12167
3649 12179 3652 12193
$$
CAC085-090712-
/O.EXT.KMTR.FL.W.0001.170108T2225Z-170109T0712Z/
/GUDC1.1.ER.170108T2225Z.170109T0000Z.170109T0112Z.UU/
340 AM PST SUN JAN 8 2017
...Flood Warning extended until this evening...The Flood Warning
continues for
The Guadalupe River above Alamaden Expressway
* From this afternoon until this evening
* At 03AM Sunday the stage was 4.2 feet
* Minor flooding is forecast
* Flood stage is 13.0 feet
* Forecast to rise above flood stage by this afternoon and continue
to rise to near 14.2 feet by this afternoon. The river will fall
below flood stage by this evening.
* At 13.0 feet...Minor Flood Stage. Flooding begins upstream of
W.Alma Ave on east bank near the Elks Lodge. At higher stages, Alma
Ave underpass beneath CA-87 and the Belmont Ave neighborhood will
likely flood. Ross Creek begins to flood near Jarvis and Cherry
Ave. At slightly higher stages, Ross Creek will continue to flood
northward along surface streets, possibly reaching north of Capitol
Expwy/Hillsdale Ave. Canoas Creek may break out near Nightingale
Drive, spreading north and south at the confluence area.
* At 10.0 feet...Monitor Stage. SCVWD may choose to deploy flood
abatement measures at the I-280 underpass to protect downtown San
Jose. WSE of 142 NAVD88, 2916 cfs.
&&
LAT...LON 3732 12188 3726 12183 3719 12184 3724 12195
3727 12190 3732 12188
$$
CAC055-091140-
/O.EXT.KMTR.FL.W.0002.170108T1944Z-170109T1646Z/
/SHEC1.3.ER.170108T1944Z.170108T2300Z.170109T0446Z.NR/
340 AM PST SUN JAN 8 2017
...Flood Warning extended until Monday morning...The Flood Warning
continues for
The Napa River near St Helena
* From around noon today until Monday morning
* At 03AM Sunday the stage was 7.3 feet
* Moderate flooding is forecast
* Flood stage is 16.0 feet
* Forecast to rise above flood stage by around noon today and continue
to rise to near 18.9 feet by this afternoon. The river will fall
below flood stage by late this evening.
* At 19.0 feet...Major flooding across upper Napa Valley making all
travel nearly impossible. Major to disastrous flooding affecting
all towns in the reach.
* At 18.0 feet...Moderate flooding across lower areas of towns along
the reach. Widespread crop losses and erosion of land. Many primary
and most secondary roads will flood, making travel difficult to
nearly impossible in some areas.
* At 16.0 feet...Minor flooding will occur along the entire reach
including the lowest areas of towns along the reach. Many rural
areas including some primary roads and many secondary roads will
have minor flooding.
&&
LAT...LON 3860 12265 3865 12262 3849 12239 3843 12244
3852 12253 3860 12265
$$
PRECAUTIONARY/PREPAREDNESS ACTIONS...
All those affected by river conditions should remain alert for rapid
changes and for possible forecast revisions.
The next statement will be issued by 10 am or
sooner as conditions warrant.
&&479
WGUS86 KMTR 081753
FLSMTR
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA, CA
953 AM PST SUN JAN 8 2017
...The Flood Warning is cancelled for the following rivers in
California...
Carmel River at Robles Del Rio
...The Flood Warning continues for the following rivers in
California...
Guadalupe River above Alamaden Expressway
Napa River near St Helena
Napa River near Napa
Russian River at Johnsons Beach near Guerneville
.Morederate to heavy rain is possible at times today which may lead
to local flooding including along some of our rivers.
CAC053-081823-
/O.CAN.KMTR.FL.W.0003.000000T0000Z-170108T1753Z/
/RDRC1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
953 AM PST SUN JAN 8 2017
The Flood Warning is cancelled for
The Carmel River at Robles Del Rio
* Until Wednesday December 31
* At 09AM Sunday the stage was 4.9 feet
* Flood stage is 9.0 feet
* At 9.0 feet...Low lying homes from Camp Stephani to below Robles
del Rio will have minor flooding. Old Odello Ranch near Carmel
begins to flood.
&&
LAT...LON 3656 12193 3652 12176 3640 12154 3637 12167
3649 12179 3652 12193
$$
CAC085-090605-
/O.CON.KMTR.FL.W.0001.170108T2356Z-170109T0605Z/
/GUDC1.1.ER.170108T2356Z.170109T0000Z.170109T0005Z.UU/
953 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Guadalupe River above Alamaden Expressway
* From this afternoon until this evening
* At 09AM Sunday the stage was 4.3 feet
* Nonflood flooding is occurring and Minor flooding is forecast
* Flood stage is 13.0 feet
* Forecast to rise above flood stage by this afternoon and continue
to rise to near 13.1 feet by this afternoon.the river will fall
below flood stage by this afternoon.
* At 13.0 feet...Minor Flood Stage. Flooding begins upstream of
W.Alma Ave on east bank near the Elks Lodge. At higher stages, Alma
Ave underpass beneath CA-87 and the Belmont Ave neighborhood will
likely flood. Ross Creek begins to flood near Jarvis and Cherry
Ave. At slightly higher stages, Ross Creek will continue to flood
northward along surface streets, possibly reaching north of Capitol
Expwy/Hillsdale Ave. Canoas Creek may break out near Nightingale
Drive, spreading north and south at the confluence area.
* At 10.0 feet...Monitor Stage. SCVWD may choose to deploy flood
abatement measures at the I-280 underpass to protect downtown San
Jose. WSE of 142 NAVD88, 2916 cfs.
&&
LAT...LON 3732 12188 3726 12183 3719 12184 3724 12195
3727 12190 3732 12188
$$
CAC055-091624-
/O.CON.KMTR.FL.W.0002.000000T0000Z-170109T1624Z/
/SHEC1.3.ER.170108T1656Z.170108T2300Z.170109T0424Z.NR/
953 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Napa River near St Helena
* Until Monday morning
* At 09AM Sunday the stage was 16.4 feet
* Minor flooding is occurring.
* Flood stage is 16.0 feet
* The river will continue rising to near 19.7 feet by this afternoon.
The river will fall below flood stage late this evening.
* At 20.0 feet...Disastrous flooding across upper Napa Valley making
travel essentially impossible.
* At 19.0 feet...Major flooding across upper Napa Valley making all
travel nearly impossible. Major to disastrous flooding affecting
all towns in the reach.
* At 18.0 feet...Moderate flooding across lower areas of towns along
the reach. Widespread crop losses and erosion of land. Many primary
and most secondary roads will flood, making travel difficult to
nearly impossible in some areas.
* At 16.0 feet...Minor flooding will occur along the entire reach
including the lowest areas of towns along the reach. Many rural
areas including some primary roads and many secondary roads will
have minor flooding.
&&
LAT...LON 3860 12265 3865 12262 3849 12239 3843 12244
3852 12253 3860 12265
$$
CAC055-091753-
/O.CON.KMTR.FL.W.0004.170108T2340Z-170109T2222Z/
/APCC1.2.ER.170108T2340Z.170109T0400Z.170109T1022Z.NO/
953 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Napa River near Napa
* From this afternoon until Monday afternoon
* At 09AM Sunday the stage was 20.3 feet
* Nonflood flooding is occurring and moderate flooding is forecast
* Flood stage is 25.0 feet
* Forecast to rise above flood stage by this afternoon and continue
to rise to near 26.7 feet by late this evening.the river will fall
below flood stage by early tomorrow morning.
* At 27.0 feet...In the City of Napa, moderate flooding begins on the
east side of Napa River near Milliken Creek Inn.
* At 26.0 feet...Moderate flooding. In the City of Napa, flow begins
to leave the Napa River channel in the South Coombs area (north of
Imola Avenue) and the south oxbow (near Taylor Street). Crop losses
and erosion damage become serious. Moderate flood damage in lower
parts of urban areas along the reach. Transportation in the Napa
Valley becoming difficult. The flood of 2/3/1998 measured 26.72
feet.
* At 25.0 feet...Flood Stage. Flooding of lowest parts of towns in
reach begins. Inundation of lowest agricultural land in Napa
Valley. Some secondary roads are inundated. Moderate damage from
bank erosion and sediment deposition throughout the reach.
* At 24.0 feet...In the City of Napa, flow begins to leave the Napa
River channel at Riverpointe (north of Lincoln Avenue).
* At 22.0 feet...Monitor Stage. In the City of Napa, the Napa River
Dry Bypass is fully inundated and flow begins to cross McKinstry
Street.
* At 20.0 feet...Erosion of lowest agricultural areas along river
begins.
&&
LAT...LON 3845 12246 3849 12239 3832 12225 3810 12227
3814 12239 3834 12237
$$
CAC097-091753-
/O.CON.KMTR.FL.W.0005.170109T0800Z-000000T0000Z/
/GUEC1.2.ER.170109T0800Z.170109T1700Z.000000T0000Z.NO/
953 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Russian River at Johnsons Beach near Guerneville
* From until FURTHER NOTICE
* At 09AM Sunday the stage was 20.2 feet
* Nonflood flooding is occurring and moderate flooding is forecast
* Flood stage is 32.0 feet
* Forecast to rise above flood stage and continue to rise to near
36.4 feet by late tomorrow morning. additional rises are possible
thereafter.
* At 37.0 feet...In Forestville Mirabel Road at River Road floods. In
Guerneville River Road east of Guerneville floods. Mill Street and
5th Street flood. In Monte Rio River Blvd east of Monte Rio floods.
* At 36.0 feet...In Forestville Mirabel Park Resort and Mirabel
trailer park flood. In Guerneville Fern Road at HWY 116 floods.
* At 35.0 feet...Moderate flooding is forecast along the lower
Russian River. Numerous businesses and residences in the lowest
sections of towns within the reach are expected to flood. In
Guerneville Brookside Resort begins to flood. More extensive
flooding occurs at Parkers Resort. In Northwood lower Redwood Drive
floods.
* At 34.0 feet...In Guerneville flooding begins at Johnsons Resort,
Parkers Resort, Creekside Resort and Riverside Park. In Northwood
lower Redwood Drive begins to flood.
* At 33.0 feet...In Guerneville the intersection of HWY 116 and Drake
Rd is closed. In Monte Rio Willow and Alder Streets flood. In
Forestville Mirabel trailer park begins to flood.
* At 32.5 feet...In Guerneville the intersecton of HWY 116 and Neeley
Rd is closed. Mays Canyon Rd by the old rodeo grounds is closed.
* At 32.0 feet...Flood stage. Minor flooding. Lower Mill Street in
Guerneville and Old Bohemian Highway in Monte Rio are expected to
flood.
* At 29.0 feet...Monitor stage.
&&
LAT...LON 3846 12314 3854 12300 3852 12287 3848 12284
3847 12298 3841 12310
$$
PRECAUTIONARY/PREPAREDNESS ACTIONS...
All those affected by river conditions should remain alert for rapid
changes and for possible forecast revisions.
The next statement will be issued by 3 pm today or
sooner as conditions warrant.
&&569
WGUS86 KMTR 081947
FLSMTR
FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA, CA
1147 AM PST SUN JAN 8 2017
...The Flood Warning is cancelled for the following rivers in
California...
Guadalupe River above Alamaden Expressway
...The Flood Warning continues for the following rivers in
California...
Napa River near St Helena
Napa River near Napa
Russian River at Johnsons Beach near Guerneville
Additional rainfall is likely throughout our region into tonight.
This could lead to flooding along local streams and rivers.
CAC085-082017-
/O.CAN.KMTR.FL.W.0001.000000T0000Z-170109T0605Z/
/GUDC1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
1147 AM PST SUN JAN 8 2017
The Flood Warning is cancelled for
The Guadalupe River above Alamaden Expressway
* At 11AM Sunday the stage was 4.5 feet
* Flood stage is 13.0 feet
* At 10.0 feet...Monitor Stage. SCVWD may choose to deploy flood
abatement measures at the I-280 underpass to protect downtown San
Jose. WSE of 142 NAVD88, 2916 cfs.
&&
LAT...LON 3732 12188 3726 12183 3719 12184 3724 12195
3727 12190 3732 12188
$$
CAC055-091624-
/O.CON.KMTR.FL.W.0002.000000T0000Z-170109T1624Z/
/SHEC1.3.ER.170108T1656Z.170108T2300Z.170109T0424Z.NR/
1147 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Napa River near St Helena
* Until Monday morning
* At 11AM Sunday the stage was 17.4 feet
* Minor flooding is occurring
* Flood stage is 16.0 feet
* The river will continue rising to near 19.7 feet by this afternoon.
The river will fall below flood stage late this evening.
* At 20.0 feet...Disastrous flooding across upper Napa Valley making
travel essentially impossible.
* At 19.0 feet...Major flooding across upper Napa Valley making all
travel nearly impossible. Major to disastrous flooding affecting
all towns in the reach.
* At 18.0 feet...Moderate flooding across lower areas of towns along
the reach. Widespread crop losses and erosion of land. Many primary
and most secondary roads will flood, making travel difficult to
nearly impossible in some areas.
* At 16.0 feet...Minor flooding will occur along the entire reach
including the lowest areas of towns along the reach. Many rural
areas including some primary roads and many secondary roads will
have minor flooding.
&&
LAT...LON 3860 12265 3865 12262 3849 12239 3843 12244
3852 12253 3860 12265
$$
CAC055-091947-
/O.CON.KMTR.FL.W.0004.170108T2340Z-170109T2222Z/
/APCC1.2.ER.170108T2340Z.170109T0400Z.170109T1022Z.NO/
1147 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Napa River near Napa
* From this afternoon until Monday afternoon
* At 11AM Sunday the stage was 22.4 feet
* Moderate flooding is forecast
* Flood stage is 25.0 feet
* Forecast to rise above flood stage by this afternoon and continue
to rise to near 26.7 feet by late this evening.the river will fall
below flood stage by early tomorrow morning.
* At 27.0 feet...In the City of Napa, moderate flooding begins on the
east side of Napa River near Milliken Creek Inn.
* At 26.0 feet...Moderate flooding. In the City of Napa, flow begins
to leave the Napa River channel in the South Coombs area (north of
Imola Avenue) and the south oxbow (near Taylor Street). Crop losses
and erosion damage become serious. Moderate flood damage in lower
parts of urban areas along the reach. Transportation in the Napa
Valley becoming difficult. The flood of 2/3/1998 measured 26.72
feet.
* At 25.0 feet...Flood Stage. Flooding of lowest parts of towns in
reach begins. Inundation of lowest agricultural land in Napa
Valley. Some secondary roads are inundated. Moderate damage from
bank erosion and sediment deposition throughout the reach.
* At 24.0 feet...In the City of Napa, flow begins to leave the Napa
River channel at Riverpointe (north of Lincoln Avenue).
* At 22.0 feet...Monitor Stage. In the City of Napa, the Napa River
Dry Bypass is fully inundated and flow begins to cross McKinstry
Street.
* At 20.0 feet...Erosion of lowest agricultural areas along river
begins.
&&
LAT...LON 3845 12246 3849 12239 3832 12225 3810 12227
3814 12239 3834 12237
$$
CAC097-091947-
/O.CON.KMTR.FL.W.0005.170109T0800Z-000000T0000Z/
/GUEC1.2.ER.170109T0800Z.170109T1900Z.000000T0000Z.NO/
1147 AM PST SUN JAN 8 2017
The Flood Warning continues for
The Russian River at Johnsons Beach near Guerneville
* From until FURTHER NOTICE
* At 11AM Sunday the stage was 22.4 feet
* Moderate flooding is forecast
* Flood stage is 32.0 feet
* Forecast to rise above flood stage and continue to rise to near
36.9 feet by near tomorrow noon. Additional rises are possible.
* At 37.0 feet...In Forestville Mirabel Road at River Road floods. In
Guerneville River Road east of Guerneville floods. Mill Street and
5th Street flood. In Monte Rio River Blvd east of Monte Rio floods.
* At 36.0 feet...In Forestville Mirabel Park Resort and Mirabel
trailer park flood. In Guerneville Fern Road at HWY 116 floods.
* At 35.0 feet...Moderate flooding is forecast along the lower
Russian River. Numerous businesses and residences in the lowest
sections of towns within the reach are expected to flood. In
Guerneville Brookside Resort begins to flood. More extensive
flooding occurs at Parkers Resort. In Northwood lower Redwood Drive
floods.
* At 34.0 feet...In Guerneville flooding begins at Johnsons Resort,
Parkers Resort, Creekside Resort and Riverside Park. In Northwood
lower Redwood Drive begins to flood.
* At 33.0 feet...In Guerneville the intersection of HWY 116 and Drake
Rd is closed. In Monte Rio Willow and Alder Streets flood. In
Forestville Mirabel trailer park begins to flood.
* At 32.5 feet...In Guerneville the intersecton of HWY 116 and Neeley
Rd is closed. Mays Canyon Rd by the old rodeo grounds is closed.
* At 32.0 feet...Flood stage. Minor flooding. Lower Mill Street in
Guerneville and Old Bohemian Highway in Monte Rio are expected to
flood.
* At 29.0 feet...Monitor stage.
&&
LAT...LON 3846 12314 3854 12300 3852 12287 3848 12284
3847 12298 3841 12310
$$
PRECAUTIONARY/PREPAREDNESS ACTIONS...
All those affected by river conditions should remain alert for rapid
changes and for possible forecast revisions.
The next statement will be issued by 3 PM today or
sooner as conditions warrant.
&&What forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this river flood warning went out at Jan 7, 4:29 PM PST, 4 hours 43 minutes earlier.
Area forecast discussion, Jan 7, 4:29 PM PST, 4 hours 43 minutes before
Area Forecast Discussion
National Weather Service San Francisco Bay Area
429 PM PST Sat Jan 7 2017
.SYNOPSIS...Rain is expected to ramp up overnight as the moisture
plume takes aim at the central coast and the San Francisco Bay
Area. Gusty winds will continue overnight and through much of the
day tomorrow. Some areas may see a lull in the wind activity this
afternoon before the main rain event moves over the area this
evening and then overnight into Sunday with periods of heavy rain.
Rain will slowly taper off from north to south by early Monday
morning. Showers to linger on Monday with cooler temperatures
before warm advection rains start Monday night into Tuesday as the
next rain storm moves onshore. The Tuesday system will be colder
and not as wet as the current system. The weather pattern remains
active with another system possible by late in the week.
&&
.DISCUSSION...as of 2:42 PM PST Sunday...Latest radar loops are
showing some increase in rain activity over the Big Sur coast at
this time, with scattered showers showing up across other areas.
Latest model guidance has the heavier precip starting by this
evening over coastal Monterey County, then spreading it farther
north over the rest of the cwa by Sunday morning. Periods of heavy
rain are expected through the day before finally tapering off
during the early Monday morning hours. Rainfall totals are still
expected to be in the 8-12 inch range across the coastal hills,
with 2-4 inches expected in lower elevations. The flash flood
watch has been expanded to include the city of San Francisco, as
well as the Big Sur Coast and southern Monterey Bay. Due to the
copious moisture source of around 1.5 tpw and relatively slow
movement of the heavy rain band, we do expect many rivers and
streams to reach or exceed bankfull as we head through Sunday
afternoon and evening. Please pay attention to the products issued
if you live near rivers such as the Napa, Russian and San Lorenzo.
Even the Pajaro and Carmel rivers which haven't flooded in years
may get close by Monday with serious rises on the Big Sur river as
well. In addition, there could be areas of coastal flooding due to
high tides Sunday morning. These combined with runoff and heavy
rains will likely cause issues.
Gusty southeast winds will persist tonight and tomorrow. Have went
ahead and extended current high wind warnings and advisories to
continue until Sunday afternoon. There may be some lulls in winds
during this afternoon and early this evening, but given the NAM12
925 mb wind speeds forecast for the area for tomorrow (in some
cases in excess of 60 knots!) felt it was prudent to keep the NPW
going.
The Storm Prediction Center has included our CWA in a convective
outlook with general thunderstorms for Sunday, thus, have added a
slight chance of thunderstorms for all areas for the daytime
Sunday. Current lightning detection networks are showing a lot of
lighting over the coastal waters near 30N/132W, so this seems
reasonable.
Cooler temperatures are expected on Monday behind the AR with
some lingering showers. The next system is expected to move in
quickly with warm advection rains starting Monday night into
Tuesday. This next system will be much cooler and be coming from
the northwest and therefore not quite as wet. Even so, there will
likely still be hydro issues from this system due to saturated
soil conditions.
Rain could linger into Weds morning, then high pressure is progged
to briefly build in over the west for a drying trend for a day or
two. Another system could arrive late in the week, but latest
medium range models aren't indicating this one will be very
strong. However, unsettled conditions are expected to persist
through the next 10 days, per long-range outlooks.
&&
.AVIATION...As of 4:30 PM PST Saturday...MVFR cigs through
Sunday. Latest hi-res models bring moderate to heavy rain into the
SFO and MRY Bay Area after 06Z with vsbys dropping at times to 1-3
miles. Moderate to heavy rains continue through Sunday afternoon
before tapering off from north to south. Winds were gusting to 40
kt this morning but have decreased slightly this afternoon.
However Wind gusts can be expected to pick up to 40-45 kt again
when the heavier rains arrive.
Vicinity of KSFO....MVFR cigs. Light rain becoming moderate to
heavy after 06Z. Southeast winds 15-20 kt gusting to 30 kt
increasing to 25-30 kt gusting to 40 kt after 10Z with low level
wind shear.
SFO Bridge Approach...Similar to KSFO.
Monterey Bay Terminals...Cigs still at or above 4000 feet this
afternoon due to rain shadow effects. Moisture over the Santa
Lucias will finally spread rain into the MRY Bay Area after 03Z
with cigs lowering to MVFR. South to southeast winds 15-20 kt
gusting to 25 kt increasing to 25-30 kt with gusts to 40 kt in the
Salinas Valley with low level wind shear.
&&
.HYDROLOGY...Many creeks and rivers are expected to flood with
this weekend's storm. With much of the rainfall expected to
strongly influence the coastal ranges from Sonoma County down
through Monterey County, expect Coast Range drainages to be hit
hard and with the first pulse of strong rain late Saturday.
Smaller creeks will likely crest in the overnight hours of
Sat/Sun. Larger rivers such as the Russian, Napa, Guadalupe,
Carmel, and Pajaro will crest on Sunday or Monday. At this point,
forecast simulations of streamflow put the following forecast
locations above flood stage this weekend/early next week: Russian
River in Guerneville, Napa River near St. Helena, and San Lorenzo
River in Felton. It is likely that many tributaries to both the
Russian and Napa Rivers will flood as well. Other creeks and
rivers in the Santa Cruz Mountains and Santa Lucia Mountains will
likely flood...stay tuned for specific information in Flash Flood
Watches, Warnings and Advisories for detailed information on flood
prone locations.
It is also likely that burn scars such as the Loma and Soberanes
will experience debris flows where rainfall rates exceed 1" per
hour. We expect these rates to develop, possibly overnight
Saturday and into Sunday. Debris flows, mudslides, and general
road-cut slope instability is highly likely in Coast Range
mountain settings outside the burn scars, although exact timing,
magnitude, and location is impossible to predict. Take heed of
local Public Works, Emergency Management, and CHP notifications to
steer clear of these areas.
Widespread urban flooding is expected from excessive rainfall,
clogged storm drains, and backwatered drainage systems. Avoid
driving through flooded roadways, and adhere to all road hazard
notifications. Drive slowly to avoid hydroplaning.
&&
.MARINE...as of 9:03 AM PST Saturday...Strong southerly gale
force winds sustained to 40 kt with gusts up to 50 kt expected
through this afternoon. A brief lull in the winds is expected
later today before the strongest winds arrive late tonight into
early Sunday. Steep fresh wind waves will maintain choppy
unsettled sea conditions.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.Tngt...Wind Advisory...CAZ006-505-508-509-513-528>530
Flash Flood Watch...CAZ006-508-509-512-513-529
Flash Flood Watch...CAZ505>507
High Wind Warning...CAZ507-511-512-517
Flash Flood Watch...CAZ517-530
GLW...Pigeon Pt to Pt Pinos 0-10 nm
GLW...Pt Pinos to Pt Piedras Blancas 0-10 nm
SCA...Pt Arena to Pt Reyes 0-10 nm
SCA...Pt Arena to Pigeon Pt 10-60 nm
GLW...Pt Arena to Pt Reyes 0-10 nm until 3 PM
GLW...Pt Arena to Pigeon Pt 10-60 nm until 3 PM
GLW...Pt Reyes to Pigeon Pt 0-10 nm
GLW...Pigeon Pt to Pt Piedras Blancas 10-60 nm
SCA...SF Bay
SCA...Mry Bay until 3 AM
GLW...Mry Bay from 3 AM
&&
PUBLIC FORECAST: Sims
AVIATION: W Pi
MARINE: CW
Visit us at www.weather.gov/sanfrancisco
Follow us on Facebook and twitter at:
www.Facebook.com/nwsbayarea
www.twitter.com/nwsbayareaHazardous weather outlook, Jan 7, 1:12 PM PST, 8 hours before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN FRANCISCO CA 112 PM PST SAT JAN 7 2017 CAZ006-505>513-516>518-528>530-082115- SAN FRANCISCO- COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE- NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS- SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST- EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND THE DIABLO RANGE- SANTA CRUZ MOUNTAINS-SANTA CLARA VALLEY INCLUDING SAN JOSE- SOUTHERN SALINAS VALLEY/ARROYO SECO AND LAKE SAN ANTONIO- SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST- MOUNTAINS OF SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT- NORTHERN SALINAS VALLEY/HOLLISTER VALLEY AND CARMEL VALLEY- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 112 PM PST SAT JAN 7 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN CALIFORNIA. .DAY ONE...THIS AFTERNOON AND TONIGHT AN ATMOSPHERIC RIVER EVENT IS SLATED TO AFFECT THE SAN FRANCISCO BAY AREA AND THE CENTRAL COAST THIS WEEKEND. HEAVY RAINS ARE EXPECTED TO BEGIN TONIGHT AND CONTINUE THROUGH SUNDAY. HIGH WIND WARNINGS ARE IN EFFECT FOR THE HIGHER TERRAIN LOCATIONS AND A WIND ADVISORY IS IN EFFECT FOR COASTAL LOCATIONS AS WELL AS SOME INLAND VALLEYS. SEE SFONPWMTR WWUS76 KMTR FOR DETAILED INFORMATION. A FLASH FLOOD WATCH IS IN EFFECT FOR HIGHER TERRAIN AREAS AS WELL AS SOME COASTAL AREAS. SEE SFOFFAMTR WGUS55 KMTR FOR DETAILED INFORMATION. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY HEAVY RAIN AND GUSTY WINDS TO CONTINUE SUNDAY. RAINFALL AMOUNTS WILL BE GREATEST ACROSS THE COASTAL MOUNTAIN RANGES WHERE UPWARDS OF 10 TO 12 INCHES ARE POSSIBLE THROUGH MONDAY MORNING. A FLASH FLOOD WATCH IS IN EFFECT FOR HIGHER TERRAIN AREAS AS WELL AS SOME COASTAL AREAS. SEE SFOFFAMTR WGUS55 KMTR FOR DETAILED INFORMATION. THE FLASH FLOOD WATCH IS IN EFFECT THROUGH SUNDAY AFTERNOON. SEE SFOFFAMTR WGUS55 KMTR FOR DETAILED INFORMATION. RAIN IS EXPECTED TO TAPER OFF ON MONDAY BUT ANOTHER STORM IS EXPECTED TO AFFECT THE AREA ON TUESDAY. A VERY ACTIVE WEATHER PATTERN IS ANTICIPATED TO PERSIST THROUGH THE REST OF THE WEEK.
In the hours before
Local storm report, Jan 7, 4:21 PM PST, 4 hours 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
421 PM PST SAT JAN 07 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0319 PM NON-TSTM WND DMG OAKLAND 37.77N 122.22W
01/07/2017 ALAMEDA CA PUBLIC
DOWNED TREE BLOCKING 3 LANES ON SB HIGHWAY 13 IN OAKLAND
NEAR REDWOOD ROAD.
&&
ASCHNEIDLocal storm report, Jan 7, 5:35 PM PST, 3 hours 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
535 PM PST SAT JAN 07 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0440 PM NON-TSTM WND DMG BEN LOMOND 37.10N 122.08W
01/07/2017 SANTA CRUZ CA BROADCAST MEDIA
TREE TOPPLES ONTO POWER LINE IN BEN LOMOND. 217 WITHOUT
POWER.
&&
WPILocal storm report, Jan 7, 6:15 PM PST, 2 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
615 PM PST SAT JAN 07 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 AM NON-TSTM WND GST SAN RAMON 37.76N 121.95W
01/07/2017 E0 MPH CONTRA COSTA CA NEWSPAPER
A WOMAN WALKING ON THE SAN RAMON GOLF COURSE WAS STRUCK
AND KILLED BY A FALLING TREE. OFFICIALS SAY THE TREE WAS
DESTABILIZED BY STORM-SOAKED SOIL AND STRONG WINDS.
&&
BBENJAMILocal storm report, Jan 7, 6:15 PM PST, 2 hours 57 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
615 PM PST SAT JAN 07 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 AM NON-TSTM WND GST SAN RAMON 37.76N 121.95W
01/07/2017 E30 MPH CONTRA COSTA CA NEWSPAPER
A WOMAN WALKING ON THE SAN RAMON GOLF COURSE WAS STRUCK
AND KILLED BY A FALLING TREE. OFFICIALS SAY THE TREE WAS
DESTABILIZED BY STORM-SOAKED SOIL AND STRONG WINDS.
&&
BBENJAMILocal storm report, Jan 7, 8:46 PM PST, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
846 PM PST SAT JAN 07 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0802 PM FLASH FLOOD 5 WNW BIG SUR VILLAGE 36.30N 121.88W
01/07/2017 MONTEREY CA LAW ENFORCEMENT
0819 PM FLASH FLOOD 2 ESE MARINA 36.67N 121.77W
01/07/2017 MONTEREY CA LAW ENFORCEMENT
WATER COVERING RESERVATION ROAD.
0826 PM NON-TSTM WND DMG 3 NW PRUNEDALE 36.83N 121.69W
01/07/2017 MONTEREY CA LAW ENFORCEMENT
OAK TREE DOWN ACROSS ENTIRE ROADWAY
0826 PM NON-TSTM WND DMG 3 W MILL VALLEY 37.90N 122.60W
01/07/2017 MARIN CA LAW ENFORCEMENT
TREE BLOCKING ROADWAY APPROX 7 MI FROM HWY 1
&&
MMEHLEThe office that day
Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 7, 9:12 PM PST | River Flood Warning | MTR | Napa | 35 hr |
| Jan 7, 11:23 PM PST | Special Marine Warning | MTR | 52 min | |
| Jan 7, 11:35 PM PST | River Flood Warning | MTR | Monterey | 24 hr |
| Jan 8, 12:16 AM PST | Flash Flood Warning | MTR | Santa Clara | 6 hr |
| Jan 8, 12:25 AM PST | Special Marine Warning | MTR | 35 min | |
| Jan 8, 12:49 AM PST | Special Weather Statement | MTR | Santa Cruz | 26 min |
| Jan 8, 1:05 AM PST | Areal Flood Advisory | MTR | Monterey, San Benito | 3 hr |
| Jan 8, 1:49 AM PST | Areal Flood Advisory | MTR | Contra Costa, Marin, Napa, City and County of San Francisco, San Mateo, Sonoma | 3 hr |
| Jan 8, 2:26 AM PST | Small Craft Advisory | MTR | 24 hr | |
| Jan 8, 3:26 AM PST | River Flood Warning | MTR | Napa | 32 hr |
| Jan 8, 3:26 AM PST | River Flood Warning | MTR | Sonoma | 5 days |
| Jan 8, 4:23 AM PST | Flash Flood Warning | MTR | Sonoma | 6 hr |
| Jan 8, 5:25 AM PST | Flash Flood Warning | MTR | Sonoma | 6 hr |
| Jan 8, 6:39 AM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 3 hr |
| Jan 8, 9:58 AM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 2 hr |
| Jan 8, 10:49 AM PST | Flash Flood Warning | MTR | Sonoma | 6 hr |
| Jan 8, 11:11 AM PST | Flash Flood Warning | MTR | Sonoma | 6 hr |
| Jan 8, 12:30 PM PST | Areal Flood Advisory | MTR | Marin, Napa, Sonoma | 3 hr |
| Jan 8, 12:45 PM PST | Areal Flood Advisory | MTR | Santa Cruz | 4 hr |
| Jan 8, 12:45 PM PST | Areal Flood Advisory | MTR | Santa Clara | 4 hr |
| Jan 8, 1:44 PM PST | Flash Flood Warning | MTR | Monterey | 4 hr |
| Jan 8, 1:58 PM PST | Flash Flood Warning | MTR | Santa Cruz | 3 hr |
Nearby
River Flood Warnings in California, 2017Every river flood warning 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.