An Atmospheric River event brought heavy rain and gusty winds with a strong winter storm that impacted the Bay Area for several days in mid-December. Cyclogenesis occurred with a 979 mb low forming off the Northern California coast.
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MTR wrote it up.
An Atmospheric River event brought heavy rain and gusty winds with a strong winter storm that impacted the Bay Area for several days in mid-December. Cyclogenesis occurred with a 979 mb low forming off the Northern California coast. On December 11, the intense surface low moved up the coast and drug a narrow cold frontal rainband (NCFR) through the Bay Area that morning and early afternoon. NCFRs are rapidly moving fronts that are notorious for intense rainfall and gusty winds despite having limited instability.
The NCFR wasn't a major wind producer, but the rainfall rates were impressive. Instantaneous rainfall rates of 1.5-2 inches/hr were reported. Observational data from the Big Sur Coast were also impressive with Big Sur receiving 4.43 in 2 hours and Flores Camp receiving 3 in 1 hour. It wasn't so much the total amount of rainfall for many locations, but the intensity and how much was received in a short amount of time.
Many locations around the entire Bay Area had flooding: urban flooding of streets and highways, flooding of creeks and even one large river in the North Bay. Eventually the NCFR slowed around the Big Sur Coast. The stalling was likely due to another 'wave' in the atmosphere, farther to the southwest, riding along the boundary. The end result was to have the weakened NCFR lift back northward, almost like a quasi-warm front, producing another round of moderate to locally heavy rainfall around the Bay Area, compounding flooding concerns.
In addition to the impressive rainfall, winds also became a problem for the water soaked ground, drought stressed trees and diseased trees. Peak winds occurred over the higher terrain with the Lick Observatory reporting 83 mph. Most low elevation areas saw much lower wind speeds.
Lastly, the intense winds over the coastal waters helped to generate a fresh swell that produced very dangerous surf with large breaking waves. The Big Sur Coast buoy reported a peak wave of 19.7 feet.
The event was followed by several weaker storm systems that week that brought additional rainfall, continued flooding and mudslide concerns to the area.
The local office's own words before the first event, 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 the first event at Dec 10, 10:16 PM PST, 3 hours 44 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1016 PM PST WED DEC 10 2014
...A POWERFUL PACIFIC STORM SYSTEM REMAINS ON TRACK TO IMPACT THE
REGION FROM LATE WEDNESDAY NIGHT THROUGH LATE THURSDAY...
.SYNOPSIS...THE STRONGEST PACIFIC STORM SYSTEM TO IMPACT THE REGION
IN MORE THAN 6 YEARS REMAINS ON TRACK TO BRING VERY HEAVY RAIN AND
STRONG DAMAGING WINDS TO MUCH OF THE REGION FROM LATE TONIGHT THROUGH
THURSDAY. THE MOST HAZARDOUS CONDITIONS WILL BE ALONG AND AHEAD OF
THE COLD FRONT THAT WILL SWEEP THROUGH THE ENTIRE REGION THURSDAY
MORNING AND EARLY AFTERNOON.
&&
.DISCUSSION...AS OF 8:55 PM PST WEDNESDAY...LATEST MODEL
DATA AND SATELLITE DATA CONTINUE TO INDICATE THAT ALL THE
INGREDIENTS ARE IN PLACE FOR A POWERFUL PACIFIC STORM TO PRODUCE
HEAVY RAIN...FLOODING...AND DAMAGING WINDS ACROSS THE SAN FRANCISCO
AND MONTEREY BAY AREAS FROM LATE TONIGHT THROUGH THURSDAY.
SATELLITE IS DETECTING A PLUME OF VERY MOIST AIR FLOWING ACROSS
THE EASTERN PACIFIC AND INTO NORTHERN CA AHEAD OF A STRONG COLD
FRONT THIS EVENING...WITH PW VALUES AS HIGH AS 1.8 INCHES. BEHIND
THE COLD FRONT...SATELLITE SHOWS A LARGE POOL OF COLD AND UNSTABLE
AIR RESULTING IN A ROBUST BAROCLINIC ZONE. IN ADDITION...A STRONG
190 KT UPPER JET IS FLOWING ACROSS THE EASTERN PACIFIC ALONG
135W...TAKING AIM AT CA. NEAR THE FRONT-LEFT QUADRANT OF THIS
UPPER JET A SURFACE CYCLONE IS DEEPENING OFF THE NORTHERN CA COAST
THIS EVENING...AND THIS LOW WILL DEEPEN RAPIDLY THROUGH DAYBREAK
THURSDAY MORNING. TAKEN TOGETHER...THESE FACTORS ADD UP TO A HIGH
CONFIDENCE FORECAST FOR SIGNIFICANT WIDESPREAD IMPACTS LATE
TONIGHT THROUGH THURSDAY FROM HEAVY RAIN AND STRONG WINDS.
HEAVY RAIN: RAIN BEGAN ACROSS PORTIONS OF THE NORTH BAY AT MIDDAY
AND MORE THAN AN INCH HAS ALREADY FALLEN IN NORTHWEST SONOMA
COUNTY. RAIN RATES WILL INCREASE IN THE NORTH BAY BY LATE THIS
EVENING AS THE DEEPENING LOW MOVES CLOSER AND ENHANCEMENT
DEVELOPS ALONG THE FRONTAL BOUNDARY. RADAR ALREADY SHOWS MORE
INTENSE RAIN OFFSHORE...APPROACHING THE NORTH BAY COAST. THE
ENHANCEMENT THAT IS CURRENTLY DEVELOPING ALONG THE FRONTAL
BOUNDARY OFFSHORE WILL RESULT IN THE BAND OF HEAVIEST RAIN
STALLING OVER THE NORTH BAY OVERNIGHT AND INTO EARLY THURSDAY
MORNING. THIS WILL MEAN SEVERAL HOURS OF MODERATE TO HEAVY RAIN
ACROSS THE NORTH BAY FROM LATE THIS EVENING THROUGH LATE THURSDAY
MORNING. SPECIFIC CONCERNS FOR SOME OF THE LARGER RIVERS INCLUDE
BOTH THE RUSSIAN AND NAPA RIVERS...WHICH ARE CURRENTLY PROJECTED
TO EITHER APPROACH OR EXCEED FLOOD STAGE. FLOOD WARNINGS MAY BE
POSTED FOR PORTIONS OF THE NAPA AND RUSSIAN RIVERS LATER TONIGHT
DEPENDING ON HOW EXCESSIVE AND PERSISTENT HEAVY RAIN RATES
BECOME. FLASH FLOOD WARNINGS ARE CERTAINLY POSSIBLE FOR OTHER
SMALLER RIVERS AND STREAMS IN THE NORTH BAY FROM LATE TONIGHT
THROUGH THURSDAY. A FLASH FLOOD WATCH IS IN EFFECT FOR THE ENTIRE
REGION FROM LATE THIS EVENING THROUGH THURSDAY NIGHT.
HEAVY RAIN WITH THE FRONTAL BOUNDARY SHOULD BEGIN TO PUSH SOUTH
OF THE GOLDEN GATE BY AROUND SUNRISE THURSDAY MORNING AND THEN
MOVE STEADILY TO THE SOUTH THROUGH THE REMAINDER OF THE SF BAY
AREA FROM THURSDAY MORNING THROUGH MID-AFTERNOON....AND FINALLY
THROUGH THE MONTEREY BAY AREA ON THURSDAY AFTERNOON. ALTHOUGH THE
FRONT IS NOT AS LIKELY TO STALL AGAIN ONCE IT MOVES SOUTH OF THE
GOLDEN GATE...IT WILL PRODUCE VERY HEAVY RAIN RATES AND SO
FLASH FLOODING WILL BE A POSSIBILITY IN ALL PORTIONS OF THE
FORECAST AREA TOMORROW AND TOMORROW EVENING.
STRONG AND DAMAGING WINDS: SOUTHERLY WINDS HAVE ALREADY BEEN
GUSTING AS HIGH AS 40 MPH IN THE NORTH BAY MOUNTAINS THIS
EVENING. WINDS WILL INCREASE OVERNIGHT AND INTO THURSDAY MORNING
AS THE SURFACE LOW DEEPENS OFFSHORE...DOWN TO 976 MB WEST OF CAPE
MENDOCINO BY DAYBREAK THURSDAY ACCORDING TO THE NAM. WINDS WILL
PEAK DURING A 4 TO 6 HOUR WINDOW PRIOR TO FRONTAL PASSAGE. THIS
MEANS STRONGEST WINDS IN THE NORTH BAY WILL OCCUR BETWEEN ABOUT
SUNRISE AND LATE MORNING...ACROSS THE REST OF THE SF BAY AREA
BETWEEN MID MORNING AND EARLY AFTERNOON AND AROUND THE MONTEREY
BAY AREA FROM MIDDAY THROUGH THE AFTERNOON HOURS. WIDESPREAD
SUSTAINED WIND SPEEDS OF 25 TO 40 MPH ARE LIKELY. GUSTS UP TO 50
MPH ARE EXPECTED IN THE VALLEYS...UP TO 65 MPH NEAR THE COAST AND
UP TO 80 MPH IN THE HILLS. WINDS OF THIS MAGNITUDE WILL RESULT IN
DOWNED TREES AND POWER LINES AND WIDESPREAD POWER OUTAGES.
THUNDERSTORMS MAY DEVELOP ALONG THE FRONTAL BOUNDARY LATE TONIGHT
AND THURSDAY WHICH WOULD RESULT IN LOCAL ENHANCEMENTS OF WIND
SPEEDS ABOVE WHAT WAS ALREADY MENTIONED. A HIGH WIND WARNING IS
IN EFFECT FOR THE ENTIRE SF BAY AREA THROUGH 10 PM THURSDAY AND
FROM MONTEREY BAY SOUTHWARD FROM 4 AM UNTIL 10 PM THURSDAY.
IN ADDITION TO HEAVY RAIN...POTENTIAL FLOODING...AND STRONG
WINDS...THIS STORM HAS ALREADY GENERATED LARGE WAVES WHICH ARE
BREAKING ALONG OUR COAST. HIGH SURF ADVISORIES ARE IN EFFECT
FROM SONOMA COUNTY SOUTH TO MONTEREY COUNTY.
WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS WILL PERSIST BEHIND
THE FRONT FROM THURSDAY NIGHT THROUGH FRIDAY EVENING AS THE UPPER
TROUGH MOVES SLOWLY ACROSS OUR AREA. THESE SHOWERS AND
THUNDERSTORMS WILL PRODUCE BRIEF HEAVY DOWNPOURS...BUT WILL NOT
ADD SIGNIFICANTLY TO RAIN TOTALS.
DRY WEATHER IS EXPECTED FOR MOST OF THE UPCOMING WEEKEND AS A
SHORTWAVE RIDGE BRIEFLY BUILDS OVER CA. THE NEXT WEATHER SYSTEM
MAY BRING RAIN TO OUR REGION AS EARLY AS SUNDAY EVENING...ALTHOUGH
THAT WEATHER SYSTEM IS NOT EXPECTED TO BE NEARLY AS STRONG OR WET
AS OUR CURRENT STORM.
&&
AVIATION...AS OF 10:16 PM PST WEDNESDAY...THE DISCUSSION IS MOSTLY
UNCHANGED FROM THE PREVIOUS DISCUSSION...VERY BUSY SHIFT. THE PRIMARY
SURFACE LOW IS OVER THE EPAC NOW NEAR 39.2N/132.8W AND FORECAST TO
DEEPEN THROUGH LATE TONIGHT AND THURSDAY MORNING. THE MAIN LOW CENTER
WILL MOVE TO SW OREGON BY THURSDAY WITH A TRAILING STRONG COLD FRONT
COUPLED WITH A VERY MOISTURE RICH AIR MASS AHEAD OF THE FRONT
MOVING SOUTH OVER THE BAY AREA AND CENTRAL COAST. IN SUMMARY
EXPECT NUMEROUS AIRLINE DELAYS AND/OR CANCELLATIONS IN AND OUT OF
THE FORECAST AREA THROUGH THURSDAY AND PROBABLY THROUGH THURSDAY
NIGHT AS WELL DUE TO RAPIDLY DETERIORATING WEATHER CONDITIONS.
STEADILY INCREASING RAIN RATES (TO HEAVY) AS WELL AS HEAVY
SOUTHERLY WINDS ARE EXPECTED FOR THE FORECAST PERIOD. VERY STRONG
DYNAMICS ASSOCIATED WITH THE COLD FRONTAL PASSAGE ON THURSDAY WILL
BRING ADDITIONAL HEAVY RAIN...AND DAMAGING WINDS AS WELL AS A FEW
T-STORMS AND SOME STORMS ARE VERY LIKELY TO SHOW ROTATION DUE TO A
STRONGLY SHEARED ENVIRONMENT. KMUX RADAR WILL BE MONITORED CLOSELY
AND TAFS WILL BE AMENDED AS NECESSARY TO COVER SHORTER TERM
WEATHER CONDITIONS/CHANGES.
VICINITY OF KSFO...AN AIRPORT WEATHER WARNING FOR STRONG AND GUSTY
S-SE WINDS VALID MIDNIGHT TONIGHT THROUGH 4 PM PST THURSDAY. GUSTS
POTENTIAL UP TO 40 KNOTS...BUT WOULD NOT BE SURPRISED IF A FEW GUSTS
GET CLOSER TO 60 KNOTS NEAR FRONTAL PASSAGE EARLY THURSDAY.
KSFO BRIDGE APPROACH...ADVERSE WEATHER SIMILAR TO KSFO.
MONTEREY BAY AREA TERMINALS...VFR TO MVFR OVERNIGHT WITH HEAVY
RAIN AND WIND ARRIVING EARLY THURSDAY MORNING.
&&
.MARINE...AS OF 8:25 PM PST WEDNESDAY...A POWERFUL EASTERN PACIFIC
STORM WILL COTINUE TO IMPACT THE COASTAL WATERS TOIGHT INTO
FRIDAY. HAZARDOUS CONDITIONS WILL DEVELOP WITH DANGEROUS
SURF...LARGE SWELL...THUNDERSTORMS...AND GALE FORCE WINDS WITH
OCCASIONAL STORM FORCE GUSTS. THE MOST HAZARDOUS CONDITIONS WILL
PREVAIL FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON. MARINERS
VENTURING ON OPEN WATERS THROUGH THURSDAY ARE URGED TO USE EXTREME
CAUTION AND CHECK THE LATEST CONDITIONS BEFORE DEPARTING.
CONDITIONS WILL IMPROVE ON FRIDAY AS THE STORM EXITS THE REGION.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.TNGT...HIGH WIND WARNING...ENTIRE SAN FRANCISCO BAY AND MONTEREY BAY AREAS
FLASH FLOOD WATCH...ENTIRE SAN FRANCISCO BAY AND MONTEREY BAY AREAS
HIGH SURF ADVISORY...COAST FROM SONOMA COUNTY TO MONTEREY COUNTY
GLW...MONTEREY BAY FROM 3 AM
GLW...PIGEON PT TO PT PINOS 0-10 NM FROM 3 AM
GLW...PIGEON PT TO PT PINOS 10-60 NM FROM 3 AM
SCA...PIGEON PT TO PT PINOS 0-10 NM UNTIL 3 AM
SCA...PT PINOS TO PT PIEDRAS BLANCAS 0-10 NM UNTIL 3 AM
SCA...PIGEON PT TO PT PINOS 10-60 NM UNTIL 3 AM
SCA...PT PINOS TO PT PIEDRAS BLANCAS 10-60 NM UNTIL 3 AM
GLW...PT PINOS TO PT PIEDRAS BLANCAS 0-10 NM FROM 3 AM
GLW...PT PINOS TO PT PIEDRAS BLANCAS 10-60 NM FROM 3 AM
GLW...SF BAY SOUTH OF THE BAY BRIDGE
GLW...PT ARENA TO PT REYES 0-10 NM
GLW...PT REYES TO PIGEON PT 0-10 NM
GLW...PT ARENA TO PT REYES 10-60 NM
GLW...PT REYES TO PIGEON PT 10-60 NM
SCA...ROUGH BAR ADVISORY FOR SF BAR
SRW...SF BAY NORTH OF THE BAY BRIDGE FROM 3 AM
GLW...SF BAY NORTH OF THE BAY BRIDGE UNTIL 3 AM
&&
PUBLIC FORECAST: DYKEMA
AVIATION: CANEPA
MARINE: MM/CANEPA
VISIT US AT WEATHER.GOV/SANFRANCISCO
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WWW.YOUTUBE.COM/NWSBAYAREAHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 937 AM PST WED DEC 10 2014 CAZ006-505>513-516>518-528>530-111400- 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 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 AND INTERIOR MONTEREY COUNTY INCLUDING PINNACLES NATIONAL PARK- NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY- NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST- 937 AM PST WED DEC 10 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND MONTEREY BAY AREA. .DAY ONE...WEDNESDAY AND WEDNESDAY NIGHT A POWERFUL PACIFIC STORM SYSTEM WILL BRING HEAVY RAIN AND THE POTENTIAL FOR STRONG DAMAGING WINDS TO THE NORTH BAY AS EARLY AS LATE WEDNESDAY NIGHT AND WILL SPREAD SOUTHWARD THROUGH THURSDAY AFTERNOON. * HIGH WIND WARNING IN EFFECT FOR THE ENTIRE REGION * * FLASH FLOOD WATCH IN EFFECT FOR THE ENTIRE REGION * * FOR A DETAILED VIEW OF THE HAZARDS...PLEASE VISIT HTTP://WWW.WEATHER.GOV/MONTEREY/HAZARDS .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A POWERFUL PACIFIC STORM SYSTEM WILL BRING HEAVY RAIN AND THE POTENTIAL FOR STRONG DAMAGING WINDS TO MUCH OF THE REGION THURSDAY MORNING THROUGH THURSDAY LATE AFTERNOON. HAZARDOUS CONDITIONS ARE EXPECTED TO DIMINISH THURSDAY NIGHT INTO FRIDAY. * HIGH WIND WARNING IN EFFECT FOR THE ENTIRE REGION * * FLASH FLOOD WATCH IN EFFECT FOR THE ENTIRE REGION * * FOR A DETAILED VIEW OF THE HAZARDS...PLEASE VISIT HTTP://WWW.WEATHER.GOV/MONTEREY/HAZARDS .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS PER STANDARD OPERATING PROCEDURES.
The Sacramento radar (KDAX), 100 km away, was scanning. The volume nearest the first event began at 09:59 UTC.
21 flood, 8 flash flood, 7 heavy rain, 6 high wind, 3 strong wind, 2 debris flow, 1 coastal flood. Local standard time, as filed.
Northbound US-101 flooded across all lanes, north of Arata Lane.
Rainfall totals of 4.5 inches so far, with 2.5 inches since midnight.
A measured gust of 68 MPH on Mt. Diablo.
Significant amount of water across area roadways near Laguna de Santa Rosa.
Flooding on all lanes of Northbound US-101 at Lucky Drive.
Foss Creek over banks and flooding Vine and Grove. Law enforcement closed roads.
Law enforcement reports numerous road closures due to flooding in Healdsburg. Intersections included Piper at East, Center at Grant, Piper at Healdsburg, and Center at Mitchell.
Measured gust of 71 MPH at Woodacre.
Standing water causing roadway flooding in Healdsburg.
Measured gust of 64 MPH on Calaveras Road.
Water flooding all lanes of Route 29 near Napa.
Elevated water levels, strong winds, and swell produced water that flooded over the wall on the Embarcadero and resulted in the road being closed for several hours.
A wind gust of 83 MPH was measured atop Mt. Hamilton at the Lick Observatory weather station.
Significant flash flooding on Interstate 280 was reported by the public. This coincided with a nearby observation of 0.90 of rainfall in 30 minutes at San Bruno Mountain. Traffic was significantly impacted and slowed or stopped during the height of morning rush hour.
Spotter measures rainfall total from 5:00 PM December 10 through 7:30 AM December 11 of 3.97 inches.
San Bruno BART station closed during rush hour commute due to flooding of station from heavy rain.
Strong wind gusts blew down an 80 foot cypress tree at Gateway School in Santa Cruz into an area where children were congregating outside waiting for school to begin. The tree crushed a picnic table and fell on an 11 year old boy and girl. The girl sustained minor injuries. The boy's arm and shoulder were pinned by the tree and he broke his arm and had to have rescuers cut the tree apart to free him.
Wind gust of 64 MPH measured at Los Gatos.
California Highway Patrol observed 18 inches of water on roadway on WestBound Interstate 580 to Eastbound Route 24.
Flooding from Pt. Reyes to Olema on Highway 1. Campground flooded.
Public reports water covering roadway and parking lots along San Pedro Creek.
Heavy rainfall produced significant rises on Novato Creek between highways 101 and 37 on the east side of the city of Novato. This led to an intentional breach of the levee on a 20 foot section to prevent floodwaters from reaching downtown businesses and nearby subdivisions. This same flooding also resulted in failure of a smaller portion of the levee and overtopped another section. Caltrans levees on highway 37 were breached and a culvert was washed out.
Five vehicles were crushed when a redwood tree was blown down across them.
Heavy rain caused flooding of several trailer parks in Redwood City. The combination of standing water and a local creek flooding resulted in the need for residents to be evacuated from the Le Mar Trailer Park and RC Mobile Home Park on E Bayshore in Redwood City. 50 mobile homes were evacuated and residents were sent to shelters.
A slide under sixty feet of Highway 1 near Muir Beach resulted in a full closure of the road which is expected to last for several months.
A significant mudslide occurred along Tennessee Valley Road.
A large number of boats in Monterey Harbor had to be pumped out to avoid sinking on December 11 due to heavy rainfall.
Flash flood swept SUV off road and into Dry Creek.
Downed trees and power lines in San Francisco resulted in outages impacting up to 95,000 customers.
Spotter has measured 4.19 inches of rainfall since midnight and a storm total of six inches so far.
Roadway flooding at Mojo Cojo Slough on Moss Landing.
Roadway flooding on Southbound US-101 at 85.
CHP reports water 1 foot deep covering almost entire Parkmoor Onramp to Interstate 280 Soutbound.
Roadway flooding reported at intersection of Highway 1 and Struve Road.
The Venado gauge in Northern Sonoma County measured a 24 hour rainfall of 9 inches.
Roadway flooding reported from intersection of Meridian Road and Archer Road.
Multiple lanes of CA-92 blocked due to flooding, west of Interstate 880.
Ashby Avenue Railway underpass near I-80 is flooded. Three cars are stranded and floating in floodwaters.
Parking lots of Elsie Allen High School flooded.
A measured gust of 67 MPH at Highlands Peak.
Highway 1 flooded and closed from Panoramic Highway to Muir Woods Road.
Heavy rainfall resulted in the partial roof collapse of a Grocery Store in San Jose.
CA-121 flooded at Schellville due to Schell Creek.
The Russian River flooded and resulted in closure of CA-128 between Canyon Road and Alexander Valley Road including Geyserville.
Fifteen homes were flooded and damaged due to flooding from Santa Rita Creek along Russel Road in Salinas.
Heavy rain overwhelmed the sewage plant in Castroville resulting in a sewage spill.
Moro Cojo Slough backed up and flooded homes and roadway along its banks. Sandbagging operations were needed to protect the homes from significant damage. The slough flooded from heavy rain and then the flap gates were damaged and could not properly drain the slough into Moss Landing Harbor.
US-101 closed in both directions due to flooding in Menlo Park between Willow and Marsh exits.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2014Every state in 2014This day in weather historyWarnings in California, December 2014
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 547263, 547305, 551649, 547264, 547268, 547277, 547278, 551650, 547279, 551648, 547280, 549754, 551656, 547228, 547307, 549753, 549755, 551653, 547229, 547242, 547253, 549744, 549757, 549711, 549748, 549749, 547308, 547262, 549752, 547309, 547282, 547283, 547285, 547286, 547310, 547287, 547288, 547290, 547291, 551651, and more.