California, 2019

Flash Flooding and Flooding in California, February 12 to 15, 2019

February 12 to 15, 2019 · NWS STO · 37 events in 15 counties and zones

Heavy snow fell over the mountains and extended down into lower elevations, causing widespread travel problems and road closures. Thunderstorms brought heavy rain and small hail with widespread road flooding.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
4
Property damage
$760,000
Crop damage
None recorded
Events
37

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.

What happened

The episode as NWS STO wrote it up.

Heavy snow fell over the mountains and extended down into lower elevations, causing widespread travel problems and road closures. Thunderstorms brought heavy rain and small hail with widespread road flooding. Gusty winds brought down trees and caused power outages.

What forecasters said that day

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 Sacramento, CA wrote its last area forecast discussion before the first event at Feb 12, 3:49 PM PST, 1 hour 11 minutes earlier.

Area forecast discussion, Feb 12, 3:49 PM PST, 1 hour 11 minutes before
Area Forecast Discussion
National Weather Service Sacramento CA
349 PM PST Tue Feb 12 2019

.SYNOPSIS...
A strong storm event will bring widespread precipitation across
the area starting tonight with the potential for moderate to heavy
rain and mountain snow. Local flooding with ponding on roads and
rises on streams and river possible through Thursday. Periods of
wet weather continue into the weekend.

&&

.DISCUSSION...
Very tricky, changeable forecast as a strong storm system moves
into the area tonight through Thursday. Snow levels will start low
tonight, then rise rapidly by Wednesday afternoon as strong warm
advection moves in. The timing and extent of this is particularly
difficult to project, with some cold air entrenching for a time
over the northern mountains and locally in mountain valleys and
basins. A Winter Storm Warning is now in effect starting this
evening for the mountains, extending through Friday afternoon. A
cooler system will bring snow levels back down Thursday night to
3000-4000 feet. Thursday will see snow levels around 6000-7000
feet, bringing high snow amounts to the passes. This will make
high mountain travel difficult to impossible at times. Thursday
has trended wetter as the trough is deeper and slower than
previously projected. High level snow amounts of around 2 to 5
feet are expected through Friday, more over high peaks.

Winds will pick Wednesday morning, then continue into the
evening. Gusts up to 40 to 50 mph are possible in the Valley,
strongest over the northern San Joaquin Valley. The Advisory has
been expanded into Thursday, when winds strengthen again. This
could bring down tree branches and cause local power outages.

Rain totals are impressive: 1 to 4 inches in the Valley, 3 to 6
inches in the foothills and mountains, 6 to 9 inches in portions
of western Plumas and eastern Butte counties. A Flood Watch
continues for much of the area Wednesday morning through Thursday
afternoon as saturated ground and elevated streams will respond to
significant rain and even some melting foothill snow. Higher
elevation snowpack is dry and deep and should readily absorb most
of the rain, suppressing runoff. Ponding on roads is likely in
low lying areas. Creeks and streams will rise. Main stem rivers
will see weirs flow and may experience local flooding at some
points.

Atmospheric instability may be enough Thursday for a few
thunderstorms over the central and northern Sacramento Valley.
Have introduced a small area with a slight chance, but confidence
is low for now. May expand or remove these depending on future
trends. EK

 &&
.EXTENDED DISCUSSION (Saturday THROUGH Tuesday)

No major systems are expected for the extended period but wet
weather is going to continue for the start of it. We will remain
embedded on the west end of a long wave troughing pattern.
Widespread mountain snow showers are expected both Saturday and
Sunday with snow levels 2000 to 3000 feet. Mountain travel will
likely be an issue over the weekend. Valley showers will also be
possible during the weekend with the best chances coming Saturday
night into Sunday morning. The trough will be pushing to the SE on
Sunday and we will see cold air build into NorCal. Snow levels
will fall to 1000 to 2000 feet Sunday night and we will see some
lingering snow showers. Some very light snow accumulation can't
be ruled out in the foothills late Sunday but it does look to
remain minor. Quiet but chilly weather is expected for early next
week.

-CJM

&&

.AVIATION...

VFR conditions are expected through the period, although rain will
begin to move over terminals between 00-06Z from the northwest.
Winds will begin to increase near the end of the forecast period
primariliy from the south southeast.

&&

.STO WATCHES/WARNINGS/ADVISORIES...
Flood Watch from late tonight through Thursday afternoon for
Carquinez Strait and Delta-Central Sacramento Valley-Clear
Lake/Southern Lake County-Motherlode-Mountains Southwestern
Shasta County to Northern Lake County-Northeast
Foothills/Sacramento Valley-Northern Sacramento Valley-Northern
San Joaquin Valley-Shasta Lake Area / Northern Shasta County-
Southern Sacramento Valley-West Slope Northern Sierra Nevada-
Western Plumas County/Lassen Park.

Winter Storm Warning until 4 PM PST Friday for Burney Basin /
Eastern Shasta County-Shasta Lake Area / Northern Shasta County-
West Slope Northern Sierra Nevada-Western Plumas County/Lassen
Park.

Wind Advisory from 4 AM Wednesday to 4 PM PST Thursday for
Carquinez Strait and Delta-Central Sacramento Valley-Northern
San Joaquin Valley-Southern Sacramento Valley.

&&

The radar

The Sacramento radar (KDAX), 23 km away, was scanning. The volume nearest the first event began at 04:58 UTC.

Open the radar archive at this moment

Event by event

31 flood, 2 heavy snow, 2 flash flood, 2 heavy rain. Local standard time, as filed.

Heavy Snow, Northern Sacramento Valley

When
February 12, 5:00 PM PST to February 13, 4:51 PM PST
Where
Northern Sacramento Valley forecast zone
Reported by
Newspaper

Heavy snow fell over portions of the northern Sacramento Valley shutting down Interstate 5 south of the Oregon border through Redding and knocking out power to thousands of customers. Thousands of trees were reported down by county officials.

Schools closed, Shasta County Superior Court shut down and flights were canceled at Redding Airport. Some 83,600 customers lost power as trees and their branches heavy with snow fell onto power lines. The majority of those who lost power were in Shasta County. The California Highway Patrol reported dozens of spinouts, fallen trees blocking roads and vehicles in ditches throughout Shasta County.

A trained spotter reported that 13.5 inches of snow had accumulated 1/2 a mile from downtown Redding. Another spotter sent a report through Facebook estimating that 12 inches of snow had accumulated on the ground 3 WSW Redding.

Flood, Sacramento

When
February 12, 9:00 PM PST to February 13, 9:00 AM PST
Where
Sacramento County, 1.75 mi SW of Florin to 1.82 mi SW of Florin
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.480, -121.420

California Highway reported county roads closed due to flooding.

Flood, Sacramento

When
February 13, 9:00 AM PST to 3:00 PM PST
Where
Sacramento County, Del Paso Hgts to 0.2 mi SE of Del Paso Hgts
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.600, -121.470

California Highway Patrol reported road flooding with #1 lane blocked on highway 160 s and del paso boulevard on ramp.

Flood, Yolo

When
February 13, 9:00 AM PST to 3:00 PM PST
Where
Yolo County, 0.69 mi S of Hebron to 0.68 mi S of Hebron
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.670, -121.730

California Highway Patrol reported country roads closed due to flooding.

Flood, Butte

When
February 13, 10:03 AM PST to 2:00 PM PST
Where
Butte County, 3.78 mi W of Chico Ranchaero Arpt to 3.54 mi W of Chico Ranchaero Arpt
Cause
Heavy Rain
Reported by
Fire Department/Rescue
Coordinates
39.730, -121.940

On Twitter Cal Fire Butte unit/Butte County Fire Department reported that a couple miles away at West Sacramento Avenue and River Road, water was flowing freely across the road.

Flood, Glenn

When
February 13, 10:15 AM PST to 3:00 PM PST
Where
Glenn County, 1.48 mi NNW of Willows to 1.16 mi N of Willows Glenn Co Arp
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
39.540, -122.210

California Highway Patrol reported slight flooding over Willow Creek Bridge on SB Interstate 5 north of Willows.

Flood, San Joaquin

When
February 13, 10:45 AM PST to 3:00 PM PST
Where
San Joaquin County, 0.54 mi W of Mayfair to 0.53 mi W of Mayfair
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.000, -121.310

Stockton police reported road flooding at Claremont Avenue and Sousa Street, Stockton and has closed both directions of the road.

Flood, Solano

When
February 13, 11:01 AM PST to 3:01 PM PST
Where
Solano County, 0.69 mi S of Vacaville Jct to 0.71 mi S of Vacaville Jct
Cause
Heavy Rain
Reported by
Law Enforcement
Coordinates
38.290, -121.970

On twitter the city of Vacaville relayed a flooding report from the Vacaville PD to avoid Vanden Road between Canon Road and Peabody Road until further notice, due to flooding.

Flood, Lake

When
February 13, 3:40 PM PST to 9:40 PM PST
Where
Lake County, 0.87 mi SW of Witter Spgs to 1.18 mi SSW of Witter Spgs
Cause
Heavy Rain
Injuries
3 direct, 0 indirect
Property damage
$20,000
Reported by
Broadcast Media
Coordinates
39.170, -122.980

The media reported that they received information from the California Highway Patrol that a vehicle was swept into Scotts Creek as they were trying to cross a flooded roadway. 3 people were rescued from the car.

Heavy Snow, Mt Shasta/Western Plumas County

When
February 13, 4:00 PM PST to February 15, 4:00 AM PST
Where
Mt Shasta/Western Plumas County forecast zone
Reported by
Department of Highways

Heavy snow and whiteout conditions caused I80 to be closed for February 15th for the morning through 6 pm. Avalanche control and a fallen tree also kept closed Highway 50 much of the day. These closures caused major impacts to travel and interstate commerce.

Castle Peak had a storm total of 45 inches of new snow. Squaw Valley Ski Resort at 8,000 feet reported 30 inches of new snow over 24 hours. At 6200 feet 20 inches was reported over 24 hours. Soda Springs had a storm total of 40 inches.

Flood, Sacramento

When
February 13, 4:44 PM PST to 10:44 PM PST
Where
Sacramento County, 3.32 mi ENE of Mayhew to 3.28 mi ENE of Mayhew
Cause
Heavy Rain
Property damage
$20,000
Reported by
Fire Department/Rescue
Coordinates
38.530, -121.240

On twitter the public information officer from Metro fire of Sacramento posted about a swift water rescue that occurred on Feb 13 at 4:44 pm. on Kiefer Blvd north of Jackson Rd.

Flood, Butte

When
February 13, 8:00 PM PST to February 14, 2:46 PM PST
Where
Butte County, 3.19 mi SSW of Palermo to 3.02 mi SSW of Palermo
Cause
Heavy Rain
Reported by
Broadcast Media
Coordinates
39.390, -121.580

The media reported that late in the evening on February 13, 2018 two people had been rescued from the roof of a car at Cox Lane and Lone Tree Road near Palermo. This information came from the public information officer for Cal Fire-Butte County.

Flood, Lake

When
February 14, 2:30 AM PST to 8:30 AM PST
Where
Lake County, 11.95 mi ENE of Lower Lake to 11.77 mi NE of Lower Lake
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
39.010, -122.410

Caltrans and law enforcement started receiving reports of washed out roads and flooding around 2:30 am. A full closure of Hwy 20 is in effect as of 1:40pm.

Flood, Tehama

When
February 14, 3:00 AM PST to 4:50 PM PST
Where
Tehama County, 2.22 mi ENE of Red Bluff to 2.18 mi ENE of Red Bluff
Cause
Heavy Rain
Reported by
Public
Coordinates
40.190, -122.190

From route 36 to Aramayo Way the road was closed to numerous reports of flooding. Reports of flooding started coming in at 3am and were still present at 4:50pm.

Flood, Lake

When
February 14, 3:10 AM PST to 9:10 AM PST
Where
Lake County, 2.99 mi SE of Finley to 3.06 mi ESE of Lakeport Lampson Arp
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
38.970, -122.830

Caltrans was reporting multiple areas of flooding near and around Kelseyville from 3:10am to 6:40am.

Flood, Yolo

When
February 14, 6:30 AM PST to 12:30 PM PST
Where
Yolo County, 1.08 mi E of Madison to 1.3 mi E of Madison
Cause
Heavy Rain
Reported by
Public
Coordinates
38.680, -121.950

Caltrans reported that in Yolo County, I-505 was closed in both directions from I-5 to SR16 due to flooding.

Flood, Yolo

When
February 14, 7:25 AM PST to 1:25 PM PST
Where
Yolo County, 0.69 mi S of Esparto to 0.27 mi SE of Esparto
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
38.690, -122.020

Caltrans reports that there was a full closure of Highway 16, both eastbound and westbound, due to flooding. (Esparto to Dounty Rd 89/Guys Station).

Flood, Tehama

When
February 14, 7:57 AM PST to 1:57 PM PST
Where
Tehama County, Tehama to 0.48 mi S of Tehama
Cause
Heavy Rain
Reported by
Broadcast Media
Coordinates
40.020, -122.120

Fifth street in the city of Tehama, leading into Gyle Road was closed.

Flood, Tehama

When
February 14, 7:57 AM PST to 1:57 PM PST
Where
Tehama County, 0.69 mi N of Los Molinos to 0.66 mi N of Los Molinos
Cause
Heavy Rain
Reported by
Broadcast Media
Coordinates
40.030, -122.100

Highway 99 was closed from Aramayo Way to South Avenue in the area of Vina.

Flood, Amador

When
February 14, 8:43 AM PST to 2:43 PM PST
Where
Amador County, 1.08 mi W of Pioneer to 0.73 mi W of Pioneer
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
38.430, -120.590

Caltrans reported that both lanes of the road were flooded. At 10:46am Caltrans reported that the flooding was caused by debris build up.

Flood, Butte

When
February 14, 9:00 AM PST to 3:00 PM PST
Where
Butte County, 1.48 mi SSE of Anita to 1.68 mi NNE of Nord
Cause
Dam / Levee Break
Property damage
$100,000
Reported by
Broadcast Media
Coordinates
39.800, -121.960

Butte County Sheriff evacuated the area of Nord Cana Highway and Wilson Landing Road south of Rock Creek after a levee breached and the creek flooded.

Flood, Calaveras

When
February 14, 9:00 AM PST to 3:00 PM PST
Where
Calaveras County, 2.14 mi SW of Fourth Crossing to 1.91 mi SW of Fourth Crossing
Cause
Heavy Rain
Reported by
Public
Coordinates
38.110, -120.660

Caltrans reported flooding on pool station road at 9am with the road closing at 9:30am. at 12:05 pm new reports came in that pool station bridge near riata is washed away and that warning signs were put up. Multiple vehicles were still trying to get through.

Flash Flood, Calaveras

When
February 14, 9:02 AM PST to 3:02 PM PST
Where
Calaveras County, 1.62 mi W of Sandy Gulch to 1.66 mi W of Sandy Gulch
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
38.380, -120.560

Over 2-3 hours 1.5 to 2.5 inches of rain fell. A mudslide was reported at this particular location with the road being closed from Woodhouse Mine to West Point.

Flood, Calaveras

When
February 14, 9:06 AM PST to 11:53 AM PST
Where
Calaveras County, 1.48 mi SSW of Kentucky House to 1.19 mi NNW of Fourth Crossing
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
38.150, -120.640

Caltrans reported that the river was running across the roadway way and that highway 4 needed to be closed. At 11:53 am Caltrans sent a notification that Highway 49 was reopened.

Flood, Sacramento

When
February 14, 9:06 AM PST to 3:06 PM PST
Where
Sacramento County, 3.32 mi ENE of Mayhew to 3.33 mi ENE of Mayhew
Cause
Heavy Rain
Injuries
1 direct, 0 indirect
Reported by
Public
Coordinates
38.530, -121.240

On Twitter the public information officer from Metro Fire of Sacramento posted pictures of a second swift water rescue that occurred on Kiefer Blvd. north of Jackson Road.

Flash Flood, Calaveras

When
February 14, 9:14 AM PST to 3:14 PM PST
Where
Calaveras County, 1.29 mi ENE of Glencoe to 1.06 mi NE of Glencoe
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
38.360, -120.560

Caltrans is reporting that the roadway is completely flooded.

Flood, Calaveras

When
February 14, 11:00 AM PST to 5:00 PM PST
Where
Calaveras County, 0.88 mi SW of San Andreas Arpt to 0.56 mi W of San Andreas Arpt
Cause
Heavy Rain
Property damage
$500,000
Reported by
Broadcast Media
Coordinates
38.170, -120.680

Local media reporting flood waters running over Pool Station Road caused road on bridge to crack.

Flood, Colusa

When
February 14, 11:46 AM PST to 5:46 PM PST
Where
Colusa County, 1.27 mi ESE of Delphos to 1 mi SE of Delphos
Cause
Heavy Rain
Property damage
$20,000
Reported by
Department of Highways
Coordinates
39.170, -122.150

Caltrans reported that multiple vehicles were stuck in water on I-5.

Flood, Tuolumne

When
February 14, 11:56 AM PST to 6:56 PM PST
Where
Tuolumne County, 1.76 mi SE of Tuttletown to 1.09 mi NW of Jamestown
Cause
Heavy Rain
Reported by
Public
Coordinates
37.960, -120.450

Caltrans reported that roadway was flooded.

Heavy Rain, Yolo

When
February 14, 1:50 PM PST to 7:50 PM PST
Where
Yolo County, 0.88 mi NW of Rumsey
Reported by
Department of Highways
Coordinates
38.890, -122.240

In Yolo and Colusa Counties, Hwy 16 had eastbound lanes closed at Hwy 20 and westbound lanes closed at Rumsey Canyon due to rock slides. The closest 24 hour rain report had 2.06 inches of rain.

Flood, Lake

When
February 14, 1:53 PM PST to 7:53 PM PST
Where
Lake County, 3.82 mi E of Clearlake Oaks to 3.99 mi ESE of Clearlake Oaks
Cause
Heavy Rain
Reported by
Department of Highways
Coordinates
39.010, -122.610

Caltrans at Route 53 south, there is a full closure of Hwy 20 due to flooding.

Flood, Colusa

When
February 14, 2:52 PM PST to 8:52 PM PST
Where
Colusa County, 1.75 mi SE of Williams to 1.31 mi SSE of Williams
Cause
Heavy Rain
Reported by
Fire Department/Rescue
Coordinates
39.130, -122.130

Via a Facebook live with CBS13 and the Williams Fire Department Chief reported that 6 swift water rescues have occurred today. One was on going at the time of report which included a child and an adult. The fire chief estimated that there was 3-6 feet of flowing water over the roads. Both I-5 and old Highway 99 were closed for flooding.

Heavy Rain, Calaveras

When
February 14, 3:00 PM PST to 9:00 PM PST
Where
Calaveras County, Altaville to 1.08 mi SW of Douglas Flat
Reported by
County Official
Coordinates
38.080, -120.550

The county reported there were numerous reports of blocked roads due to mudslides and 25 reports of flooded roads across Calaveras County. A line of storms remained stationary over this area with 1.0 inch of rain being reported in an hour which caused these conditions.

Flood, Placer

When
February 14, 4:00 PM PST to 9:00 PM PST
Where
Placer County, 2.63 mi NW of Lincoln Muni Arpt to 2.73 mi W of Ewing
Cause
Heavy Rain
Reported by
County Official
Coordinates
38.930, -121.380

Via Twitter, Placer County reported that Dowd Road at Wise Road near Lincoln was closed due to flooding.

Flood, San Joaquin

When
February 14, 4:40 PM PST to February 15, 4:40 PM PST
Where
San Joaquin County, 2.64 mi NE of Eagle Tree to 2.43 mi NE of Eagle Tree
Cause
Heavy Rain
Reported by
Broadcast Media
Coordinates
38.230, -121.490

The media reported that part of New Hope Marina Trailer Park flooded. Local law enforcement arrived to help residents evacuate the area. The manager of the trailer part said that most residents evacuated or moved trailers on their own.

Flood, Butte

When
February 14, 4:53 PM PST to 10:53 PM PST
Where
Butte County, 2.76 mi WSW of Craig to 3.07 mi WSW of Craig
Cause
Heavy Rain
Property damage
$100,000
Reported by
Fire Department/Rescue
Coordinates
39.320, -121.600

Via twitter Cal Fire Butte County Fire Department reported that firefighters were searching in the area of Lower Honcut road and Hwy 70. They located a truck and horse trailer under water that was swept 150 feet off the roadway. Believed driver was out of the vehicle.

Flood, Butte

When
February 15, 12:15 PM PST to 6:15 PM PST
Where
Butte County, 5.22 mi WSW of Dayton to 6.28 mi WSW of Dayton
Cause
Heavy Rain
Reported by
County Official
Coordinates
39.620, -121.970

Swift water team and Butte County Search and Rescue responded to Ord Ferry Road after the driver of a semi-trailer truck attempted to cross a flooded road.

What these are

Heavy Snow
Snowfall reaching the local warning threshold without the other hazards of a winter storm.
Flood
Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in California in 2019Every state in 2019This day in weather historyWarnings in California, February 2019

Sources

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: 809591, 809541, 809544, 809545, 809546, 809547, 809548, 809549, 809550, 809592, 809552, 809576, 809553, 809554, 809555, 809556, 809557, 809558, 809559, 809560, 809561, 809562, 809563, 809564, 809565, 809566, 809568, 809569, 809570, 809572, 809573, 809577, 809580, 809581, 809582, 809583, 809584.