A cold front moved through the region into February 10th lowering snow levels below 1500 ft, per the Bodega Bay Profiler. The areas peaks saw another dusting to several inches of snow as a result with Mount Hamilton recording almost 6 inches.
Every event with a place to put it; 3 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.
A cold front moved through the region into February 10th lowering snow levels below 1500 ft, per the Bodega Bay Profiler. The areas peaks saw another dusting to several inches of snow as a result with Mount Hamilton recording almost 6 inches. Additionally, showers ahead of the front the previous evening caused some minor roadway flooding.
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 Feb 9, 10:34 PM PST, 52 minutes earlier.
Area Forecast Discussion
National Weather Service San Francisco Bay Area
1034 PM PST Sat Feb 9 2019
.SYNOPSIS...Another cold system approaching the state will bring
widespread rainfall, much cooler temperatures and lowering snow
levels to the area tonight into Sunday. Cool and unsettled
conditions appear likely during next week with the potential for
more widespread precipitation late in the week.
&&
.DISCUSSION...as of 9:25 PM PST Saturday...Radar and satellite
shows bands of showers moving through the district. Rainfall
amounts for today have been generally under 1/4 inch. This is
being caused by an upper low over Oregon which is moving east. The
base of the trough will move through the area between 09Z and 15Z
with the highest PVA so shower activity will increase. As colder
air settles in overnight there will be a better chance of small
hail. Snow levels are now around 3000 feet in the North Bay and
will drop down to 1500 feet Sunday morning while in the southern
mountains the snow levels will drop to around 2500 feet. A winter
weather advisory is in effect for the mountains through Sunday
morning. Could see up to 4 to 8 inches at the highest North Bay
Mountains and 6 to 12 inches in the peaks of the Santa Lucias.
Shower activity will decrease inland late Sunday morning and
Sunday afternoon as we transition to an NVA region. Coastal areas
and the coastal waters will still have scattered showers through
the day Sunday. Additional rainfall amounts through Sunday are
expected to be between 1/4 and 1/2 inch...locally higher in heavy
showers.
Dry and cool weather is expected Sunday night and Monday. The
next system comes from the Gulf of Alaska and will merge with an
upper low dropping down from the arctic. While the low is expected
to stay further to the north it will pick up some subtropical
moisture and send it into our district. Rain should begin in the
North Bay Tuesday night and the rest of the area Wednesday. With
the subtropical moisture the coastal mountains will get the most
rain with a rough estimate of 2 to 4 inches. Models indicate this
system moves through fairly rapidly and rain is expected to wind
down Wednesday night.
Medium range models show troffing off the west coast through the
end of the week for continued unsettled weather. But there are
differences with the individual models on how much rain we will
get.
&&
.AVIATION...As of 10:34 PM PST Saturday...A cold front is moving
southeastward with moderate to heavy showers this evening and then
as colder NW winds develop this will lead to lowering snow levels
into Sunday morning. Scattered showers and higher elevation snow
showers Sunday. VFR-MVFR except IFR in showers. Dry weather arrives
late Sunday into Monday.
Vicinity of KSFO...VFR, showers tonight and Sunday morning. A few
lingering showers midday onward through the rest of Sunday.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...VFR, showers occasionally moderate to
heavy tonight into Sunday morning. Lingering showers Sunday
afternoon.
&&
.MARINE...as of 10:15 PM PST Saturday...An upper level low pressure
system over Oregon will move southeast over northern California
tonight and move over the Sierra Nevada Sunday afternoon. This
will usher in another round of chilly air on northwest winds,
occasionally gusting to gale force across the outer waters Sunday
morning. Gusty winds will create hazardous sea conditions across
the waters.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.Tngt...Winter Weather Advisory...CAZ517-518
Winter Weather Advisory...CAZ507-511-512
SCA...Pt Arena to Pt Reyes 0-10 nm
SCA...Pt Reyes to Pigeon Pt 0-10 nm
SCA...Pigeon Pt to Pt Pinos 0-10 nm
SCA...Pt Pinos to Pt Piedras Blancas 0-10 nm
SCA...Pt Arena to Pigeon Pt 10-60 nm
SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm
SCA...Mry Bay
SCA...SF Bay
&&
PUBLIC FORECAST: W Pi
AVIATION/MARINE: Canepa
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www.youtube.com/nwsbayareaThe Sacramento radar (KDAX), 65 km away, was scanning. The volume nearest the first event began at 07:24 UTC.
5 winter weather, 1 flood, 1 strong wind, 1 debris flow, 1 hail. Local standard time, as filed.
Water covering two lanes 7 inches deep.
Large tree down blocking both lanes of roadway 2 miles SSW of Martinez.
Mud and rocks in slow lane on WB HWY 152.
Rain/snow mix at 1600 feet, Redwood Estates.
Estimated 1 inch of snow on ground at Castle Rock State Park.
Hail covering the greens at Pebble Beach suspending final round of the Pro Am.
Estimated 1.5 inches of snow on the ground 5 miles N of Milpitas.
New snow 5.5 inches at the Lick Observatory, snow depth 13 inches.
Snow measured at 1 inch at Charles R Vineyards, 1700 ft elevation.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2019Every state in 2019This day in weather historyWarnings in California, February 2019
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: 800698, 800699, 800700, 800701, 800702, 800703, 800704, 800705, 800706.