Alert archive / California / Small Craft Advisories in 2018

Small Craft Advisory 206, NWS San Francisco Bay Area, CA

October 5, 2018

NWS San Francisco Bay Area, CA issued this small craft advisory at Oct 5, 2018, 2:40 AM PDT. It took effect at Oct 6, 2018, 9:00 AM PDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued
Oct 5, 2018, 2:40 AM PDT (09:40 UTC)
In effect from
Oct 6, 2018, 9:00 AM PDT
Expired
Oct 6, 2018, 9:00 PM PDT
In force
12 hr
Issued by
NWS San Francisco Bay Area, CA

What forecasters said that day

The local office's own words before this small craft advisory 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 small craft advisory went out at Oct 4, 11:01 PM PDT, 3 hours 39 minutes earlier.

Area forecast discussion, Oct 4, 11:01 PM PDT, 3 hours 39 minutes before
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Hazardous weather outlook, Oct 4, 6:53 PM PDT, 7 hours 47 minutes before
Hazardous Weather Outlook
National Weather Service San Francisco CA
653 PM PDT Thu Oct 4 2018

CAZ507-510>512-051300-
North Bay Mountains-East Bay Interior Valleys-
East Bay Hills and the Diablo Range-Santa Cruz Mountains-
653 PM PDT Thu Oct 4 2018

This hazardous weather outlook is for elevations above 1000 feet
in the San Francisco Bay Area, as well as portions of the East Bay
Valleys.

.DAY ONE...Thursday night

Isolated showers will end by evening. Expect partly cloudy and
mild conditions overnight.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

An upper trough is forecast to dig inland to the east of our area
early in the weekend and settle into the Great Basin by late
Saturday. This type of weather scenario in the autumn typically
results in breezy northerly winds across much of our region, and
locally windy conditions in the hills. Northwest winds are
expected to increase along the coast on Saturday afternoon with
local coastal wind gusts up to 40 mph possible by late in the
afternoon. Then, on Saturday night, winds are expected to subside
near the coast, but turn to the north and increase in the hills.
Strongest north winds are expected in the North and East Bay Hills
from late Saturday night into Sunday when wind gusts of up to 50
mph are possible. A Wind Advisory may be need for the North and
East Bay Hills Saturday night into Sunday. Locally windy
conditions are possible elsewhere, including the Santa Cruz
Mountains and isolated areas near sea level around the Delta and
in northeast Contra Costa county.

Winds in the hills are forecast to subside by Sunday afternoon,
but then increase once again Sunday night into Monday morning.
Winds are expected to decrease in all areas by Monday afternoon.

These northerly winds over the weekend will bring a much drier
airmass into the region. Recent rains have decreased fire weather
concerns, especially across much of the North Bay. However, in
those areas that received little or no rain, the combination of
strong and gusty winds and lowering humidity will increase fire
danger, especially by late Sunday. Please continue to monitor
latest forecasts concerning this upcoming wind event.

The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 5, 2:40 AM PDTGale WatchMTR6 hr
Oct 5, 8:56 AM PDTGale WarningMTR24 hr
Oct 5, 11:52 AM PDTWind AdvisoryMTRSan Mateo, Santa Clara, Santa Cruz69 hr
Oct 5, 12:01 PM PDTFire Weather WatchMTRAlameda, Contra Costa, San Mateo, Santa Clara, Santa Cruz22 hr

Nearby

Small Craft Advisories in California, 2018Every small craft advisory in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.