FXUS66 KMTR 241919
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
1219 PM PDT Fri Apr 24 2026
...New SHORT TERM, LONG TERM...
.KEY MESSAGES...
Updated at 1217 PM PDT Fri Apr 24 2026
- Additional rounds of drizzle/light rain likely tonight through
Sunday
- Below normal temperatures this weekend before a warming trend
kicks off early next week
&&
.SHORT TERM...
Issued at 1217 PM PDT Fri Apr 24 2026
(This evening through Sunday)
A mix of low (mainly over the Pacific), mid, and high level
clouds are seen via satellite imagery early this afternoon.
However, where low clouds were slower to clear late this morning,
we could see temperatures not reach their forecast maximum
temperatures. This is especially so over the North Bay. We are
still forecasting mid 60s to lower 70s across the interior with
upper 50s to mid 60s in coastal areas this afternoon as low clouds
continue to dissipate.
A cut-off mid/upper level low pressure is forecast to develop off
of the Bay Area and northern Central Coast tonight and gradually
shift inland across the Central Coast on Sunday. This will likely
result in drizzle and/or light rain across much of the Bay Area
and northern Central Coast through the weekend. Rainfall amounts
are forecast to be light, generally a few hundredths of an inch or
so through Sunday afternoon. The greatest potential to see
greater than 0.10" will be across the Santa Cruz Mountains and the
Santa Lucia Range due to orographic lift along the coastal
slopes. While rainfall amounts are forecast to be light, slick
roadways are anticipated this weekend.
In addition to the drizzle/light rain potential, cooler
temperatures are also forecast for the weekend with afternoon
highs up to 10 degrees below seasonal averages. On the flip side,
increased cloud cover will result in overnight/morning lows up to
a few degrees above normal.
&&
.LONG TERM...
Issued at 1217 PM PDT Fri Apr 24 2026
(Sunday night through next Thursday)
Drier conditions are expected for Monday through next weekend
with a gradual warming trend through the period. However, general
troughing across the region will limit any type of significant
warm up with interior areas warming into the mid 70s by Thursday
afternoon. Meanwhile, coastal areas will remain in the upper 50s
to 60s. The 6- 10 Day Temperature Outlook from the CPC indicates
the warming trend.
&&
.AVIATION...
(18Z TAFS)
Issued at 1138 AM PDT Fri Apr 24 2026
Clouds this morning continue to erode leaving a mix of mainly MVFR
to VFR conditions. Expect this trend to continue with most sites
seeing a few hours of VFR cigs, the exception might be KHAF. Low
clouds return tonight, which should bring widespread MVFR cigs,
perhaps a few pockets of IFR. Drizzle will be possible along the
coast, which could drop cigs and vis even more. Medium to high
confidence in the forecast.
Vicinity of SFO...Satellite this morning shows clods eroding east
of SFO, while maintaining west of the airport. VFR conditions may
prevail over the next few hours if clouds remain on the western half
of the range ring. Otherwise expect conditions to bounce/flirt with
MVFR and VFR conditions for the next few hours before becoming VFR
for a brief period. A return of cigs is expected tonight and should
have a similar trend tomorrow morning. Medium to high confidence in
the forecast.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...Monterey Bay has cleared out this morning,
with pockets of cumulus remaining anchored to the terrain. Most
sites will be VFR for the afternoon, with KMRY having lingering MVFR
cigs for the next couple of hours. MVFR cigs return tonight along
with the chance for some coastal drizzle.
&&
.MARINE...
(Today through Wednesday)
Issued at 859 AM PDT Fri Apr 24 2026
Choppy seas will begin to gradually subside today and continue to
do so into the weekend. Mainly moderate northwest winds continue
through today and become moderate west to northwest breezes for
the weekend. Drizzle and light rain remain in the forecast,
favoring the southern waters and areas along the coast this
weekend.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...None.
&&
$$
SHORT TERM...RGass
LONG TERM....RGass
AVIATION...KR
MARINE...KR
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Prepared by Boulder-Creek.com Weather at: Fri Apr 24 14:30:03 PDT 2026
From the National Weather Service
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