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 12:30:03 PDT 2026