FXUS66 KMTR 250444
AFDMTR
Area Forecast Discussion
National Weather Service San Francisco CA
944 PM PDT Fri Apr 24 2026
...New AVIATION, MARINE...
.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...
(06Z TAFS)
Issued at 944 PM PDT Fri Apr 24 2026
VFR-MVFR conditions continue tonight and Saturday. A few areas of
light drizzle develop tonight and Saturday morning. A low pressure
system will be nearby Saturday with a mix of light drizzle, light
rain and rapid cooling aloft may result in showers. It's somewhat
of a complex forecast in the nearest term since the 500 mb low will
be strengthening as it moves eastward through a long wave trough that
extends from CA/NV/AZ to MT/WY. Across the north Central Coast showers
may become moderate to heavy Saturday afternoon and evening.
Vicinity of SFO...VFR. A few showers developing Saturday afternoon
through Saturday night. West wind diminishing to 5 to 12 knots
tonight through Saturday.
SFO Bridge Approach...Similar to SFO.
Monterey Bay Terminals...VFR-MVFR. Light coastal drizzle develops
tonight and Saturday morning. Showers also developing Saturday with
a low pressure system nearby. Showers may become moderate to heavy
in the afternoon and evening. Mainly west to southwest winds near
10 knots. It is possible a southeasterly wind develops in the
Salinas Valley if surface pressures lower more than current model
forecasts.
&&
.MARINE...
(Tonight through next Thursday)
Issued at 916 PM PDT Fri Apr 24 2026
Expect mainly 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...Canepa
MARINE...Canepa
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Prepared by Boulder-Creek.com Weather at: Fri Apr 24 22:30:03 PDT 2026
From the National Weather Service
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