FXUS66 KMTR 021901
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
1201 PM PDT Thu Apr 2 2026

...New SHORT TERM, LONG TERM...

.KEY MESSAGES...
Updated at 1200 PM PDT Thu Apr 2 2026

 - Offshore flow and the warming trend continues into the weekend 

 - Cooler and potentially unsettled weather returns by the middle
   of next week

&&

.SHORT TERM...
Issued at 1200 PM PDT Thu Apr 2 2026
(This evening through Friday)

Dry weather conditions are forecast for the remainder of the day 
in wake of the overnight/early morning frontal passage. Cooler air
advecting in from the north will keep temperatures near seasonal 
averages this afternoon under mostly sunny sky conditions. 
Temperatures will range from the mid to upper 50s along northwest 
facing coastal locations to the mid to upper 60s across the 
interior this afternoon. 

Overnight, temperatures will cool into the upper 30s to lower 40s
across the interior. However, offshore flow (especially in the 
mountains and hills) will return as the center of the mid/upper 
level low pushes into the Intermountain West. North-northeast 
winds with gusts of 40 to 55 mph in the North Bay Interior 
Mountains with gusts of 30 to 45 mph in the East Bay Hills, 
Eastern Santa Clara Hills, and Santa Cruz Mountains. So, less 
confidence for fog development in the interior valleys overnight. 

Friday we will see a warming trend return regionwide as 
temperatures warm 5-10 degrees above seasonal averages as high 
pressure over the eastern Pacific nudges eastward. In addition, 
stronger winds in the higher elevations will prevail on Friday 
aiding in the warming trend with afternoon maximum temperatures 
reaching the low to upper 60s near the coast and low to upper 70s 
across the interior and south- southwest facing coastal locations 
(such as the Santa Cruz region).&&

.LONG TERM...
Issued at 1200 PM PDT Thu Apr 2 2026
(Friday night through next Wednesday)

High pressure will continue to build across the region this 
weekend with temperatures reaching 5-15 degrees above average (up 
to 20 in the warmer interior spots). This is as 850mb temperatures
approach 12-15 degrees C. Offshore winds will also persist 
through the weekend, especially in the aforementioned locations, 
yet are forecast to be weaker than tonight/Friday morning. 

As the high pressure begins to shift eastward, temperatures are 
forecast to cool slightly early next week. There is the potential 
for a mid/upper level cut off low pressure system to approach from
the west bringing cooler and unsettled weather conditions back to
the region by the middle of the upcoming week. However, at this 
time, the greatest probability for rainfall is across the North 
Bay and coastal ranges where there is 15-25% probability of 
reaching or exceeding 0.25" of rainfall ending 5 PM Wednesday 
(next week). Therefore, no flooding or major impacts are expected.
&&

.AVIATION...
(18Z TAFS)
Issued at 1057 AM PDT Thu Apr 2 2026

Dry conditions continue to move in across the forecast area. High
pressure will steepen the ACV-SFO and WMC-SFO pressure gradients
tonight and Friday. Areas of low level wind shear (llws) will 
develop over the Bay Area tonight and Friday morning, highest 
probability of llws will be over the North Bay. VFR in the 18z TAFs.

Vicinity of SFO...VFR. West wind 15 to 25 knots in the afternoon and
early evening. West to northwest wind decreasing to 5 knots tonight
and early Friday morning, shifting to northeasterly around 5 knots
Friday morning. 

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR. West to northwest winds 10 to 20
knots decreasing and becoming light and variable tonight then
southeasterly 5 to 10 knots beginning early Friday morning. 

&&

.MARINE...
(Today through Tuesday)
Issued at 1044 AM PDT Thu Apr 2 2026

Fresh to strong breezes developing over the coastal waters today 
including across the bays later this morning and afternoon. The 
stronger winds will result in hazardous conditions. Northerly 
breezes diminish and seas abate by the weekend.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...None.
PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this 
     evening for SF Bay N of Bay Bridge.

     Small Craft Advisory until 3 AM PDT Friday for Mry Bay-Pigeon Pt 
     to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos 
     to Pt Piedras Blancas 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.

     Small Craft Advisory until 3 PM PDT Friday for Pt Arena to Pt 
     Reyes 10-60 NM.

     Small Craft Advisory until 9 AM PDT Friday for Pigeon Pt to Pt 
     Pinos 10-60 NM.

&&

$$

SHORT TERM...RGass
LONG TERM....RGass
AVIATION...Canepa
MARINE...Canepa

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Prepared by Boulder-Creek.com Weather at: Thu Apr 2 12:30:02 PDT 2026