textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 1230 PM PDT Sat Jun 13 2026

- Continued hot and dry today and tomorrow for interior communities with Moderate HeatRisk.

- Minor coastal flooding due to higher than normal high tides anticipated across coastal regions of the San Francisco Bay Area and Central California Coast.

- Hazardous beach conditions return by Sunday with increased risk of sneaker waves and strong rip currents.

SHORT TERM

Issued at 1230 PM PDT Sat Jun 13 2026 (This evening through Sunday)

GOES-West visible imagery shows clear skies across most of the area with lingering stratus hugging close to the Pacific coastal communities and western San Francisco. The stratus will continue to recede to the marine environment this afternoon but will return overnight.

Upper-level pattern continues to be dominated by ridging over the eastern Pacific. While a few degrees cooler than yesterday, ridging will keep afternoon high temperatures warmer than usual, particularly for interior areas. High temperatures will be in the 80s to near 100 degrees for far inland locations leading to localized Moderate HeatRisk, especially noted in the Santa Clara Valley and Alameda and Contra Costa counties. The Heat Advisory will end at 7 PM PDT this evening however precautions should continue to be taken to alleviate the risk for heat related illnesses Sunday through Tuesday. Ways to stay safe during the heat is to wear light weight, loose clothing, drink water frequently, and spend time in the shade or in air conditioned buildings. Know the difference between heat exhaustion and heat stroke, keeping in mind that heat stroke is a medical emergency.

High tide flooding will continue to occur nightly along the low- lying areas of the Bayshore and the Pacific Coast through the middle of next week. The combination of an upcoming new moon and lunar perigee on Sunday, about 7 inches of additional tidal anomaly from a combination of storm surge, thermal expansion of the Eastern Pacific, and about 2 inches inches of Sea Level Rise since the vertical datums were established in the 80s and 90s will add up to bring tides up to 2.0 feet above normal through early next week. While lower than the historic tidal flooding in January (peaked at 2.6 ft) the tides this weekend could end up being the highest observed in the Summer, beating the current record of 1.7 ft from July 2022.

LONG TERM

Issued at 1230 PM PDT Sat Jun 13 2026 (Sunday night through next Friday)

Starting tomorrow, the high pressure situated over the Pacific will flatten and begin to weaken slightly, allowing for daytime temperatures to gradually cool and return to mid-June climatological normal. Usual June stratus along the Pacific Coast is expected for the next several days.

AVIATION

(00Z TAFS) Issued at 355 PM PDT Sat Jun 13 2026

A persistence pattern remains in place across the region which is bringing increasing confidence for marine stratus to impact most terminals tonight and overnight, outside of the deep interior. Daytime heating successfully eroded the morning stratus deck back to the coast, but a robust evening push is expected to drive IFR to LIFR ceilings back inland tonight. Satellite imagery continues to hold stratus across KHAF and has now filled in across KSNS. High resolution and probabilistic guidance has trended towards stratus moving into the adjacent coastal valleys before spilling through the gaps and North Bay valleys into the San Francisco Bay overnight. Lowest visibility restrictions will be found immediately along the coast while the lower-lying inland valleys will see wider-ranging and less restrictive visibilities overnight. Conversely, deep interior locations will remain free of ceiling impacts. Wind speeds to diminish tonight and overnight, with marine stratus burning off through tomorrow late morning into the afternoon.

Vicinity of SFO... High confidence for VFR conditions continuing late tonight with moderate confidence that stratus will start will fill in across the Bay and into the terminal overnight. Current northwest winds will remain a little breezy between 15-20 knots into the evening before subsiding after sunset.

SFO Bridge Approach... Similar to SFO

Vicinity of SJC and OAK... For OAK, VFR is expected to prevail until late tonight before stratus pushes in across the Bay, bringing likely IFR stratus. SJC will be more removed from the marine influence bringing higher confidence for VFR conditions through the TAF period, with some some transient low-level moisture possible overnight.

Monterey Bay Terminals... High confidence persistence forecast for KMRY and KSNS as the marine layer remains deeply entrenched across the bay. Stratus has already filled in across the valley through KSNS and will continue to fill in across KMRY over the next several hours. Periods of IFR to LIFR cigs are expected overnight along with decreasing visibilities through the mid-morning hours.

MARINE

(Tonight through next Thursday) Issued at 355 PM PDT Sat Jun 13 2026

Gentle southerly breezes and moderate to rough seas with a low south-southwesterly swell persist across most of the coastal waters. Fresh to strong breezes will be possible along the Big Sur coast through this evening. Winds will remain fairly consistent through the weekend as the seas subside.

BEACHES

Issued at 1230 PM PDT Sat Jun 13 2026

Long period southerly swell will continue through the weekend, especially for south and southwest facing beaches. Hazardous beach conditions are advertised, specifically for moderate to steeply sloped beaches along the Pacific Coast of the North Bay, San Mateo, Santa Cruz counties. A Beach Hazards Statement is in effect for Pacific coast beaches along the central coast and the Bay Area coast from late tonight through late Tuesday night. Be sure check beach conditions before you head out. Sneaker waves will run up the beach much farther than other waves, potentially catching beachgoers by surprise and resulting in people being swept into the water. Rip currents are strong enough to pull the strongest swimmers away from shore. Swim near a lifeguard if possible. Stay back from the beach, and away from jetties, piers, beachside rocks, and other infrastructure near the water. Never turn your back to the ocean!

MTR WATCHES/WARNINGS/ADVISORIES

CA...Coastal Flood Advisory until 3 AM PDT Wednesday for CAZ006-506- 508.

Beach Hazards Statement from 3 AM PDT Sunday through late Tuesday night for CAZ006-505-509-529-530.

Coastal Flood Advisory from 7 PM this evening to 3 AM PDT Tuesday for CAZ505-509-529-530.

Heat Advisory until 7 PM PDT this evening for CAZ510-513>515.

PZ...Small Craft Advisory until 9 PM PDT this evening for Pt Pinos to Pt Piedras Blancas 0-10 nm.