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FXUS66 KMTR [Monterey CA] 270349 AFDMTR 

FXUS66 KMTR 270349
AFDMTR [HEAD]

National Weather Service San Francisco California 8:49pm PDT Fri Jul 26 2024 

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
849 PM PDT FRI JUL 26 2024 [HEAD]

New update, marine.  

...NEW UPDATE, MARINE... [DISC]

Synopsis. Issued at 3:05am PDT Friday July 26 2024 

.SYNOPSIS...
ISSUED AT 305 AM PDT FRI JUL 26 2024 [DISC]

Temperatures cool down more significantly beginning today with below average temperatures to persist through mid next week. Some potential for light drizzle along the coast Friday into Saturday and Saturday into Sunday. 

TEMPERATURES COOL DOWN MORE SIGNIFICANTLY BEGINNING TODAY WITH
BELOW AVERAGE TEMPERATURES TO PERSIST THROUGH MID NEXT WEEK. SOME
POTENTIAL FOR LIGHT DRIZZLE ALONG THE COAST FRIDAY INTO SATURDAY
AND SATURDAY INTO SUNDAY. [DISC]

Update. Issued at 8:44pm PDT Friday July 26 2024 

.UPDATE...
ISSUED AT 844 PM PDT FRI JUL 26 2024 [DISC]

Satellite imagery shows stratus building into the North Bay valleys, the northern San Francisco Bay, the Monterey Bay region, and into the Salinas Valley. Expect further stratus development through the night with the Fort Ord profiler [instrument designed to measure horizontal winds directly above its location, and thus measure the vertical wind profile. Profilers operate on the same principles as Doppler radar.] now showing a marine layer over 2000 feet deep. Stratus will pare back to the coastal regions during the morning, but could persist all day in the western half of Marin County, the northern San Francisco Bay (including the city of San Francisco and Oakland), and the southern Monterey Bay. The forecast remains on track with no updates necessary. 

SATELLITE IMAGERY SHOWS STRATUS BUILDING INTO THE NORTH BAY
VALLEYS, THE NORTHERN SAN FRANCISCO BAY, THE MONTEREY BAY REGION,
AND INTO THE SALINAS VALLEY. EXPECT FURTHER STRATUS DEVELOPMENT
THROUGH THE NIGHT WITH THE FORT ORD PROFILER NOW SHOWING A MARINE
LAYER OVER 2000 FEET DEEP. STRATUS WILL PARE BACK TO THE COASTAL
REGIONS DURING THE MORNING, BUT COULD PERSIST ALL DAY IN THE
WESTERN HALF OF MARIN COUNTY, THE NORTHERN SAN FRANCISCO BAY
(INCLUDING THE CITY OF SAN FRANCISCO AND OAKLAND), AND THE
SOUTHERN MONTEREY BAY. THE FORECAST REMAINS ON TRACK WITH NO
UPDATES NECESSARY. [DISC]

Dialh 

DIALH [CRED]

Short term. (this evening through tonight) issued at 12:54pm PDT Friday July 26 2024 

.SHORT TERM...
(THIS EVENING THROUGH TONIGHT)
ISSUED AT 1254 PM PDT FRI JUL 26 2024 [DISC]

Temperatures look to peak in the mid-to-upper 90's across the far interior, 70's and 80's around the South Bay and North Bay valleys, and upper 50's to 60's near the coast this afternoon. Tonight, expecting more widespread low clouds, fog, and coastal drizzle to impact the region as the marine layer deepens. This is in response to a mid/upper level trough moving across the region. Minimum temperatures are forecast to be in the upper 40's across the colder interior spots with 50's elsewhere. 

TEMPERATURES LOOK TO PEAK IN THE MID-TO-UPPER 90`S ACROSS THE FAR
INTERIOR, 70`S AND 80`S AROUND THE SOUTH BAY AND NORTH BAY VALLEYS,
AND UPPER 50`S TO 60`S NEAR THE COAST THIS AFTERNOON. TONIGHT,
EXPECTING MORE WIDESPREAD LOW CLOUDS, FOG, AND COASTAL DRIZZLE TO
IMPACT THE REGION AS THE MARINE LAYER DEEPENS. THIS IS IN RESPONSE
TO A MID/UPPER LEVEL TROUGH MOVING ACROSS THE REGION. MINIMUM
TEMPERATURES ARE FORECAST TO BE IN THE UPPER 40`S ACROSS THE COLDER
INTERIOR SPOTS WITH 50`S ELSEWHERE. [DISC]

Long term. (Saturday through Thursday) issued at 3:05am PDT Friday July 26 2024 

.LONG TERM...
(SATURDAY THROUGH THURSDAY)
ISSUED AT 305 AM PDT FRI JUL 26 2024 [DISC]

Temperatures continue to cool Saturday and Sunday with widespread 70s to 80s expected inland and 60s to 70s expected closer to the coast. Upper level troughing will continue to deepen over the weekend which will help to keep temperatures cooler and contribute to some slight potential for light drizzle. Overnight Friday into Saturday and Saturday into Sunday, decent low level moisture at 850 mb and 700 mb will support the development of light drizzle to light rain along the coast and in areas where upslope ascent is favored. Both the NBM and the HRRR pick up on light coastal drizzle overnight this weekend with some potential for light showers over the marine environment. The NBM is showing very light precipitation totals along the coast and bay shoreline with totals ranging from a trace to a few hundredths of an inch. 

TEMPERATURES CONTINUE TO COOL SATURDAY AND SUNDAY WITH WIDESPREAD
70S TO 80S EXPECTED INLAND AND 60S TO 70S EXPECTED CLOSER TO THE
COAST. UPPER LEVEL TROUGHING WILL CONTINUE TO DEEPEN OVER THE
WEEKEND WHICH WILL HELP TO KEEP TEMPERATURES COOLER AND CONTRIBUTE
TO SOME SLIGHT POTENTIAL FOR LIGHT DRIZZLE. OVERNIGHT FRIDAY INTO
SATURDAY AND SATURDAY INTO SUNDAY, DECENT LOW LEVEL MOISTURE AT
850MB AND 700MB WILL SUPPORT THE DEVELOPMENT OF LIGHT DRIZZLE TO
LIGHT RAIN ALONG THE COAST AND IN AREAS WHERE UPSLOPE ASCENT IS
FAVORED. BOTH THE NBM AND THE HRRR PICK UP ON LIGHT COASTAL DRIZZLE
OVERNIGHT THIS WEEKEND WITH SOME POTENTIAL FOR LIGHT SHOWERS OVER
THE MARINE ENVIRONMENT. THE NBM IS SHOWING VERY LIGHT PRECIPITATION
TOTALS ALONG THE COAST AND BAY SHORELINE WITH TOTALS RANGING FROM A
TRACE TO A FEW HUNDREDTHS OF AN INCH. [DISC]

The upper level pattern will become more zonal by early next week which will allow for temperatures to warm slightly. In general, temperatures are expected to gradually increase a few degrees each day beginning Monday but high temperatures will still remain below average through mid-week. By mid to late next week, a little more uncertainty enters the forecast in regards to how fast high temperatures will warm up again. Ensemble guidance indicates ridging will start to build over the Western US by mid to late next week but cluster analysis indicates that it is less certain where exactly the ridge will set up. Temperatures could be slightly warmer depending on if the ridge is centered more directly over the West Coast vs temperatures could be slightly cooler if the ridge is centered to the east of the coast. Regardless, it is looking likely that above average temperatures will return with the current forecast and the CPC [Climate Prediction Center] 8–14 day outlook both in support of slightly above average temperatures returning by the first week of August. 

THE UPPER LEVEL PATTERN WILL BECOME MORE ZONAL BY EARLY NEXT WEEK
WHICH WILL ALLOW FOR TEMPERATURES TO WARM SLIGHTLY. IN GENERAL,
TEMPERATURES ARE EXPECTED TO GRADUALLY INCREASE A FEW DEGREES EACH
DAY BEGINNING MONDAY BUT HIGH TEMPERATURES WILL STILL REMAIN BELOW
AVERAGE THROUGH MID-WEEK. BY MID TO LATE NEXT WEEK, A LITTLE MORE
UNCERTAINTY ENTERS THE FORECAST IN REGARDS TO HOW FAST HIGH
TEMPERATURES WILL WARM UP AGAIN. ENSEMBLE GUIDANCE INDICATES RIDGING
WILL START TO BUILD OVER THE WESTERN US BY MID TO LATE NEXT WEEK BUT
CLUSTER ANALYSIS INDICATES THAT IT IS LESS CERTAIN WHERE EXACTLY THE
RIDGE WILL SET UP. TEMPERATURES COULD BE SLIGHTLY WARMER DEPENDING
ON IF THE RIDGE IS CENTERED MORE DIRECTLY OVER THE WEST COAST VS
TEMPERATURES COULD BE SLIGHTLY COOLER IF THE RIDGE IS CENTERED TO
THE EAST OF THE COAST. REGARDLESS, IT IS LOOKING LIKELY THAT ABOVE
AVERAGE TEMPERATURES WILL RETURN WITH THE CURRENT FORECAST AND THE
CPC 8-14 DAY OUTLOOK BOTH IN SUPPORT OF SLIGHTLY ABOVE AVERAGE
TEMPERATURES RETURNING BY THE FIRST WEEK OF AUGUST. [DISC]

Aviation. (00Z [5pm PDT] TAFs [Terminal Aerodrome Forecasts]) issued at 5:11pm PDT Friday July 26 2024 

.AVIATION...
(00Z TAFS)
ISSUED AT 511 PM PDT FRI JUL 26 2024 [AVIA]

LIFR [Low Instrument Flight Rules]/IFR [Instrument Flight Rules] ceilings are affecting the immediate coast and will fill over the Monterey Bay and SF Bay terminals later this evening as winds reduce. Ceilings continue to move inland overnight, affecting the remainder of the TAF [Terminal Aerodrome Forecast] sites. Winds are expected to stay light to moderate overnight, with some pockets of mist and fog forming in areas with the lightest winds. Ceilings erode in the more inland areas in the mid morning, while the Monterey Bay sees clearing in the afternoon, however cloud cover looks to remain over the SF Bay for the remainder of the TAF [Terminal Aerodrome Forecast] period. 

LIFR/IFR CIGS ARE AFFECTING THE IMMEDIATE COAST AND WILL FILL OVER
THE MONTEREY BAY AND SF BAY TERMINALS LATER THIS EVENING AS WINDS
REDUCE. CIGS CONTINUE TO MOVE INLAND OVERNIGHT, AFFECTING THE
REMAINDER OF THE TAF SITES. WINDS ARE EXPECTED TO STAY LIGHT TO
MODERATE OVERNIGHT, WITH SOME POCKETS OF MIST AND FOG FORMING IN
AREAS WITH THE LIGHTEST WINDS. CIGS ERODE IN THE MORE INLAND AREAS
IN THE MID MORNING, WHILE THE MONTEREY BAY SEES CLEARING IN THE
AFTERNOON, HOWEVER CLOUD COVER LOOKS TO REMAIN OVER THE SF BAY FOR
THE REMAINDER OF THE TAF PERIOD. [AVI2]

Vicinity of SFO [San Francisco CA]… breezy winds reduce in the evening as IFR [Instrument Flight Rules] ceilings arrive. Expect these ceilings and moderate winds through the night and into Saturday morning. Ceilings lift to MVFR [Marginal Visual Flight Rules] levels into Saturday afternoon as breezy westerly winds arrive. Ceilings are expected through the rest of the TAF [Terminal Aerodrome Forecast] period. 

VICINITY OF SFO...BREEZY WINDS REDUCE IN THE EVENING AS IFR CIGS
ARRIVE. EXPECT THESE CIGS AND MODERATE WINDS THROUGH THE NIGHT AND
INTO SATURDAY MORNING. CIGS LIFT TO MVFR LEVELS INTO SATURDAY
AFTERNOON AS BREEZY WESTERLY WINDS ARRIVE. CIGS ARE EXPECTED THROUGH
THE REST OF THE TAF PERIOD. [AVI2]

SFO [San Francisco CA] bridge approach… similar to SFO [San Francisco CA], with some chances of spotty IFR [Instrument Flight Rules]-level cloud cover early Tuesday morning. 

SFO BRIDGE APPROACH...SIMILAR TO SFO, WITH SOME CHANCES OF SPOTTY
IFR-LEVEL CLOUD COVER EARLY TUESDAY MORNING. [AVI2]

Monterey Bay terminals… LIFR [Low Instrument Flight Rules]/IFR [Instrument Flight Rules] ceilings and mist push inland this evening and last until the late morning before lifting, and eroding into the afternoon as breezy winds arrive. Ceilings move inland again in the late afternoon on Saturday, filling over MRY [Monterey CA]

MONTEREY BAY TERMINALS...LIFR/IFR CIGS AND MIST PUSH INLAND THIS
EVENING AND LAST UNTIL THE LATE MORNING BEFORE LIFTING, AND ERODING
INTO THE AFTERNOON AS BREEZY WINDS ARRIVE. CIGS MOVE INLAND AGAIN IN
THE LATE AFTERNOON ON SATURDAY, FILLING OVER MRY. [AVI2]

Marine. (tonight through next Thursday) issued at 8:44pm PDT Friday July 26 2024 

.MARINE...
(TONIGHT THROUGH NEXT THURSDAY)
ISSUED AT 844 PM PDT FRI JUL 26 2024 [AVIA]

Moderate to breezy northwest winds linger through the weekend before easing into the next work week. Expect some hazardous gusts in the northern outer waters as well as along the Big Sur coast. Significant wave heights will continue to abate through the weekend. 

MODERATE TO BREEZY NORTHWEST WINDS LINGER THROUGH THE WEEKEND
BEFORE EASING INTO THE NEXT WORK WEEK. EXPECT SOME HAZARDOUS GUSTS
IN THE NORTHERN OUTER WATERS AS WELL AS ALONG THE BIG SUR COAST.
SIGNIFICANT WAVE HEIGHTS WILL CONTINUE TO ABATE THROUGH THE
WEEKEND. [AVI2]

MTR Watches/Warnings/Advisories

  • California: none.
  • Pacific Ocean: Small Craft Advisory until 9am PDT Saturday for SF Bay N of Bay Bridge. 
.MTR WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
PZ...SMALL CRAFT ADVISORY UNTIL 9 AM PDT SATURDAY FOR SF BAY N OF BAY
BRIDGE. [WARN]
  • Small Craft Advisory from 3pm to 9pm PDT Saturday for Pt Pinos [Monterey CA] to Pt Piedras Blancas [San Simeon CA] 0–10 nm [11 miles]
     SMALL CRAFT ADVISORY FROM 3 PM TO 9 PM PDT SATURDAY FOR PT PINOS
TO PT PIEDRAS BLANCAS 0-10 NM. [WRN2]
  • Small Craft Advisory until 3am PDT Sunday for Pt Arena [Mendocino CA] to Pt Reyes [San Francisco CA] 10–60 nm [69 miles]
     SMALL CRAFT ADVISORY UNTIL 3 AM PDT SUNDAY FOR PT ARENA TO PT
REYES 10-60 NM. [WRN2]
  • Small Craft Advisory until 3am PDT Saturday for Pigeon Pt [Pescadero CA] to Pt Pinos [Monterey CA] 10–60 nm [69 miles]
     SMALL CRAFT ADVISORY UNTIL 3 AM PDT SATURDAY FOR PIGEON PT TO PT
PINOS 10-60 NM. [WRN2]
  • Short term…rgass long term…Kennedy aviation…murdock marine…murdock 
SHORT TERM...RGASS
LONG TERM....KENNEDY
AVIATION...MURDOCK
MARINE...MURDOCK [WRN2]
VISIT US AT WWW.WEATHER.GOV/SANFRANCISCO [LINK]

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Point Forecast

Montara CA

26 Jul 08:35pm PDT

Tonight A slight chance of drizzle after 11pm. Cloudy, with a low around 54°. West wind around 10 mph.
Saturday A slight chance of drizzle before 11am. Cloudy, with a high near 60°. West wind around 10 mph.
Saturday Night A slight chance of drizzle after 11pm. Cloudy, with a low around 54°. West wind 7 to 9 mph.
Sunday A slight chance of drizzle before 11am. Cloudy, with a high near 59°. WSW wind 7 to 9 mph.
Sunday Night A slight chance of drizzle after 11pm. Cloudy, with a low around 54°. West wind around 7 mph.
Monday A slight chance of drizzle before 11am. Mostly cloudy, with a high near 60°.
Monday Night A slight chance of drizzle after 11pm. Cloudy, with a low around 56°.
Tuesday A slight chance of drizzle before 11am. Cloudy, with a high near 60°.
Tuesday Night Cloudy, with a low around 55°.
Wednesday Mostly cloudy, with a high near 60°.
Wednesday Night Mostly cloudy, with a low around 54°.
Thursday Mostly cloudy, with a high near 60°.
Thursday Night Cloudy, with a low around 55°.
Friday Mostly cloudy, with a high near 61°.
Tonight
A slight chance of drizzle after 11pm. Cloudy, with a low around 54. West wind around 10 mph.
Saturday
A slight chance of drizzle before 11am. Cloudy, with a high near 60. West wind around 10 mph.
Saturday Night
A slight chance of drizzle after 11pm. Cloudy, with a low around 54. West wind 7 to 9 mph.
Sunday
A slight chance of drizzle before 11am. Cloudy, with a high near 59. West southwest wind 7 to 9 mph.
Sunday Night
A slight chance of drizzle after 11pm. Cloudy, with a low around 54. West wind around 7 mph.
Monday
A slight chance of drizzle before 11am. Mostly cloudy, with a high near 60.
Monday Night
A slight chance of drizzle after 11pm. Cloudy, with a low around 56.
Tuesday
A slight chance of drizzle before 11am. Cloudy, with a high near 60.
Tuesday Night
Cloudy, with a low around 55.
Wednesday
Mostly cloudy, with a high near 60.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Mostly cloudy, with a high near 60.
Thursday Night
Cloudy, with a low around 55.
Friday
Mostly cloudy, with a high near 61.

This page is generated dynamically from the National Weather Service's NWS point forecast and Area Forecast Discussion, reformatted for readability. NWS glossary; about point forecasts. For more information, visit the Lobitos Weather Project home page. Comments and corrections are welcome: