Alert archive / California / Small Craft Advisories in 2021
Small Craft Advisory 198, NWS San Francisco Bay Area, CA
NWS San Francisco Bay Area, CA issued this small craft advisory at Aug 30, 2021, 2:14 PM PDT. It took effect at Aug 31, 2021, 3:00 AM PDT. It was in force for 60 hr.
The area
The counties it named.
The facts
- Issued
- Aug 30, 2021, 2:14 PM PDT (21:14 UTC)
- In effect from
- Aug 31, 2021, 3:00 AM PDT
- Expired
- Sep 2, 2021, 3:00 PM PDT
- In force
- 60 hr
- Issued by
- NWS San Francisco Bay Area, CA
The text
As transmitted.
147 WHUS76 KMTR 302114 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 214 PM PDT Mon Aug 30 2021 PZZ570-310515- /O.CON.KMTR.GL.W.0037.000000T0000Z-210831T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 214 PM PDT Mon Aug 30 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...Northwest winds 20 to 30 kt with gusts up to 40 kt and seas 11 to 13 feet at 09 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ530-310515- /O.EXB.KMTR.SC.Y.0195.210830T2200Z-210831T0400Z/ /O.NEW.KMTR.SC.Y.0198.210831T2200Z-210901T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 214 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM TO 9 PM PDT TUESDAY... * WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 30 kt expected. For the second Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...For the Small Craft Advisory, until 9 PM PDT this evening. For the Small Craft Advisory, from 3 PM to 9 PM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ571-310515- /O.EXT.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 214 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 20 to 30 kt with gusts up to 35 kt and seas 8 to 12 feet at 09 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ575-310515- /O.EXT.KMTR.SC.Y.0197.210830T2200Z-210901T0400Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 214 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PDT TUESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 11 feet at 09 seconds expected. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ576-310515- /O.EXT.KMTR.SC.Y.0197.210831T0400Z-210831T2200Z/ Waters from Point Pinos to Point Piedras Blancas 10-60 NM- 214 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 9 PM THIS EVENING TO 3 PM PDT TUESDAY... * WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt and seas 8 to 10 feet at 12 seconds expected. * WHERE...Waters from Point Pinos to Point Piedras Blancas 10- 60 NM. * WHEN...From 9 PM this evening to 3 PM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ545-310515- /O.EXT.KMTR.SC.Y.0197.210830T2200Z-210831T1600Z/ Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm- 214 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PDT TUESDAY... * WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt expected, resulting in hazardous conditions near harbor entrances. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm. * WHEN...Until 9 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Small craft should use extreme caution when navigating in or near harbor entrances. && $$ PZZ540-310515- /O.CON.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 214 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 6 to 11 feet at 09 seconds. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
13 follow-up statements
090 WHUS76 KMTR 310353 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 853 PM PDT Mon Aug 30 2021 PZZ530-311200- /O.EXP.KMTR.SC.Y.0195.000000T0000Z-210831T0400Z/ /O.CON.KMTR.SC.Y.0198.210831T2200Z-210901T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 853 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM TO 9 PM PDT TUESDAY... ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 PM PDT THIS EVENING... * WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 3 PM to 9 PM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ570-311000- /O.CON.KMTR.GL.W.0037.000000T0000Z-210831T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 853 PM PDT Mon Aug 30 2021 ...GALE WARNING REMAINS IN EFFECT UNTIL 3 AM PDT TUESDAY... * WHAT...Northwest winds 25 to 30 kt with gusts up to 35 kt and seas 11 to 13 feet at 13 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Tuesday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe conditions. && $$ PZZ571-311200- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 853 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 20 to 30 kt with gusts up to 35 kt and seas 8 to 12 feet at 13 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ575-311200- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T0400Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 853 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT TUESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 11 feet at 12 seconds. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...Until 9 PM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ576-311200- /O.CON.KMTR.SC.Y.0197.210831T0400Z-210831T2200Z/ Waters from Point Pinos to Point Piedras Blancas 10-60 NM- 853 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT TUESDAY... * WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt and seas 8 to 10 feet at 12 seconds expected. * WHERE...Waters from Point Pinos to Point Piedras Blancas 10- 60 NM. * WHEN...Until 3 PM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ540-311200- /O.CON.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 853 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 6 to 11 feet at 13 seconds. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ545-311200- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210831T1600Z/ Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm- 853 PM PDT Mon Aug 30 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT TUESDAY... * WHAT...Northwest winds 10 to 20 kt with gusts up to 30 kt, resulting in hazardous conditions near harbor entrances. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm. * WHEN...Until 9 AM PDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Small craft should use extreme caution when navigating in or near harbor entrances. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
766 WHUS76 KMTR 310954 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 254 AM PDT Tue Aug 31 2021 PZZ570-311800- /O.EXP.KMTR.GL.W.0037.000000T0000Z-210831T1000Z/ /O.EXB.KMTR.SC.Y.0198.210831T1000Z-210902T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM PDT THURSDAY... ...GALE WARNING WILL EXPIRE AT 3 AM PDT EARLY THIS MORNING... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 12 feet at 13 seconds expected. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ530-311800- /O.CON.KMTR.SC.Y.0198.210831T2200Z-210901T0400Z/ /O.NEW.KMTR.SC.Y.0199.210901T1600Z-210901T2200Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM TO 3 PM PDT WEDNESDAY... * WHAT...For the first Small Craft Advisory, southwest winds 10 to 15 kt with gusts up to 25 kt expected. For the second Small Craft Advisory, southwest winds 10 to 15 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...For the Small Craft Advisory, from 3 PM this afternoon to 9 PM PDT this evening. For the Small Craft Advisory, from 9 AM to 3 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ575-311800- /O.EXT.KMTR.SC.Y.0197.000000T0000Z-210831T2200Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 feet at 13 seconds. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...Until 3 PM PDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ576-311100- /O.EXT.KMTR.SC.Y.0197.000000T0000Z-210831T1000Z/ Waters from Point Pinos to Point Piedras Blancas 10-60 NM- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT EARLY THIS MORNING... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 feet at 13 seconds. * WHERE...Waters from Point Pinos to Point Piedras Blancas 10- 60 NM. * WHEN...Until 3 AM PDT early this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ571-311800- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 11 feet at 13 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ540-311800- /O.CON.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 10 feet at 13 seconds. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ545-311600- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210831T1600Z/ Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm- 254 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...West winds 5 to 15 kt with gusts up to 30 kt, resulting in hazardous conditions near harbor entrances. * WHERE...Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft especially when navigating in or near harbor entrances. PRECAUTIONARY/PREPAREDNESS ACTIONS... Small craft should use extreme caution when navigating in or near harbor entrances. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
858 WHUS76 KMTR 311534 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 834 AM PDT Tue Aug 31 2021 PZZ545-311645- /O.EXP.KMTR.SC.Y.0197.000000T0000Z-210831T1600Z/ Coastal Waters from Point Reyes to Pigeon Point California out to 10 nm- 834 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... WINDS HAVE FALLEN BELOW SMALL CRAFT CRITERIA. $$ PZZ530-312345- /O.CON.KMTR.SC.Y.0198.210831T2200Z-210901T0400Z/ /O.CON.KMTR.SC.Y.0199.210901T1600Z-210901T2200Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 834 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM TO 3 PM PDT WEDNESDAY... * WHAT..West winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...For the Small Craft Advisory, from 3 PM this afternoon to 9 PM PDT this evening. For the Small Craft Advisory, from 9 AM to 3 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ570-312345- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210902T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 834 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 12 feet at 9 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ571-312345- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 834 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 9 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ575-312200- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210831T2200Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 834 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 feet at 9 seconds. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...Until 3 PM PDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ540-312345- /O.CON.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 834 AM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 10 feet at 9 seconds. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
542 WHUS76 KMTR 312113 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 213 PM PDT Tue Aug 31 2021 PZZ530-010515- /O.CON.KMTR.SC.Y.0198.210831T2200Z-210901T0400Z/ /O.CAN.KMTR.SC.Y.0199.210901T1600Z-210901T2200Z/ /O.NEW.KMTR.SC.Y.0200.210901T2200Z-210902T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 213 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM TO 9 PM PDT WEDNESDAY... * WHAT...For the first Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 25 kt expected. For the second Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt expected. * WHAT..West winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...For the Small Craft Advisory, until 9 PM PDT this evening. For the Small Craft Advisory, from 3 PM to 9 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ571-010515- /O.EXT.KMTR.SC.Y.0197.000000T0000Z-210901T1600Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 213 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 9 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 9 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ575-010515- /O.EXT.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 213 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 10 to 20 kt with gusts up to 25 kt. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ570-010515- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210902T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 213 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 11 feet at 9 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ540-010515- /O.CON.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 213 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 9 seconds. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
122 WHUS76 KMTR 010348 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 848 PM PDT Tue Aug 31 2021 PZZ530-011200- /O.EXP.KMTR.SC.Y.0198.000000T0000Z-210901T0400Z/ /O.CON.KMTR.SC.Y.0200.210901T2200Z-210902T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 848 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM TO 9 PM PDT WEDNESDAY... ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 PM PDT THIS EVENING... * WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt expected. * WHAT..West winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 3 PM to 9 PM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ570-011200- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210902T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 848 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 11 feet at 13 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ571-011200- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T1600Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 848 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 13 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 9 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ575-011000- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 848 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 20 kt with gusts up to 25 kt. * WHERE...Waters from Pigeon Point to Point Pinos 10-60 NM. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ540-011000- /O.CON.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 848 PM PDT Tue Aug 31 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT WEDNESDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 13 seconds. * WHERE...Coastal Waters from Point Arena to Point Reyes California out to 10 nm. * WHEN...Until 3 AM PDT Wednesday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
913 WHUS76 KMTR 011004 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 304 AM PDT Wed Sep 1 2021 PZZ540-011115- /O.EXP.KMTR.SC.Y.0195.000000T0000Z-210901T1000Z/ Coastal Waters from Point Arena to Point Reyes California out to 10 nm- 304 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY HAS EXPIRED... Conditions have dropped below advisory criteria, therefore the Small Craft Advisory has been allowed to expire. $$ PZZ575-011115- /O.EXP.KMTR.SC.Y.0197.000000T0000Z-210901T1000Z/ Waters from Pigeon Point to Point Pinos 10-60 NM- 304 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY HAS EXPIRED... Conditions have dropped below advisory criteria, therefore the Small Craft Advisory has been allowed to expire. $$ PZZ570-011815- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210902T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 304 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 feet at 13 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ571-011600- /O.CON.KMTR.SC.Y.0197.000000T0000Z-210901T1600Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 304 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Northwest winds 15 to 20 kt with gusts up to 30 kt and seas 8 to 10 feet at 13 seconds. * WHERE...Waters from Point Reyes to Pigeon Point 10-60 NM. * WHEN...Until 9 AM PDT this morning. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ530-011815- /O.CON.KMTR.SC.Y.0200.210901T2200Z-210902T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 304 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... * WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt expected. * WHAT..West winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 3 PM this afternoon to 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
397 WHUS76 KMTR 011534 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 834 AM PDT Wed Sep 1 2021 PZZ571-011645- /O.EXP.KMTR.SC.Y.0197.000000T0000Z-210901T1600Z/ Waters from Point Reyes to Pigeon Point 10-60 NM- 834 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... WINDS AND WAVES HAVE FALLEN BELOW SMALL CRAFT CRITERIA. $$ PZZ570-012345- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210902T1000Z/ Waters from Point Arena to Point Reyes 10-60 NM- 834 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 9 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 3 AM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ530-012345- /O.CON.KMTR.SC.Y.0200.210901T2200Z-210902T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 834 AM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 9 PM PDT THIS EVENING... * WHAT..West winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...From 3 PM this afternoon to 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
973 WHUS76 KMTR 012109 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 209 PM PDT Wed Sep 1 2021 PZZ570-020515- /O.EXT.KMTR.SC.Y.0198.000000T0000Z-210903T0400Z/ Waters from Point Arena to Point Reyes 10-60 NM- 209 PM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PDT THURSDAY... * WHAT...Northwest winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 12 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 9 PM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ PZZ530-020400- /O.CON.KMTR.SC.Y.0200.210901T2200Z-210902T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 209 PM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...Southwest winds 10 to 20 kt with gusts up to 30 kt expected. * WHAT..West winds 10 to 20 kt with gusts up to 25 kt expected. * WHERE...San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
628 WHUS76 KMTR 020349 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 849 PM PDT Wed Sep 1 2021 PZZ530-020500- /O.EXP.KMTR.SC.Y.0200.000000T0000Z-210902T0400Z/ San Pablo Bay, Suisun Bay, the West Delta and the San Francisco Bay north of the Bay Bridge- 849 PM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 9 PM PDT THIS EVENING... The winds have diminished calling for the advisory to expire. $$ PZZ570-021200- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210903T0400Z/ Waters from Point Arena to Point Reyes 10-60 NM- 849 PM PDT Wed Sep 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THURSDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 8 to 10 feet at 12 seconds. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 9 PM PDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
643 WHUS76 KMTR 020917 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 217 AM PDT Thu Sep 2 2021 PZZ570-022030- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210903T0400Z/ Waters from Point Arena to Point Reyes 10-60 NM- 217 AM PDT Thu Sep 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North winds 15 to 20 kt with gusts up to 30 kt. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
169 WHUS76 KMTR 021501 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 801 AM PDT Thu Sep 2 2021 PZZ570-022315- /O.CON.KMTR.SC.Y.0198.000000T0000Z-210903T0400Z/ Waters from Point Arena to Point Reyes 10-60 NM- 801 AM PDT Thu Sep 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING... * WHAT...North to northwest winds 15 to 25 kt. * WHERE...Waters from Point Arena to Point Reyes 10-60 NM. * WHEN...Until 9 PM PDT this evening. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
422 WHUS76 KMTR 022132 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 232 PM PDT Thu Sep 2 2021 PZZ570-022245- /O.EXT.KMTR.SC.Y.0198.000000T0000Z-210902T2200Z/ Waters from Point Arena to Point Reyes 10-60 NM- 232 PM PDT Thu Sep 2 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 3 PM PDT THIS AFTERNOON... WINDS HAVE FALLEN BELOW SMALL CRAFT CRITERIA. && $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
691 WHUS76 KMTR 022157 MWWMTR URGENT - MARINE WEATHER MESSAGE National Weather Service San Francisco Bay Area 257 PM PDT Thu Sep 2 2021 PZZ570-022300- /O.EXP.KMTR.SC.Y.0198.000000T0000Z-210902T2200Z/ Waters from Point Arena to Point Reyes 10-60 NM- 257 PM PDT Thu Sep 2 2021 ...SMALL CRAFT ADVISORY WILL EXPIRE AT 3 PM PDT THIS AFTERNOON... WINDS HAVE FALLEN BELOW SMALL CRAFT CRITERIA. $$ For more information from the National Weather Service visit http://weather.gov/sanfrancisco
What forecasters said that day
The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this small craft advisory went out at Aug 30, 10:39 AM PDT, 3 hours 35 minutes earlier.
Area forecast discussion, Aug 30, 10:39 AM PDT, 3 hours 35 minutes before
Area Forecast Discussion
National Weather Service San Francisco Bay Area
1039 AM PDT Mon Aug 30 2021
.SYNOPSIS...Hazy conditions still possible today, but are expected
to clear out by this evening. Low pressure begins a cooling trend
today with increasing humidity for the region. Most locations
will see below average daytime highs by Wednesday as the cooling
trend persists through the work week.
&&
.DISCUSSION...as of 08:59 AM PDT Monday...Good Monday morning.
Marine stratus has taken hold over much of the coastal Bay Area
this morning. Patchy fog also being reported and observed along
the coast and in the coastal valleys. Satellite imagery shows
clouds covering SF and Monterey bays and much of the North Bay and
Salinas Valleys. Already, seeing steady erosion of clouds from
the interior extents towards the coast. Most clouds should burn
off mid to late morning, with lingering clouds possible along the
coast into early afternoon. As troughing deepens over the coast,
the trend will be towards cooler temps, higher RH's and a deeper
marine layer, at least through Thursday. This will provide much
needed relief for our interior valleys and elevated areas.
Seasonable temperatures forecast for today, though still above
normal in the interior. See previous discussion for more details.
No changes in the forecast needed at this time.
&&
.PREV DISCUSSION...as of 04:15 AM PDT Monday...Once again in these
overnight hours, we're seeing additional evidence of the cooling
and moistening trend take hold in our region. On nighttime
satellite imagery, we've got a lovely blanket of stratus that has
inundated much of the valley locations in Sonoma County. Low
clouds have covered much of San Francisco county and pushed
through the Golden Gate Bridge to spread across the northern San
Pablo Bay into the town of Napa while also spreading southward
into the San Francisco Bay along the eastern and southern
shorelines. Then farther south, we have the typical stratus
coverage filling all of Monterey Bay waters and the surrounding
shoreline then spilling southward into much of the Salinas Valley.
Folks in those areas will likely see patchy fog and/or some
drizzle due to the low stratus. The Fort Ord Profiler is showing
the marine layer continuing to hover between 1200-1400 ft deep.
The SFO-SAC onshore gradient continues to strengthen as it's up to
2.6 mb compared to 1.9 mb this time yesterday. Coastal areas will
be cool today in the 60s to 70s while inland areas will be in the
80s to 90s. However, hottest locations will be in the higher
elevations on the fringe of our CWA (Pinnacles NP, Parkfield, far
East Bay, and far NE Napa county) where we could still see some
triple digit heat, but at least it should be a bit cooler than
yesterday.
The upper level low in western Canada is troughing into NorCal and
that trough will deepen notably by midweek. 500 mb heights will
gradually lower to around 585 dam today then continue to lower
between 579-583 dam on Wednesday. This is when daytime highs will
likely be at their coolest and range 5 to 15 degrees below normal.
That will put coastal areas in the 50s and 60s with a few low 70s
while inland areas are in the 70s to 80s.
Some uncertainty this weekend as the GFS implies high pressure
over the desert SW could nudge towards CA and gently start to warm
our temperatures. However, the ECMWF indicates another troughing
pattern over CA. Regardless, not seeing a pattern that would
indicate a sharp swing of temperatures either way at this point.
&&
.AVIATION...as of 10:39 AM PDT Monday...For the 18z TAFs.
Satellite imagery shows low clouds along the coast from Sonoma
southward through Monterey County and around the SF Bay. Low
clouds are dissipating this morning with VFR conditions expected
over the next hour. Gusty northwest winds over the waters has
eroded much of the stratus over the coastal waters. Thus,
expecting a bit of a delayed return of low clouds this evening
north of the Monterey Bay with patchier stratus inland than what
happened last night. MVFR/IFR conditions for most coastal sites
tonight into mid tomorrow morning. Greatest uncertainty around the
SF/North Bay Areas regarding timing and coverage of stratus
tonight. Breezy onshore winds this afternoon 10-15 kt with locally
higher gusts.
Latest HRRR smoke model shows improving conditions both aloft and
near the surface later today and through tomorrow evening. Some
slant range vis issues possible into this evening with a little
reduction in surface vis still in the North/East Bay.
Vicinity of KSFO...VFR conditions through late tonight with breezy
onshore winds this afternoon at 15-20 kt. Low confidence in
regards to stratus overnight, but there is some chance of MVFR/IFR
cigs late tonight into mid tomorrow morning.
KSFO Bridge Approach...Similar to KSFO.
Monterey Bay...The marine layer remains at about 1,200 ft AGL with
stratus over the Monterey Bay and down the Big Sur Coast. Low
clouds slowly retreating back towards the bay with VFR conditions
expected over the next hour. Stratus forecast to return again this
evening at around 03z-05z with IFR/LIFR conditions through mid to
late Tuesday morning. Onshore winds this afternoon 10-15 kt.
&&
.MARINE...as of 08:33 AM PDT Monday...Gusty northwest winds will
continue today and tonight over the northern and outer waters.
Gale force gusts are expected over the northern outer waters
through late tonight. These strong winds will generate steep waves
resulting in hazardous seas conditions, particularly for smaller
vessels. Winds will ease somewhat into tomorrow but remain breezy
for the northern waters into mid-week. Sea state remains dominated
by steep short period northwest waves at periods of 8 to 10
seconds along with a weak moderate period southerly swell.
&&
.MTR WATCHES/WARNINGS/ADVISORIES...
.Tday...GLW...Pt Arena to Pigeon Pt 10-60 nm
SCA...Pt Arena to Pt Reyes 0-10 nm
SCA...Pt Reyes to Pigeon Pt 0-10 nm from 3 PM
SCA...Pigeon Pt to Pt Piedras Blancas 10-60 nm from 3 PM
&&
PUBLIC FORECAST: Lorber/Bingaman
AVIATION: AS
MARINE: AS
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Small Craft Advisories in California, 2021Every small craft advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.