Active MJO Pushes East - What Effect Will Coming Inactive Phase Have? - Video Forecast HERE (12/7/25)

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Stormsurf Mobile App Create Your Own Surf Forecast Swell Calculator Swell Decay Tables Sea Height Tables Swell Category Table Convert from GMT:   0Z 1Z 2Z 3Z 4Z 5Z 6Z 7Z 8Z 9Z 10Z 11Z 12Z 13Z 14Z 15Z 16Z 17Z 18Z 19Z 20Z 21Z 22Z 23Z  to timezone: IDLE/NZST AEDT GST/AEST --> JST/AWDT CCT/AWST WAST/CXT --> MSD BT/MSK EET/CEST CET/SWT GMT/UTC WAT AT ADT AST/EDT EST/CDT CST/MDT MST/PDT PST/YDT YST/HADT AHST/HAST NT IDLW 7:00 ---

QuikCAST Surf Forecast - North California 5 Day Surf Forecast Forecast Updated:   Tuesday, December 9, 2025 1:01 PM Surf Scale: 3 ft = waist high, 4 ft = chest high, 5 ft = head high, 10 ft =double overhead Swell Direction is direction swell is coming from. 90°=East, 180°=South, 270°=West, 360-0 = North North California Surf Forecast (Centered on San Francisco) Day Trend Wind (kts) Details (Swell Number, Swell Size & Period, Arrival Time and Profile) Waves (Set wave max face height) Swell Direction Wednesday 12/10 Up some NE 5+ early Background Gulf swell building to 5.0 ft @ 13 secs later 6.5 ft 305 degrees Thursday 12/11 Up some NE 1-5 early New Dateline swell building to 4.8 ft @ 14 secs mid-day 6.5 ft 296 degrees Friday 12/12 Up some NE 10 early Dateline swell fading from 5.1 ft @ 14 secs early 7.0 ft 296 degrees Saturday 12/13 Down some NE 5+ early Dateline swell fading from 2.8 ft @ 12 secs early 3.0 ft 296 degrees Sunday 12/14 Down more NE 5+ early Background swell fading from 2.1 ft @ 11-12 secs early 2.0 ft 285 degrees Extended Outlook Down --- A small gale developed while tracking east from the dateline to the Gulf Sat-Tues (12/9) producing 26-27 ft seas aimed east. Swell arrival possibly on Thurs (12/11). Nothing else meaningful to follow with the Inactive Phase of the MJO in control. A small gale is to develop just west of the dateline Thurs (12/11) with 31 ft seas aimed east. Another tiny gale is to develop off the Kuril on Mon (12/15) with 37 ft sea aimed east. no meaningful swell is to result. --- --- Surf Height Animation: Northeast Pacific - North CA - Central CA Wind Animations: US West Coast - North CA - Central CA Local Model: Surf - Wind 4586

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