Surf Forecasts and Marine Weather - No Hype - Just the Facts!
La Nina Is In the Ocean - But Will It Build Into the Atmopshere? - Video Forecast HERE (9/21/25)
Buoys | Buoy Forecast | Bulletins | Models: Wave - Weather - Surf - Altimetry - Snow | Pacific Forecast | QuikCAST | El Nino | Tutorials | Great Circles | Video

Google
Create Your Own Surf Forecast
Swell Calculator
Swell Decay Tables
Sea Height Tables
Swell Category Table
.

Mammoth - Wind Forecast
Location: 37.64N 119.02W
Base Elevation: 7953 ft
Peak Elevation: 11053 ft

 

240 hour GFS Model (0.25 deg) - 3 hr incrememts

 

Data

Initialized: 12Z Mon 22SEP2025
Day Frcst Time/Date Speed (kts) Gust (kts) Dir (degs) MidSpd (kts) Gust (kts) Dir (degs)
Mon 05AM 22SEP25 5.3 7.9 68 5.5 8.2 48
Mon 08AM 22SEP25 7.4 11.1 35 7.4 11.1 30
Mon 11AM 22SEP25 9.1 13.7 4 8.8 13.2 7
Mon 02PM 22SEP25 9.9 14.9 344 10.2 15.3 349
Mon 05PM 22SEP25 13.1 19.6 347 12.5 18.8 350
Mon 08PM 22SEP25 17.5 26.2 9 13.4 20.1 13
Mon 11PM 22SEP25 15.8 23.7 28 9.9 14.8 40
Tue 02AM 23SEP25 12.6 18.9 34 8.3 12.4 53
Tue 05AM 23SEP25 10.6 15.8 41 7.0 10.5 63
Tue 08AM 23SEP25 10.5 15.8 46 7.4 11.1 83
Tue 11AM 23SEP25 8.7 13.1 39 6.3 9.4 84
Tue 02PM 23SEP25 4.8 7.2 353 4.6 7.0 356
Tue 05PM 23SEP25 7.9 11.8 342 8.3 12.5 348
Tue 08PM 23SEP25 11.5 17.3 39 7.3 11.0 72
Tue 11PM 23SEP25 11.3 17.0 57 10.2 15.3 105
Wed 02AM 24SEP25 10.6 15.9 59 10.0 15.1 105
Wed 05AM 24SEP25 8.7 13.1 68 9.2 13.8 111
Wed 08AM 24SEP25 9.9 14.8 61 9.9 14.8 106
Wed 11AM 24SEP25 7.5 11.3 43 6.6 9.8 97
Wed 02PM 24SEP25 7.5 11.3 320 6.3 9.4 323
Wed 05PM 24SEP25 6.9 10.4 310 6.0 9.0 314
Wed 08PM 24SEP25 9.5 14.2 49 8.0 12.0 110
Wed 11PM 24SEP25 6.9 10.3 61 7.2 10.8 111
Thu 02AM 25SEP25 7.5 11.2 67 7.7 11.6 112
Thu 05AM 25SEP25 5.9 8.9 42 4.0 6.1 59
Thu 08AM 25SEP25 6.1 9.1 32 3.8 5.7 54
Thu 11AM 25SEP25 7.9 11.8 321 5.4 8.1 294
Thu 02PM 25SEP25 5.5 8.3 245 6.5 9.8 139
Thu 05PM 25SEP25 11.2 16.8 58 6.6 10.0 125
Thu 08PM 25SEP25 18.8 28.2 9 16.1 24.1 11
Thu 11PM 25SEP25 19.7 29.6 16 13.9 20.8 18
Fri 02AM 26SEP25 20.7 31.1 22 12.9 19.3 31
Fri 05AM 26SEP25 18.6 27.9 18 14.5 21.7 20
Fri 08AM 26SEP25 21.4 32.0 16 15.5 23.3 19
Fri 11AM 26SEP25 15.7 23.5 25 10.5 15.8 46
Fri 02PM 26SEP25 10.5 15.8 22 8.2 12.3 42
Fri 05PM 26SEP25 12.1 18.1 266 10.3 15.4 154
Fri 08PM 26SEP25 17.5 26.3 12 12.4 18.6 15
Fri 11PM 26SEP25 19.6 29.4 36 12.0 17.9 72
Sat 02AM 27SEP25 21.5 32.3 44 14.1 21.1 92
Sat 05AM 27SEP25 15.2 22.8 49 11.6 17.4 99
Sat 08AM 27SEP25 13.0 19.5 47 9.7 14.6 95
Sat 11AM 27SEP25 7.7 11.5 22 5.0 7.5 47
Sat 02PM 27SEP25 5.2 7.9 324 4.9 7.3 133
Sat 05PM 27SEP25 11.8 17.7 347 11.0 16.5 344
Sat 08PM 27SEP25 10.0 15.0 94 9.6 14.4 5
Sat 11PM 27SEP25 9.9 14.9 14 9.0 13.5 12
Sun 02AM 28SEP25 8.3 12.5 19 6.2 9.3 21
Sun 05AM 28SEP25 6.8 10.1 34 4.8 7.1 51
Sun 08AM 28SEP25 6.4 9.5 34 5.4 8.1 33
Sun 11AM 28SEP25 9.1 13.6 349 6.6 9.9 349
Sun 02PM 28SEP25 7.4 11.1 328 8.4 12.6 334
Sun 05PM 28SEP25 11.5 17.3 345 11.8 17.8 344
Sun 08PM 28SEP25 12.6 18.9 6 13.0 19.4 6
Sun 11PM 28SEP25 17.6 26.4 12 13.5 20.2 11
Mon 02AM 29SEP25 18.3 27.4 12 14.8 22.2 10
Mon 05AM 29SEP25 19.9 29.9 13 17.0 25.6 11
Mon 08AM 29SEP25 20.6 30.9 11 17.4 26.0 10
Mon 11AM 29SEP25 17.2 25.9 13 14.5 21.7 19
Mon 02PM 29SEP25 12.0 18.1 9 10.4 15.7 16
Mon 05PM 29SEP25 12.3 18.5 263 11.3 17.0 147
Mon 08PM 29SEP25 16.9 25.3 11 12.9 19.3 12
Mon 11PM 29SEP25 16.9 25.4 12 12.0 18.0 14
Tue 02AM 30SEP25 8.8 13.3 24 6.0 9.0 36
Tue 05AM 30SEP25 6.0 9.0 28 4.7 7.1 31
Tue 08AM 30SEP25 5.5 8.3 24 4.3 6.4 29
Tue 11AM 30SEP25 6.3 9.4 332 5.3 8.0 334
Tue 02PM 30SEP25 9.4 14.1 311 9.9 14.8 318
Tue 05PM 30SEP25 10.7 16.1 337 11.1 16.7 341
Tue 08PM 30SEP25 10.2 15.3 95 9.2 13.8 4
Tue 11PM 30SEP25 8.9 13.3 20 6.9 10.3 22
Wed 02AM 01OCT25 7.4 11.1 36 4.8 7.2 63
Wed 05AM 01OCT25 4.3 6.4 63 3.8 5.7 98
Wed 08AM 01OCT25 3.2 4.9 64 3.1 4.6 99
Wed 11AM 01OCT25 4.6 6.9 292 3.8 5.8 261
Wed 02PM 01OCT25 6.7 10.0 303 6.2 9.2 307
Wed 05PM 01OCT25 7.1 10.6 326 6.6 9.9 319
Wed 08PM 01OCT25 6.2 9.2 57 4.3 6.4 110
Wed 11PM 01OCT25 5.8 8.6 64 5.4 8.1 109
Thu 02AM 02OCT25 4.4 6.6 83 5.5 8.2 122
Thu 05AM 02OCT25 4.8 7.2 141 6.0 9.1 154

.
Contact | About | Disclaimer | Privacy
Advertise/Content | Links
Visit Mark Sponsler on Facebook Visit Stormsurf on Instagram Visit Stormsurf on YouTube
Copyright © 2025 STORMSURF - All Rights Reserved
This page cannot be duplicated, reused or framed in another window without express written permission.
But links are always welcome.
Buoys | Buoy Forecast | Bulletins | Models: Wave - Weather - Surf - Altimetry - Snow | Pacific Forecast | QuikCAST | El Nino | Tutorials | Great Circles | Calculator