Surf Forecasts and Marine Weather - No Hype - Just the Facts!
How Warm Will the NINO3.4 Region Get....Exactly? - Video HERE (8/16/26)
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: 06Z Mon 17AUG2026
Day Frcst Time/Date Speed (kts) Gust (kts) Dir (degs) MidSpd (kts) Gust (kts) Dir (degs)
Sun 10PM 16AUG26 7.8 12.1 172 9.3 14.0 225
Mon 01AM 17AUG26 6.4 10.0 221 9.8 14.7 243
Mon 04AM 17AUG26 8.1 12.7 198 13.7 20.6 251
Mon 07AM 17AUG26 7.6 11.9 174 13.1 19.6 235
Mon 10AM 17AUG26 5.0 8.4 297 7.7 11.5 282
Mon 01PM 17AUG26 10.8 16.8 216 12.3 18.4 237
Mon 04PM 17AUG26 9.6 14.9 181 11.5 17.3 241
Mon 07PM 17AUG26 8.2 12.8 165 8.4 12.6 223
Mon 10PM 17AUG26 8.5 13.2 170 10.1 15.1 226
Tue 01AM 18AUG26 5.1 8.0 201 7.9 11.9 227
Tue 04AM 18AUG26 6.9 10.8 216 12.1 18.2 237
Tue 07AM 18AUG26 8.7 13.6 254 13.4 20.1 254
Tue 10AM 18AUG26 10.7 16.7 271 12.8 19.2 269
Tue 01PM 18AUG26 8.4 13.2 226 8.7 13.0 237
Tue 04PM 18AUG26 5.9 9.2 202 5.9 8.9 205
Tue 07PM 18AUG26 5.9 9.2 130 7.3 10.9 129
Tue 10PM 18AUG26 6.2 9.6 160 4.6 6.9 209
Wed 01AM 19AUG26 6.0 9.4 215 10.0 15.0 238
Wed 04AM 19AUG26 5.8 9.0 232 9.1 13.6 247
Wed 07AM 19AUG26 5.5 8.6 247 8.4 12.6 254
Wed 10AM 19AUG26 4.6 7.2 286 6.4 9.5 271
Wed 01PM 19AUG26 4.9 7.6 239 5.1 7.6 227
Wed 04PM 19AUG26 7.5 11.7 199 7.1 10.6 186
Wed 07PM 19AUG26 6.3 9.9 126 5.5 8.3 144
Wed 10PM 19AUG26 6.1 9.6 153 3.8 5.7 200
Thu 01AM 20AUG26 7.8 12.2 173 9.3 13.9 230
Thu 04AM 20AUG26 6.4 10.1 187 9.2 13.8 239
Thu 07AM 20AUG26 5.4 8.4 201 8.6 13.0 247
Thu 10AM 20AUG26 4.5 7.1 268 7.6 11.4 265
Thu 01PM 20AUG26 8.7 13.6 217 9.1 13.7 230
Thu 04PM 20AUG26 8.5 13.3 188 8.5 12.8 200
Thu 07PM 20AUG26 8.7 13.6 139 4.3 6.5 180
Thu 10PM 20AUG26 9.9 15.5 150 5.0 7.5 202
Fri 01AM 21AUG26 9.6 15.0 160 7.2 10.8 218
Fri 04AM 21AUG26 7.8 12.2 173 8.7 13.1 234
Fri 07AM 21AUG26 6.4 10.0 175 8.6 12.9 240
Fri 10AM 21AUG26 7.3 11.5 228 11.5 17.3 245
Fri 01PM 21AUG26 14.4 22.4 205 17.5 26.2 230
Fri 04PM 21AUG26 13.7 21.3 213 16.8 25.2 234
Fri 07PM 21AUG26 11.6 18.2 164 11.4 17.1 240
Fri 10PM 21AUG26 9.0 14.0 166 9.2 13.8 242
Sat 01AM 22AUG26 10.1 15.7 167 10.5 15.7 242
Sat 04AM 22AUG26 7.5 11.7 170 8.7 13.1 246
Sat 07AM 22AUG26 6.0 9.3 204 10.7 16.1 256
Sat 10AM 22AUG26 10.0 15.5 233 12.3 18.4 240
Sat 01PM 22AUG26 13.1 20.5 218 15.1 22.6 229
Sat 04PM 22AUG26 11.6 18.1 210 13.3 19.9 229
Sat 07PM 22AUG26 8.5 13.3 169 9.6 14.4 243
Sat 10PM 22AUG26 8.9 13.9 160 6.3 9.5 221
Sun 01AM 23AUG26 8.5 13.3 168 8.9 13.3 229
Sun 04AM 23AUG26 7.0 10.9 176 8.8 13.2 241
Sun 07AM 23AUG26 6.3 9.9 182 9.7 14.6 244
Sun 10AM 23AUG26 4.7 8.4 285 7.2 10.8 274
Sun 01PM 23AUG26 8.1 12.6 234 9.7 14.5 230
Sun 04PM 23AUG26 11.4 17.8 205 13.4 20.2 212
Sun 07PM 23AUG26 5.4 8.4 150 3.7 5.6 202
Sun 10PM 23AUG26 5.7 8.9 186 7.1 10.7 239
Mon 01AM 24AUG26 5.6 8.7 187 7.5 11.3 236
Mon 04AM 24AUG26 5.8 9.0 176 7.0 10.5 232
Mon 07AM 24AUG26 6.1 9.5 165 7.3 10.9 231
Mon 10AM 24AUG26 5.0 9.2 322 7.0 10.5 216
Mon 01PM 24AUG26 11.3 17.6 271 10.3 15.4 266
Mon 04PM 24AUG26 11.8 18.4 211 15.1 22.6 230
Mon 07PM 24AUG26 9.0 14.0 195 14.5 21.8 255
Mon 10PM 24AUG26 9.6 15.0 182 15.9 23.8 259
Tue 01AM 25AUG26 9.4 14.6 178 14.7 22.0 251
Tue 04AM 25AUG26 9.1 14.3 203 16.2 24.3 252
Tue 07AM 25AUG26 10.3 16.1 240 18.5 27.8 259
Tue 10AM 25AUG26 9.1 14.3 234 13.5 20.2 245
Tue 01PM 25AUG26 14.6 22.8 209 18.5 27.7 231
Tue 04PM 25AUG26 14.4 22.4 209 18.8 28.2 234
Tue 07PM 25AUG26 10.8 16.9 185 16.3 24.4 250
Tue 10PM 25AUG26 8.4 13.1 183 11.7 17.6 246
Wed 01AM 26AUG26 8.9 13.8 179 12.2 18.4 241
Wed 04AM 26AUG26 7.4 11.6 191 11.2 16.9 249
Wed 07AM 26AUG26 6.7 10.4 209 11.6 17.4 253
Wed 10AM 26AUG26 8.0 12.5 237 11.4 17.1 245
Wed 01PM 26AUG26 14.2 22.1 215 16.6 24.9 227
Wed 04PM 26AUG26 13.4 20.9 205 17.1 25.6 236
Wed 07PM 26AUG26 11.4 17.7 171 14.2 21.3 250
Wed 10PM 26AUG26 9.0 14.0 177 11.6 17.4 246

.
Contact | About | Disclaimer | Privacy
Advertise/Content | Links
Visit Mark Sponsler on Facebook Visit Stormsurf on Instagram Visit Stormsurf on YouTube
Copyright © 2026 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