Surf Forecasts and Marine Weather - No Hype - Just the Facts!
And Here We Go - A Massive El Nino Is Developing! - Video HERE (7/12/26)
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: 18Z Sat 18JUL2026
Day Frcst Time/Date Speed (kts) Gust (kts) Dir (degs) MidSpd (kts) Gust (kts) Dir (degs)
Sat 10AM 18JUL26 5.0 7.9 292 7.4 11.2 280
Sat 01PM 18JUL26 3.6 5.6 254 4.5 6.8 253
Sat 04PM 18JUL26 4.1 6.5 229 4.8 7.2 250
Sat 07PM 18JUL26 5.9 9.2 138 4.3 6.5 169
Sat 10PM 18JUL26 9.7 15.2 152 5.7 8.6 203
Sun 01AM 19JUL26 8.4 13.1 161 6.8 10.2 215
Sun 04AM 19JUL26 8.9 13.9 165 8.8 13.2 226
Sun 07AM 19JUL26 7.1 11.1 168 9.4 14.0 240
Sun 10AM 19JUL26 6.1 9.6 134 5.9 8.8 238
Sun 01PM 19JUL26 5.6 9.7 138 7.2 10.8 179
Sun 04PM 19JUL26 6.4 10.0 174 6.6 9.9 223
Sun 07PM 19JUL26 10.9 17.1 154 6.1 9.2 213
Sun 10PM 19JUL26 10.2 15.9 162 8.4 12.6 222
Mon 01AM 20JUL26 12.3 19.2 161 9.3 13.9 226
Mon 04AM 20JUL26 7.3 11.3 165 7.3 10.9 220
Mon 07AM 20JUL26 3.8 5.9 179 6.8 10.2 232
Mon 10AM 20JUL26 3.8 6.0 301 5.7 8.5 215
Mon 01PM 20JUL26 3.5 5.4 289 3.7 5.5 248
Mon 04PM 20JUL26 7.5 11.7 187 8.4 12.5 228
Mon 07PM 20JUL26 1.4 2.2 287 3.2 4.9 281
Mon 10PM 20JUL26 4.0 6.3 248 5.6 8.5 268
Tue 01AM 21JUL26 4.6 7.2 175 4.4 6.6 241
Tue 04AM 21JUL26 3.3 5.1 221 4.9 7.3 240
Tue 07AM 21JUL26 4.0 6.2 270 5.5 8.3 239
Tue 10AM 21JUL26 2.7 4.2 331 4.1 6.1 305
Tue 01PM 21JUL26 4.4 13.4 239 6.5 9.8 205
Tue 04PM 21JUL26 7.8 12.2 271 4.0 5.9 248
Tue 07PM 21JUL26 3.9 6.0 192 3.0 4.5 118
Tue 10PM 21JUL26 4.7 7.3 189 3.8 5.8 116
Wed 01AM 22JUL26 2.8 4.3 158 2.9 4.3 125
Wed 04AM 22JUL26 3.5 5.5 152 2.5 3.7 177
Wed 07AM 22JUL26 5.2 8.2 247 6.0 9.0 242
Wed 10AM 22JUL26 6.1 9.6 274 6.4 9.6 270
Wed 01PM 22JUL26 8.3 12.9 258 7.8 11.7 272
Wed 04PM 22JUL26 11.1 17.4 227 10.0 15.0 237
Wed 07PM 22JUL26 7.2 11.2 171 10.3 15.4 246
Wed 10PM 22JUL26 9.1 14.2 165 8.8 13.2 229
Thu 01AM 23JUL26 8.3 13.0 169 9.9 14.9 226
Thu 04AM 23JUL26 7.3 11.3 192 11.4 17.0 233
Thu 07AM 23JUL26 8.7 13.5 234 15.1 22.7 248
Thu 10AM 23JUL26 9.8 15.2 236 13.6 20.3 244
Thu 01PM 23JUL26 13.9 21.6 215 16.9 25.4 233
Thu 04PM 23JUL26 13.8 21.5 209 18.6 27.9 240
Thu 07PM 23JUL26 12.6 19.6 167 12.9 19.3 233
Thu 10PM 23JUL26 7.2 11.2 186 10.2 15.3 231
Fri 01AM 24JUL26 8.1 12.6 193 12.1 18.2 245
Fri 04AM 24JUL26 9.4 14.6 189 15.1 22.7 254
Fri 07AM 24JUL26 8.7 13.5 204 16.5 24.8 258
Fri 10AM 24JUL26 11.7 18.3 233 15.4 23.1 241
Fri 01PM 24JUL26 13.5 21.1 212 16.5 24.7 229
Fri 04PM 24JUL26 13.4 20.8 210 16.1 24.2 230
Fri 07PM 24JUL26 10.1 15.8 164 9.4 14.1 242
Fri 10PM 24JUL26 11.2 17.4 160 9.1 13.7 227
Sat 01AM 25JUL26 9.6 15.0 170 10.9 16.4 244
Sat 04AM 25JUL26 7.4 11.6 175 9.7 14.5 249
Sat 07AM 25JUL26 6.6 10.3 178 9.6 14.4 250
Sat 10AM 25JUL26 6.6 10.4 256 9.1 13.7 251
Sat 01PM 25JUL26 11.2 17.5 215 12.8 19.3 224
Sat 04PM 25JUL26 12.8 19.9 216 14.3 21.5 226
Sat 07PM 25JUL26 7.7 11.9 209 13.2 19.7 251
Sat 10PM 25JUL26 6.6 10.2 205 10.7 16.1 250
Sun 01AM 26JUL26 6.2 9.6 179 7.7 11.6 244
Sun 04AM 26JUL26 5.3 8.3 221 7.7 11.6 246
Sun 07AM 26JUL26 5.5 8.6 243 7.9 11.9 251
Sun 10AM 26JUL26 5.1 7.9 273 5.8 8.7 263
Sun 01PM 26JUL26 5.9 9.2 232 5.5 8.3 220
Sun 04PM 26JUL26 11.9 18.5 197 11.6 17.3 187
Sun 07PM 26JUL26 9.1 14.1 147 4.9 7.4 199
Sun 10PM 26JUL26 9.6 15.0 160 6.9 10.3 221
Mon 01AM 27JUL26 6.3 9.8 172 7.4 11.1 226
Mon 04AM 27JUL26 6.9 10.7 240 10.4 15.6 246
Mon 07AM 27JUL26 8.2 12.7 260 12.0 18.0 259
Mon 10AM 27JUL26 7.5 11.7 277 9.3 14.0 266
Mon 01PM 27JUL26 10.1 15.7 217 10.6 16.0 219
Mon 04PM 27JUL26 10.6 16.5 216 9.5 14.2 218
Mon 07PM 27JUL26 9.1 14.2 140 4.3 6.5 183
Mon 10PM 27JUL26 8.6 13.5 156 5.1 7.6 221
Tue 01AM 28JUL26 5.4 8.5 167 5.1 7.6 208
Tue 04AM 28JUL26 6.4 10.0 193 9.7 14.6 233
Tue 07AM 28JUL26 6.5 10.2 231 11.4 17.2 251
Tue 10AM 28JUL26 7.4 11.6 270 9.3 14.0 265

.
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