Is Atmospheric Momentum The Key? - Video Forecast HERE (9/7/25)

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Donner_Summit_I80 - Wind Forecast Location: 39.34N 120.34W Base Elevation: 7259 ft Peak Elevation: 7259 ft   240 hour GFS Model (0.25 deg) - 3 hr incrememts   Data Initialized: 18Z Tue 16SEP2025 Day Frcst Time/Date Speed (kts) Gust (kts) Dir (degs) MidSpd (kts) Gust (kts) Dir (degs) Tue 11AM 16SEP25 4.1 6.2 249 - - - Tue 02PM 16SEP25 4.2 6.3 299 - - - Tue 05PM 16SEP25 2.6 3.9 329 - - - Tue 08PM 16SEP25 2.7 4.0 53 - - - Tue 11PM 16SEP25 2.4 3.6 53 - - - Wed 02AM 17SEP25 4.0 5.9 21 - - - Wed 05AM 17SEP25 1.5 2.2 96 - - - Wed 08AM 17SEP25 1.5 2.3 60 - - - Wed 11AM 17SEP25 3.7 5.6 320 - - - Wed 02PM 17SEP25 5.0 7.4 335 - - - Wed 05PM 17SEP25 8.9 13.4 356 - - - Wed 08PM 17SEP25 3.6 5.4 10 - - - Wed 11PM 17SEP25 5.0 7.5 20 - - - Thu 02AM 18SEP25 6.9 10.4 17 - - - Thu 05AM 18SEP25 7.5 11.2 14 - - - Thu 08AM 18SEP25 8.4 12.7 13 - - - Thu 11AM 18SEP25 10.0 15.0 349 - - - Thu 02PM 18SEP25 5.3 8.0 331 - - - Thu 05PM 18SEP25 4.0 6.0 311 - - - Thu 08PM 18SEP25 3.8 5.8 338 - - - Thu 11PM 18SEP25 9.7 14.5 3 - - - Fri 02AM 19SEP25 25.5 38.3 6 - - - Fri 05AM 19SEP25 16.3 24.4 348 - - - Fri 08AM 19SEP25 8.9 13.3 350 - - - Fri 11AM 19SEP25 14.4 21.6 10 - - - Fri 02PM 19SEP25 7.6 11.4 344 - - - Fri 05PM 19SEP25 6.5 9.7 326 - - - Fri 08PM 19SEP25 5.2 7.9 26 - - - Fri 11PM 19SEP25 4.7 7.0 16 - - - Sat 02AM 20SEP25 6.0 9.0 10 - - - Sat 05AM 20SEP25 4.3 6.5 8 - - - Sat 08AM 20SEP25 1.4 2.1 26 - - - Sat 11AM 20SEP25 2.4 3.6 265 - - - Sat 02PM 20SEP25 3.0 4.6 251 - - - Sat 05PM 20SEP25 2.1 3.2 231 - - - Sat 08PM 20SEP25 1.1 1.7 73 - - - Sat 11PM 20SEP25 1.9 2.9 114 - - - Sun 02AM 21SEP25 4.0 6.0 159 - - - Sun 05AM 21SEP25 5.6 8.4 167 - - - Sun 08AM 21SEP25 5.5 8.3 167 - - - Sun 11AM 21SEP25 4.8 7.2 200 - - - Sun 02PM 21SEP25 4.4 6.7 208 - - - Sun 05PM 21SEP25 4.1 6.1 190 - - - Sun 08PM 21SEP25 2.4 3.5 136 - - - Sun 11PM 21SEP25 2.1 3.2 39 - - - Mon 02AM 22SEP25 2.4 3.5 95 - - - Mon 05AM 22SEP25 3.4 5.1 159 - - - Mon 08AM 22SEP25 4.2 6.4 164 - - - Mon 11AM 22SEP25 2.8 4.2 269 - - - Mon 02PM 22SEP25 5.1 7.7 316 - - - Mon 05PM 22SEP25 7.8 11.8 337 - - - Mon 08PM 22SEP25 6.9 10.3 8 - - - Mon 11PM 22SEP25 2.2 3.2 154 - - - Tue 02AM 23SEP25 2.0 3.1 157 - - - Tue 05AM 23SEP25 5.3 7.9 184 - - - Tue 08AM 23SEP25 6.4 9.6 323 - - - Tue 11AM 23SEP25 9.1 13.7 197 - - - Tue 02PM 23SEP25 22.4 33.6 205 - - - Tue 05PM 23SEP25 27.9 41.9 193 - - - Tue 08PM 23SEP25 28.7 43.1 191 - - - Tue 11PM 23SEP25 29.7 44.5 192 - - - Wed 02AM 24SEP25 26.7 40.0 183 - - - Wed 05AM 24SEP25 25.2 37.8 178 - - - Wed 08AM 24SEP25 22.4 33.6 175 - - - Wed 11AM 24SEP25 16.9 25.4 197 - - - Wed 02PM 24SEP25 15.1 22.6 197 - - - Wed 05PM 24SEP25 15.1 22.6 192 - - - Wed 08PM 24SEP25 17.1 25.7 177 - - - Wed 11PM 24SEP25 18.5 27.8 179 - - - Thu 02AM 25SEP25 22.8 34.2 179 - - - Thu 05AM 25SEP25 25.5 38.2 180 - - - Thu 08AM 25SEP25 28.5 42.7 180 - - - Thu 11AM 25SEP25 27.0 40.5 193 - - - Thu 02PM 25SEP25 28.8 43.2 194 - - - Thu 05PM 25SEP25 30.3 45.4 192 - - - Thu 08PM 25SEP25 28.7 43.0 183 - - - Thu 11PM 25SEP25 30.4 45.6 181 - - - Fri 02AM 26SEP25 33.0 49.4 182 - - - Fri 05AM 26SEP25 31.7 47.6 184 - - - Fri 08AM 26SEP25 27.2 40.8 187 - - - Fri 11AM 26SEP25 20.9 31.4 189 - - -

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