Surf Forecasts and Marine Weather - No Hype - Just the Facts!
PDO Rises, Warm Water Pushes East, But... - Video Forecast HERE (12/14/25)
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
.

Big_Sky - Snow Level Forecast
Location: 45.28N 111.45W
Base Elevation: 6800 ft
Peak Elevation: 11166 ft

 

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

 

Data

Initialized: 12Z Sat 20DEC2025
Day Frcst Time/Date 34.6 Deg Elev 32 Deg Elev 28 Deg Elev Srf Temp (F) Accum Snow (In)
Sat 05AM 20DEC25 848 1608 2776 10.5 -
Sat 08AM 20DEC25 1022 1781 2952 11.0 0.0
Sat 11AM 20DEC25 3607 3976 5317 22.8 0.0
Sat 02PM 20DEC25 3850 4993 5557 24.3 0.0
Sat 05PM 20DEC25 2031 2785 3588 14.6 0.0
Sat 08PM 20DEC25 1852 2603 3499 14.2 0.0
Sat 11PM 20DEC25 1789 2546 3469 14.4 0.0
Sun 02AM 21DEC25 1942 2698 3544 14.9 0.0
Sun 05AM 21DEC25 3296 3664 5008 19.6 0.0
Sun 08AM 21DEC25 3849 4992 5557 23.4 0.0
Sun 11AM 21DEC25 5242 6424 7031 27.8 0.4
Sun 02PM 21DEC25 6639 6969 8517 31.9 0.0
Sun 05PM 21DEC25 6848 7225 8891 32.7 0.0
Sun 08PM 21DEC25 7095 8356 9908 34.4 0.0
Sun 11PM 21DEC25 7095 8353 9892 34.5 1.0
Mon 02AM 22DEC25 6978 8258 8960 33.7 2.9
Mon 05AM 22DEC25 6959 8179 8744 33.8 4.2
Mon 08AM 22DEC25 6905 8118 8549 33.2 0.0
Mon 11AM 22DEC25 6548 6875 8239 32.1 4.9
Mon 02PM 22DEC25 6678 6984 8281 33.2 5.3
Mon 05PM 22DEC25 3810 4953 5516 22.6 0.0
Mon 08PM 22DEC25 4887 5250 6655 25.7 0.0
Mon 11PM 22DEC25 3841 4984 5548 23.5 0.0
Tue 02AM 23DEC25 5544 6764 8224 30.0 0.0
Tue 05AM 23DEC25 6586 6975 8414 31.7 0.0
Tue 08AM 23DEC25 6531 6905 8381 31.4 6.6
Tue 11AM 23DEC25 6897 8139 8787 33.8 0.0
Tue 02PM 23DEC25 7194 8381 8887 36.1 0.0
Tue 05PM 23DEC25 6580 7203 9962 30.6 0.0
Tue 08PM 23DEC25 6550 8155 10125 30.6 0.0
Tue 11PM 23DEC25 6979 8208 8726 33.9 0.0
Wed 02AM 24DEC25 6876 8096 8635 33.7 0.0
Wed 05AM 24DEC25 5401 6805 8581 28.6 0.0
Wed 08AM 24DEC25 6728 7162 8618 31.5 0.0
Wed 11AM 24DEC25 6925 8102 8525 34.7 0.0
Wed 02PM 24DEC25 7032 8194 8613 35.3 0.0
Wed 05PM 24DEC25 6750 7127 8624 32.2 0.0
Wed 08PM 24DEC25 6723 7106 8615 32.1 8.8
Wed 11PM 24DEC25 6737 7130 8697 32.3 11.0
Thu 02AM 25DEC25 5225 6407 6997 27.8 0.0
Thu 05AM 25DEC25 3773 4917 5481 22.7 0.0
Thu 08AM 25DEC25 3412 3780 5123 20.4 0.0
Thu 11AM 25DEC25 4888 5251 6695 26.4 0.0
Thu 02PM 25DEC25 6462 6779 8139 31.5 0.0
Thu 05PM 25DEC25 6563 6926 8312 31.4 0.0
Thu 08PM 25DEC25 6511 6872 8314 31.1 11.5
Thu 11PM 25DEC25 6637 6988 8407 31.9 11.9
Fri 02AM 26DEC25 6523 6899 8339 31.0 12.3
Fri 05AM 26DEC25 5487 6664 7224 29.5 13.3
Fri 08AM 26DEC25 5088 5452 6893 26.4 0.0
Fri 11AM 26DEC25 5351 6511 6995 29.3 0.0
Fri 02PM 26DEC25 5417 6577 7086 29.6 0.0
Fri 05PM 26DEC25 3845 4988 5551 23.5 0.0
Fri 08PM 26DEC25 3894 5036 6440 24.0 0.0
Fri 11PM 26DEC25 3885 5028 6433 23.9 0.0
Sat 02AM 27DEC25 3546 3914 5255 21.6 0.0
Sat 05AM 27DEC25 5481 6673 8120 29.6 0.0
Sat 08AM 27DEC25 5515 6701 8136 30.0 0.0
Sat 11AM 27DEC25 6603 6931 8303 32.5 0.0
Sat 02PM 27DEC25 6672 7005 8390 32.8 13.8
Sat 05PM 27DEC25 6586 6979 8419 31.5 14.1
Sat 08PM 27DEC25 6529 6937 8406 31.2 14.5
Sat 11PM 27DEC25 6498 6861 8287 31.3 15.0
Sun 02AM 28DEC25 5506 6703 8166 30.1 15.9
Sun 05AM 28DEC25 5426 6647 8158 29.2 16.8
Sun 08AM 28DEC25 5186 5550 7165 27.6 0.0
Sun 11AM 28DEC25 5516 6669 7184 30.4 0.0
Sun 02PM 28DEC25 6584 6893 8254 32.3 0.0
Sun 05PM 28DEC25 5116 5480 7143 25.2 0.0
Sun 08PM 28DEC25 3807 4951 5515 21.9 0.0
Sun 11PM 28DEC25 3345 3713 5057 18.5 0.0
Mon 02AM 29DEC25 3452 3820 5163 20.6 0.0
Mon 05AM 29DEC25 3627 3997 5336 22.4 0.0
Mon 08AM 29DEC25 3377 3745 5089 20.8 0.0
Mon 11AM 29DEC25 4952 5316 6735 27.1 0.0
Mon 02PM 29DEC25 5536 6665 7140 31.1 0.0
Mon 05PM 29DEC25 3343 3711 5055 19.8 0.0
Mon 08PM 29DEC25 2270 3017 3701 16.4 0.0
Mon 11PM 29DEC25 1877 2629 3511 15.6 0.0
Tue 02AM 30DEC25 1965 2717 3554 16.1 0.0
Tue 05AM 30DEC25 2197 2951 3669 16.8 0.0

.
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