Station Data
Click below for wind rose diagrams, modal direction data, and snow transport data for Sky Harbor (Duluth).
Wind Roses, Frequency Distribution (%)
Modal Direction
See the degree vs. cardinal direction table
| Oct | Nov | Dec | Jan | Feb | Mar | Oct-Mar |
|---|---|---|---|---|---|---|
| 50 | 220 | 220 | 220 | 220 | 60 | 220 |
Snow Transport
Potential Snow Transport (Qupot) over Snow Accumulation Season [kg/m] by Wind Speed Class [kts]
| Direction | 11-16 | 17-22 | 23-27 | 28-33 | >34 | Total |
|---|---|---|---|---|---|---|
| N | 933 | 591 | 1,523 | |||
| NNE | 641 | 1,017 | 1,658 | |||
| NE | 1,403 | 3,215 | 391 | 539 | 5,548 | |
| ENE | 1,111 | 2,756 | 547 | 898 | 5,312 | |
| E | 552 | 656 | 1,208 | |||
| ESE | 308 | 197 | 505 | |||
| SE | 649 | 197 | 846 | |||
| SSE | 584 | 394 | 978 | |||
| S | 479 | 427 | 905 | |||
| SSW | 941 | 525 | 1,466 | |||
| SW | 1,825 | 4,724 | 6,550 | |||
| WSW | 990 | 820 | 1,810 | |||
| W | 1,914 | 1,870 | 391 | 539 | 4,714 | |
| WNW | 1,923 | 2,100 | 156 | 180 | 4,358 | |
| NW | 2,133 | 2,133 | 78 | 4,344 | ||
| NNW | 1,655 | 1,345 | 3,000 | |||
| Total | 44,724 |