Station Data
Click below for wind rose diagrams, modal direction data, and snow transport data for Duluth.
Wind Roses, Frequency Distribution (%)
Modal Direction
See the degree vs. cardinal direction table
| Oct | Nov | Dec | Jan | Feb | Mar | Oct-Mar |
|---|---|---|---|---|---|---|
| 310 | 320 | 310 | 340 | 320 | 360 | 310 |
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 | 961 | 382 | 1,343 | |||
| NNE | 197 | 35 | 232 | |||
| NE | 77 | 104 | 181 | |||
| ENE | 240 | 173 | 83 | 496 | ||
| E | 875 | 1,423 | 248 | 380 | 2,925 | |
| ESE | 944 | 694 | 1,638 | |||
| SE | 549 | 139 | 688 | |||
| SSE | 463 | 35 | 498 | |||
| S | 558 | 35 | 592 | |||
| SSW | 601 | 139 | 739 | |||
| SW | 806 | 1,770 | 2,576 | |||
| WSW | 1,004 | 451 | 1,455 | |||
| W | 1,501 | 798 | 2,299 | |||
| WNW | 2,050 | 1,041 | 3,091 | |||
| NW | 1,776 | 1,145 | 165 | 190 | 3,276 | |
| NNW | 1,501 | 729 | 83 | 2,313 | ||
| Total | 24,342 |