Heating and Wind Design Conditions for Washington
City | Lat. | Long. | Elev. | Std. Pres. | Heating Dry Bulb, °C | Extreme Wind Speed, m/s | Coldest Month WS / MCDB | MCWS / MCWD to DB | Annual Extreme Daily | ||||||||||||
0.4% | 1% | 99.6% | 0.4% | Mean DB | Std. DB | ||||||||||||||||
°N | °W | Meters | kPa | 99.6% | 99% | 1% | 2.5% | 5% | WS | MCDB | WS | MCDB | MCWS | PWD | MCWS | PWD | Max | Min | Max | Min | |
Bellingham | 48.80 | 122.53 | 48 | 100.75 | -9.2 | -6.0 | 10.3 | 9.1 | 8.2 | 12.3 | 0.8 | 10.1 | 1.1 | 7.4 | 40 | 4.0 | 290 | 30.5 | -11.4 | 1.7 | 4.1 |
Hanford | 46.57 | 119.60 | 223 | 98.67 | -15.1 | -11.1 | 11.2 | 9.4 | 8.2 | 10.8 | 6.8 | 8.5 | 6.7 | 2.7 | 20 | 3.4 | 20 | 40.4 | -16.9 | 1.7 | 5.0 |
Olympia | 46.97 | 122.90 | 61 | 100.59 | -7.8 | -4.8 | 9.2 | 7.9 | 7.1 | 9.4 | 7.0 | 8.4 | 7.2 | 2.1 | 180 | 3.8 | 50 | 34.6 | -12.0 | 2.2 | 4.5 |
Quillayute | 47.95 | 124.55 | 62 | 100.58 | -5.1 | -2.8 | 14.7 | 11.9 | 9.2 | 18.5 | 7.1 | 15.5 | 7.3 | 2.9 | 60 | 3.8 | 240 | 30.8 | -7.5 | 4.7 | 3.6 |
Seattle, Int’l Airport | 47.45 | 122.30 | 137 | 99.69 | -4.8 | -2.2 | 9.8 | 8.6 | 7.6 | 10.6 | 6.9 | 9.5 | 6.7 | 4.4 | 10 | 4.5 | 350 | 33.4 | -7.4 | 2.0 | 3.8 |
Spokane, Fairchild AFB | 47.62 | 117.65 | 750 | 92.63 | -17.4 | -13.8 | 11.9 | 10.3 | 9.1 | 12.7 | 3.9 | 11.1 | 3.4 | 3.1 | 50 | 4.0 | 240 | 36.5 | -21.4 | 1.8 | 4.8 |
Stampede Pass | 47.28 | 121.33 | 1209 | 87.62 | -16.1 | -12.4 | 9.5 | 8.3 | 7.3 | 12.0 | -7.4 | 10.0 | -4.0 | 5.9 | 90 | 3.3 | 100 | 29.1 | -16.4 | 1.8 | 4.0 |
Tacoma, McChord AFB | 47.13 | 122.48 | 98 | 100.15 | -7.5 | -4.7 | 8.1 | 6.9 | 5.8 | 9.6 | 7.1 | 7.9 | 7.5 | 1.0 | 180 | 3.1 | 20 | 34.5 | -10.9 | 1.5 | 3.8 |
Walla Walla | 46.10 | 118.28 | 367 | 96.99 | -15.6 | -11.1 | 9.9 | 8.6 | 7.8 | 10.9 | 9.7 | 9.6 | 8.6 | 2.7 | 180 | 4.1 | 300 | 40.3 | -17.4 | 1.8 | 6.5 |
Wenatchee | 47.40 | 120.20 | 379 | 96.85 | -15.9 | -12.6 | 9.8 | 8.6 | 7.7 | 7.7 | 2.0 | 5.5 | -0.3 | 1.4 | 100 | 3.9 | 280 | 38.1 | -18.7 | 1.4 | 4.0 |
Yakima | 46.57 | 120.53 | 325 | 97.48 | -15.4 | -11.8 | 10.7 | 9.1 | 7.6 | 10.1 | 8.2 | 8.3 | 6.3 | 2.9 | 250 | 3.3 | 90 | 38.1 | -18.7 | 1.8 | 4.7 |