Heating and Wind Design Conditions for Iowa
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 | |
Burlington | 40.78 | 91.13 | 213 | 98.79 | -20.0 | -17.4 | 9.4 | 8.4 | 7.7 | 10.5 | -11.0 | 9.5 | -7.7 | 3.9 | 310 | 4.9 | 200 | 36.4 | -23.5 | 2.2 | 3.8 |
Cedar Rapids | 41.88 | 91.70 | 265 | 98.18 | -24.0 | -20.6 | 11.2 | 9.9 | 9.0 | 13.1 | -11.3 | 11.6 | -9.9 | 4.6 | 300 | 4.7 | 180 | 35.5 | -26.3 | 2.0 | 3.0 |
Des Moines | 41.53 | 93.65 | 294 | 97.84 | -22.7 | -19.9 | 12.1 | 10.6 | 9.4 | 12.3 | -9.8 | 10.8 | -7.2 | 4.9 | 320 | 5.5 | 180 | 36.5 | -26.2 | 1.9 | 2.8 |
Fort Dodge | 42.55 | 94.18 | 355 | 97.13 | -25.0 | -21.9 | 11.9 | 10.4 | 9.3 | 12.9 | -12.2 | 11.5 | -12.3 | 4.7 | 340 | 5.0 | 190 | 35.5 | -27.4 | 2.7 | 2.7 |
Lamoni | 40.62 | 93.95 | 342 | 97.28 | -21.1 | -17.7 | 8.7 | 7.6 | 6.9 | 9.5 | -5.0 | 8.5 | -6.9 | 3.2 | 320 | 3.9 | 210 | 37.0 | -24.3 | 2.4 | 3.8 |
Mason City | 43.15 | 93.33 | 370 | 96.96 | -26.2 | -23.5 | 12.2 | 10.4 | 9.7 | 13.3 | -12.6 | 11.8 | -11.3 | 5.3 | 300 | 6.3 | 200 | 35.9 | -30.4 | 2.0 | 6.3 |
Ottumwa | 41.10 | 92.45 | 258 | 98.26 | -20.6 | -17.9 | 13.0 | 11.6 | 10.4 | 13.7 | -6.5 | 12.6 | -4.5 | 5.9 | 320 | 6.5 | 200 | 36.7 | -24.2 | 2.2 | 3.8 |
Sioux City | 42.40 | 96.38 | 336 | 97.35 | -23.8 | -21.1 | 12.9 | 11.2 | 10.0 | 14.0 | -9.8 | 12.3 | -8.8 | 4.7 | 320 | 6.4 | 180 | 37.2 | -27.6 | 2.0 | 2.6 |
Spencer | 43.17 | 95.15 | 408 | 96.52 | -26.5 | -23.8 | 10.6 | 9.7 | 8.8 | 11.3 | -10.3 | 10.1 | -10.7 | 4.6 | 300 | 5.4 | 180 | 37.3 | -29.1 | 3.5 | 2.2 |
Waterloo | 42.55 | 92.40 | 268 | 98.15 | -25.7 | -22.9 | 12.1 | 10.8 | 9.7 | 12.8 | -12.1 | 11.2 | -10.4 | 4.1 | 300 | 5.9 | 180 | 35.5 | -29.1 | 1.9 | 3.3 |