Heating and Wind Design Conditions for Virginia

City Lat. Long. Elev. Std. Pres. Heating Dry Bulb, °F Extreme Wind Speed, mph Coldest Month WS / MCDB MCWS / MCWD to DB Annual Extreme Daily
0.4% 1% 99.6% 0.4% Mean DB Std. DB
°N °W Feet psia 99.6% 99% 1% 2.5% 5% WS MCDB WS MCDB MCWS PWD MCWS PWD Max Min Max Min
Fort Belvoir 38.72 77.18 69 14.659 12 18 18 14 12 19 35 17 34 2 320 6 160 100 2 2.3 7.6
Hampton, Langley AFB 37.08 76.37 10 14.690 21 24 22 19 17 22 41 20 40 10 330 9 240 97 13 3.2 6.1
Lynchburg 37.33 79.20 938 14.204 12 17 19 17 15 21 35 18 35 8 360 9 230 95 5 2.9 5.8
Newport News 37.13 76.50 43 14.673 18 22 19 18 16 20 40 18 41 8 350 10 220 99 11 2.3 4.7
Norfolk 36.90 76.20 30 14.680 20 24 25 22 20 26 40 23 40 12 340 12 230 97 14 2.8 5.4
Oceana, NAS 36.82 76.03 23 14.683 22 25 21 19 17 21 42 19 42 8 310 9 220 98 14 1.8 6.8
Quantico, MCAS 38.50 77.30 13 14.688 16 21 17 14 12 19 36 15 38 6 340 5 230 100 8 3.6 5.9
Richmond 37.50 77.33 177 14.602 14 18 20 18 16 21 40 18 39 7 340 10 230 98 6 2.6 5.8
Roanoke 37.32 79.97 1175 14.082 12 17 23 20 17 27 31 23 32 10 320 10 290 96 4 3.3 5.6
Sterling 38.95 77.45 322 14.525 9 14 22 19 16 25 32 21 31 7 340 10 250 97 -1 3.3 7.0
Washington, R. Reagan A 38.85 77.03 66 14.661 15 20 23 20 18 24 34 21 35 11 340 11 170 99 8 2.5 6.8