Heating and Wind Design Conditions for Pennsylvania

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
Allentown 40.65 75.43 384 14.493 5 10 27 23 21 28 26 25 24 9 270 11 240 95 -2 2.8 5.2
Altoona 40.30 78.32 1503 13.915 5 10 20 18 17 23 20 20 22 9 270 8 250 92 -5 3.6 7.9
Bradford 41.80 78.63 2142 13.593 -6 -1 19 18 16 22 22 19 21 7 270 9 240 87 -15 2.8 5.0
Du Bois 41.18 78.90 1818 13.756 0 5 21 19 17 23 20 21 20 11 280 10 270 90 -9 3.1 7.0
Erie 42.08 80.18 738 14.308 2 7 27 24 22 29 28 26 28 14 200 12 250 90 -4 3.1 6.4
Harrisburg 40.20 76.77 308 14.532 9 13 22 20 18 24 29 22 29 8 270 10 250 97 2 3.3 5.7
Philadelphia, Int’l Airport 39.88 75.25 30 14.680 11 15 24 21 19 26 31 23 30 12 290 11 230 96 5 2.8 5.6
Philadelphia, Northeast A 40.08 75.02 121 14.631 11 15 21 19 17 22 30 19 29 10 300 10 260 97 3 2.5 6.1
Philadelphia, Willow Gr NAS 40.20 75.15 361 14.505 10 14 18 15 13 19 30 16 30 5 300 6 250 99 2 5.4 5.8
Pittsburgh, Allegheny Co. A 40.35 79.93 1253 14.042 4 11 21 19 17 23 24 21 24 11 250 11 240 94 -4 3.1 9.4
Pittsburgh, Int’l Airport 40.50 80.22 1224 14.057 2 7 25 21 19 26 24 23 25 10 260 11 230 93 -6 3.1 6.7
Wilkes-Barre/Scranton 41.33 75.73 948 14.199 2 7 20 18 16 21 26 19 25 8 230 11 220 92 -5 2.8 4.9
Williamsport 41.25 76.92 525 14.419 2 7 23 20 18 24 23 21 25 8 270 10 250 94 -6 3.1 5.9