Preliminary Local Climatological Data (WS Form: F-6) Station: DAYTON OH Month: DEC Year: 1998 Temperature in F : :Pcpn :Snow: Wind :Sunshine: Sky :Pk Wnd ===================================== Columns ================================= 1 2 3 4 5 6a 6b 7 8 9 10 11 12 13 14 15 16 17 18 Dy Max Min Avg Dep HDD CDD Wtr Snw Dpth Avg Spd Dir Min Psbl S-S Wx Spd Dr =============================================================================== 1 54 39 47 10 18 0 0.00 0.0 0 9.5 24 290 M M M 8,1 26 310 2 62 40 51 15 14 0 0.00 0.0 0 12.0 18 220 M M M 21 200 3 65 51 58 22 7 0 T 0.0 0 12.7 20 220 M M M 8,1 25 200 4 68 55 62 26 3 0 0.00 0.0 0 10.2 16 230 M M M 1,8 20 220 5 65 55 60 25 5 0 0.02 0.0 0 13.2 22 230 M M M 1,8 26 230 6 72 63 68 33 0 3 T 0.0 0 16.7 30 210 M M M 1,8 38 200 7 68 41 55 21 10 0 0.29 0.0 0 11.9 34 280 M M M 1 44 290 8 45 32 39 5 26 0 T 0.0 0 7.7 17 10 M M M 1 21 10 9 46 26 36 2 29 0 0.00 0.0 0 4.5 11 300 M M M 1,8 14 300 10 43 28 36 3 29 0 0.00 0.0 0 6.7 14 260 M M M 8,1 15 260 11 45 24 35 2 30 0 0.00 0.0 0 4.0 10 320 M M M 1 11 310 12 45 31 38 5 27 0 0.00 0.0 0 3.5 9 150 M M M 9 120 13 47 31 39 7 26 0 0.00 0.0 0 8.1 15 10 M M M 1,8 18 30 14 45 24 35 3 30 0 0.00 0.0 0 4.1 9 340 M M M 1 11 10 15 51 27 39 7 26 0 0.00 0.0 0 8.4 14 210 M M M 17 200 16 41 31 36 5 29 0 0.08 T 0 9.5 16 270 M M M 8,1 20 270 17 37 24 31 0 34 0 T T 0 12.2 22 280 M M M 1,8 26 290 18 45 24 35 4 30 0 0.00 0.0 0 15.6 26 190 M M M 8,1 32 190 19 45 40 43 13 22 0 0.02 0.0 0 11.1 20 200 M M M 1,8 24 210 20 44 36 40 10 25 0 0.04 0.0 0 6.7 15 10 M M M 1 8 16 10 21 56 30 43 13 22 0 1.55 T 0 13.1 24 310 M M M 1 31 310 22 30 10 20 -10 45 0 T T 0 15.2 29 290 M M M 36 300 23 20 9 15 -14 50 0 0.00 0.0 0 3.3 8 360 M M M 9 350 24 27 14 21 -8 44 0 0.00 0.0 0 7.7 16 280 M M M 20 290 25 30 13 22 -7 43 0 0.00 0.0 0 7.7 15 170 M M M 17 190 26 37 18 28 -1 37 0 0.00 0.0 0 11.4 21 250 M M M 23 250 27 39 22 31 3 34 0 0.00 0.0 0 12.0 23 190 M M M 26 220 28 39 25 32 4 33 0 0.00 0.0 0 4.7 10 130 M M M 1 8 11 130 29 41 19 30 2 35 0 0.03 T T 13.6 30 320 M M M 1,8 36 330 30 19 10 15 -13 50 0 T T T 8.4 24 320 M M M 1 30 330 31 21 10 16 -11 49 0 T 1.6 2 8.1 18 260 M M M 1 21 260 =============================================================================== Sm 1392 902 862 3 2.03 1.6 293.5 M M =============================================================================== Av 44.9 29.1 9.5 Fastst Psbl % M Max(mph) Misc ----> 34 280 M M 44 290 =============================================================================== Notes: # Last of several occurrences Column 17 Peak Wind in M.P.H. Preliminary Local Climatological Data (WS Form: F-6) , Page 2 Station: DAYTON OH Month: DEC Year: 1998 ** Temperature Data ** ** Precipitation Data ** SYMBOLS USED IN COLUMN 16 Average Monthly: 37.0 Total for Month: 2.03 1 = FOG Dptr fm normal: +5.4 Dptr fm normal: -0.90 2 = FOG REDUCING VISIBILITY Highest: 72 on 6 Grtst 24hr 1.55 on 21 TO 1/4 MILE OR LESS Lowest: 9 on 23 3 = THUNDER SNOW, ICE PELLETS, HAIL 4 = ICE PELLETS Total month: 1.6 Inches 5 = HAIL Grtst 24hr 1.6 on 31 6 = GLAZE OR RIME Grtst depth: 2 on 31 7 = BLOWING DUST OR SAND: VSBY 1/2 MILE OR LESS 8 = SMOKE OR HAZE * No. of Days with * * WEATHER - Days with * 9 = BLOWING SNOW x = TORNADO Max 32 or below: 6 0.01 inch or more: 7 Max 90 or above: 0 0.10 inch or more: 2 Min 32 or below: 22 0.50 inch or more: 1 Min 0 or below: 0 1.00 inch or more: 1 ** HDD (Base 65) ** Total this Mo. 862 Dptr fm normal -173 Seasonal total 1773 Dptr fm normal -359 ** CDD (Base 65) ** Total this Mo. 3 Dptr fm normal +3 ** Pressure Data ** Seasonal total 1132 Highest SLP 30.63 on 23 Dptr fm normal +246 Lowest SLP on =============================================================================== ------------------