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                                                      Weather Station Notes - December 2009  

December 2009: High Low Rainfall Snowfall Snow on High High High
    Temp Temp or Melted Icefall Ground Wind Wind Wind
Date Conditions (F) (F) Snow (in.) (in.) (in.) (m.p.h.) Direction Time
1st Sunny, Mild, Breezy 54 31       19 SSW 12:00 PM
2nd Cold AM, Warmer PM, PM rain (0.49"), Breezy 58 28 0.49     19 S 11:15 PM
3rd Overnight rain, Warmer, Cloudy, Windy 59 45 0.07     21 WSW 11:30 AM
4th Partly sunny, Cooler, Breezy 46 39       17 WSW 10:45 AM
5th AM/PM snow (1.5")(melted 0.16"), Colder, Breezy 39 29 0.16 1.50 1.50 14 N 7:00 AM
6th Partly cloudy, Cold, Breezy 33 25     0.50 14 WSW 5:00 AM
7th Cloudy, Not quite as cold 37 23       9 SSW 10:00 AM
8th Late PM snow (2.0")(melted 0.22") changed to rain, Warmer, Breezy 42 32 0.22 2.00 2.00 11 SE 8:45 PM
9th Overnight rain (1.06"), Warmer, Cloudy, Windy 48 32 1.06   Trace 26 SSW 11:15 PM
10th Partly cloudy, Not as warm, Windy 41 23 0.01     29 WSW 2:00 PM
11th Mostly sunny, Cold, Very Windy 33 18       32 WSW 1:30 PM
12th Sunny, Not as cold, Breezy 41 21       16 SSW 11:00 PM
13th AM rain/freezing rain, rain most of day (0.61"), Slightly colder, Breezy 39 33 0.61 Trace Trace 17 SSW 3:30 AM
14th Mostly cloudy, Warmer, Breezy 50 36       19 S 12:15 PM
15th Cloudy, same temps, Windy 51 36       24 W 7:30 PM
16th Mostly sunny, Cold, Breezy 37 24       19 NNW 4:15 AM
17th Mostly sunny, Colder, Breezy 34 21       19 N 1:15 PM
18th Cloudy, Cold, Late PM snow (2.0")( melted 0.03"), Breezy 34 18 0.03 2.00 2.00 11 E 9:00 PM
19th Overnight/AM/PM snow continued (13.5")(melted 0.73"), Breezy (snow event 15.5") 26 23 0.73 13.50 15.50 19 N 9:15 AM
20th Clearing, Not quite as cold, Breezy 33 21 0.02   13.00 17 W 1:30 PM
21st Cloudy, Warmer, Breezy 38 22     11.00 18 W 11:45 PM
22nd Mostly cloudy, same temps, Breezy 37 25     9.00 16 W 1:45 AM
23rd Sunny, Slightly colder, Breezy 34 16     8.00 11 W 2:00 PM
24th VERY COLD AM, Sunny 34 4     7.00 6 ENE 10:45 AM
25th *CHRISTMAS DAY* Cold AM w/sleet (Trace), PM rain (0.12"), Windy 42 13 0.12 Trace 5.00 22 ENE 7:30 PM
26th Dense AM fog which froze on surfaces, light rain (0.24"), Slightly warmer, Breezy 43 35 0.24   2.00 13 N 2:45 AM
27th Dense overnight fog which froze on surfaces, Partly cloudy, Slightly warmer, Breezy 47 25     2.00 13 S 10:00 PM
28th Partly cloudy, Cooler, Snow flurries, Windy 41 28   Trace 1.00 26 WSW 4:15 AM
29th Sunny, Colder, Very Windy 31 19     1.00 36 NNW 5:45 AM
30th Continued cold, Cloudy, Breezy 31 16     1.00 13 SSW 2:15 PM
31st Overnight & AM snow PM sleet (3.5")(melted 0.26"), Not quite as cold 35 26 0.26 3.50 3.50 5 NNW 4:15 AM

                



             MONTHLY CLIMATOLOGICAL SUMMARY for DEC. 2009

NAME: SMBG   CITY: SMITHSBURG   STATE: MD 
ELEV:   680 ft  LAT: 39 38' 00" N  LONG: 77 36' 00" W

                   TEMPERATURE (F), RAIN  (in), WIND SPEED (mph)

                                      HEAT  COOL        AVG
    MEAN                              DEG   DEG         WIND                 DOM
DAY TEMP  HIGH   TIME   LOW    TIME   DAYS  DAYS  RAIN  SPEED HIGH   TIME    DIR
------------------------------------------------------------------------------------
 1  41.0  53.8   3:00p  31.3  12:00m  24.0   0.0  0.00   2.3  19.0  12:00p   SSW
 2  40.4  58.3  12:00m  28.4   4:45a  24.6   0.0  0.49   1.4  19.0  11:15p     S
 3  50.9  58.9  12:45a  44.8  12:00m  14.1   0.0  0.07   3.9  21.0  11:30a   WSW
 4  42.5  45.8  11:15a  39.3   5:30a  22.5   0.0  0.00   1.4  17.0  10:45a   WSW
 5  34.3  39.5  12:15a  29.3  11:45p  30.7   0.0  0.16   2.2  14.0   7:00a     N
 6  28.9  33.2   2:30p  25.1  12:00m  36.1   0.0  0.00   1.5  14.0   5:00a   WSW
 7  30.7  37.0   2:30p  23.2   7:15a  34.3   0.0  0.00   0.8   9.0  10:00a   SSW
 8  37.4  42.5   2:00p  32.5  11:30p  27.6   0.0  0.22   0.6  11.0   8:45p    SE
 9  38.3  48.8   2:45p  32.5  12:15a  26.7   0.0  1.06   3.0  26.0  11:15p   SSW
10  32.2  41.5  12:15a  22.7  12:00m  32.8   0.0  0.01   9.2  29.0   2:00p   WSW
11  26.0  32.8   3:00p  18.4   7:15a  39.0   0.0  0.00   6.3  32.0   1:30p   WSW
12  32.0  41.5   2:45p  21.1   7:45a  33.0   0.0  0.00   1.8  16.0  11:00p   SSW
13  35.4  39.3  11:45p  32.7   7:45a  29.6   0.0  0.61   1.3  17.0   3:30a   SSW
14  42.5  50.5   1:15p  35.6  11:45p  22.5   0.0  0.00   1.0  19.0  12:15p     S
15  41.5  51.4  11:45a  35.6  12:15a  23.5   0.0  0.00   3.5  24.0   7:30p     W
16  30.5  36.9  12:15a  23.9  10:30p  34.5   0.0  0.00   4.7  19.0   4:15a   NNW
17  26.6  34.4   2:30p  21.1   7:15a  38.4   0.0  0.00   2.6  19.0   1:15p     N
18  26.9  34.3   2:45p  18.0   4:15a  38.1   0.0  0.03   0.4  11.0   9:00p     E
19  24.2  26.3  12:15a  23.0   7:45a  40.8   0.0  0.73   3.5  19.0   9:15a     N
20  26.1  33.1   2:45p  20.6   7:45a  38.9   0.0  0.02   2.2  17.0   1:30p     W
21  31.0  38.2  12:45p  21.8   1:00a  34.0   0.0  0.00   2.6  18.0  11:45p     W
22  32.1  36.8   3:00p  25.3  12:00m  32.9   0.0  0.00   3.4  16.0   1:45a     W
23  25.4  34.1   3:00p  16.1  12:00m  39.6   0.0  0.00   1.1  11.0   2:00p     W
24  17.8  33.8   2:45p   4.5   7:30a  47.2   0.0  0.00   0.2   6.0  10:45a   ENE
25  30.5  41.9  11:30p  13.5   3:00a  34.5   0.0  0.12   3.2  22.0   7:30p   ENE
26  40.9  43.3   2:45a  35.2  12:00m  24.1   0.0  0.24   1.1  13.0   2:45a     N
27  36.1  47.0   2:45p  24.7   8:30a  28.9   0.0  0.00   0.7  13.0  10:00p     S
28  32.0  40.8  12:15a  28.4   9:00p  33.0   0.0  0.00   6.9  26.0   4:15a   WSW
29  24.9  30.9   1:15a  19.5  12:00m  40.1   0.0  0.00   9.1  36.0   5:45a   NNW
30  23.7  30.6   1:45p  15.7   4:15a  41.3   0.0  0.00   0.9  13.0   2:15p   SSW
31  30.3  35.3   1:45p  25.8  12:15a  34.7   0.0  0.26   0.2   5.0   4:15a   NNW
-------------------------------------------------------------------------------------
    32.7  58.9     3     4.5    24  1002.0   0.0  4.02   2.7  36.0    29     WSW

Max >=  90.0:  0
Max <=  32.0:  3
Min <=  32.0: 23
Min <=   0.0:  0
Max Rain: 1.06 ON 12/09/09
Days of Rain: 12 (>.01 in) 9 (>.1 in) 1 (>1 in)
Heat Base:  65.0  Cool Base:  65.0  Method: Integration

    

    

    

    

    

    

    

    

    

    

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