BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, DECEMBER 7, 2008 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
7 A.M.
Weather: Overcast with light snow
Temperature: 29F, Dew point: 25F, Wind: NW at 4 kt
Sea-level pressure: 29.68 inches Hg, falling
Visibility: 1 mile
24-hour precipitation: Trace
6-hour snowfall: Trace
6-hour minimum temperature: 29F
BHO SA 1155 E5 OVC 1S- 051/29/25/3204/968/
WND LGT TRACE SNW PST 24 HR/ 8/6// 58020 6000/ 70000 10031 20029
 
10 A.M.
Weather: Obscured sky with snow
Temperature: 30F, Dew point: 29F, Wind: WNW at 5 kt
Sea-level pressure: 29.59 inches Hg, falling
Visibility: 1/4 of a mile
BHO SA 1455 W2 X1 1/4S- 019/30/29/3005/959/ WND LGT/ 8//// 56032 ASOS 60006
 
1 P.M.
Weather: Overcast with light snow
Temperature: 30F, Dew point: 29F, Wind: W at 8 kt
Sea-level pressure: 29.51 inches Hg, falling
Visibility: 1/2 of a mile
6-hour snowfall: 1.5 inches
6-hour precipitation: 0.08 inches
6 hour maximum temperature: 30F
BHO SA 1755 E5 1/2S- 994/30/29/2708/951/
TOTAL NEW SNW PST 6 HR 1.5 IN/ 8/6// 56025 ASOS 60008 10030 20029
 
 
WEATHER SUMMARY FOR SATURDAY, DECEMBER 6
 
TEMPERATURE (DEGREES F)
MAX.....37    NORMAL.....41
MIN.....23    NORMAL.....27
MEAN....30    NORMAL.....34
 
DEPARTURE FROM 30-YEAR NORMAL...............-4
TOTAL DEPARTURE FOR THE MONTH..............+22 [+3.5 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............35  DEPARTURE.........+4
TOTAL HEATING UNITS FOR THE MONTH............157  DEPARTURE........-22
TOTAL HEATING UNITS FOR THE SEASON..........1407  DEPARTURE........-61
TOTAL HEATING UNITS LAST SEASON TO DATE.....1328  DIFFERENCE.......+79
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............21   S AT  1:03 P.M.
                   AEROVANE.............20   S AT  1:01 P.M.
                   ASOS.................18   S AT  1:03 P.M.
                   DAVIS................20 SSW AT  8:06 P.M.
FASTEST MILE FOR YESTERDAY..............15   S AT  8:40 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...........14 SSW AT 10:08 P.M.   
MAXIMUM 2-MINUTE DAVIS AVERAGE..........17 SSW AT  8:07 P.M.  
                   AVERAGE.............8.0   S
                   ASOS................7.8
                   DAVIS...............7.5   S [174 deg]
* Last of several occurrences.
 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....TRACE   DEPARTURE.......-0.15
                         ASOS...............0.00
TOTAL PRECIPITATION FOR THE MONTH...........0.12   DEPARTURE.......-0.78
                         ASOS...............0.15
TOTAL PRECIPITATION FOR THE YEAR...........50.41   DEPARTURE.......+2.85
                         ASOS..............53.16 #
# Includes erroneous ASOS precipitation data on 2/13/08.
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M........TRACE  DEPARTURE.....-0.3
TOTAL SNOWFALL FOR THE MONTH..............TRACE  DEPARTURE.....-1.4
TOTAL SNOWFALL FOR THE SEASON.............TRACE  DEPARTURE.....-4.3
 
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 2008 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
12/1  59/43/51/+15/0.12/0.0/374/67   43 SSW 
12/2  47/32/40/+4/0.00/0.0/451/81    33 SSW
12/3  44/29/37/+2/0.00/0.0/556/100   24 SSW
12/4  53/33/43/+8/T/0.0/.../..       42 SSW   Aero 43 MPH S
12/5  38/26/32/-3/0.00/0.0/.../..    26 WNW
12/6  37/23/30/-4/0.00/0.0/.../..    21 S
 
NEW DAILY RECORDS FOR DECEMBER 2008...
 
None to date.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR DECEMBER 7
HIGH 74 IN 1998
LOW 6 IN 1906
PRECIP 1.67 INS. IN 1953
SNOWFALL 4.0 INS. IN 1886
PEAK GUST 76e SE IN 1976
 
RECORDS FOR DECEMBER 8
HIGH 62 IN 1966
LOW -4 IN 1906
PRECIP 1.54 INS. IN 1969
SNOWFALL 2.5 INS. IN 2001
PEAK GUST 78e W IN 1979
 
TODAY'S REPORT PREPARED By: Andrew Hoell