BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, DECEMBER 5, 2008 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
7 A.M.
Weather: Clear, few stratocumulus, altocumulus
Temperature: 28F, Dew point: 19F, Wind: W at 10 kts
Sea-level pressure: 30.12 inches Hg, rising
Visibility: 50 miles
24 hour precipitation: Trace
6-hour minimum temperature: 28F
BHO SA 1155 CLR 50 200/28/19/2810/012/ FEW SC ALQDS XCPT SW-W
FEW AC DSNT E/ 8/530 51011 10038 20028
 
10 A.M.
Weather: Clear, few stratocumulus, altocumulus, cirrus
Temperature: 35F, Dew point: 19F, Wind: WNW at 12 kts
Sea-level pressure: 30.17 inches Hg, rising
Visibility: 60 miles
BHO SA 1455 CLR 60 216/35/19/2912/017/ FEW SC ALQDS
FEW AC NE-SE FEW CI NW-N/ 8/531 51016
 
1 P.M.
Weather: Scattered stratocumulus, scattered altocumulus,
few altocumulus lenticularis W-N
Temperature: 37F, Dew point: 13F, Wind: WNW at 11 kts
Wind: Direction variability WSW-N
Sea-level pressure: 30.13 inches Hg, falling
Visibility: 75 miles
6 hour maximum temperature: 38F
BHO SA 1755 50 SCT 150 SCT 75 203/37/13/3011/013/ FEW ACSL W-N
WND 25V01/ 8/540 58013 10038 20028
 
 
WEATHER SUMMARY FOR THURSDAY, DECEMBER 4
 
TEMPERATURE (DEGREES F)
MAX.....53    NORMAL.....42
MIN.....33    NORMAL.....28
MEAN....43    NORMAL.....35
 
DEPARTURE FROM 30-YEAR NORMAL...............+8
TOTAL DEPARTURE FOR THE MONTH..............+29 [+7.1 deg. per day]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............22  DEPARTURE.........-8
TOTAL HEATING UNITS FOR THE MONTH.............89  DEPARTURE........-29
TOTAL HEATING UNITS FOR THE SEASON..........1339  DEPARTURE........-68
TOTAL HEATING UNITS LAST SEASON TO DATE.....1243  DIFFERENCE.......+96
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............42 SSW AT 11:15 A.M. *
                   AEROVANE.............43 S   AT 10:34 A.M.
                   ASOS.................42 SW  AT 11:15 A.M.
                   DAVIS................46 S   AT 11:15 A.M.
FASTEST MILE FOR YESTERDAY..............32 S   AT 11:16 A.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE...........31 SSW AT 11:29 A.M.   
MAXIMUM 2-MINUTE DAVIS AVERAGE..........33 S   AT 11:29 A.M.  
                   AVERAGE............18.6 S
                   ASOS...............17.6
                   DAVIS..............17.2 SSW [208 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.......-0.48
                         ASOS...............0.15
TOTAL PRECIPITATION FOR THE YEAR...........50.41   DEPARTURE.......+3.15
                         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..........0.0  DEPARTURE.....-0.2
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE.....-0.8
TOTAL SNOWFALL FOR THE SEASON.............TRACE  DEPARTURE.....-3.7
 
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  our morning low temp. 28F; the normal low is now 27F
 
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 5
HIGH 65 IN 2001
LOW -1 IN 1926
PRECIP 2.86 INS. IN 1993
SNOWFALL 7.0 INS. IN 1926 and 1981
PEAK GUST 67 MPH WNW IN 1961, S IN 1973
 
RECORDS FOR DECEMBER 6
HIGH 70 IN 2001
LOW 5 IN 1901,1935
PRECIP 2.36 INS. IN 1945
SNOWFALL 12.0 INS. IN 1886, 1981
PEAK GUST 74 MPH NW IN 1981
 
TODAY'S REPORT PREPARED By: Stephanie Radner