BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, DECEMBER 26, 2008 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
7 A.M.
Weather: Clear, few stratocumulus distant east,
patches dense cirrus all quadrants
Temperature: 24F, Dew point: 10F, Wind: NNW at 10 kts
Sea-level pressure: 30.57 inches Hg, rising  
Visibility: 35 miles
6-hour minimum temperature: 23F
Snow on ground: 1 inch
BHO SA 1155 CLR 35 351/24/10/3310/057/
FEW SC DSNT E PTCHS DENS CI ALQDS/
8/502 4/001 51012 10027 20023
 
10 A.M.
Weather: Scattered cirrus, few stratocumulus NE,
few altocumulus distant SW-W
Temperature: 29F, Dew point: 15F, Wind: W at 5 kts
Sea-level pressure: 30.63 inches Hg, rising
Visibility: 35 miles
BHO SA 1455 250 SCT 35 371/29/15/2805/063/
FEW SC NE FEW AC DSNT SW-W THN K LYR NW-N/ 8/555 53020
 
1 P.M.
Weather: Overcast cirrostratus, few altocumulus S-SW,
break in overcast E-S
Temperature: 34F, Dew point: 17F, Wind: S at 7 kts
Sea-level pressure: 30.59 inches Hg, falling
Visibility: 35 miles
6-hour maximum temperature: 35F
BHO SA 1755 E200 OVC 35 358/34/17/1907/059/
FEW AC S-SW BINOVC E-S/ 8/057 55013 10035 20024
 
 
WEATHER SUMMARY FOR THURSDAY, DECEMBER 25
 
TEMPERATURE (DEGREES F)
MAX.....52    NORMAL.....36
MIN.....27    NORMAL.....21
MEAN....40    NORMAL.....29
 
DEPARTURE FROM 30-YEAR NORMAL..............+11
TOTAL DEPARTURE FOR THE MONTH..............+25 [+0.8 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............25  DEPARTURE........-11
TOTAL HEATING UNITS FOR THE MONTH............800  DEPARTURE........-19
TOTAL HEATING UNITS FOR THE SEASON..........2050  DEPARTURE........-58
TOTAL HEATING UNITS LAST SEASON TO DATE.....1989  DIFFERENCE.......+61
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............54  W   AT  5:32 A.M.
                   AEROVANE.............55 SW   AT  2:29 A.M.
                   ASOS.................54  W   AT  4:00 A.M.
                   DAVIS................52 SSW  AT  1:31 A.M.
FASTEST MILE FOR YESTERDAY..............40  W   AT  5:31 A.M. * 
MAXIMUM 2-MINUTE ASOS AVERAGE...........38 SSW  AT  TIME N/A
MAXIMUM 2-MINUTE DAVIS AVERAGE..........39 SW   AT  1:56 A.M.
                   AVERAGE............21.5 W
                   ASOS...............19.5
                   DAVIS..............19.8 W  [274 DEG]
* LAST OF SEVERAL OCCURANCES
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00  DEPARTURE.........-0.15
                         ASOS...............0.00
TOTAL PRECIPITATION FOR THE MONTH...........8.03  DEPARTURE.........+4.37
                         ASOS...............8.08
TOTAL PRECIPITATION FOR THE YEAR...........58.32  DEPARTURE.........+8.00
                         ASOS..............61.09 #
# 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......-0.4
TOTAL SNOWFALL FOR THE MONTH...............22.5  DEPARTURE....+14.2
TOTAL SNOWFALL FOR THE SEASON..............22.5  DEPARTURE....+11.3
 
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/0.0/122/22       42 SSW   Aero 43 MPH S
12/5  38/26/32/-3/0.00/0.0/404/73    26 WNW
12/6  37/23/30/-4/0.00/0.0/309/56    21 S
12/7  32/20/26/-8/0.12/1.6/000/00    54 W     Aero 53 MPH W
12/8  21/10/16/-17/0.00/0.0/462/84   50 W     Aero 50 MPH W
12/9  53/13/33/0/0.01/T/000/00       48 S     Aero 50 MPH S
12/10 60/37/49/+16/0.43/0.0/000/00   55 S     Aero 58 MPH S
12/11 37/34/36/+4/1.52/T/000/00      38 NNE   Aero 35 MPH NNE
12/12 61/28/45/+13/2.32/0.0/088/16   75 SSE   Aero 76 MPH SSE
12/13 28/17/23/-9/0.00/0.0/531/97    33 W
12/14 43/17/30/-1/0.00/0.0/328/60    36 S
12/15 61/43/52/+21/0.00/0.0/076/15   55 S     Aero 56 MPH S
12/16 57/26/42/+11/0.14/T/000/00     43 W
12/17 38/25/32/+1/0.46/1.2/000/00    26 E     Aero 22 MPH E
12/18 37/28/33/+3/0.00/0.0/261/48    23 WSW
12/19 29/14/22/-8/1.28/../000/00     46 NE    Aero 45 MPH NE
12/20 20/11/16/-14/.../../000/00     30 NNW
12/21 33/17/25/-5/.../../000/00      43 W     Aero 44 MPH W
12/22 22/12/17/-12/0.00/0.0/544/100  47 W     Aero 45 MPH W
12/23 27/9/18/-11/0.00/0.0/458/84    30 W
12/24 50/23/37/+8/.../../000/00      53 S
12/25 52/27/40/+11/.../../518/95     54 W
 
12/26  morning low temp. 23F; normal low temp. now 21F
 
NEW DAILY RECORDS FOR DECEMBER 2008...
 
12/12 PEAK GUST 75 MPH SSE; PREVIOUS 74 MPH W IN 2000
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR DECEMBER 26
HIGH 58 IN 1973,1982
LOW -12 IN 1980
PRECIP 3.64 INS. IN 1969
SNOWFALL 17.5 INS. IN 1909
PEAK GUST 84 MPH SSE IN 1957
 
RECORDS FOR DECEMBER 27
HIGH 57 IN 1895,1949
LOW -4 IN 1903
PRECIP 2.43 INS. IN 1969
SNOWFALL 11.2 INS. IN 1947
PEAK GUST 53e W IN 1957,1978; WNW 1976
 
TODAY'S REPORT PREPARED By: Stephanie Radner