BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 7, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.  
Weather: Clear with a few clouds
Temperature: 39F, Dew point: 25F, Wind: W at 15 kt
Sea-level pressure: 30.19 inches Hg, rising
Visibility: 65 miles
BHO SA 1155 CLR 65 223/39/25/2815/019/ 
FEW SC E-S/ 8/400 53039 70001 10046 20039

10 A.M.    
Weather: Thin scattered cirrus 
Temperature: 43F, Dew point: 26F, Wind: WNW at 14G22 kt
Sea-level pressure: 30.28 inches Hg, rising   
Visibility: 85 miles
BHO SA 1455 250 –SCT 85 253/43/26/2914G22/028/ 
FEW SC DSNT NW CLR N/ 8/401 51030
 
WEATHER SUMMARY FOR SATURDAY, JANUARY 6 
 
TEMPERATURE (DEGREES F)
MAX.....66*  NORMAL.....34 
MIN.....48#  NORMAL.....19   
MEAN....57   NORMAL.....26
 
DEPARTURE FROM 30-YEAR NORMAL........+31
TOTAL DEPARTURE FOR THE MONTH.......+116 (+19.1 DEGREES/DAY)
 
*RECORD HIGH MAXIMUM TEMPERATURE
#RECORD HIGH MINIMUM TEMPERATURE
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...........8   DEPARTURE......-31
TOTAL HEATING UNITS FOR THE MONTH.........113   DEPARTURE.....-116 
TOTAL HEATING UNITS FOR THE SEASON.......1986   DEPARTURE.....-572
TOTAL HEATING UNITS LAST SEASON TO DATE..2401   DIFFERENCE....-415
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...........48 SSW AT 10:23 A.M.               
                   AEROVANE............47 SSW AT 10:23 A.M.                      
                   ASOS................46 SSW AT 10:54 A.M.                    
                   DAVIS...............55 SSW                
FASTEST MILE FOR YESTERDAY.............36 SSW AT 10:35 A.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE..........36 SSW AT 10:38 A.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE.........39 SSSW                 
AVERAGE WIND SPEED AND DIRECTION.....21.7 S 
                   ASOS..............21.9          
                   DAVIS.............21.7 SSW [209 deg] 
* last of several occurrences..
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01  DEPARTURE......-0.14
                         ASOS..............0.02
TOTAL PRECIPITATION FOR THE MONTH..........1.08  DEPARTURE......+0.18 
                         ASOS..............1.08    
TOTAL PRECIPITATION FOR THE YEAR...........1.08  DEPARTURE......+0.18
                         ASOS..............1.08
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0   DEPARTURE.....-0.5
TOTAL SNOWFALL FOR THE MONTH................0.0   DEPARTURE.....-3.0
TOTAL SNOWFALL FOR THE SEASON...............3.7   DEPARTURE....-12.9
 
PRELIMINARY CLIMATE SUMMARY FOR JANUARY 2007......CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
1/1  53/30/42/+15/0.98/0/000/00     38 SE 
1/2  43/31/37/+10/0.03/0/505/92     44 W    Aero 47 MPH W   
1/3  49/30/40/+13/0/0/435/79        40 S   
1/4  53/40/47/+20/0/0/187/34        31 SSW
1/5  61/46/54/+27/.../0/000/00      44 S    Aero 44 MPH S
1/6  66/48/57/+31/.../0/.../..      48 SSW  Aero 47 MPH SSW 
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 7
HIGH 60F IN 1930
LOW -7F IN 1896
PRECIP 1.97 INCHES IN 1977
SNOWFALL 16.0 INCHES IN 1977
WIND 74 MPH NW IN 1968
 
RECORDS FOR JANUARY 8
HIGH 59F IN 1930
LOW -8F IN 1968
PRECIP 1.70 INCHES IN 1958,1970
SNOWFALL 12.5 INCHES IN 1996
WIND 77 MPH NNW IN 1958
 
TODAY'S REPORT By: Andrew Hoell