BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JANUARY 5, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
NEW RECORD HIGH TEMPERATURE FOR TODAY, JANUARY 5
 
The high temperature so far today is 61 degrees, the 
previous record high for January 5 was 58 degrees in 
1950. 
 
Today's observations:
 
7 A.M.  
Weather: Overcast altocumulus
Temperature: 51F, Dew point: 49F, Wind: S at 21G30 kts
Wind: Peak wind 31 kts S past hour 
Sea-level pressure: 29.99 inches Hg, falling 
Visibility: 15 miles 
6-hourly min. temp. 47 deg. 
BHO SA 1155 90 SCT E110 OVC 15 155/51/49/1821G30/999/ 
FEW STFRA E-SE THN F PK WND 1831/15/ 8/67/ 56007 10051 20047
 
10 A.M.    
Weather: Scattered stratocumulus, overcast altocumulus
Temperature: 56F, Dew point: 49F, Wind: S at 26G32 kts
Wind: Peak wind 32 kts S past hour 
Sea-level pressure: 29.96 inches Hg, falling  
Visibility: 20 miles  
BHO SA 1455 40 SCT E110 OVC 20 146/56/49/1826G32/996/ 
HZY PK WND 1832/1455/ 8/57/ 58009
 
1 P.M.    
Weather: Light rain shower, broken stratocumulus, overcast 
altocumulus
Temperature: 60F, Dew point: 52F, Wind: SW at 17G35 kts
Wind: Peak wind 38 kts SSW past hour 
Sea-level pressure: 29.91 inches Hg, falling  
Visibility: 20 miles  
6-hourly rainfall: trace
BHO SA 1755 E24 BKN 110 OVC 20RW- 129/60/52/2217G35/991/ 
HZY PK WND 2038/01 RB20E40B55 PCPN VRY LGT/ 8/57/ 55017 
MANUAL 6000/ 10061 20051
 
WEATHER SUMMARY FOR THURSDAY, JANUARY 4 
 
TEMPERATURE (DEGREES F)
MAX.....53   NORMAL.....34 
MIN.....40   NORMAL.....19   
MEAN....47   NORMAL.....27
 
DEPARTURE FROM 30-YEAR NORMAL........+20
TOTAL DEPARTURE FOR THE MONTH....... +58 [ +14.3 PER DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........18   DEPARTURE......-20
TOTAL HEATING UNITS FOR THE MONTH......... 94   DEPARTURE......-58 
TOTAL HEATING UNITS FOR THE SEASON.......1967   DEPARTURE.....-514
TOTAL HEATING UNITS LAST SEASON TO DATE..2295   DIFFERENCE....-328
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...........31 SSW  AT  5:38 P.M. *                
                   AEROVANE............31 SSW  AT  5:39 P.M.                     
                   ASOS................29 SSW  AT  5:39 P.M.                   
                   DAVIS...............33 SSW  AT  2:10 P.M.               
FASTEST MILE FOR YESTERDAY.............24 SSW  AT  5:41 P.M. *     
MAXIMUM 2-MINUTE ASOS AVERAGE..........24 SSW  AT  2:38 P.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE.........29 SSW  AT  5:43 P.M.                 
AVERAGE WIND SPEED AND DIRECTION..... 15.9 SSW 
                   ASOS.............. 16.1          
                   DAVIS............. 17.2 SSW   [201 deg] 
* last of several occurrences..
 
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..........1.01  DEPARTURE......+0.41 
                         ASOS..............1.00    
TOTAL PRECIPITATION FOR 2006..............60.35  DEPARTURE......+9.57
                         ASOS.............59.91
 
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.....-2.0
TOTAL SNOWFALL FOR THE SEASON...............3.7   DEPARTURE....-11.9
 
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   morning low temp. 47 deg; normal low now 19 deg. 
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 5
HIGH 58F IN 1950
LOW -9F IN 1981
PRECIP 0.98 INS. IN 1993
SNOW 4.5 INS. IN 1891
WIND 70 MPH WNW IN 1959
 
RECORDS FOR JANUARY 6
HIGH 60F IN 1913
LOW -14F IN 1896
PRECIP 3.10 INS. IN 1889 [RECORD FOR MONTH]
SNOWFALL 7.5 INS. IN 1893
WIND 70 MPH WNW IN 1959
 
TODAY'S REPORT By: Stephanie Radner