BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JANUARY 3, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
CLOUDS CLEARING AWAY BY NOON AND THE TEMPERATURE
IS HEADING FOR THE 50-DEGREE MARK ONCE AGAIN!
 
Some cloudiness moving through at mid-morning held the
temperature down near 40 degrees, but as clearing arrived 
just before noon our temperature shot up 7 degrees in one
hour from noon to 1 p.m.  It appears that we'll reach the lower
50's this afternoon with a gusty SSW wind, which is reaching
to 35 to 40 mph at times. 
 
Today's observations:
 
7 A.M.  
Weather: Clear with few clouds 
Temperature: 32F, Dew point: 23F, Wind: WSW at 15 kts
Sea-level pressure: 30.34 inches Hg, rising 
Visibility: 65 miles, 75 miles NW 
6-hourly min. temp. 30 deg. 
24-hourly precip: trace  
BHO SA 1155 CLR 65 273/32/23/2415/034/ FEW AC/ACSL SSW-W 
CI SSE-SW AND DSNT NNE-ENE BRILLIANT FULL MOON WNW VSBY NW 75/ 
8/041 53001 10032 20030 
  
10 A.M.    
Weather: Scattered middle and high clouds 
Temperature: 40F, Dew point: 21F, Wind: S at 12 kts
Sea-level pressure: 30.31 inches Hg, falling  
Visibility: 80 miles
BHO SA 1455 150 SCT 250 SCT 80 264/40/21/1912/031/ FEW LWR ACSL W 
CLR SKY NE-E VSBY NW 90 LOOMING OF DSNT MTNS WNW-NW/ 8/041 58009   
 
1 P.M.    
Weather: Scattered middle and high clouds 
Temperature: 48F, Dew point: 17F, Wind: SSW at 20G30 kts
Wind: Peak wind 30 kts SSW past hour 
Sea-level pressure: 30.21 inches Hg, falling  
Visibility: 80 miles, NW 90 miles  
BHO SA 1755 150 SCT 200 SCT 250 SCT 80 230/48/17/2020G30/021/
FEW LWR AC/ACC DSNT ESE-SSE PTCH DENSE CI XTDNG WSW-NNW VSBY 
NW 90 PK WND 2030/45/ 8/042 58034 10048 20032 
  
WEATHER SUMMARY FOR TUESDAY, JANUARY 2 
 
TEMPERATURE (DEGREES F)
MAX.....43   NORMAL.....35 
MIN.....31   NORMAL.....19   
MEAN....37   NORMAL.....27
 
DEPARTURE FROM 30-YEAR NORMAL........+10
TOTAL DEPARTURE FOR THE MONTH........+25 [ +12.3 PER DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........28   DEPARTURE......-10
TOTAL HEATING UNITS FOR THE MONTH......... 51   DEPARTURE......-25 
TOTAL HEATING UNITS FOR THE SEASON.......1924   DEPARTURE.....-481
TOTAL HEATING UNITS LAST SEASON TO DATE..2151   DIFFERENCE....-278
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...........44 W    AT 12:33 P.M.                
                   AEROVANE............47 W    AT 12:33 A.M.                     
                   ASOS................41 W    AT 12:10 P.M.                   
                   DAVIS...............45 W    AT 12:08 P.M.               
FASTEST MILE FOR YESTERDAY.............33 W    AT 12:33 P.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE..........32 W    AT 12:33 P.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE.........35 W    AT 12:10 P.M.                 
AVERAGE WIND SPEED AND DIRECTION..... 18.2 W 
                   ASOS.............. 17.7          
                   DAVIS............. 18.4 W   [270 deg] 
 
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..........1.01  DEPARTURE......+0.73 
                         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.....-1.0
TOTAL SNOWFALL FOR THE SEASON...............3.7   DEPARTURE....-10.9
 
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   morning low temp. 30 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 3
HIGH 64F IN 2000
LOW -4F IN 1904
PRECIP 1.93 INS. IN 1999
SNOW 11.3 INS. 1996
WIND 92 MPH S IN 1960
 
RECORDS FOR JANUARY 4
HIGH 60F IN 2000
LOW -8F IN 1904, 1981
PRECIP 1.79 INS. IN 1982
SNOW 8.6 INS. 1923, 1941
WIND 84 MPH S IN 1982
 
TODAY'S REPORT By: Robert Skilling