BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JANUARY 9, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
YESTERDAY'S STORM BROUGHT 0.69 INCH RAINFALL
WIND GUSTS TO 45 MPH W DURING THE LATE EVENING
 
Rainfall totaled 0.69 inch yesterday with measurable
rainfall recorded for each hour from 1 a.m. through 4 p.m. 
Wind gusts reached near 40 MPH from the east during the 
early morning hours while the peak gust for the day 
of 45 MPH W occurred late last evening.
 
Yesterday was yet another day with temperatures averaging
far above the normal and for the second day in a row a departure
of plus 18 degrees was recorded.  Only two days since Dec. 9th have 
had below normal temperatures and only by one degree each on 
December 29th and 30th. January is averaging 18.8 degrees
warmer than normal through 8 days. 
 
Today's observations:
 
7 A.M.   
Weather: Clear, clouds offshore distant ENE-SE-SSW 
Temperature: 30F, Dew point: 21F, Wind: SW 13 kts
Sea-level pressure: 29.72 inches Hg, rising
Visibility: 60 miles
24-hourly rainfall: 0.45 in. 
6-hourly min. temp. 30 deg. 
BHO SA 1155 CLR 60 064/30/21/2313/972/ SC ALG/OFFSHR DSNT ENE-SE-SSW 
SC/MDT CUFRM TOPS DSNT SSE-SSW/ 8/500 53014 MANUAL 70045
ASOS 70046 10035 20030 
 
10 A.M.    
Weather: Clear, few distant clouds 
Temperature: 35F, Dew point: 18F, Wind: WSW at 18G27 kts
Sea-level pressure: 29.77 inches Hg, rising  
Visibility: 70 miles  
BHO SA 1455 CLR 70 080/35/18/2418G27/977/ FEW SC DSNT SSE-SSW
AND WNW-N FEW AC/ACSL DSNT WSW CI DSNT S-SW PK WND 2427/55/ 
8/541 53016 
  
1 P.M.    
Weather: Clear with few cumulus clouds 
Temperature: 40F, Dew point: 20F, Wind: SW at 14G20 kts
Sea-level pressure: 29.71 inches Hg, falling  
Visibility: 70 miles  
6-hourly max. temp: 41 deg.                     
BHO SA 1755 CLR 70 060/40/20/2214G20/971/ FEW CU ALQDS 
WND 18V26/ 8/100 58020 10041 20030 
 
WEATHER SUMMARY FOR MONDAY, JANUARY 8 
 
TEMPERATURE (DEGREES F)
MAX.....52   NORMAL.....34 
MIN.....36   NORMAL.....18   
MEAN....44   NORMAL.....26
 
DEPARTURE FROM 30-YEAR NORMAL........+18
TOTAL DEPARTURE FOR THE MONTH.......+152 (+18.8 DEGREES/DAY) 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........21   DEPARTURE......-18
TOTAL HEATING UNITS FOR THE MONTH.........155   DEPARTURE.....-152 
TOTAL HEATING UNITS FOR THE SEASON.......2028   DEPARTURE.....-607
TOTAL HEATING UNITS LAST SEASON TO DATE..2438   DIFFERENCE....-410
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...........45   W AT 10:20 P.M.                
                   AEROVANE............45   W AT 10:20 P.M.                        
                   ASOS................41   W AT 10:20 P.M.                      
                   DAVIS...............46 WSW AT 10:20 P.M.                 
FASTEST MILE FOR YESTERDAY.............33   W AT 10:19 P.M.      
MAXIMUM 2-MINUTE ASOS AVERAGE..........32   W AT 10:21 P.M.           
MAXIMUM 2-MINUTE DAVIS AVERAGE.........34   W AT 10:20 P.M.                
AVERAGE WIND SPEED AND DIRECTION.....16.0   W 
                   ASOS..............16.4          
                   DAVIS.............16.2   S [190 deg] 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.45  DEPARTURE......+0.30
                         ASOS..............0.46
TOTAL PRECIPITATION FOR THE MONTH..........1.77  DEPARTURE......+0.57 
                         ASOS..............1.78    
TOTAL PRECIPITATION FOR THE YEAR...........1.77  DEPARTURE......+0.57
                         ASOS..............1.78
 
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.....-4.0
TOTAL SNOWFALL FOR THE SEASON...............3.7   DEPARTURE....-13.9
 
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/+20/0/0/198/36*       31 SSW
1/5  61/46/54/+27/0.04/0/000/00     44 S    Aero 44 MPH S
1/6  66/48/57/+31/0.03/0/161/29     48 SSW  Aero 47 MPH SSW 
1/7  50/38/44/+18/0/0/505/91        43 W    Aero 44 MPH W 
1/8  52/36/44/+18/0.69/0/000/00     45 W    Aero 45 MPH W
 
* sunshine corrected from 187/34 in earlier reports
 
1/9  morning low temp. 30 deg; normal low now 18 deg. 
      
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 9
HIGH 62F IN 1937
LOW -9F IN 1968
PRECIP 3.00 INS. IN 1956
SNOWFALL 10.0 INS. IN 1904
PEAK GUST 101e MPH SE IN 1978 [RECORD FOR MONTH]
 
RECORDS FOR JANUARY 10
HIGH 54F IN 2000
LOW -7F IN 2004
PRECIP 2.16 INS. IN 1935
SNOWFALL 6.3 INS. IN 1977
WIND 73e SE IN 1977
 
TODAY'S REPORT By: Robert Skilling