BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 4, 2007
ALL TIMES ARE IN EASTERN STANDARD TIME

Today's observations: 

7 A.M.   
Weather: Clear with a few clouds
Temperature: 15F, Dew point: 5F, Wind: W at 12 kt 
Sea-level pressure: 29.96 inches Hg, rising
Visibility: 60 miles 
Snow on ground: 1 inch
BHO SA 1155 CLR 60 147/15/5/2712/996/ FEW CI ALQDS FEW AC NE FEW SC 
DSNT NE-E/ 8/471 4/001 53015 10019 20015


10 A.M.    
Weather: Clear with a few clouds
Temperature: 19F, Dew point: -3F, Wind: WSW at 20G28 kt
Sea-level pressure: 29.98 inches Hg, rising     
Visibility: 60 miles
BHO SA 1455 CLR 60 151/19/-3/2520G28/998/ FEW SC DSNT NE-E PK WND 
2530/1426/ 8/400 50004

WEATHER SUMMARY FOR SATURDAY, FEBRUARY 3

TEMPERATURE (DEGREES F) 
MAX.....32    NORMAL.....34 
MIN.....19    NORMAL.....18   
MEAN....26    NORMAL.....26

DEPARTURE FROM 30-YEAR NORMAL.........+0 
TOTAL DEPARTURE FOR THE MONTH.........+8 (+2.5 DEGREES/DAY) 
 
HEATING DEGREE DAYS 
TOTAL HEATING UNITS FOR YESTERDAY..........39   DEPARTURE........0
TOTAL HEATING UNITS FOR THE MONTH.........109   DEPARTURE.......-8 
TOTAL HEATING UNITS FOR THE SEASON.......3053   DEPARTURE.....-600
TOTAL HEATING UNITS LAST SEASON TO DATE..3175   DIFFERENCE....-122 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............39 W  AT 10:27 A.M.  
                   AEROVANE.............44 W  AT  5:33 A.M.    
                   ASOS.................33 SW AT  8:20 P.M.  
                   DAVIS................39 W  
FASTEST MILE FOR YESTERDAY..............34 W  AT 10:25 A.M.   
MAXIMUM 2-MINUTE ASOS AVERAGE...........26 SW AT  8:11 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........31 W   
AVERAGE WIND SPEED AND DIRECTION......16.8 W 
                    ASOS..............16.4       
                    DAVIS.............17.3 WSW [250 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..........0.23  DEPARTURE.....-0.22  
                         ASOS..............0.22    
TOTAL PRECIPITATION FOR THE YEAR...........3.17  DEPARTURE.....-2.04  
                         ASOS..............3.09 

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.7
TOTAL SNOWFALL FOR THE MONTH................0.7  DEPARTURE......-1.2
TOTAL SNOWFALL FOR THE SEASON...............7.3  DEPARTURE.....-25.0


PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

2/1  35/20/28/+2/0/0/132/22         37 S    Aero 34 MPH S
2/2  35/28/32/+6/0.18/0.3/.../..    20 NW
2/3  32/19/26/0/0.05/0.4/.../..     39 W   


DAILY EXTREMES
Temperature and precipitation records back to 1885, and 
wind records back to 1940 (e = estimated):

RECORDS FOR FEBRUARY 4
HIGH 63F IN 1991
LOW  -4F IN 1886, 1908
PRECIP 1.80 INCHES IN 1926
SNOWFALL 15.0 INCHES IN 1961
PEAK GUST 89 MPH SSE IN 1972

RECORDS FOR FEBRUARY 5
HIGH 65F IN 1991
LOW -14F IN 1918
PRECIP 1.55 INCHES IN 1901
SNOWFALL 16.0 INCHES IN 1907
PEAK GUST 67 MPH WNW IN 1969

TODAY'S REPORT By: Andrew Hoell