BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MARCH 7, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Overcast
Temperature: 5F, Dew point: -17F, Wind: W at 11 kts 
Sea-level pressure: 30.35 inches Hg, falling
Visibility: 75 miles 
6-hour min. temp. 2 deg. 
Snow depth: trace
BHO SA 1155 E90 OVC 75 276/5/-17/2811/035/ 
FEW SC NE-SE BINOVC NE-SE/ 8/52/ 58002 10005 20002
 
10 A.M.   
Weather: Overcast
Temperature: 11F, Dew point: -15F, Wind: WSW at 10 kts 
Sea-level pressure: 30.33 inches Hg, falling
Visibility: 60 miles  
BHO SA 1455 85 SCT E250 OVC 60 270/11/-15/2410/033/ 
ACSL WNW-ENE FEW SC DSNT NE-E OVC PTLY THN/ 8/541 58006
 
1 P.M.   
Weather: Scattered clouds
Temperature: 20F, Dew point: -5F, Wind: WSW at 13 kts 
Sea-level pressure: 30.23 inches Hg, falling
Visibility: 55 miles 
6-hour max. temp. 21 deg.
BHO SA 1755 150 SCT 250 -SCT 300 -SCT 55 236/20/-5/2413/023/ 
ACSL NE-S-W FEW CU SSE-NW WND 19V28/ 8/141 58034 10021 20005
 
WEATHER SUMMARY FOR TUESDAY, MARCH 6
 
TEMPERATURE (DEGREES F)
MAX.....19    NORMAL.....42 
MIN......3    NORMAL.....25
MEAN....11    NORMAL.....33                     
 
DEPARTURE FROM 30-YEAR NORMAL.........-22
TOTAL DEPARTURE FOR THE MONTH.........- 7 (-1.0 DEGREES/DAY) 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........54   DEPARTURE.......+22
TOTAL HEATING UNITS FOR THE MONTH.........202   DEPARTURE.......+ 5 
TOTAL HEATING UNITS FOR THE SEASON.......4293   DEPARTURE......-474
TOTAL HEATING UNITS LAST SEASON TO DATE..4321   DIFFERENCE......-28
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............57   W  AT 12:43 P.M.       
                   AEROVANE.............61   W  AT 12:43 P.M.       
                   ASOS.................54   W  AT 12:43 P.M.        
                   DAVIS................57   W  AT 11:55 A.M.        
FASTEST MILE FOR YESTERDAY..............42   W  AT 11:56 A.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE...........41   W  AT  3:02 P.M.  
MAXIMUM 1-MINUTE DAVIS AVERAGE..........41   W  AT  2:35 P.M.  
AVERAGE WIND SPEED AND DIRECTION......27.5   W  
                    ASOS..............25.5      
                    DAVIS.............27.0   W  [279 deg] 
 
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..........1.74  DEPARTURE.....+0.69  
                         ASOS..............1.75    
TOTAL PRECIPITATION FOR THE YEAR...........7.46  DEPARTURE.....-2.43  
                         ASOS..............7.38
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.5
TOTAL SNOWFALL FOR THE MONTH................0.4  DEPARTURE......-2.6  
TOTAL SNOWFALL FOR THE SEASON..............14.3  DEPARTURE.....-34.1 
 
    
PRELIMINARY CLIMATE SUMMARY FOR MARCH 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
 
3/1  40/22/31/-1/0/0/512/76          24 NW   Aero 23 MPH NW
3/2  49/28/39/+7/1.74/0.4/000/00     48 E    Aero 45 MPH E
3/3  58/33/46/+14/0/0/489/72         44 WNW  Aero 43 MPH WNW
3/4  40/26/33/0/0/0/471/69           37 W
3/5  37/19/28/-5/T/T/.../..          58 W    Aero 57 MPH W 
3/6  19/3/11/-22/0/0/.../.. *        57 W    Aero 61 MPH W
 
3/7  morning low temp. of 2 deg; normal low now 25 deg.

* Record low maximum temperature of 19 on the 6th surpasses previous 21 set
in 1916.
* Record low minimum temperature of 3 on the 6th ties previous 3 set in 1948.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 7
HIGH 66 IN 1946
LOW -1 IN 1890
PRECIP 2.05 INS. IN 1967
SNOWFALL 11.1 INS. IN 1967
PEAK GUST 66 MPH NE IN 1962
 
RECORDS FOR MARCH 8
HIGH 63 IN 1942, 1995
LOW 2 IN 1986
PRECIP 1.73 INS. IN 1933
SNOWFALL 8.3 INS. IN 1941
PEAK GUST 68e MPH NE IN 1941
 
TODAY'S REPORT By: Stephanie Radner