BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, MARCH 1, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Clear 
Temperature: 23F, Dew point: 3F, Wind: NW at 10 kts 
Sea-level pressure: 30.19 inches Hg, rising 
Visibility: 70 miles   
6-hourly min. temp. 22 deg. 
Snow depth: 1 inch
BHO SA 1155 CLR 70 224/23/3/3210/019/ FEW SC DSNT N-E FEW CI N/ 
8/501 4/001 51017 10029 20022
  
10 A.M.    
Weather: Clear
Temperature: 30F, Dew point: 4F, Wind: NW at 04 kts  
Sea-level pressure: 30.20 inches Hg, rising 
Visibility: 70 miles 
BHO SA 1455 CLR 70 227/30/4/3204/020/ FEW SC DSNT S-W FEW CI NE/ 
8/501 50003
 
1 P.M.    
Weather: Thin broken cirrus, few altocumulus  
Temperature: 39F, Dew point: 4F, Wind: SSW at 06 kts  
Sea-level pressure: 30.16 inches Hg, falling  
Visibility: 80 miles   
BHO SA 1755 250 –BKN 80 213/39/4/2106/016/ FEW AC/ACSL DSNT SSE-W 
WND L/V/ 8/045 56014 10039 20023
  
WEATHER SUMMARY FOR WEDNESDAY, FEBRUARY 28
 
TEMPERATURE (DEGREES F)
MAX.....43    NORMAL.....40 
MIN.....28    NORMAL.....23
MEAN....36    NORMAL.....31                     
 
DEPARTURE FROM 30-YEAR NORMAL..........+5
TOTAL DEPARTURE FOR THE MONTH........-119 (-4.1 DEGREES/DAY) 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........29   DEPARTURE........-5
TOTAL HEATING UNITS FOR THE MONTH........1147   DEPARTURE......+113 
TOTAL HEATING UNITS FOR THE SEASON.......4091   DEPARTURE......-479
TOTAL HEATING UNITS LAST SEASON TO DATE..4094   DIFFERENCE.......-3
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............20 W   AT  4:25 P.M.      
                   AEROVANE.............18 W   AT  8:36 P.M.      
                   ASOS.................17 WNW AT  8:53 P.M.       
                   DAVIS................20 W   AT  8:38 P.M.        
FASTEST MILE FOR YESTERDAY..............13 WNW AT  9:08 P.M. *    
MAXIMUM 2-MINUTE ASOS AVERAGE...........15 W   AT  8:38 P.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE..........14 WNW AT  9:49 P.M.      
AVERAGE WIND SPEED AND DIRECTION...... 8.0 W  
                    ASOS.............. 8.4      
                    DAVIS............. 8.5 W [275 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..........2.78  DEPARTURE....-1.28  
                         ASOS..............2.76    
TOTAL PRECIPITATION FOR THE YEAR...........5.72  DEPARTURE....-3.12  
                         ASOS..............5.63
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.5
TOTAL SNOWFALL FOR THE MONTH................7.3  DEPARTURE......-8.7  
TOTAL SNOWFALL FOR THE SEASON..............13.9  DEPARTURE.....-31.5 
 
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/+2/0/0/126/21         37 S    Aero 34 MPH S
2/2  35/28/32/+6/0.18/0.3/000/00    20 NW
2/3  32/19/26/0/0.05/0.4/574/95     39 W    Aero 47 MPH W  
2/4  22/10/16/-10/0/0/601/99        39 WSW  Aero 40 MPH WSW
2/5  16/5/11/-16/0/0/493/81         61 W    Aero 60 MPH W  
2/6  24/10/17/-10/0/0/593/97        38 W    Aero 36 MPH W 
2/7  21/8/15/-12/0/0/474/77         43 W    Aero 41 MPH W
2/8  25/11/18/-9/0/0/370/60         48 WSW
2/9  26/15/21/-6/0/0/600/97         44 WSW  Aero 42 MPH WSW
2/10 32/13/23/-4/0/0/199/32         28 W     
2/11 31/14/23/-4/0/0/456/73         27 SSW  
2/12 36/20/28/0/0/0/602/96          43 WSW  Aero 40 MPH W  
2/13 22/6/14/-14/0.02/0.2/226/36    28 NW   
2/14 36/13/25/-3/2.09/1.4/000/00    47 NE   Aero 52 MPH NE
2/15 21/9/15/-13/0/0/616/97         46 W    Aero 53 MPH W
2/16 27/9/18/-10/0/0/624/98         51 W    Aero 49 MPH W
2/17 34/17/26/-3/0/0/596/93         42 W
2/18 33/16/25/-4/0/0/289/45         38 WNW  Aero 40 MPH WNW  
2/19 20/5/13/-16/0/0/646/100        46 WNW  Aero 51 MPH WNW 
2/20 48/17/33/+4/T/0/266/41         35 SSW  Aero 34 MPH SSW  
2/21 44/30/37/+8/0.01/0/606/93      29 W     
2/22 39/28/34/+4/0.02/0.2/007/01    22 SSE   
2/23 32/14/23/-7/0.10/1.3/466/71    55 WNW  Aero 56 MPH WNW
2/24 33/11/22/-8/0/0/652/99         40 WNW  Aero 43 MPH WNW 
2/25 41/19/30/-1/0/0/617/93         22 WNW  
2/26 33/28/31/0/0.31/3.5/000/00     23 NNE 
2/27 39/27/33/+2/T/T/147/22         14 SSW 
2/28 43/28/36/+5/0/0/.../..         20 W    Aero 18 MPH W
      
3/1 morning low temp. 22 deg; normal now 24 deg. 
   
2/14 - NEW RECORD DAILY PRECIPITATION OF 2.09 INCHES;  
     the previous record was 1.95 inches in 1940.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 1
HIGH 62 IN 1972
LOW -3 IN 1886
PRECIP 1.65 INS. IN 1900
SNOWFALL 9.4 INS. IN 1949
PEAK GUST 78 WSW IN 1966
 
RECORDS FOR MARCH 2
HIGH 63 IN 2004
LOW -3 IN 1886
PRE 2.15 INS. IN 1983
SNOW 7.1 INS. IN 1948
WIND 75 MPH NW IN 1966
 
TODAY'S REPORT By: Stephanie Radner