BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JUNE 10, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
PARTLY SUNNY AND COOL TODAY
 
Clouds cleared away early this morning from the northeast 
and at least partial sunshine is allowing temperatures to 
rise into the 60's after a very cool daytime high of only 
59 degrees.  
Precipitation yesterday was very light with just 0.02 inch 
mostly in the form of light drizzle.  All of the heavy 
showers remained to our west where rainfall reached one to 
two inches between here and Worcester. 
 
Today's observations:
 
7 A.M.   
Weather: Scattered high thin cirrus clouds
Stratus NE-SE-SW Altocumulus castellanus distant WNW   
Temperature: 57F, Dew point: 52F, Wind: NE at 09 kts 
Wind: gradually veering, variability N-E  
Sea-level pressure: 30.08 inches Hg, rising 
Visibility: 15 miles, N-NE 20 miles, thin fog       
6-hour min temp. 50F   
24-hour precip: 0.02 in. 
BHO SA 1155 250 –SCT 300 –SCT 15 186/57/52/0509/008/
STRA NE-SE-S-SW AND SC/STRA DSNT SW-W 
ACC DSNT WNW VSBY NE-NE 20 WND GRDLY VEERING 
WND 01V08/ 8/681 51016 MANUAL 70002 ASOS 70002 10057 20050 
    
10 A.M. 
Weather: Broken clouds  
Temperature: 63F, Dew point: 52F, Wind: NE at 12 kts 
Wind: variability NNE-E 
Sea-level pressure: 30.09 inches Hg, steady
Visibility: 40 miles, 45 WNW  
BHO SA 1455 E34 BKN 250 BKN 40 188/63/52/0512/009/ 
CU/MDT CU XTDNG SE-SW-N FEW SCSL ALQDS VSBY WNW 45 WND 02V10/ 
8/801 50002
 
WEATHER SUMMARY FOR SATURDAY, JUNE 9 
 
TEMPERATURE (DEGREES F)
MAX.....63    NORMAL.....74 
MIN.....54    NORMAL.....54
MEAN....59    NORMAL.....64
DEPARTURE FROM 30-YEAR NORMAL...........-5
TOTAL DEPARTURE FOR THE MONTH...........+9 (+0.8 DEGREES/DAY)
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............6  DEPARTURE.........+3
TOTAL HEATING UNITS FOR THE MONTH...........33  DEPARTURE.........-3  
TOTAL HEATING UNITS FOR THE SEASON........5864  DEPARTURE.......-469
TOTAL HEATING UNITS LAST SEASON TO DATE...5774  DIFFERENCE.......+90 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............18 ENE AT 11:46 A.M.  
                   AEROVANE.............15 ENE AT 11:46 A.M.  
                   ASOS.................N/A  #
                   DAVIS................17 ENE AT 11:46 A.M.  
FASTEST MILE FOR YESTERDAY..............13 ENE AT 11:52 A.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE...........N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE..........13 ENE AT 11:54 A.M.  
AVERAGE WIND SPEED AND DIRECTION....... 7.2 NE
                   ASOS.................N/A  #
                   DAVIS................6.9 NE [040 deg] 
 
# ASOS WINDS SWITCHED OFF BY NWS 6/6, IT IS NOT KNOWN WHEN 
THAT DATA WILL RESUME
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.02  DEPARTURE.....-0.11
                         ASOS..............0.02  
TOTAL PRECIPITATION FOR THE MONTH..........1.83  DEPARTURE.....+0.66 
                         ASOS..............1.85    
TOTAL PRECIPITATION FOR THE YEAR..........25.99  DEPARTURE.....+3.08
                         ASOS.............25.49   
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2007......CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
6/1  87/56/72/+10/0.12/.../..       45 NNW  Aero 44 MPH TSTM AM/PM
6/2  87/64/76/+14/0.01/.../..       23 SSE  TSTM PM    
6/3  68/50/59/-3/0.14/000/000       24 NNE  TSTM AM (no rain)
6/4  63/50/57/-6/1.52/000/00        35 NE   TSTM 10:15-10:50 A.M. 
6/5  78/57/68/+5/0.01/.../..        38 S   
6/6  70/49/60/-3/0/.../..           35 W   
6/7  69/44/57/-7/0/.../..           23 W
6/8  78/58/68/+4/0/.../..           20 WSW
6/9  63/54/59/-5/0.02/000/00        18 ENE
 
6/10 morning low temp. 50 deg; normal now 54 deg.  
 
      NEW DAILY RECORDS FOR JUNE: 
 
6/4 - NEW RECORD DAILY RAINFALL OF 1.52 INS; THE PREVIOUS 
      RECORD WAS 1.29 INS. IN 1898.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 10
HIGH 92F IN 1967,1974,1984
LOW 42F IN 1913,1920
PRECIP 2.51 INCHES IN 1931
PEAK GUST 60e MPH NW IN 1941
 
RECORDS FOR JUNE 11
HIGH 92F IN 1973,1984,1997
LOW 40F IN 1972
PRECIP 2.66 INS 1922
PEAK GUST 43e MPH S IN 1945
 
TODAY'S REPORT PREPARED By: Robert Skilling