BLUE HILL METEOROLOGICAL OBSERVATORY 
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 16, 2011
ALL TIMES ARE IN EASTERN STANDARD TIME SU
 
TEMPERATURE RISES RAPIDLY TODAY TO THE 80'S
FIVE DAYS OF BELOW NORMAL TEMPS. ENDED YESTERDAY
JUNE TO TURN WARMER THAN NORMAL STARTING TODAY
 
Southwest winds have taken over today after six
days during which our prevailing wind directions were
from the north through east. Five consecutive days
during this period averaged cooler than normal
lowering the June temperature average to about one
degree below normal for the first half of the month.
 
Today's observations:
 
7 A.M.  
Weather: Sky clear, SKC (not a cloud to be seen)
Temperature: 62F, Dew point: 54F; Wind: SW at 9 kts,
Sea-level pressure: 29.90 inches Hg, rising
Visibility: 35 miles, distant haze
24-hour precip: 0.00 in.
6-hour min. temp: 55F
BHO SA 1155 CLR 35 125/62/54/2309/990/SKC/
DSNT HZ/ 53005 10062 20055
 
10 A.M.
Weather: Clear, few thin cirrus 
Temperature: 76F, Dew point: 61F; Wind: SSW at 9 kts,
Sea-level pressure: 29.91 inches Hg, rising
Visibility: 20 miles, hazy, haze increasing  
BHO SA 1455 CLR 20 128/76/61/2109/991/
FEW THN CI AT 300 HAZY HZ INCR/ 8/001 53003
 
1 P.M.
Weather: Thin scattered cirrus, few small cumulus,
few moderate cumulus forming NW-NNE
Temperature: 84F, Dew point: 58F; Wind: WSW at 11 kts,
Wind: Direction variable S-W 
Sea-level pressure: 29.88 inches Hg, falling slightly
Visibility: 25 miles, hazy   
6-hour max. temp: 84F
BHO SA 1755 300 –SCT 25 119/84/58/2411/988/
FEW SML CU/FEW MDT FRMG NW-NNE HAZY WND 19V27/
8/201 58009 10084 20062
 
WEATHER SUMMARY FOR WEDNESDAY, JUNE 15
 
TEMPERATURE (DEGREES F)
MAX.....70    NORMAL.....75  
MIN.....51    NORMAL.....56
MEAN....61    NORMAL.....66
 
DEPARTURE FROM 30-YEAR NORMAL...................-5
TOTAL DEPARTURE FOR THE MONTH..................-14 [-1.1 DEGREES/DAY]
 
HEATING DEGREE DAYS    
TOTAL HEATING UNITS FOR YESTERDAY.............4    DEPARTURE.........+2
TOTAL HEATING UNITS FOR THE MONTH............70    DEPARTURE........+18
TOTAL HEATING UNITS FOR THE SEASON.........6223    DEPARTURE.......-126
TOTAL HEATING UNITS LAST SEASON TO DATE....5678    DIFFERENCE......+545
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............27 N   AT  8:29 A.M.  
                   AEROVANE...............27 N   AT  8:29 A.M. 
                   ASOS...................24 ENE AT  2:50 P.M. 
                   DAVIS..................24 N   AT  8:29 A.M. 
THE FASTEST MILE FOR YESTERDAY............17 ENE AT  2:43 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE.............17 ENE AT  2:44 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE............18 NNW AT  2:44 P.M.  
AVERAGE WIND SPEED AND DIRECTION........10.2 NE  
                   ASOS..................9.6   
                   DAVIS.................9.8 N [355 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE........-0.14
                         ASOS..............0.00  
TOTAL PRECIPITATION FOR THE MONTH..........2.99  DEPARTURE........+1.03
                         ASOS..............2.97
TOTAL PRECIPITATION FOR THE YEAR..........25.18  DEPARTURE........+1.48
                        ASOS..............25.79**
**ASOS data is in error due to system failure on 1/12-13   
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2011 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
6/1  80/60/70/+8/0.64/425/47         39 S    AERO 44 MPH S TSTM
6/2  72/52/62/0/0.00/697/77          50 WSW  AERO 54 MPH WSW
6/3  69/48/59/-3/0.00/870/96         36 W    AERO 39 MPH WNW
6/4  64/46/55/-8/0.00/881/97         27 NE  
6/5  70/46/58/-5/0.00/854/94         20 N
6/6  75/54/65/+2/0.00/801/88         17 SSE
6/7  85/59/72/+8/0.00/865/95         22 NW
6/8  90/64/77/+13/0.00/756/83        32 SW   TSTM (no rain)
6/9  88/65/77/+13/0.84/347/38        57 W    AERO 60 MPH W TSTM
6/10 74/60/67/+3/0.00/694/76         21 W
6/11 60/50/55/-10/0.83/000/00        28 ENE  AERO 30 MPH ENE
6/12 55/50/53/-12/0.56/000/00        29 N
6/13 64/51/58/-7/0.08/220/24         17 NNE
6/14 56/51/54/-11/0.04/000/00        28 NNW
6/15 70/51/61/-5/T/.../..            27 N    
 
6/16 morning low temp: 55F; the normal low is 56F  
 
DAILY RECORDS FOR JUNE 2011
None so far...
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 16
HIGH 92F IN 1891, 1967
LOW 44F IN 1926
PRECIP 2.17 INS IN 1931
PEAK GUST 55 MPH W IN 1958
 
RECORDS FOR JUNE 17
HIGH 93F IN 1894
LOW 44F IN 1920
PRECIP 2.79 INS 2001 (Sub-Tropical storm ALLISON)
PEAK GUST 55e MPH S IN 1977
 
PREPARED BY: Robert Skilling/George Tabeek