BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JUNE 15, 2009   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
VERY CLOUDY AND VERY COOL JUNE CONTINUES
FREQUENT RAINFALL BUT OUR TOTAL STILL
REMAINS WELL BELOW THE NORMAL TO DATE  
 
The cloudy, cool and damp weather which has
been such a stubborn feature of this month's
weather continued today with temperatures which
are struggling up to 60 degrees early this
afternoon.  If no sunshine appears today
we'll have just 32% of possible for the first
half of the month, well below par of 55% for
the month of June.  Temperatures are continuing
a downward trend when compared to the average
and will surpass 3 degrees below normal with
today's very cool weather. 
Rainfall has been observed on 10 out of 15
days but the monthly total remains below normal
with 1.1 inches; the normal is near 2 inches.
 
Today's observations:
 
7 A.M.  
Weather: Low overcast stratus, bright spots in the
low overcast overhead thru north thru east and the
disc of the sun was briefly visible 
Temperature: 56F, Dew point: 53F, Wind: E at 4 kts
Sea-level pressure: 30.11 inches Hg, rising
Visibility: 20 miles 
6-hour minimum temp: 53F
24-hour rainfall: 0.14 inch
BHO SA 1155 E4 OVC 20 196/56/53/0904/011/
BRGHT SPTS IOVC OVHD-N-E SUN DSC BRFLY VSB/
8/6// 51019 ASOS 70019 MANUAL 70014 10056 20053   
 
10 A.M.  
Weather: Broken low stratus, overcast altocumulus,
rain showers southwest through northwest vicinity of
station   
Temperature: 58F, Dew point: 55F, Wind: N at 5 kts
Sea-level pressure: 30.11 inches Hg, rising
Visibility: 20 miles, SW-W 10 NW 8 N 15 miles 
BHO SA 1455 E10 BKN 65 OVC 20 198/58/55/0105/011/
PCPN/RW VCTY STN SW-NW VSBY SW-W 10 NW 8 N 15/
8/77/ 52002  
 
1 P.M.  
Weather: Overcast altocumulus, few stratus, break
in overcast east  
Temperature: 59F, Dew point: 56F, Wind: NE at 5 kts
Sea-level pressure: 30.11 inches Hg, steady
Visibility: 20 miles, 30 SE-S
6-hourly max. temp: 60F
6-hourly rainfall: 0.01 inch
BHO SA 1755 E70 OVC 20 195/59/56/0405/011/
FEW STRA BINOVC E VSBY SE-S 30/ 8/67/ 56003
MANUAL 6001/ 10060 20056
 
WEATHER SUMMARY FOR SUNDAY, JUNE 14
 
TEMPERATURE (DEGREES F)
MAX.....63    NORMAL.....75
MIN.....54    NORMAL.....56
MEAN....59    NORMAL.....65
 
DEPARTURE FROM 30-YEAR NORMAL...........-6
TOTAL DEPARTURE FOR THE MONTH..........-39 [-3.0 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............6  DEPARTURE.......+4
TOTAL HEATING UNITS FOR THE MONTH............63  DEPARTURE......+13
TOTAL HEATING UNITS FOR THE SEASON.........6184  DEPARTURE.....-163
TOTAL HEATING UNITS LAST SEASON TO DATE....5928  DIFFERENCE....+256
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............20 E   AT 5:37 P.M. *  
                   AEROVANE..............17 E   AT 5:37 P.M.  
                   ASOS..................18 E   AT 5:38 P.M.    
                   DAVIS.................18 E   AT 5:37 P.M.      
FASTEST MILE FOR YESTERDAY...............13 E   AT 5:36 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE............13 E   AT 5:45 P.M.     
MAXIMUM 2-MINUTE DAVIS AVERAGE...........13 E   AT 5:35 P.M.     
AVERAGE WIND SPEED AND DIRECTION........6.8 E
                   ASOS.................6.3
                   DAVIS................6.6 ESE [120 DEG]
* Last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.14  DEPARTURE....+0.07
                         ASOS..............0.19
TOTAL PRECIPITATION FOR  JUNE..............1.10  DEPARTURE....-0.72
                         ASOS..............1.10 
TOTAL PRECIPITATION FOR THE YEAR..........19.60  DEPARTURE....-3.96
                         ASOS.............20.59 
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2009 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/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  69/41/55/-7/0/706/78          29 SSW    AERO 25 MPH SSW
6/2  76/53/65/+3/T/525/58          28 S      AERO 24 MPH S
6/3  69/54/62/0/T/254/28           23 SSW    
6/4  73/53/63/0/0/327/36           22 SSE    
6/5  64/51/58/-5/0.05/000/00       21 NE
6/6  73/51/62/-1/0.01/428/47       25 SSE
6/7  79/56/68/+4/0/583/64          28 W      AERO 24 MPH W
6/8  73/57/65/+1/0/529/58          18 ENE
6/9  59/51/55/-9/0.10/000/00       27 E
6/10 59/52/56/-8/.../000/00        21 NE     AERO 18 MPH NE
6/11 57/52/55/-10/.../000/00       23 NNE    AERO 21 MPH NE
6/12 70/53/62/-3/.../119/13        30 SSE    AERO 29 MPH SSE
6/13 75/59/67/+2/0/796/87          23 NNE
6/14 63/54/59/-6/0.34/101/11       20 E
 
6/15 our morning low temp: 53F; the normal low is now 56F
 
NEW DAILY RECORDS FOR JUNE 2009 TO DATE...
None
 
DAILY EXTREMES
 
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 15
HIGH 94F IN 1988
LOW 42F IN 1959, 1978
PRECIP 2.04 INS IN 1903
PEAK GUST 52 MPH SW IN 1972
 
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
 
TODAY'S REPORT PREPARED BY: Robert Skilling