BLUE HILL METEOROLOGICAL OBSERVATORY 
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JUNE 12, 2011
ALL TIMES ARE IN EASTERN STANDARD TIME
 
A SECOND DAY OF LOW CLOUDS, FOG AND VERY
COOL TEMPERATURES FOR ALMOST MID-JUNE
GENEROUS AMOUNT OF RAINFALL PAST 24 HOURS
 
Feeling and looking a lot like yesterday's
cool and overcast, wet weather, today's
temperatures are even cooler barely out of the
low 50's by noon time.
Overnight the temperature dipped to 50 degrees
at midnight EST and then rose very slightly to
52F by 8 AM EDT this morning.
Rainfall overnight was moderate at times
and finally changed to light drizzle by mid-
morning  so the total since 8 AM EDT on
Saturday measured 1.34 inches bringing the storm
total to 1.39 inches.  
 
Today's observations:
 
7 A.M.  
Weather: Obscurement with heavy fog, light rain and
drizzle occurring 
Temperature: 51F, Dew point: 51F; Wind: NNE at 12G18 kts,
Wind: Direction variable NNW to NE
Sea-level pressure: 29.94 inches Hg, rising
Visibility: 1/8 variable to 1/16 in heavy fog, light rain
and drizzle 
6-hour min. temp: 50F
6-hour precip.: 0.53 in.
24-hour precip: 1.34 ins.
BHO SA 1155 W2 X 1/8VR-L-F 149/51/51/0212G18/994/
VSBY 1/8V1/16 WND 34V05/ 8//// 55005 ASOS 60053
MANUAL 6053/ ASOS 70134 MANUAL 70134 10052 20051
 
10 A.M.
Weather: Obscurement with light drizzle and
heavy fog, sky brightening
Temperature: 53F, Dew point: 53F; Wind: N at 11G18 kts,
Wind: Direction variable NNW to NE
Wind: Direction gradually backing
Sea-level pressure: 29.95 inches Hg, rising
Visibility: 1/8 variable 1/16 mile, light drizzle, heavy fog 
3-hour precip.: 0.04 inch
BHO SA 1455 W2 X 1/8VL-F 143/53/53/0111G18/995/ VSBY 1/8V1/16
SKY BRGHTNG WND GRDLY BACKING WND 34V04/ 8//// 55006 ASOS 60004
MANUAL 60004
 
WEATHER SUMMARY FOR SATURDAY, JUNE 11
 
TEMPERATURE (DEGREES F)
MAX.....60    NORMAL.....75  
MIN.....50    NORMAL.....55
MEAN....55    NORMAL.....65
 
DEPARTURE FROM 30-YEAR NORMAL..................-10
TOTAL DEPARTURE FOR THE MONTH..................+21 [+1.7 DEGREES/DAY]
 
HEATING DEGREE DAYS    
TOTAL HEATING UNITS FOR YESTERDAY............10    DEPARTURE.........+7
TOTAL HEATING UNITS FOR THE MONTH............36    DEPARTURE.........-6
TOTAL HEATING UNITS FOR THE SEASON.........6189    DEPARTURE.......-150
TOTAL HEATING UNITS LAST SEASON TO DATE....5669    DIFFERENCE......+520
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............28 NE  AT  1:15 P.M. 
                   AEROVANE...............30 ENE AT  1:15 P.M.  
                   ASOS...................25 ENE AT  1:16 P.M. 
                   DAVIS..................26 ENE AT  1:15 A.M.  
THE FASTEST MILE FOR YESTERDAY............19 EBE AT  1:16 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE.............20 ENE AT  1:17 P.M.   
MAXIMUM 2-MINUTE DAVIS AVERAGE............21 ENE AT  1:17 P.M.   
AVERAGE WIND SPEED AND DIRECTION........10.1 E  
                   ASOS..................9.3   
                   DAVIS.................9.5 E [80 deg]
 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.34  DEPARTURE........+1.21
                         ASOS..............1.34  
TOTAL PRECIPITATION FOR THE MONTH..........2.83  DEPARTURE........+1.40
                         ASOS..............2.80
TOTAL PRECIPITATION FOR THE YEAR..........25.02  DEPARTURE........+1.85
                        ASOS..............25.62**
**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/.../.../..         57 W    AERO 60 MPH W TSTM
6/10 74/60/67/+3/0.00/.../..         21 W
6/11 60/50/55/-10/..../000/00        28 ENE  Aero 30 MPH ENE
 
6/12 our morning low temp: 50F; the normal low is 55F  
 
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 12
HIGH 92F IN 1973
LOW 40F IN 1906
PRECIP 1.79 INS 1955
PEAK GUST 58 MPH NW IN 1991
 
RECORDS FOR JUNE 13
HIGH 93F IN 1988
LOW 43F IN 1982
PRECIP 6.07 INS 1998 [Record for month]
PEAK GUST 69 MPH N IN 1956
 
TODAY'S REPORT PREPARED BY: Robert Skilling/Chris Torchia