BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 13, 2009   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
SUNSHINE BEGINS AFTER EARLY CLOUDS AND BREAKS
4-DAY STRETCH OF CLOUDY WET JUNE WEATHER
 
The sun finally began to shine early today
after three days of no sunshine and a fourth
day yesterday with just a little sunshine late
in the day.  Rain occurred on three out of
four of the gloomy days and ended with some
light showers yesterday afternoon.  A colorful 
rainbow appeared around this area as the
rain was ending by 6 p.m. and sun was beginning
to shine.
 
Today's observations:
 
7 A.M.  
Weather: Clear, few cumulus fractus, cumulus, distant
southeast thru southwest, few stratocumulus all quadrants,
few cirrus  
Temperature: 63F, Dew point: 57F, Wind: NNE at 9 kts
Wind: Direction variable NNW to ENE,
Wind: direction gradually veering 
Sea-level pressure: 29.95 inches Hg, falling
Visibility: 50 miles, 70 miles northwest  
6-hour minimum temp: 59F
24-hour rainfall: 0.05 in.
BHO SA 1155 CLR 50 143/63/57/0209/995/
FEW CUFRA/CU DSNT SSE-WSW FEW SC AND CI ALQDS
VSBY NW 70 WND 34V06 GRDLY VEERING/ 8/801 51020
ASOS 70004 MANUAL 70005 10063 20059  
 
10 A.M.  
Weather: Thin scattered cirrus, cumulus forming
Distant east-southeast thru southwest thru north,
Lower cirrus distant southwest thru northwest 
Temperature: 68F, Dew point: 54F, Wind: NNE at 8 kts,
Wind: Direction variable NNW to ENE
Sea-level pressure: 29.97 inches Hg, rising
Visibility: 60 miles, 70 miles to the northwest
BHO SA 1455 300 –SCT 60 150/68/54/0308/997/
CU FRMG DSNT ESE-SW-N LWR CI DSNT SW-NW
VSBY NW 70 WND 33V08/ 8/101 51007
 
WEATHER SUMMARY FOR FRIDAY, JUNE 12
 
TEMPERATURE (DEGREES F)
MAX.....70    NORMAL.....75
MIN.....53    NORMAL.....55
MEAN....62    NORMAL.....65
 
DEPARTURE FROM 30-YEAR NORMAL...........-3
TOTAL DEPARTURE FOR THE MONTH..........-35 [-3.1 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............3  DEPARTURE........0
TOTAL HEATING UNITS FOR THE MONTH............57  DEPARTURE......+12
TOTAL HEATING UNITS FOR THE SEASON.........6178  DEPARTURE.....-164
TOTAL HEATING UNITS LAST SEASON TO DATE....5928  DIFFERENCE....+250
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............30 SSE AT  7:34 A.M. *  
                   AEROVANE..............29 SSE AT  7:34 A.M. 
                   ASOS..................29 SSE AT  7:35 A.M.   
                   DAVIS.................29 SSW AT  7:40 A.M.     
FASTEST MILE FOR YESTERDAY...............21 S   AT  7:46 A.M. * 
MAXIMUM 2-MINUTE ASOS AVERAGE............22 S   AT  7:47 A.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE...........22 S   AT  7:47 A.M.    
AVERAGE WIND SPEED AND DIRECTION........8.6 S 
                   ASOS.................8.4
                   DAVIS................8.1 S [190 DEG]
* Last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.05  DEPARTURE....-0.08
                         ASOS..............0.04
TOTAL PRECIPITATION FOR  JUNE..............0.76  DEPARTURE....-0.80
                         ASOS..............0.74 
TOTAL PRECIPITATION FOR THE YEAR..........19.26  DEPARTURE....-4.04
                         ASOS.............20.29 
 
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/.../.../..        30 SSE    AERO 29 MPH SSE
 
6/13 our morning low temp: 59F; the normal low is now 55F
 
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 13
HIGH 93F IN 1988
LOW 43F IN 1982
PRECIP 6.07 INS 1998 [Record for month]
PEAK GUST 69 MPH N IN 1956
 
RECORDS FOR JUNE 14
HIGH 93F IN 1956
LOW 41F IN 1912
PRECIP 1.49 INS 1896
PEAK GUST 55 MPH WNW IN 1958
 
TODAY'S REPORT PREPARED BY: Robert Skilling