BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JUNE 10, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
 
DAILY AVERAGE TEMPERATURE FINISHES ABOVE NORMAL
YESTERDAY FOR FIRST TIME THIS MONTH
 
WARM AND DRY WITH MOSTLY CLEAR SKIES
 
Yesterday marked the first day this month that the daily average temperature
finished above normal. Warm temperatures and low humidity provided for a
very pleasant June afternoon. Skies have been mostly sunny with low cirrus
and altocumulus clouds passing over the summit. There was a shallow
temperature inversion this morning with a very defined smoke layer below it.
Winds have been mainly out of the NE-E but have been rather light and
variable at times.
 
Temperatures for this week are expected to be in the mid to upper 70s with
a chance of showers Tuesday and Wednesday as a cold front sweeps through.
 
Today's observations:
 
7 A.M.
Weather: Clear, few altocumulus/altocumulus standing lenticularis all
quadrants, few dense cirrus E-SSE, shallow smoke layer below inversion all
quadrants except NE-SE, hazy
Temperature: 69F, Dew Point: 49F; Wind: NE at 8 kts
Sea-level pressure: 30.07 inches Hg, increasing steadily
Visibility: 55 miles, hazy
6-hour min. temp: 60F
BHO SA 1155 CLR 55 183/69/49/0408/007/ FEW AC/ACSL ALQDS FEW DNS CI E-SSE
SHLW K LYR BLO INVSN ALQDS XCPT NE-SE HAZY/ 8/042 52020 10069 20060
 
10 A.M.
Weather: Clear, few small cumulus forming distant WSW-W, few altocumulus/
altocumulus lenticularis all quadrants except E, few dense cirrus S-WSW and
NW-NE, hazy
Temperature: 76F, Dew Point: 47F; Wind: E at 5 kts,
Wind: Direction variable NE-SSW
Sea-level pressure: 30.10 inches Hg, increasing then decreasing 
Visibility: 65 miles, hazy
BHO SA 1455 CLR 65 193/76/47/0805/010/ FEW SM CU FRMNG DSNT WSW-W FEW AC/ACSL
ALQDS XCPT E FEW DNS CI S-WSW AND NW-NE HAZY WND 05V20/ 8/142 51010
 
1 P.M.
Weather: Clear, few cumulus WSW-NW, few altocumulus cumulogenitus SSE-NW, few
thin cirrus SE-W-NE, hazy
Temperature: 77F, Dew Point: 46F; Wind: ENE at 10 kts,
Wind: Direction variable NNE-E
Sea-level pressure: 30.11 inches Hg, increasing then decreasing 
Visibility: 60 miles, hazy
6-hour max. temp: 78F
BHO SA 1755 CLR 60 196/77/46/0710/011/ FEW CU WSW-NW FEW ACCU SSE-NW FEW THN
CI SE-W-NE HAZY WND 02V09/ 8/161 51003 10078 20069
 
 
WEATHER SUMMARY FOR SATURDAY, JUNE 9
 
TEMPERATURE (DEGREES F)
MAX.....76    NORMAL.....73
MIN.....56    NORMAL.....55
MEAN....66    NORMAL.....64
 
DEPARTURE FROM 30-YEAR NORMAL.......................+2
TOTAL DEPARTURE FOR THE MONTH......................-47 [-5.4 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-3
TOTAL HEATING UNITS FOR THE MONTH..............66   DEPARTURE.........+30
TOTAL HEATING UNITS FOR THE SEASON...........4954   DEPARTURE.......-1379
TOTAL HEATING UNITS LAST SEASON TO DATE......6179   DIFFERENCE......-1225
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............25 WNW AT 12:13 A.M.
                   AERO..................24 WNW AT 12:15 A.M. *  
                   ASOS..................23 WSW AT  3:50 P.M.  
                   DAVIS.................22 W   AT TIME UNKNOWN
THE FASTEST MILE FOR YESTERDAY...........18 WNW AT 12:15 A.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE............16 WSW AT  3:51 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE...........15 WSW AT TIME UNKNOWN 
AVERAGE WIND SPEED AND DIRECTION........TBD S
                   ASOS.................9.9
                   DAVIS................9.1 W [282 deg.]
* Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE...........-0.16
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.93  DEPARTURE...........+0.43
                         ASOS..............1.87
TOTAL PRECIPITATION FOR THE YEAR..........15.17  DEPARTURE...........-8.99
                         ASOS.............15.12
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2012 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
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
6/1  67/53/60/-2/0.00/.../..        28 ENE AERO 28 MPH ENE RMY 29
6/2  63/52/58/-4/0.80/.../..        39 SE  AERO 39 MPH SE  RMY 40
6/3  62/50/56/-6/0.01/.../..        31 N   AERO 28 MPH N   RMY 29
6/4  50/47/49/-14/..../000/00       44 NNE AERO 43 MPH NNE RMY 43
6/5  54/47/51/-12/..../.../..       23 NNE AERO 18 MPH NNE RMY N/A
6/6  63/48/56/-7/0.01/.../..        16 ENE AERO 14 MPH ENE RMY 15
6/7  70/50/60/-4/0.27/.../..        31 NE  AERO 31 MPH NE  RMY 32  TSTM
6/8  76/51/64/0/0.03/.../..         25 WSW AERO 25 MPH WNW RMY 26  TSTM
6/9  76/56/66/+2/0.00/.../..        25 WNW AERO 24 MPH WNW RMY 24
 
6/10  morning low temp: 60F; the normal low is now 56F
 
DAILY RECORDS FOR JUNE 2012
6/4 - NEW DAILY RECORD LOW MAXIMUM TEMP OF 50F;
surpasses the previous record of 51F in 1891.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 10
HIGH 98F IN 2008
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: George Tabeek