BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JUNE 17, 2012 FATHER'S DAY
ALL TIMES ARE IN EASTERN STANDARD TIME
 
CONTINUED ONSHORE FLOW BRINGS CLOUDY AND COOL
WEATHER ALONG COAST WITH MID AFTERNOON CLEARING...
HAZY, HOT, AND HUMID CONDITIONS ON ITS WAY...
 
A continued cool, marine, northeast wind has resulted in mostly cloudy skies
for most of today but has recently become partly cloudy. Temperatures have
been in the low to mid 60s for most of the day. The overnight low temperature
recorded at the station was an unseasonable 51F. Winds from the northeast have
been weak, resulting in slightly higher temperatures than if we had stronger
gusts coming off the water. Humidity values have been in the high 50s to low 60s
with the northeast flow.
 
This cooler weather will end beginning tomorrow as the Bermuda High begins to
make its presence known. Predominant southerly flow from this system will
bring not only hot temperatures, but high humidity values as well. For the
next few days, hazy, hot, and humid conditions will be expected for most of
the northeast. Temperatures are forecast to be in the mid 80s to low 90s!.
 
 
Today's observations:
 
7 A.M.
Weather: Broken stratocumulus, few moderate cumulus all quadrants, crepuscular
rays E-SE, hazy
Temperature: 56F, Dew Point: 52F; Wind: NE at 6 kts,
Wind: Light and variable
Sea-level pressure: 30.27 inches Hg, rising 
Visibility: 35 miles, N-ENE 25, hazy
6-hour min. temp: 51F
BHO SA 1155 E15 BKN 35 252/56/52/0506/027/ FEW MDT CU ALQDS CREPUSCULAR RAYS
E-SE HAZY VSBY LWR N-ENE 25 WND L/V/ 8/600 51003 10056 20051
 
10 A.M.
Weather: Broken stratocumulus, few moderate cumulus all quadrants, hazy
Temperature: 62F, Dew Point: 52F; Wind: E at 10 kts,
Wind: Direction variable NE-ESE
Sea-level pressure: 30.26 inches Hg, falling
Visibility: 40 miles, WSW-NW 30, hazy
BHO SA 1455 E15 BKN 40 248/62/52/0810/026/ FEW MDT CU ALQDS HAZY VSBY LWR
WSW-NW 30 WND 04V12/ 8/600 58004
 
1 P.M.
Weather: Scattered cumulus, few lower dense cirrus N-E, few cumulus fractus
all quadrants except N-E, clear overhead, distant haze
Temperature: 65F, Dew Point: 53F; Wind: ENE at 11 kts,
Wind: Direction variable N-E    
Sea-level pressure: 30.22 inches Hg, falling
Visibility: 40 miles, distant haze
6-hour max. temp: 65F
6-hour min. temp: 56F
BHO SA 1755 15 SCT 250 SCT 40 232/65/53/0611/022/ FEW CU/CUFRA ALQDS XCPT N-E
FEW DNS CI NNE-NE CLR OVD DSNT HZ WND 36V09/ 8/202 58016 10065 20056
 
 
WEATHER SUMMARY FOR SATURDAY, JUNE 16
 
TEMPERATURE (DEGREES F)
MAX.....64    NORMAL.....75
MIN.....51    NORMAL.....57
MEAN....58    NORMAL.....66
 
DEPARTURE FROM 30-YEAR NORMAL.......................-8
TOTAL DEPARTURE FOR THE MONTH......................-62 [-4.1 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...............7   DEPARTURE..........+5
TOTAL HEATING UNITS FOR THE MONTH..............81   DEPARTURE.........+27
TOTAL HEATING UNITS FOR THE SEASON...........4969   DEPARTURE.......-1382
TOTAL HEATING UNITS LAST SEASON TO DATE......6223   DIFFERENCE......-1254
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............28 NE  AT  11:04 A.M. *
                   AERO..................24 NE  AT  11:04 A.M. *
                   ASOS..................29 ENE AT   8:08 A.M.
                   DAVIS.................26 ENE AT   8:08 A.M. RMY 27
THE FASTEST MILE FOR YESTERDAY...........21 NE  AT  11:04 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............20 ENE AT  11:03 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........19 ENE AT  11:04 A.M.
AVERAGE WIND SPEED AND DIRECTION.......10.5 NE
                   ASOS................10.4
                   DAVIS................9.5 NE [044 deg.]
*...Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....Trace  DEPARTURE...........-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........2.55   DEPARTURE...........-0.03
                         ASOS..............2.47
TOTAL PRECIPITATION FOR THE YEAR..........15.79   DEPARTURE...........-9.45
                         ASOS.............15.72
 
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/-2/0.00/742/82        28 ENE AERO 28 MPH ENE RMY 29
6/2  63/52/58/-4/0.80/000/00        39 SE  AERO 39 MPH SE  RMY 40
6/3  62/50/56/-6/0.01/082/09        31 N   AERO 28 MPH N   RMY 29
6/4  50/47/49/-14/0.58/000/00       44 NNE AERO 43 MPH NNE RMY 43
6/5  54/47/51/-12/0.23/009/01       23 NNE AERO 18 MPH NNE RMY N/A
6/6  63/48/56/-7/0.01/310/34        16 ENE AERO 14 MPH ENE RMY 15
6/7  70/50/60/-4/0.27/328/36        31 NE  AERO 31 MPH NE  RMY 32 TSTM,1/8" HAIL
6/8  76/51/64/0/0.03/502/55         25 WSW AERO 25 MPH WNW RMY 26 TSTM
6/9  76/56/66/+2/T/822/90           25 WNW AERO 24 MPH WNW RMY 24
6/10 78/56/67/+2/0.00/868/95        21 E   AERO 18 MPH E   RMY 18
6/11 76/55/66/+1/0.00/.../..        23 S   AERO 21 MPH S   RMY 22
6/12 73/57/65/0/0.03/.../..         29 S   AERO 29 MPH S   RMY 30
6/13 63/60/62/-3/0.59/000/00        25 S   AERO 23 MPH S   RMY N/A
6/14 69/58/64/-2/0.00/.../..        32 NNE AERO 29 MPH NE  RMY 31
6/15 68/54/61/-5/0.00/.../..        28 ENE AERO 24 MPH ENE RMY 25
6/16 64/51/58/-8/T/.../..           28 NE  AERO 24 MPH NE  RMY 27
 
6/17  morning low temp: 51F; the normal low is now 58F
 
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 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
 
RECORDS FOR JUNE 18
HIGH 93F IN 1929,1994
LOW 39F IN 1920
PRECIP 3.36 INS 1998
PEAK GUST 48e MPH W IN 1943
 
TODAY'S REPORT PREPARED BY: George Tabeek