BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
SUNDAY, JUNE 16, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
 
WSW WINDS BRING GATHERING CLOUDS, PERSISTANT HAZE
 
Temperatures started in the upper 50s and increased fairly steadily all
morning, but weakened and stabilized with increasing cloud cover as the day
progressed. A fairly consistent 10 kt SW wind was ever-present today, and we
saw humidity slowly increase. A few showers showed on radar as they passed
nearby throughout the day but none hit us here at Great Blue Hill. 
 
BHO Wettest Junes, inches (1886-2013)
 
1) 17.32 in 1998
2) 13.73 in 1982
3) 12.31 in 2006
4) 10.78 in 1922
5)  9.25 in 2013 (through 6/15)
6)  9.03 in 1938
7)  8.77 in 1931
8)  8.64 in 1920
9)  8.02 in 1959
10) 7.45 in 2000
 
Today's Observations:
 
7 A.M.
Weather: Few altocumulus and cirrus overhead, altocumulus/altostratus
layer distant WNW-NNE, altostratus distant offshore NNE-ENE and E-ESE,
cirrus distant ESE-S-W
Temperature: 61F; Dew Point: 48F; Wind: W at 10 kts
Sea-level pressure: 29.97 ins. Hg, rising
Visibility: 45 miles, hazy
6-hr max. temp: 61
6-hr min. temp: 56
BHO SA 1155 CLR 45 149/61/48/2710/997/ FEW AC OVHD FEW CI OVHD
AC/AS DSNT WNW-NNE AS DSNT OFSHR NNE-ENE AND E-ESE CI DSNT ESE-S-W
HAZY/ 8/051 52006 10061 20056
 
10 A.M.
Weather: Broken altocumulus, high cirrus distant NW-ENE
Temperature: 73F; Dew Point: 52F; Wind: SW at 10 kts,
Sea-level pressure: 29.93 ins. Hg, rising then falling
Visibility: 40 miles, hazy
BHO SA 1455 150 BKN 40 136/73/52/2410/993/ DSNT HI CI NW-ENE HAZY/
8/065 58013
 
1 P.M.
Weather: Overcast altocumulus, moderate cumulus forming distant WSW
Temperature: 73F; Dew Point: 55F; Wind: SW at 10 kts,
Sea-level pressure: 29.88 ins. Hg,
Visibility: 45 miles, hazy
6-hr max. temp: 73F
6-hr min. temp: 61F
BHO SA 1755 110 BKN 45 117/73/55/2210/988/ MOD CU DSNT WSW HAZY/
8/05/ 58019 10073 20061
 
 
WEATHER SUMMARY FOR SATURDAY, JUNE 15, 2013
 
TEMPERATURE (DEGREES F)
MAX.....77     NORMAL.....75
MIN.....56     NORMAL.....57
MEAN....67     NORMAL.....66
 
DEPARTURE FROM 30-YEAR NORMAL....................+1
TOTAL DEPARTURE FOR THE MONTH....................+3 [0.0 DEGREES/DAY]
 
HEATING DEGREE DAYS 
TOTAL HEATING UNITS FOR YESTERDAY..............0   DEPARTURE..........-2
TOTAL HEATING UNITS FOR THE MONTH.............44   DEPARTURE..........-9
TOTAL HEATING UNITS FOR THE SEASON..........5778   DEPARTURE........-578
TOTAL HEATING UNITS LAST SEASON TO DATE.....4962   DIFFERENCE.......+816
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...............23 NW   AT  9:16 A.M.
                   AERO....................25 NW   AT  9:18 A.M.
                   ASOS....................24 N    AT  9:32 A.M.
                   DAVIS...................24 WNW  AT  9:15 A.M.  RMY 26
FASTEST MILE FOR YESTERDAY.................16 NW   AT  5:01 A.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE..............17 NW   AT  5:53 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.............15 W    AT  12:46 A.M.
AVERAGE WIND SPEED AND DIRECTION..........11.2 NW
                   ASOS...................11.0
                   DAVIS..................9.8 WNW [297 deg]
* Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE............-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........9.25   DEPARTURE............+6.82
                         ASOS..............9.31
TOTAL PRECIPITATION FOR THE YEAR..........29.34   DEPARTURE............+4.25
                         ASOS..............N/A*
*ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals 
     
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2013 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
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  90/69/80/+18/0.00/905/100       30 SW  AERO 32 MPH SW  RMY 33
6/2  86/64/75/+13/T/761/84           42 SSW AERO 44 MPH SSW RMY 46
6/3  75/57/66/+4/0.47/154/17         22 WNW AERO 22 MPH SSW RMY 22
6/4  70/48/59/-4/0.00/899/99         25 W   AERO 25 MPH W   RMY 25
6/5  73/51/62/-1/0.00/727/80         20 SSW AERO 21 MPH S   RMY 22
6/6  74/54/64/+1/0.03/455/50         22 SSE AERO 22 MPH S   RMY 22
6/7  57/51/54/-10/3.28/000/00        33 NE  AERO 32 MPH NE  RMY 34
6/8  77/52/65/+1/0.78/356/39         29 W   AERO 29 MPH W   RMY 29
6/9  78/57/68/+4/0.00/886/97         25 W   AERO 23 MPH W   RMY 25
6/10 69/55/62/-3/0.76/.../..         24 E   AERO 24 MPH E   RMY N/A
6/11 65/53/59/-6/1.61/.../..         29 E   AERO 29 MPH E   RMY N/A
6/12 69/54/62/-3/0.01/.../..         38 NW  AERO 41 MPH NW  RMY 41
6/13 65/50/58/-7/0.93/.../..         32 NE  AERO 33 MPH NE  RMY 34
6/14 70/61/61/-5/1.38/.../..         32 NE  AERO 32 MPH NE  RMY 29
6/15 77/56/67/+1/..../.../..         23 NW  AERO 25 MPH NW  RMY 26
 
6/16 morning low temp: 56F; the normal low is now 57F
 
DAILY RECORDS FOR JUNE 2013
6/1 - TIED DAILY RECORD MAXIMUM TEMPERATURE OF 90F;
     previous record of 90F set in 1937
6/1 - NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 69F;
     surpasses previous record of 68F set in 1944, 1987
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
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
 
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
 
TODAY'S REPORT PREPARED BY: Forrest Iwanik / Matt Magann