BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 22, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
 
WARM TEMPERATURES AGAIN WITH HAZE AND HIGH CLOUDS
 
The temperature has risen to 82F at the summit so far this afternoon despite
high clouds and haze limiting sunshine.  This is a few degrees above the
average for today's date of 77F.  Higher temperatures as well as higher
humidities are expected over the next couple days.  This combination will
give the air a more moist and uncomfortable feel.  Winds have been fairly
light but steady at about 10-15mph out of the SW for most of the day. 
Visibility has been limited to under 40 miles because of haze today.
 
Warm weather is expected for the next few days, and the high temperature
may approach the daily records for a few days early this week.
 
Blue Hill Current Record High Maximum Temperatures (1885-2012)
Jun 23  93F  in 1888
Jun 24  91F  in 1914, 1976
Jun 25  93F  in 1943, 1980, 2005
 
Blue Hill Wettest Junes, inches (1886-2013)
1) 17.32 in 1998
2) 13.73 in 1982
3) 12.31 in 2006
4) 11.13 in 2013 (through 6/21)
5) 10.78 in 1922
6) 10.55 in 2013
7)  9.03 in 1938
8)  8.77 in 1931
9)  8.64 in 1920
10) 8.02 in 1959
 
Today's Observations:
 
7 A.M.
Weather: Scattered altocumulus, cirrus, few altocumulus castellanus
cirrus NNE-ESE and NW-overhead, haze aloft, thin smoke layer E-SE
Temperature: 66F; Dew Point: 55F; Wind: SW at 9 kts
Sea-level pressure: 30.23 ins. Hg, falling slightly then steady
Visibility: 35 miles, distant haze
6-hour min. temp: 62F
BHO SA 1155 70 SCT 250 SCT 35 237/66/55/2209/023/ FEW ACC HZ ALF DSNT HZ
THN K LYR E-SE/ 8/081 56001 10066 20062
 
10 A.M.
Weather: Scattered cirrus, few altocumulus castellaus W-N, cirrocumulus
overhead and S, cirrus undulatus overhead and E, haze aloft
Temperature: 76F; Dew Point: 62F; Wind: SW at 10 kts
Sea-level pressure: 30.24 ins. Hg, steady then rising slightly
Visibility: 35 miles, distant haze
BHO SA 1455 250 SCT 35 239/76/62/2210/024/ FEW ACC W-N CC OVHD AND S
CI UND OVHD AND E HZ ALF DSNT HZ/ 8/089 53002
 
1 P.M.
Weather: Scattered cirrostratus, scattered cirrus, few cumulus, cirrocumulus
overhead, haze aloft
Temperature: 81F; Dew Point: 60F; Wind: SW at 11 kts,
Wind: Direction variable SSW-W
Sea-level pressure: 30.22 ins. Hg, rising slightly then falling
Visibility: 35 miles, distant haze
6-hr max. temp: 82F
BHO SA 1755 220 SCT 250 SCT 35 233/81/60/2211/022/ FEW CU CC OVHD HZ ALF
DSNT HZ WND 21V28/ 8/108 58006 10082 20066
 
WEATHER SUMMARY FOR FRIDAY, JUNE 21, 2013
 
TEMPERATURE (DEGREES F)
MAX.....82     NORMAL.....77
MIN.....57     NORMAL.....59
MEAN....70     NORMAL.....68
 
DEPARTURE FROM 30-YEAR NORMAL....................+2
TOTAL DEPARTURE FOR THE MONTH....................+1 [-0.1 DEGREE/DAY]
 
HEATING DEGREE DAYS 
TOTAL HEATING UNITS FOR YESTERDAY..............0   DEPARTURE..........-1
TOTAL HEATING UNITS FOR THE MONTH.............47   DEPARTURE.........-18
TOTAL HEATING UNITS FOR THE SEASON..........5781   DEPARTURE........-586
TOTAL HEATING UNITS LAST SEASON TO DATE.....4983   DIFFERENCE.......+798
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...............22 SW  AT 2:53 A.M.
                   AERO....................22 SW  AT 2:53 A.M. *
                   ASOS....................23 SSW AT 2:53 A.M.
                   DAVIS...................22 SSW AT 2:11 A.M. RMY 21
FASTEST MILE FOR YESTERDAY.................18 SW  AT 2:30 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..............18 SSW AT 2:28 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.............19 SSW AT 2:27 A.M.
AVERAGE WIND SPEED AND DIRECTION..........11.0 SW
                   ASOS...................10.9
                   DAVIS..................10.3 SW [220 deg]
* last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE............-0.13
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH.........11.13   DEPARTURE............+7.86
                         ASOS.............11.20
TOTAL PRECIPITATION FOR THE YEAR..........31.22   DEPARTURE............+5.29
                         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 TSTM
6/9  78/57/68/+4/0.00/886/97         25 W   AERO 23 MPH W   RMY 25
6/10 69/55/62/-3/0.76/119/13         24 E   AERO 24 MPH E   RMY N/A
6/11 65/53/59/-6/1.61/000/00         29 E   AERO 29 MPH E   RMY N/A
6/12 69/54/62/-3/0.01/320/35         38 NW  AERO 41 MPH NW  RMY 41
6/13 65/50/58/-7/0.93/110/12         32 NE  AERO 33 MPH NE  RMY 34
6/14 70/61/61/-5/1.38/421/46         32 NE  AERO 32 MPH NE  RMY 29
6/15 77/56/67/+1/0.00/907/99         23 NW  AERO 24 MPH NW  RMY 26
6/16 74/57/66/0/0.00/266/29          25 S   AERO 24 MPH S   RMY 27
6/17 84/60/72/+5/1.27/.../..         45 NW  AERO 51 MPH NW  RMY 48 TSTM
6/18 74/56/65/-2/0.61/.../..         32 ENE AERO 32 MPH ENE RMY 33 TSTM
6/19 71/53/62/-5/T/.../..            20 NNE AERO 20 MPH NNE RMY N/A
6/20 78/53/66/-2/0.00/.../..         18 SSW AERO 20 MPH SSW RMY N/A
6/21 82/57/70/+2/0.00/.../..         22 SW  AERO 22 MPH SW  RMY 21
 
6/22 morning low temp: 62F; the normal low is now 59F
 
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 22
HIGH 93F IN 1921, 2012
LOW 43F IN 1940
PRECIP 1.57 INS IN 1900
PEAK GUST 74 MPH NW IN 1988
 
RECORDS FOR JUNE 23
HIGH 93F IN 1888
LOW 45F IN 1885
PRECIP 0.70 INS IN 2006
PEAK GUST 63 MPH SE IN 1972 (AGNES)
 
TODAY'S REPORT PREPARED BY: Jonathan O'Brien, William Wilson, Matthew
Magann, Peter Volpe