BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, SEPTEMBER 23, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
UNSEASONABLY WARM TEMPERATURES CONTINUE
 
The low temperature this morning was 12 degrees warmer than
normal at 63 degrees and the early afternoon high had reached
77 degrees or well above the normal of 69 degrees. A few very
light sprinkles of rain were observed today.
 
Yesterday's updated US Drought Monitor still shows no change 
in the extreme drought conditions affecting most of the state.  
Blue Hill Observatory is currently 1.41 in. below normal for 
the month and 11.46 in. below normal for the year.
 
 
7 A.M.
Weather: Scattered altocumulus, overcast altocumulus and altostratus,
small break in overcast north, large break in overcast (clear sky band)
mostly distant E-SW
Temperature: 63F; Dew Point: 49F; Wind: SW at 8 kts
Sea-level pressure: 30.04 ins. Hg, rising very slightly
Visibility: 60 miles
6-hr Max temp: 65F
6-hr Min temp: 63F
24-hr precip: 0.00 in.
BHO SA 1155 100 SCT E140 OVC 60 174/63/49/2308/004/
SML BINOVC N LGE BINOVC/CLR SKY BND XTDNG MSTLY DSNT E-SW/
8/07/ 53002 10065 20063 
 
10 A.M.
Weather: Scattered altocumulus, overcast altostratus, small break
in overcast overhead and breaks in overcast SSE-SSW, VIRGA 
Temperature: 74F; Dew Point: 50F; Wind: WNW at 7 kts,
Wind: Wind shift at 0910; wind direction gradually veering
Sea-level pressure: 30.01 ins. Hg, falling then more slowly
Visibility: 50 miles, except 25 miles NE hazy 
BHO SA 1455 E150 BKN 180 OVC 50 164/74/50/3007/001/ SML BINOVC OVHD AND
BINOVC SSE-SSW VSBY NE 25 HAZY VIRGA WSHFT 10 WND GRLY VEERING/
8/07/ 56010
 
1 P.M.
Weather: Scattered altocumulus castellanus vicinity NW-N,
breaks in overcast, bright spots in overcast, 
Temperature: 77F; Dew Point: 51F; Wind: WNW at 6 kts
Sea-level pressure: 29.98 ins. Hg, falling, then more slowly
Visibility: 40 miles, except WNW 55,NE 30 miles, distant haze
6-hr Max. temp: 77F
6-hr Min. temp: 63F
6-hr precip: Trace
BHO SA 1755 60 SCT E150 BKN 220 OVC 40 153/77/51/2906/998/ ACC VC NW-N
SML BINOVC BRGHT SPTS IOVC VIRGA VSBY WNW 55 NE 25 DSNT HZ/ 8/082
56011 MANUAL 6000/ 10077 20063
 
SUMMARY FOR THURSDAY, SEPTEMBER 22, 2016

TEMPERATURE (DEGREES F)
MAX.....82   NORMAL.....69
MIN.....63   NORMAL.....52
MEAN....73   NORMAL.....61
 
DEPARTURE FROM 30-YEAR NORMAL.......................+12
TOTAL DEPARTURE FOR THE MONTH......................+100 [+4.3 DEGREES/DAY]
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............8   DEPARTURE..........+7
TOTAL COOLING UNITS FOR THE MONTH.............100   DEPARTURE.........+40
TOTAL COOLING UNITS FOR THE SEASON............892   DEPARTURE........+295
TOTAL COOLING UNITS LAST SEASON TO DATE.......797   DIFFERENCE........+87
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-5
TOTAL HEATING UNITS FOR THE MONTH...............6   DEPARTURE.........-51
TOTAL HEATING UNITS FOR THE SEASON.............16   DEPARTURE.........-66
TOTAL HEATING UNITS LAST SEASON TO DATE........17   DIFFERENCE.........+3
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................23 S   AT  7:59 P.M.
                   ASOS........................25 SSW AT  8:05 P.M. 
                   DAVIS.......................23 S   AT  7:59 P.M. RMY 25
FASTEST MILE FOR YESTERDAY.....................18 S   AT  9:08 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE..................18 S   AT  9:12 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE.................18 S   AT  9:12 P.M. 
 AVERAGE WIND SPEED AND DIRECTION.............9.7 NE
                   ASOS.......................9.9
                   DAVIS......................8.9 ESE [120 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..........1.47  DEPARTURE......-1.41
                         ASOS..............1.47
TOTAL PRECIPITATION FOR THE YEAR..........26.44  DEPARTURE.....-11.46
                         ASOS.............26.74
 
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
M:    Missing data
 
9/1  72/64/68/0/0.09/000/00                  21 NNW AERO 16 NNW RMY 20
9/2  76/58/67/-1/0.00/738/94                 23 ENE AERO 17 NE  RMY 23
9/3  72/56/64/-3/0.00/368/47                 16 E   AERO 12 E   RMY N/A
9/4  71/58/65/-2/0.00/740/95                 28 NE  AERO 21 NE  RMY 27
9/5  73/57/65/-2/0.52/241/31                 42 NNE AER0 33 NNE RMY 43 
9/6  70/61/66/-1/0.54/046/06                 32 N   AERO 23 NNE RMY N/A 
9/7  78/66/72/+6/0.05/339/44                 21 NE* AERO 15 NE* RMY 21
9/8  79/65/72/+6/T/276/36                    22 S   AERO 15 S   RMY 23
9/9  90/69/80/+14/T/421/55                   23 W   AERO 24 W   RMY 25 
9/10 82/71/77/+12/T/229/30                   25 S   AERO 18 S   RMY 32
9/11 79/59/69/+4/0.10/365/48                 39 WNW AERO 30 WNW RMY 43
9/12 76/53/65/0/0.00/749/99                  18 SW* AERO 13 WNW RMY 19
9/13 81/57/69/+5/0.00/739/98                 25 SSW AERO  M     RMY 26
9/14 87/58/73/+9/T/526/70                    35 NNW AERO  M     RMY 35
9/15 67/52/60/-4/0.00/531/71                 21 NE  AERO  M     RMY 20
9/16 74/54/64/+1/0.00/567/76                 23 SSE AERO  M     RMY 24  
9/17 77/54/66/+3/0.00/.../..                 28 S   AERO  M     RMY 28
9/18 79/63/71/+9/T/.../..                    30 SW  AERO  M     RMY 33
9/19 73/67/70/+8/0.16/.../..                 25 S   AERO  M     RMY N/A
9/20 81/66/74/+12/0.00/.../..                16 WSW*AERO  M     RMY N/A
9/21 81/64/73/+12/T/.../..                   20 WNW AERO  M     RMY 18
9/22 82/63/73/+12/0.00/.../..                23 S   AERO  M     RMY 25   
 
9/23 Low temp since midnight is 63F; normal low is now 52F
 
DAILY RECORDS FOR SEPTEMBER 2016
 
9/10/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 71F,
         BREAKS PREVIOUS RECORD OF 69F SET IN 1915, 1931, AND 1989
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR SEPTEMBER 23
HIGH 93F IN 1895,1914
LOW 33F IN 1904
PRECIP 2.67 INCHES IN 1994
PEAK GUST 62 MPH SSW IN 1989
 
RECORDS FOR SEPTEMBER 24
HIGH 87F IN 1959
LOW 33F IN 1885,1950,1963
PRECIP 1.19 INCHES IN 1955
PEAK GUST 54e MPH SW IN 1940
 
TODAY'S REPORT PREPARED BY: Robert Skilling