BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, OCTOBER 11, 2016  
ALL TIMES ARE IN EASTERN STANDARD TIME

ANOTHER DAY OF CLEAR SKIES, WINDS SHIFT OUT OF SE

Today has been another day of clear skies and low humidity.  Just a few
cirrus in the west could be spotted at the 1:00PM EST observation, and
dew points  remained in the lower 30s for much of the day.  Winds have
again been very light with a shift in direction out of the southeast
around 11:00AM EST.

Temperatures continue to be slightly cooler than average.  The overnight
low of 39F is the first temp. below 40F since April.  Clear skies allowed
temperatures to increase to a max. of 61F by 1:00PM.


7 A.M. 
Weather: Clear
Temperature: 42F; Dew Point: 31F; Wind: NNW at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.46 ins. Hg, rising, then more quickly
Visibility: 80 miles
6-hr Max temp: 42F
6-hr Min temp: 39F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 80 315/42/31/3406/046/ SKC WND LGT/ 53013 
10042 20039

10 A.M.
Weather: Clear
Temperature: 54F; Dew Point: 32F; Wind: estimated WNW at 2 kts,
Wind: Light and variable
Sea-level pressure: 30.49 ins. Hg, rising then falling
Visibility: 70 miles
BHO SA 1455 CLR 70 326/54/32/E3002/049/ SKC WND L/V/ 51011

1 P.M.
Weather: Few cirrus SSW-NW
Temperature: 60F; Dew Point: 27F; Wind: estimated SE at 3 kts,
Wind: Light and variable
Sea-level pressure: 30.46 ins. Hg, falling, then more quickly
Visibility: 70 miles
6-hr Max. temp: 61F
6-hr Min. temp: 42F
BHO SA 1755 CLR 70 314/60/27/E1303/046/ FEW CI SSW-NW WND L/V/
8/001 58012 10061 20042


SUMMARY FOR MONDAY, OCTOBER 10, 2016
 
TEMPERATURE (DEGREES F)
MAX.....57   NORMAL.....62
MIN.....40   NORMAL.....45
MEAN....49   NORMAL.....54

DEPARTURE FROM 30-YEAR NORMAL........................-5
TOTAL DEPARTURE FOR THE MONTH.......................+11 [+0.9 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE...........0
TOTAL COOLING UNITS FOR THE MONTH...............0   DEPARTURE..........-4
TOTAL COOLING UNITS FOR THE SEASON............894   DEPARTURE........+293
TOTAL COOLING UNITS LAST SEASON TO DATE.......810   DIFFERENCE........+84 

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............16   DEPARTURE..........+4
TOTAL HEATING UNITS FOR THE MONTH..............85   DEPARTURE.........-15
TOTAL HEATING UNITS FOR THE SEASON............160   DEPARTURE.........-83
TOTAL HEATING UNITS LAST SEASON TO DATE.......157   DIFFERENCE.........+3

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................32 NW   AT  8:48 A.M. 
                   ASOS........................34 NW   AT  9:12 A.M.  
                   DAVIS.......................31 WNW  AT  9:12 A.M. RMY 32 
FASTEST MILE FOR YESTERDAY.....................25 NNW  AT  8:29 A.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE..................24 NNW  AT  8:30 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE.................21 NW   AT  8:48 A.M.   
AVERAGE WIND SPEED AND DIRECTION.............15.3 NW
                   ASOS......................13.8
                   DAVIS.....................12.3 NW [320 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..........3.30  DEPARTURE......+1.82
                         ASOS..............3.31
TOTAL PRECIPITATION FOR THE YEAR..........30.62  DEPARTURE......-9.94
                         ASOS.............30.95 
 

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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

10/1  57/52/55/-2/1.22/000/00                 33 NNE AERO  M  RMY 34
10/2  55/52/54/-3/0.19/.../..                 23 N   AERO  M  RMY N/A
10/3  69/53/61/+5/0.00/.../..                 21 ENE AERO  M  RMY 20
10/4  61/47/54/-2/T/.../..                    26 NE  AERO  M  RMY 27
10/5  61/44/53/-3/0.00/.../..                 22 NE  AERO  M  RMY 21
10/6  71/46/59/+4/0.00/.../..                 16 SW* AERO  M  RMY 15
10/7  75/54/65/+10/0.00/.../..                16 S   AERO  M  RMY 16
10/8  69/53/61/+7/0.00/.../..                 23 SSW AERO  M  RMY 23
10/9  63/44/54/0/1.89/.../..                  28 N   AERO  M  RMY 34
10/10 57/40/49/-5/0.00/.../..                 32 NW  AERO  M  RMY 32

10/11 Low temp since midnight is 39F; normal low is now 45F

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated): 

RECORDS FOR OCTOBER 11
HIGH 80F IN 1919,1949
LOW 28F IN 1993
PRECIP 0.96 INCHES IN 1903
SNOWFALL (NONE)
PEAK GUST 66e MPH WNW IN 1941

RECORDS FOR OCTOBER 12
HIGH 87F IN 1954
LOW 31F IN 1906
PRECIP 1.53 INCHES IN 1948
SNOWFALL TRACE IN 1941
PEAK GUST 55 MPH NW IN 1963

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle