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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, OCTOBER 12, 2016  
ALL TIMES ARE IN EASTERN STANDARD TIME

SUNNY SKIES CONTINUE, BRINGING WARMER TEMPS 

Nearly cloudless skies have allowed temperatures to become slightly
warmer than normal today.  They warmed to a max. of 66F by 1:00PM EST
from an overnight low of 49F.  

Winds were light again today due to the slow-moving ridge of high pressure.
Visibility improved to 70 miles by late morning after the morning temperature
inversion dissipated.


7 A.M. 
Weather: Few cirrostratus in all direction, few cirrus S-SW,
thin fog below inversion NE-S
Temperature: 51F; Dew Point: 41F; Wind: SW at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.39 ins. Hg, rising, then less quickly
Visibility: 50 miles
6-hr Max temp: 51F
6-hr Min temp: 49F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 50 292/51/41/2306/039/ FEW CS ALQDS FEW CI S-SW
THN FG BLO INVSN NE-S WND LGT/ 8/005 51004 10051 20049

10 A.M.
Weather: Few cumulus SE-SW, few cirrus in all directions
Temperature: 60F; Dew Point: 50F; Wind: SSW at 6 kts,
Wind: Light and variable
Sea-level pressure: 30.38 ins. Hg, falling, then more quickly
Visibility: 70 miles
BHO SA 1455 CLR 70 289/60/50/2006/038/ FEW CU SE-SW FEW CI ALQDS 
WND LGT/ 8/101 28003

1 P.M.
Weather: Scattered cirrus
Temperature: 66F; Dew Point: 42F; Wind: S at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.28 ins. Hg, falling, then more quickly
Visibility: 70 miles
6-hr Max. temp: 61F
6-hr Min. temp: 42F
BHO SA 1755 250 SCT 70 255/66/42/1806/028/ WND LGT/ 8/001 58021 
10066 20051


SUMMARY FOR TUESDAY, OCTOBER 11, 2016
 
TEMPERATURE (DEGREES F)
MAX.....62   NORMAL.....62
MIN.....39   NORMAL.....45
MEAN....51   NORMAL.....53

DEPARTURE FROM 30-YEAR NORMAL........................-2
TOTAL DEPARTURE FOR THE MONTH........................+9 [+0.6 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..............14   DEPARTURE..........+2
TOTAL HEATING UNITS FOR THE MONTH..............99   DEPARTURE.........-14
TOTAL HEATING UNITS FOR THE SEASON............174   DEPARTURE.........-81
TOTAL HEATING UNITS LAST SEASON TO DATE.......165   DIFFERENCE.........+9

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................17 N    AT 12:02 A.M. 
                   ASOS........................19 N    AT 12:13 A.M.  
                   DAVIS.......................16 NW   AT 12:02 A.M. RMY 13 
FASTEST MILE FOR YESTERDAY.....................13 NNW  AT 12:09 A.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE..................14 N    AT 12:22 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE.................12 NNW  AT 12:11 A.M.   
AVERAGE WIND SPEED AND DIRECTION..............6.9 NNW
                   ASOS.......................7.0
                   DAVIS......................6.2 NNE [030 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......+1.67
                         ASOS..............3.31
TOTAL PRECIPITATION FOR THE YEAR..........30.62  DEPARTURE.....-10.09
                         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 62/39/51/-2/0.00/.../..                 17 N   AERO  M  RMY 13

10/12 Low temp since midnight is 49F; normal low is now 44F

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

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

RECORDS FOR OCTOBER 13
HIGH 84F IN 1930,1954
LOW 29F IN 2012
PRECIP 5.92 INCHES IN 1895
SNOWFALL 4.2 INCHES IN 1934
PEAK GUST 46e MPH W IN 1950

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle