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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, SEPTEMBER 8, 2016  
ALL TIMES ARE IN EASTERN STANDARD TIME

SKIES REMAIN CLOUDY THROUGH AFTERNOON AS REMNANTS OF HERMINE
MOVE FARTHER NORTHEAST

Morning fog did not burn away until well after the 10:00AM EST
observation creating very humid conditions at the top of the hill.
Skies remained mostly cloudy with broken stratus in the early
afternoon. 

Early morning cloud clover prevented temperatures from dropping
too much, leaving us with an overnight low of 65F, 7F above the
normal.  Temperatures warmed to a max. of 75F by 1:00PM EST.

A brief early morning rain shower measured 0.01 inches making the total
at 7:00EST this morning 0.06 inches.  Light drizzle fell before 10:00AM
leaving only a trace for the day so far.
   

7 A.M. 
Weather: Thick fog
Temperature: 67F; Dew Point: 67F; Wind: NNW at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.93 ins. Hg, rising, then falling
Visibility: 1/16 mile
6-hr Max temp: 67F
6-hr Min temp: 65F
24-hr precip: 0.06 in.
BHO SA 1155 W2 X 1/16F 136/67/67/3406/993/ WND LGT/ 8//// 58001
MANUAL 70006 ASOS 70006 10067 20065

10 A.M.
Weather: Light drizzle, fog 
Temperature: 69F; Dew Point: 69F; Wind: N at 4 kts,
Wind Speed: Light
Sea-level pressure: 29.92 ins. Hg, falling, then rising
3-hr. precip: Trace
BHO SA 1455 W3 X 2L-F 131/69/69/3504/992/ WND LGT/ 8//// 56005
MANUAL 600//

1 P.M. 
Weather: Scattered cumulus, broken stratus, broken cirrus
Temperature: 74F; Dew Point: 67F; Wind: Calm
Sea-level pressure: 29.88 ins. Hg, falling, then less quickly
Visibility: 20 miles
6-hr Max. temp: 75F 
6-hr Min. temp: 67F
6-hr precip: Trace
BHO SA 1755 25 SCT E40 BKN 250 BKN 20 119/74/67/E0000/988/ 8/601 56012
MANUAL 600// 10075 20067

SUMMARY FOR WEDNESDAY, SEPTEMBER 7, 2016
 
TEMPERATURE (DEGREES F)
MAX.....78   NORMAL.....75
MIN.....66   NORMAL.....58 
MEAN....72   NORMAL.....66

DEPARTURE FROM 30-YEAR NORMAL........................+6
TOTAL DEPARTURE FOR THE MONTH........................-3 [+0.2 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............7   DEPARTURE..........+4
TOTAL COOLING UNITS FOR THE MONTH..............13   DEPARTURE.........-11
TOTAL COOLING UNITS FOR THE SEASON............805   DEPARTURE........+244
TOTAL COOLING UNITS LAST SEASON TO DATE.......718   DIFFERENCE........+87 

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-2
TOTAL HEATING UNITS FOR THE MONTH...............0   DEPARTURE.........-10
TOTAL HEATING UNITS FOR THE SEASON.............10   DEPARTURE.........-25
TOTAL HEATING UNITS LAST SEASON TO DATE.........1   DIFFERENCE.........+9   

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................21 NE  AT  3:56 P.M.* 
                   AEROVANE....................15 NE  AT  3:55 P.M.* 
                   ASOS........................22 ESE AT  3:36 A.M. 
                   DAVIS.......................20 ESE AT 12:04 A.M. RMY 21
FASTEST MILE FOR YESTERDAY.....................16 ESE AT 12:45 A.M.*    
MAXIMUM 2-MINUTE ASOS AVERAGE..................17 ESE AT  3:37 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE.................16 ESE AT 12:02 A.M. 
AVERAGE WIND SPEED AND DIRECTION..............9.6 NNE  
                   ASOS......................10.0
                   DAVIS......................8.8 NE [060 Deg.]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.06  DEPARTURE......-0.07
                         ASOS..............0.06
TOTAL PRECIPITATION FOR THE MONTH..........1.21  DEPARTURE......+0.37
                         ASOS..............1.22
TOTAL PRECIPITATION FOR THE YEAR..........26.18  DEPARTURE..... -9.68
                         ASOS.............26.49 
 
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

9/1  72/64/68/0/0.09/.../..                  21 NNW AERO 16 NNW RMY 20
9/2  76/58/67/-1/0.00/.../..                 23 ENE AERO 17 NE  RMY 23
9/3  71/56/64/-3/0.00/.../..                 16 E   AERO 12 E   RMY N/A
9/4  71/58/65/-2/0.00/.../..                 28 NE  AERO 21 NE  RMY 27
9/5  73/57/65/-2/0.52/.../..                 42 NNE AER0 33 NNE RMY 43  
9/6  70/61/66/-1/0.54/.../..                 32 N   AERO 23 NNE RMY N/A  
9/7  78/66/72/+6/0.05/.../..                 21 NE* AERO 15 NE* RMY 21

9/8  Low temp since midnight is 65F; normal low is now 57F

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

RECORDS FOR SEPTEMBER 7
HIGH 92F IN 2007, 2015
LOW 40F IN 1888
PRECIP 2.95 INCHES IN 1891
PEAK GUST 58e MPH W IN 1941

RECORDS FOR SEPTEMBER 8
HIGH 97F IN 2015
LOW 42F IN 1978
PRECIP 1.51 INCHES IN 2011
PEAK GUST 45 MPH S IN 2012

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle