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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, OCTOBER 31, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

DRIZZLE AND INTENSIFYING WIND WITH ABOVE NORMAL 
TEMPERATURES....

We observed fog that varied in thickness, with the lowest
visibility of a 1/2 mile around 8 A.M. Overnight rainfall 
amounted to 0.16 inches, with an additional 0.07 inches 
between 7 A.M. and 1 P.M. Wind was southerly, with a max gust
of 45 mph after noontime.   

The high so far today is 66F, 10 degrees above the 
daily normal maximum of 56F. The low since midnight 
is 58F, 21 degrees above the normal minimum of 37F.

Happy Halloween!   

Today's Observations:

7 A.M.
Weather: Scattered stratus fractus, overcast nimbostratus,
light drizzle
Temperature: 58F; Dew Point: 58F; Wind: S at 16 kts
Sea-level pressure: 30.01 ins. Hg, falling steadily
Visibility: 15 miles, fog
6-hr Max temp: 60F
6-hr Min temp: 58F
24-hr Precip: 0.16 ins.
BHO SA 1155 25 SCT E65 OVC 15L- 162/58/58/1816/001/ 
DSNT FG ALQDS L-CTD/ 8/72/ 70016 58015 10060 20058 

10 A.M.
Weather: Scattered stratus fractus, overcast nimbostratus,
drizzle
Temperature: 65F; Dew Point: 65F; Wind: S at 20G30 kts,
Peak wind: 35 MPH (30 kts) S at 9:30 A.M.
Sea-level pressure: 29.95 ins. Hg, steady
Visibility: 10 miles, distant fog
3-hr Precip: 0.04 ins.
BHO SA 1455 25 SCT E65 OVC 10L 143/65/65/1920G30/995/ 
DSNT FG ALQDS L CTD PK WND 1930/30/ 8/72/ 6004/ 58019

1 P.M.
Weather: Broken stratus fractus, overcast nimbostratus,
light drizzle
Temperature: 65F; Dew Point: 65F; Wind: S at 18G31 kts,
Peak wind: 41 MPH (36 kts) S at 12:27 P.M.
Sea-level pressure: 29.89 ins. Hg, falling steadily 
Visibility: 20 miles due to a distant fog
6-hr Max temp: 66F
6-hr Min temp: 58F
6-hr Precip: 0.07 ins. 
BHO SA 1755 E20 BKN 65 OVC 20L- 119/65/65/1918G31/989/ 
DSNT FG ALQDS L CTD PK WND 1936/27/ 8/72/ 6007/ 58024 
10066 20058


SUMMARY FOR WEDNESDAY, OCTOBER 30, 2019 

TEMPERATURE (DEGREES F)
MAX.....65   NORMAL.....56
MIN.....51   NORMAL.....38
MEAN....58   NORMAL.....47

DEPARTURE FROM 30-YEAR NORMAL....................+11
TOTAL DEPARTURE FOR THE MONTH....................+53 [+1.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY................7  DEPARTURE........-11
TOTAL HEATING UNITS FOR THE MONTH..............345  DEPARTURE........-58
TOTAL HEATING UNITS FOR THE SEASON.............438  DEPARTURE.......-107
TOTAL HEATING UNITS LAST SEASON TO DATE........522  DEPARTURE........-84

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE..........0
TOTAL COOLING UNITS FOR THE MONTH................2  DEPARTURE.........-3
TOTAL COOLING UNITS FOR THE SEASON.............682  DEPARTURE........+80
TOTAL COOLING UNITS LAST SEASON TO DATE........874  DEPARTURE.......-192

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................24 S   AT 11:59 P.M.  
                   AERO.........................MISSING  
                   ASOS.........................25 S   AT 11:58 P.M.
                   DAVIS........................25 S   AT 11:59 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY......................17 S   AT 11:59 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................18 S   AT 11:59 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................17 S   AT 11:59 P.M.
AVERAGE WIND SPEED AND DIRECTION................6.0 S                   
                   ASOS.........................6.6 
                   DAVIS........................6.4 SSE [155 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.16  DEPARTURE......+0.01
                         ASOS..............0.15
TOTAL PRECIPITATION FOR THE MONTH..........6.72  DEPARTURE......+2.19
                         ASOS..............7.04
TOTAL PRECIPITATION FOR THE YEAR..........45.14  DEPARTURE......+1.52
                         ASOS.............45.27


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

10/01  67/52/60/+3/0.06/028/04               28 SW  AERO 25 SSW RMY 29
10/02  74/49/62/+5/0.42/021/03               30 ENE AERO 25 ENE RMY 28
10/03  51/46/49/-7/..../000/00               28 ENE AERO 26 ENE RMY N/A
10/04  59/40/50/-6/..../397/57               38 NNW AERO 38 NNW RMY 38
10/05  58/35/47/-9/0.00/687/99               21 N   AERO 18 SSW RMY N/A
10/06  65/44/55/0/0.00/263/38                36 SSW AERO 35 SSW RMY N/A
10/07  77/57/67/+12/0.12/316/46              47 SSW AERO 46 SSW RMY 49
10/08  60/52/56/+2/T/000/00                  22 NE  AERO 18 NW  RMY N/A
10/09  55/49/52/-2/..../000/00               43 NE  AERO 37 NE  RMY 44
10/10  54/47/51/-3/..../000/00               41 NE  AERO 37 NE  RMY 42
10/11  52/48/50/-3/..../000/00               41 NE  AERO 39 NE  RMY 41
10/12  52/49/51/-2/..../000/00               39 NE  AERO 37 NE  RMY N/A
10/13  66/48/57/+4/..../570/85               18 WNW AERO 17 WNW RMY 18
10/14  67/51/59/+7/..../335/50               18 WSW AERO 17 WSW RMY N/A
10/15  61/43/52/0/..../653/98                18 NNW AERO 17 NNW RMY N/A
10/16  61/45/53/+2/..../305/46               58 ESE AERO 58 ESE RMY N/A
10/17  60/46/53/+2/..../086/13               61 E   AERO 63 E   RMY N/A
10/18  57/41/49/-2/..../099/15               29 WNW AERO 32 W   RMY 32
10/19  58/36/47/-3/..../648/99               18 NW  AERO 18 NW  RMY 19
10/20  60/43/52/+2/T/280/43                  14 NE  AERO 16 NE  RMY N/A
10/21  59/49/54/+4/0.01/591/91               25 E   AERO 21 NE  RMY 23
10/22  58/47/53/+4/..../078/12               29 E   AERO 28 E   RMY 23
10/23  65/48/57/+8/..../431/67               35 W   AERO 35 W   RMY 36
10/24  67/43/55/+6/.../.../..                28 SSW AERO 28 SSW RMY 29
10/25  64/47/56/+7/.../.../..                20 WSW AERO 21 SW  RMY N/A
10/26  58/45/52/+4/.../.../..                20 N   AERO 18 N   RMY N/A
10/27  52/45/49/+1/1.43/.../..               37 ESE AERO 35 ESE RMY 37
10/28  53/46/50/+2/.../.../..                24 NNW AERO 24 NNW RMY N/A
10/29  54/47/51/+4/..../.../..               15 ESE AERO 15 ESE RMY 14
10/30  65/51/58/+11/..../.../..              24 S   AERO M  M   RMY N/A

10/31 The low since midnight is 58F, normal daily minimum is 38F


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

RECORDS FOR OCTOBER 31
HIGH 79F IN 1946
LOW 22F IN 1904
PRECIP 3.74 INCHES IN 1991
SNOWFALL TRACE IN 1906
PEAK GUST 70e S IN 1945

RECORDS FOR NOVEMBER 1
HIGH 75 IN 2003
LOW 22 IN 1913,1923
PRECIP 2.93 INCHES IN 1985
SNOWFALL TRACE IN 1906,1951
PEAK GUST 78 ESE IN 1997

TODAY'S REPORT PREPARED BY: Benjamin Turner