Thursday, October 31, 2019

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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