Sunday, October 27, 2019

| October 27, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, OCTOBER 27, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

RAINY WITH AN INCREASING EASTERLY WIND….

We experienced intensifying fog since this morning that
brought visibility down from 45 miles to a 1/2 mile as
the day went on. Skies were overcast, and rain began
around 8 A.M. Rain and wind have intensified, with a
max gust so far of 30 mph. There was 0.48 inches left
in the gauge at the 1 P.M. observation.

The high so far today is 49F, 8 degrees below the daily normal
maximum of 57F. The low since midnight is 45F, 6 degrees above
the normal low of 39F.

Today’s Observations:

7 A.M.
Weather: Overcast altostratus
Temperature: 47F; Dew Point: 43F; Wind: SE at 11 kts
Sea-level pressure: 30.22 ins. Hg, falling steadily
Visibility: 45 miles, distant fog
6-hr Max temp: 47F
6-hr Min temp: 46F
24-hr Precip: 0.00 ins.
BHO SA 1155 E60 OVC 45 232/47/43/1211/022/ DSNT FG ALQDS/
8/02/ 55017 10047 20046

10 A.M.
Weather: Light rain
Temperature: 45F; Dew Point: 45F; Wind: SE at 18G24 kts
Sea-level pressure: 30.16 ins. Hg, falling, then more
rapidly
Visibility: 5 miles, fog
3-hr Precip: 0.12 ins.
BHO SA 1455 25 SCT E65 OVC 5R-F 209/45/45/1218G24/016/
R-CTD/ 8/72/ 6012/ 58023

1 P.M.
Weather: Light rain
Temperature: 45F; Dew Point: 45F; Wind: E at 14G26 kts,
Peak wind: 30 MPH (26 kts) at 12:55 P.M.
Sea-level pressure: 30.02 ins. Hg, falling rapidly
Visibility: 1/2 mile, fog
6-hr Max temp: 49F
6-hr Min temp: 45F
6-hr Precip: 0.48 ins.
BHO SA 1755 X W3 1/2R-F 165/45/45/0914G26/002/ R-CTD
PK WND 0926/55/ 8//// 6048/ 58044 10049 20045

SUMMARY FOR SATURDAY OCTOBER 26, 2019

TEMPERATURE (DEGREES F)
MAX…..58   NORMAL…..57
MIN…..45   NORMAL…..39
MEAN….52   NORMAL…..48

DEPARTURE FROM 30-YEAR NORMAL…………………+4
TOTAL DEPARTURE FOR THE MONTH………………..+35 [+1.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………13  DEPARTURE………-4
TOTAL HEATING UNITS FOR THE MONTH…………..293  DEPARTURE……..-40
TOTAL HEATING UNITS FOR THE SEASON………….386  DEPARTURE……..-89
TOTAL HEATING UNITS LAST SEASON TO DATE……..439  DEPARTURE……..-53

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………………..20 N    AT 10:16 A.M.
AERO…………………….18 N    AT 10:12 A.M.
ASOS…………………….20 N    AT 10:13 A.M.
DAVIS……………………20 NNW  AT 10:12 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….14 N    AT 10:16 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….14 NNW  AT 10:14 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………15 NNW  AT 10:12 A.M.
AVERAGE WIND SPEED AND DIRECTION…………….6.6 NW
ASOS…………………….7.0
DAVIS……………………7.0 NNE [29 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….5.05  DEPARTURE……+1.14
ASOS…………..5.32
TOTAL PRECIPITATION FOR THE YEAR……….43.47  DEPARTURE……+0.47
ASOS………….43.55

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/…/..               28 SW  AERO 25 SSW RMY 29
10/02  74/49/62/+5/0.42/…/..               30 ENE AERO 25 ENE RMY 28
10/03  51/46/49/-7/…./…/..               28 ENE AERO 26 ENE RMY N/A
10/04  59/40/50/-6/…./…/..               38 NNW AERO 38 NNW RMY 38
10/05  58/35/47/-9/0.00/…/..               21 N   AERO 18 SSW RMY N/A
10/06  65/44/55/0/0.00/…/..                36 SSW AERO 35 SSW RMY N/A
10/07  77/57/67/+12/0.12/…/..              47 SSW AERO 46 SSW RMY 49
10/08  60/52/56/+2/T/…/..                  22 NE  AERO 18 NW  RMY N/A
10/09  55/49/52/-2/…./…/..               43 NE  AERO 37 NE  RMY 44
10/10  54/47/51/-3/…./…/..               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/…./…/..               39 NE  AERO 37 NE  RMY N/A
10/13  66/48/57/+4/…./…/..               18 WNW AERO 17 WNW RMY 18
10/14  67/51/59/+7/…./…/..               18 WSW AERO 17 WSW RMY N/A
10/15  61/43/52/0/…./…/..                18 NNW AERO 17 NNW RMY N/A
10/16  61/45/53/+2/…./…/..               58 ESE AERO 58 ESE RMY N/A
10/17  60/46/53/+2/…./…/..               61 E   AERO 63 E   RMY N/A
10/18  57/41/49/-2/…./…/..               29 WNW AERO 32 W   RMY 32
10/19  58/36/47/-3/…./…/..               18 NW  AERO 18 NW  RMY 19
10/20  60/43/52/+2/T/…/..                  14 NE  AERO 16 NE  RMY N/A
10/21  59/49/54/+4/0.01/…/..               25 E   AERO 21 NE  RMY 23
10/22  58/47/53/+4/…./…/..               29 E   AERO 28 E   RMY 23
10/23  65/48/57/+8/…./…/..               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 The low since midnight is 46F, normal daily minimum is 39F

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

RECORDS FOR OCTOBER 27
HIGH 83F IN 1963
LOW 21F IN 1936
PRE 1.79 INCHES IN 1886
SNOW 2.5 INCHES IN 2011
WIND 54 MPH WNW IN 1968

RECORDS FOR OCTOBER 28
HIGH 81F IN 1919
LOW 23F IN 1914
PRECIP 2.46 INCHES IN 2006
SNOWFALL TRACE IN 1934,1957,1979
PEAK GUST 71 MPH SSW IN 1995

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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