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Sunday, October 15, 2023

October 15, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, OCTOBER 15, 2023 ALL TIMES ARE…

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

SUNDAY, OCTOBER 15, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0557E
SUNSET:  1703E

MAINLY CLOUDY AND COOL WITH DRY CONDITIONS TODAY ON BLUE HILL…

Clouds have been hanging around today with some dim sunshine
from time to time. The good news is the rain associate with the
developing coastal storm has missed the area, and we have
actually achieved a dry weekend for a nice change of pace
(compared to the past several weekends).

Temperatures have been on the chilly side today with readings
only reaching the mid to upper 50s. The dew point has been
holding in the low to mid 40s.

The wind was steady from the north most of the day with an average
speed so far of around 10mph. Our peak gust so far is around 24mph,
occurring just after 10am this morning.

Visibility has been excellent today with the view holding at
around 70 miles.

The maximum temperature so far today has been 56F, which is 5
degrees below the normal high of 61F. The minimum temperature
since midnight is 46F, which is 2 degrees above the normal low
of 44F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus/altostratus, broken cirrostratus,
thin broken cirrus, few stratocumulus NE-SSE
Temperature: 46F; Dew Point: 43F; Relative Humidity: 87%
Wind: N @ 10G20 kts
Sea-level pressure: 997.3 mb; 29.45 in. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 47F
6-hr Min temp: 46F
24-hr Precip: 0.00 inches
BHO SA 1155 120 SCT E180 BKN 250 -BKN 70 973/46/43/3510G20/945/
FEW SC NE-SSE/ 8/578 56015 10047 20046

10 A.M.
Weather: Scattered altocumulus/altostratus, broken cirrostratus,
thin broken cirrus, few stratocumulus all quadrants
Temperature: 54F; Dew Point: 42F; Relative Humidity: 62%
Wind: N @ 9G20 kts
Sea-level pressure: 997.2 mb; 29.45in. Hg: falling unsteadily
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 150 SCT E180 BKN 250 -BKN 70 972/54/42/3509G20/945/
FEW SC ALQDS/ 8/578 57001

1 P.M.
Weather: Scattered stratocumulus, overcast altostratus, breaks in
overcast distant SW-N
Temperature: 55F; Dew Point: 42F; Relative Humidity: 62%
Wind: NNW @ 8G19 kts
Sea-level pressure: 996.4 mb; 29.42 in. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 56F
6-hr Min temp: 46F
6-hr Precip: 0.00 inches
BHO SA 1755 35 SCT E120 OVC 70 964/55/42/3308G19/942/
BINOVC DSNT SW-N SUN DMLY VSBL/ 8/51/ 56008 10056 20046

————————————————————–

SUMMARY FOR SATURDAY, OCTOBER 14, 2023

TEMPERATURE (DEGREES F)
MAX…….60   NORMAL…..62
MIN…….44   NORMAL…..45
MEAN……52   NORMAL…..53

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-1
TOTAL DEPARTURE FOR THE MONTH…………………+66 [+4.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………13  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………80  DEPARTURE…….-57
TOTAL HEATING UNITS FOR THE SEASON………….179  DEPARTURE…….-75
TOTAL HEATING UNITS LAST SEASON TO DATE……..226  DEPARTURE…….-47

COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………15  DEPARTURE……..+9
TOTAL COOLING UNITS FOR THE SEASON………….704  DEPARTURE…….+28
TOTAL COOLING UNITS LAST SEASON TO DATE……..884  DEPARTURE……-180

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated

F420C (Official)……….E24 NW   @  04:37 A.M.
VECTOR #1 (1-Sec)……….23 NW   @  03:54 A.M.
VECTOR #2 (1-Sec)……….23 NW   @  03:53 A.M.
DAVIS #1……………….22 NW   @  03:54 A.M.
DAVIS #2 ………………20 NW   @  12:35 A.M.
RMY #1 (Instantaneous)…..23 NW   @  03:54 A.M.
RMY #2 (Instantaneous)…..22 NW   @  03:53 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……22      @  03:54 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 NW   @  04:38 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15      @  04:37 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16      @  03:54 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 NW   @  04:38 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 NW   @  03:55 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 NW   @  04:38 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 NW   @  03:54 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16      @  04:37 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..7.8 NW [187 total miles] VECTOR #1………………8.4
VECTOR #2………………9.1
DAVIS #1……………….8.6 WNW
DAVIS #2……………….8.7 NW
RMY #1…………………8.3 WNW
RMY #2…………………8.9 WNW
RICHARDS (C5C)………….8.9

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..0.16 DEPARTURE…..-2.21
TOTAL PRECIPITATION FOR THE YEAR…………..47.38 DEPARTURE…..+6.34

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY:  R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

10/1  68/50/59/+1/0.00/458/65             20 NNE VEC1 20 NNE RMY 19
10/2  68/55/62/+4/0.00/681/97             24 NE  VEC1 23 NE  RMY 24
10/3  81/54/68/+11/0.00/672/96            18 WSW VEC1 18 WSW RMY 18
10/4  81/64/73/+16/0.00/669/96            17 S   VEC1 17 S   RMY 16
10/5  77/59/68/+11/0.00/638/92            24 S   VEC1 24 S   RMY 23
10/6  71/60/66/+10/0.00/269/39            20 SE  VEC1 19 SE  RMY 18
10/7  68/54/61/+5/0.16/007/01             30 WNW VEC1 29 WNW RMY 29
10/8  63/48/56/+1/0.00/651/95             30 W   VEC1 30 WNW RMY 30
10/9  61/44/53/-2/0.00/532/78             25 WSW VEC1 24 WSW RMY 25
10/10 64/47/56/+1/T/245/36                23 W   VEC1 22 W   RMY 21
10/11 68/50/59/+5/0.00/393/58             23 SSW VEC1 22 SW  RMY 22
10/12 69/51/60/+6/0.00/…/..             18 NW  VEC1 18 NNW RMY 18
10/13 61/43/52/-2/0.00/…/..             33 NW  VEC1 31 NW  RMY 34
10/14 60/44/52/-1/0.00/…/..             24 NW  VEC1 23 NW  RMY 23

10/15 The low since midnight is 46F, the daily normal low is 44F

————————————————————–

OCTOBER DAILY RECORDS TO DATE

.NONE…

————————————————————–

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

RECORDS FOR OCTOBER 15
HIGH 83F IN 1897
LOW 29F IN 1887,1937
PRECIP 4.58 INCHES IN 2005
SNOWFALL TRACE IN 1961,1972
PEAK GUST 69 MPH W IN 2003

RECORDS FOR OCTOBER 16
HIGH 86F IN 1897
LOW 28F IN 1886
PRECIP 2.82 INCHES IN 1974
SNOWFALL TRACE IN 2009
PEAK GUST 68e MPH SSE IN 1954 (HURRICANE HAZEL)

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
Part I — Data Use Policy
§ 01

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