Sign In Become a Member
Donate
Daily Discussions

Sunday, December 17, 2023

December 17, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, DECEMBER 17, 2023 ALL TIMES ARE…

Agreement required — click “Accept & Continue” below to review and accept the Data Use & Privacy Policy

Access to this content requires acceptance of our Data Use & Privacy Policy.

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

SUNDAY, DECEMBER 17, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0708E
SUNSET:  1613E

MILD, YET OVERCAST AND DREARY AS THE AIR MASS CHANGES….

Today we observed a low visibility of 20 miles due to distant fog.
The pressure over the course of the day has dropped off by almost
6 millibars, signifying incoming weather from the south. Skies were
overcast with a prevailing layer of cirrostratus in the morning, but
quickly changed over to low-level stratus around noontime.

There is a wind coming in from the east that is around 10 mph with
a highest gust so far today of 22 mph. The breeze feels cool off the
water as milder temperatures persist.

The maximum temperature for today is 49F degrees, this is 9 degrees
above the normal high of 40F. The minimum temperature since midnight
is 37F degrees, this is 12 degrees above the normal low of 25F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast cirrostratus, few distant stratocumulus SE-W-NE,
sun dimly visible
Temperature: 38F; Dew Point: 36F; Relative Humidity: 92%
Wind: E @ 11G17 kts
Sea-level pressure: 1031.5 mb; 30.46 in. Hg: falling, then more rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 38F
6-hr Min temp: 37F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 20 OVC 200 315/38/36/0911G17/046/ FEW SC DSNT SE-W-NE SUN DMLY
VSBL THN F ALQDS/ 8/507 58025 10038 20037

10 A.M.
Weather: Overcast cirrostratus, few distant stratocumulus
Temperature: 44F; Dew Point: 41F; Relative Humidity: 89%
Wind: E @ 10G15 kts
Sea-level pressure: 1030.4 mb; 30.43 in. Hg: falling, then more rapidly
Visibility: 20 miles, thin layer of fog
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 20 OVC 200 304/44/41/0910G15/043/ FEW SC DSNT ALQDS THN F ALQDS/
8/507 58011

1 P.M.
Weather: Overcast stratus
Temperature: 48F; Dew Point: 43F; Relative Humidity: 81%
Wind: ESE @ 7G11 kts
Sea-level pressure: 1025.7 mb; 30.29 in. Hg: falling, then more rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 49F
6-hr Min temp: 38F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 20 OVC 20 257/48/43/1107G11/029/ THN F ALQDS/ 8/6//
58047 10049 20038

————————————————————–

SUMMARY FOR SATURDAY, DECEMBER 16, 2023

TEMPERATURE (DEGREES F)
MAX…….50   NORMAL…..40
MIN…….36   NORMAL…..25
MEAN……43   NORMAL…..32

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….+11
TOTAL DEPARTURE FOR THE MONTH………………….+67 [+4.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY……………22  DEPARTURE…….-11
TOTAL HEATING UNITS FOR THE MONTH…………..419  DEPARTURE…….-68
TOTAL HEATING UNITS FOR THE SEASON…………1506  DEPARTURE……-184
TOTAL HEATING UNITS LAST SEASON TO DATE…….1426  DEPARTURE…….+80

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)……….E21 WNW  @  7:12 P.M.
VECTOR #1 (1-Sec)……….22 WNW  @  7:11 P.M.
VECTOR #2 (1-Sec)……….23 WNW  @  9:04 A.M.
DAVIS #1……………….23 W    @  7:11 P.M.
DAVIS #2 ………………23 WNW  @  7:16 P.M.
RMY #1 (Instantaneous)…..22 WNW  @  6:37 A.M.
RMY #2 (Instantaneous)…..23 WNW  @  7:16 P.M.
MERLIN…………………21 NW
RICHARDS (C5C) (Inst)……21      @  7:11 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 ESE  @  7:10 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16      @  7:11 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17      @  9:04 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 NW   @  8:06 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 NW   @  7:00 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 ESE  @  7:11 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 NW   @  2:34 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16      @  8:06 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….10.5 ESE [253 total miles] VECTOR #1……………..10.5
VECTOR #2……………..11.1
DAVIS #1………………10.9 NE
DAVIS #2………………10.9 NE
RMY #1………………..10.0 E
RMY #2………………..10.4 E
RICHARDS (C5C)…………10.9

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..3.50 DEPARTURE…..+0.64
TOTAL PRECIPITATION FOR THE YEAR…………..54.87 DEPARTURE…..+3.54

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE MONTH………………..0.3 DEPARTURE……-5.0
TOTAL SNOWFALL FOR THE SEASON (2023-2024)…….0.3 DEPARTURE……-7.5

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

12/1  51/38/45/+8/0.04/0.0/213/38         29 SW  VEC1 28 SW  RMY 29
12/2  48/43/46/+9/T/0.0/000/00            18 SSW VEC1 19 SSW RMY 19
12/3  44/41/43/+7/0.76/0.0/000/00         31 ENE VEC1 32 ENE RMY 33
12/4  49/37/43/+7/0.07/0.0/155/28         23 W   VEC1 22 W   RMY 23
12/5  38/28/33/-3/0.00/0.0/144/26         23 NNW VEC1 24 NW  RMY 24
12/6  34/22/28/-7/0.01/0.3/100/18         21 N   VEC1 21 N   RMY 20
12/7  28/17/56/-12/0.00/0.0/121/22        18 NNW VEC1 18 NW  RMY 19
12/8  42/24/33/-2/0.00/0.0/530/96         20 S   VEC1 18 S   RMY 18
12/9  52/33/43/+9/0.00/0.0/264/48         24 S   VEC1 24 S   RMY 24
12/10 60/43/52/+18/0.66/0.0/033/06        55 SSW VEC1 54 SSW RMY 53
12/11 61/33/47/+13/1.96/0.0/038/07        69 SSW VEC1 69 SSW RMY 71
12/12 42/29/36/+2/0.00/0.0/543/99         33 WNW VEC1 32 WNW RMY 34
12/13 43/28/36/+3/0.00/0.0/470/86         36 WNW VEC1 34 WNW RMY 36
12/14 34/22/28/-5/0.00/0.0/…/..         31 SW  VEC1 31 SW  RMY 32
12/15 53/30/42/+9/0.00/0.0/…/..         31 WNW VEC1 30 WNW RMY 28
12/16 50/36/43/+11/0.00/0.0/…/..        21 ESE VEC1 22 ESE RMY 22

12/17 The low since midnight is 37F, the daily normal low is 25F

————————————————————–

DECEMBER DAILY RECORDS TO DATE

NONE…

————————————————————–

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

RECORDS FOR DECEMBER 17
HIGH 63 IN 2000
LOW -9 IN 1942
PRECIP 3.03 INS. IN 1888
SNOWFALL 15.1 INS. IN 2020
PEAK GUST 78 MPH SSE IN 2000

RECORDS FOR DECEMBER 18
HIGH 59 IN 1928
LOW -11 IN 1919
PRECIP 1.44 INS. IN 1915
SNOWFALL 7.0 INS. IN 1904
PEAK GUST 76e W IN 1978

TODAY’S REPORT PREPARED BY: Benjamin Turner

Please follow and like us:
error
fb-share-icon
Tweet
fb-share-icon
←
→
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

Ownership and Proprietary Rights

All observational records, compiled datasets, metadata, database structures, and related materials provided by the Blue Hill Observatory & Science Center are the exclusive property of the Blue Hill Observatory & Science Center. The Observatory has maintained continuous weather observations at the summit of Great Blue Hill since 1885, and the entirety of that record — its compilation, structure, curation, and organization — constitutes a proprietary database protected under applicable United States law, including copyright law and common law database protections.

All rights not expressly granted in this Policy are reserved by the Observatory. No access to or use of Observatory data shall be construed as a waiver of any rights or as a license to use data beyond the scope expressly stated herein.

§ 02

Governing Law and Jurisdiction

This Policy shall be governed by and construed in accordance with the laws of the Commonwealth of Massachusetts, without regard to its conflict of law provisions. For interactions with international users, this Policy shall apply to the maximum extent permitted by applicable local law.

Any dispute arising from or related to this Policy shall be subject to the exclusive jurisdiction of the state and federal courts located in Norfolk County, Massachusetts. By accessing Observatory data, all users consent to personal jurisdiction in Massachusetts and waive any objection to the venue or inconvenience of such forum.

§ 03

Permitted Uses

Observatory data are made available for the following limited, non-commercial purposes only:

  • Personal study and analysis
  • Educational classroom use
  • Student projects
  • Non-commercial academic research
  • Publication of analyses, figures, models, or conclusions derived from the data, subject to the attribution requirements of Section 4

All other uses require prior written authorization from the Observatory.

§ 04

Attribution Requirement

Any use of Observatory data in any published, presented, or publicly distributed work must include the following verbatim acknowledgment:

“Data provided by the Blue Hill Observatory & Science Center, Milton, Massachusetts. Continuous weather observations since 1885.”

Failure to include proper attribution is a material violation of this Policy.

§ 05

Prohibited Uses

Unless explicitly authorized in writing, Users may not:

  • Resell, license, sublicense, or commercially exploit Observatory data in any form
  • Redistribute the dataset in whole or in part to any third party
  • Publish the dataset for download by third parties
  • Host, mirror, or archive the dataset on any external website, repository, or storage service
  • Upload the dataset to any public or institutional data repository
  • Provide the data through APIs, automated services, or subscription platforms
  • Incorporate the data into any commercial product, software, application, or service
  • Use the data for AI or machine learning systems intended for commercial use or external distribution
  • Use the data to create derivative datasets that enable reconstruction of the underlying observations
§ 06

Commercial Licensing

Organizations seeking to use Observatory data for commercial purposes must obtain a license prior to any such use. Licensing inquiries: data@bluehill.org.

§ 07

Automated Access

Automated scraping, bulk harvesting, or systematic downloading of Observatory data is strictly prohibited without prior written authorization.

§ 08

Enforcement and Remedies

Violation of this Policy may result in immediate revocation of data access, pursuit of legal remedies available under United States law, and referral to applicable authorities. The Observatory reserves all rights to seek injunctive relief, damages, and attorneys’ fees in connection with any unauthorized use of its data.

Part II — Privacy Policy
§ 09–10

Scope & Information Collected

This section governs the collection, use, storage, and disclosure of personal information from visitors to the Blue Hill Observatory website and users of its data services. The Observatory may collect contact information (name, email, organization) when voluntarily submitted, usage data including IP addresses and pages visited, and data download records.

§ 11–12

How We Use Information & Retention

Information is used solely for: responding to inquiries and licensing requests; monitoring and enforcing compliance with this Policy; improving website performance; and communicating Observatory news to opted-in users. The Observatory does not sell, rent, or share personal information with third parties for marketing purposes. Data access records may be retained indefinitely for compliance and enforcement purposes.

§ 13

International Users and Data Transfers

The Observatory is located in the United States. International users acknowledge their information will be processed in the United States under U.S. law. Users requiring specific data processing agreements under non-US law must contact data@bluehill.org before accessing data.

§ 14–16

Cookies, Security & Children’s Privacy

The Observatory website may use cookies for analytics and functionality. By continuing to use the site, users consent to cookie use. The Observatory implements reasonable measures to protect personal information but cannot guarantee absolute security. Observatory data services are not directed at children under 13.

Part III — General Provisions
§ 17–20

Modifications, Severability, Entire Agreement & Contact

The Observatory reserves the right to modify this Policy at any time. Updated versions will be posted at bluehill.org. Continued use of Observatory data following any modification constitutes acceptance of the revised Policy. This Policy constitutes the entire agreement between the User and the Observatory. Questions and licensing inquiries: Blue Hill Observatory & Science Center, Milton, Massachusetts — data@bluehill.org

By accessing, downloading, or using any Blue Hill Observatory data or services, you acknowledge that you have read, understood, and agree to be bound by this Policy.
Effective January 1, 2025 · Blue Hill Observatory & Science Center · Milton, Massachusetts
↓ Scroll to read the full Policy — the agreement checkbox will unlock at the bottom