Sign In Become a Member
Donate
Daily Discussions

Monday, January 27, 2025

January 27, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, JANUARY 27, 2025 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

MONDAY, JANUARY 27, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0703E
SUNSET:  1652E

PLENTY OF SUNSHINE TODAY WITH SLIGHTLY ABOVE NORMAL TEMPERATURES AND
AN EARTHQUAKE…

Skies have been mainly clear today, save for a few distant clouds early
this morning that have since dissipated or moved well out to sea. By
the 10am observation, not one cloud was observed anywhere in the sky,
yielding a rare perfectly clear for that observation! However, some
cirrus are showing up again well in the distance to the northwest
through north-northeast early this afternoon.

We also observed the earthquake that occurred around 10:22am this
morning. A 3.8 magnitude earthquake centered about 6 miles offshore
of York Harbor, Maine, was felt across many parts of New England. Here
on the summit of Blue Hill it manifested as a loud rumbling sound,
similar to what would be heard if an F-16 fighter jet flew by. Also,
the entire building vibrated with a rattling sound being heard coming
from the wind rack in the weather office. Due to the thickness of the
hill and it’s composition of mainly granite, shaking or swaying is not
a typical phenomenon here on the summit in an earthquake, unless it’s a
very strong one.

Temperatures have pushed into the mid 30s early this afternoon, which,
much like yesterday, is being accompanied by gusty winds. So while it’s
warmer than was all of last week, the wind is keeping the chill values
in the low to mid 20s. Plus the dew point has dropped back into the
low to mid teens, so the air mass is quite dry, adding to the chilly
feeling in the air.

Winds have become quite gusty again today. A mainly westerly wind has
been averaging around 13mph for the day so far. Gusts have been reaching
the 30mph mark, with a peak gust so far of 31mph occurring at 1:09pm.

Visibility is better today than it’s been in a couple of days, with
the view ranging from 40-60 miles today.

The maximum temperature for today is 37F degrees, which is 3 degrees
above the normal high of 34F. The minimum temperature since midnight
is 22F degrees, which is 5 degrees above the normal low of 17F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant NE-E, few altocumulus
distant NNE, few cirrostratus distant E-S-SW
Temperature: 22F; Dew Point: 13F; Relative Humidity: 67%
Wind: W @ 12G23 kts
Sea-level pressure: 1015.1 mb; 29.98 in. Hg: falling, then steady
Visibility: 40 miles, hazy
6-hr Max temp: 26F
6-hr Min temp: 22F
24-hr Precip:  0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1155 CLR 40 151/22/13/2812G23/998/ FEW SC DSNT NE-E FEW AC DSNT
NNE FEW CS DSNT E-S-SW HAZY/ 8/558 4/003 56008 10026 20022

10 A.M.
Weather: Clear
Temperature: 29F; Dew Point: 14F; Relative Humidity: 53%
Wind: W @ 14G24 kts
Sea-level pressure: 1014.2 mb; 29.95 in. Hg: falling steadily
Visibility: 50 miles
3-hr Precip:  0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 50 142/29/14/2714G24/995/ 8/000 57009

1 P.M.
Weather: Clear, few cirrus distant NW-NNE
Temperature: 37F; Dew Point: 16F; Relative Humidity: 42%
Wind: WSW @ 17G25 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 37F
6-hr Min temp: 22F
6-hr Precip:  0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1755 CLR 60 108/37/16/2417G25/985/ FEW CI DSNT NW-NNE/
8/001 4/003 58034 10037 20022

————————————————————–

SUMMARY FOR SUNDAY, JANUARY 26, 2025

TEMPERATURE (DEGREES F)
MAX…….39   NORMAL…..34
MIN…….21   NORMAL…..17
MEAN……30   NORMAL…..26

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+4
TOTAL DEPARTURE FOR THE MONTH…………………….-36 [-1.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………35  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH………….1031  DEPARTURE…….+33
TOTAL HEATING UNITS FOR THE SEASON…………2963  DEPARTURE……-245
TOTAL HEATING UNITS LAST SEASON TO DATE…….2795  DEPARTURE……+168

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

F420C (Official)………..48 W    @   01:07 P.M.
VECTOR #1 (1-Sec)……….48 W    @   01:07 P.M.
VECTOR #2 (1-Sec)……….48 WNW  @   11:57 A.M.
DAVIS #1……………….48 W    @   01:07 P.M.
DAVIS #2 ………………45 WNW  @   01:08 P.M.
RMY #1 (Instantaneous)…..50 W    @   01:07 P.M.
RMY #2 (Instantaneous)…..48 WNW  @   11:57 A.M.
MERLIN…………………46 W
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………34 WNW  @   12:09 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..32      @   01:08 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..33      @   01:08 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………34 W    @   01:08 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………33 WNW  @   01:08 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..30 W    @   01:08 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..32 W    @   01:08 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..16.3 W [391 total miles] VECTOR #1………………15.9
VECTOR #2………………16.4
DAVIS #1……………….16.4 W
DAVIS #2……………….16.4 W
RMY #1…………………15.2 WSW
RMY #2…………………16.2 WSW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..1.52 DEPARTURE…..-2.29
TOTAL PRECIPITATION FOR THE YEAR (2025)……..1.52 DEPARTURE…..-2.29

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.7
TOTAL SNOWFALL FOR THE MONTH………………..7.4 DEPARTURE……-7.8
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……20.0 DEPARTURE…..-10.3

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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

1/1    47/36/42/+13/0.55/0.0/000/00       44 W   VEC1 45 W   RMY 44
1/2    42/31/37/+9/T/T/534/97             60 W   VEC1 60 WNW RMY 63
1/3    36/26/31/+3/0.00/0.0/446/81        48 W   VEC1 48 W   RMY 51
1/4    29/22/26/-2/0.00/0.0/453/82        43 NW  VEC1 43 NW  RMY 48
1/5    32/18/25/-3/0.00/0.0/088/16        39 WNW VEC1 39 WNW RMY 40
1/6    23/15/19/-9/0.00/0.0/000/00        31 NNW VEC1 31 NNW RMY 31
1/7    24/11/18/-9/T/T/450/81             43 WNW VEC1 42 WNW RMY 47
1/8    27/14/21/-6/0.00/0.0/550/99        48 WNW VEC1 48 WNW RMY 52
1/9    25/13/19/-8/T/T/223/40             46 NW  VEC1 47 NW  RMY 51
1/10   40/19/30/+3/0.00/0.0/560/100       39 NW  VEC1 39 NW  RMY 42
1/11   30/21/26/-1/0.12/1.7/000/00        25 NW  VEC1 26 NW  RMY 28
1/12   36/19/28/+1/0.00/0.0/556/99        35 NNW VEC1 35 NNW RMY 39
1/13   39/26/33/+7/0.00/0.0/192/34        26 WNW VEC1 27 WNW RMY 27
1/14   32/20/26/0/0.00/0.0/537/95         44 WNW VEC1 44 WNW RMY 45
1/15   29/16/23/-3/0.00/0.0/504/89        37 NW  VEC1 37 NW  RMY 38
1/16   30/13/22/-4/T/T/301/53             20 W   VEC1 20 SSW RMY 20
1/17   35/16/26/0/T/T/410/72              20 S   VEC1 20 SSW RMY 20
1/18   44/27/36/+10/0.26/0.0/046/08       36 S   VEC1 37 S   RMY 39
1/19   43/27/35/+9/0.51/4.6/276/48        26 N   VEC1 28 NNW RMY 29
1/20   27/9/18/-8/0.08/1.1/460/80         32 NW  VEC1 32 NW  RMY 36
1/21   18/6/12/-14/0.00/0.0/173/30        21 W   VEC1 21 WNW RMY 21
1/22   21/2/12/-14/0.00/0.0/545/94        20 NNW VEC1 20 NNW RMY 20
1/23   30/12/21/-5/0.00/0.0/…/..        29 SW  VEC1 29 SW  RMY 30
1/24   32/14/23/-3/0.00/0.0/…/..        21 W   VEC1 22 WNW RMY 22
1/25   29/11/20/-6/0.00/0.0/…/..        26 W   VEC1 26 W   RMY 27
1/26   39/21/30/+4/0.00/0.0/…/..        48 W   VEC1 48 W   RMY 50

1/27 The low since midnight is 22F, the daily normal low is 17F.

————————————————————–

JANUARY DAILY RECORDS TO DATE

NONE.

————————————————————–

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

RECORDS FOR JANUARY 27
HIGH 63F IN 1974
LOW -12F IN 1924
PRECIP 1.94 INS. IN 2015
SNOWFALL 25.2 INS. IN 2015 [RECORD FOR MONTH] PEAK GUST 91 MPH SSE IN 1996

RECORDS FOR JANUARY 28
HIGH 59F IN 1916
LOW -9F IN 1888, 1924
PRECIP 2.18 INS. IN 1897
SNOWFALL 15.0 INS. IN 1897
PEAK GUST 78e MPH SSE IN 1977

TODAY’S REPORT PREPARED BY: Matt Douglas

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