Sign In Become a Member
Donate
Daily Discussions

Tuesday, January 7, 2020

January 7, 2020

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JANUARY…

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JANUARY 7, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

QUIET AND COOL WITH INCREASING CLOUDS…

Another ho-hum day here at the observatory with light wind and
increasing cloud cover as we move through the early afternoon.

Visibility has been excellent today at 70 miles.

The high temperature today has been 37F. This is 3 degrees above
the daily normal maximum of 34F. The low since midnight is 29F,
which is 11 degrees above the normal low of 18F.

Today’s Observations:

7 A.M.
Weather: Scattered cirrostratus, thin broken cirrus, few stratocumulus
offshore distant NE-ESE and distant SSE-SSW
Temperature: 30F; Dew Point: 17F; Wind: WSW at 10 kts
Sea-level pressure: 30.04 ins. Hg, rising steadily
Visibility: 60 miles
6-hr Max temp: 32F
6-hr Min temp: 29F
24-hr Precip:   Trace
24-hr Snowfall: Trace
BHO SA 1155 250 SCT E300 –BKN 60 172/30/17/2410/004/ FEW SC OFFSHR
DSNT NE-ESE AND DSNT SSE-SSW/ 8/508 51017 70000 10032 20029

10 A.M.
Weather: Broken cirrocumulus, thin broken cirrus, few stratocumulus
distant W-N and offshore distant NE-ESE
Temperature: 33F; Dew Point: 21F; Wind: SW at 8 kts
Sea-level pressure: 30.07 ins. Hg, rising, then more slowly
Visibility: 70 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E200 BKN 250 –BKN 70 184/33/21/2208/007/ FEW SC DSNT W-N
AND OFFSHR DSNT NE-ESE/ 8/509 51012

1 P.M.
Weather: Broken cirrocumulus, thin broken cirrus, few stratocumulus
distant NW-NE-E
Temperature: 36F; Dew Point: 18F; Wind: W at 8 kts
Sea-level pressure: 30.01 ins. Hg, falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 37F
6-hr Min temp: 29F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 E180 BKN 250 –BKN 70 161/36/18/2608/001/ FEW SC DSNT
NW-NE-E/ 8/509 58023 10037 20029

SUMMARY FOR MONDAY, JANUARY 6, 2020

TEMPERATURE (DEGREES F)
MAX…..33   NORMAL…..34
MIN…..23   NORMAL…..18
MEAN….28   NORMAL…..26

DEPARTURE FROM 30-YEAR NORMAL………………… +2
TOTAL DEPARTURE FOR THE MONTH…………………+56 [+9.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………37  DEPARTURE……. -2
TOTAL HEATING UNITS FOR THE MONTH…………..176  DEPARTURE…….-56
TOTAL HEATING UNITS FOR THE SEASON…………2427  DEPARTURE……-109
TOTAL HEATING UNITS LAST SEASON TO DATE…….2473  DEPARTURE…….-46

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..26 W   AT  8:49 P.M.
AERO…………………….21 W   AT  8:55 P.M.
ASOS…………………….25 W   AT  8:55 P.M.
DAVIS……………………27 W   AT  8:48 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….24 W   AT  8:54 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….20 W   AT  8:55 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………21 W   AT  8:47 P.M.
AVERAGE WIND SPEED AND DIRECTION………….. 7.7 SW
ASOS………………….. 8.2
DAVIS…………………. 7.8 WSW [235 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…TRACE  DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.30  DEPARTURE……-0.56
ASOS…………..0.31
TOTAL PRECIPITATION FOR THE YEAR………..0.30  DEPARTURE……-0.56
ASOS…………..0.31

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..TRACE  DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH…………….0.5  DEPARTURE…….-2.8
TOTAL SNOWFALL FOR THE SEASON…………..20.5  DEPARTURE…….+1.2

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

12/01  32/16/24/-13/…./5.8/011/02           33 ENE AERO 32 ENE RMY N/A
12/02  37/25/31/-5/…./2.7/000/00            52 NE  AERO 47 NE  RMY 53
12/03  30/23/27/-9/…./4.6/000/00            32 N   AERO 35 N   RMY 36
12/04  34/22/28/-7/…./0.0/000/00            23 WNW AERO 23 NNW RMY N/A
12/05  41/26/34/-1/…./0.0/343/62            33 NW  AERO 35 NW  RMY 37
12/06  33/23/28/-7/0.02/0.1/000/00            25 NW  AERO 23 NW  RMY 29
12/07  31/18/25/-9/0.00/0.0/519/94            25 NW  AERO 23 NW  RMY N/A
12/08  36/15/26/-8/0.00/0.0/402/73            31 SSW AERO 32 SSW RMY N/A
12/09  57/36/47/+13/…./0.0/000/00           53 S   AERO 52 S   RMY 54
12/10  58/37/48/+15/…./0.0/044/08           35 SW  AERO 39 SW  RMY N/A
12/11  36/23/30/-3/…./3.0/236/43            25 NW  AERO 25 NW  RMY N/A
12/12  29/17/23/-10/…./1.8/488/89           29 W   AERO 30 W   RMY 25
12/13  46/22/34/+2/…./0.0/000/00            25 SSE AERO 25 SSE RMY N/A
12/14  58/46/52/+20/…./0.0/000/00           45 S   AERO 41 S   RMY N/A
12/15  48/28/38/+6/0.00/0.0/284/52            53 W   AERO 53 W   RMY 50
12/16  30/25/28/-3/0.00/0.0/000/00            36 W   AERO 36 W   RMY N/A
12/17  35/23/29/-2/…./1.0/000/00            22 NNW AERO 21 NE  RMY 23
12/18  33/18/26/-5/…/0.0/229/42             44 WNW AERO 45 WNW RMY N/A
12/19  20/9/15/-15/…/0.0/534/98             51 W   AERO 47 W   RMY N/A
12/20  29/11/20/-10/0.00/0.0/540/99           32 W   AERO 30 W   RMY 29
12/21  31/16/24/-6/0.00/0.0/163/30            16 SSE AERO 15 SSE RMY N/A
12/22  40/26/33/+4/0.00/0.0/212/39           23 SW  AERO 21 SW  RMY 23
12/23  54/33/44/+15/0.00/0.0/540/99          30 WSW AERO 30 SW  RMY 30
12/24  42/29/36/+7/0.00/0.0/507/93           30 NW  AERO 27 NW  RMY 30
12/25  42/25/34/+6/0.00/0.0/289/53           16 NNE AERO 16 N   RMY N/A
12/26  39/29/34/+6/0.00/0.0/174/32           22 ENE AERO 20 ENE RMY 22
12/27  47/31/39/+11/0.00/0.0/000/00          32 SSW AERO 30 SSW RMY 34
12/28  47/30/39/+11/0.00/0.0/470/86          23 W   AERO 22 W   RMY N/A
12/29  42/28/35/+8/…./0.0/383/70           22 WNW AERO 21 WNW RMY 23
12/30  36/32/34/+7/…./0.8/000/00           40 E   AERO 37 E   RMY 37
12/31  40/32/36/+9/…./0.0/000/00           35 E   AERO 32 E   RMY N/A

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

01/01  38/30/34/+7/…./0.0/…./..           39 W   AERO 38 W   RMY 41
01/02  46/29/38/+11/0.00/0.0/…./..          28 SW  AERO 28 SW  RMY 30
01/03  46/40/43/+17/0.00/0.0/…./..          21 SW  AERO 18 SW  RMY N/A
01/04  46/36/41/+15/…./0.0/…./..          16 NNW AERO 16 NNW RMY N/A
01/05  36/24/30/+4/…./0.5/…./..           43 NW  AERO 46 NW  RMY 43
01/06  33/23/28/+2/T/T/…./..                26 W   AERO 21 W   RMY N/A

01/07  The low since midnight is 29F, daily normal minimum is 18F

DAILY RECORDS FOR DECEMBER

12/01/19: DAILY RECORD SNOWFALL OF 5.8 INS.,
BREAKS PREVIOUS RECORD OF 2.0 INS. SET IN 1902.

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

RECORDS FOR JANUARY 7
HIGH 60F IN 1930
LOW -8F IN 2018
PRECIP 1.97 INS. IN 1977
SNOWFALL 16.0 INS. IN 1977
PEAK GUST 74 MPH NW IN 1968

RECORDS FOR JANUARY 8
HIGH 65F IN 2008
LOW -8F IN 1968
PRECIP 1.70 INS. IN 1958,1979
SNOWFALL 12.5 INS. IN 1996
PEAK GUST 77 MPH NNW IN 1958

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