Sign In Become a Member
Donate
Daily Discussions

Tuesday, December 20, 2016

December 20, 2016

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

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, DECEMBER 20, 2016 WINDS SHIFT SOUTH, CLOUD COVER INCREASES AS FRONT APPROACHES, FIRST POND FREEZE OF THE SEASON CONFIRMED This morning was another cold start with a low temp. of 13F. Temps rebounded to 30F by 1:00PM, but were still slightly cooler than average.  Visibility was able to improve to 70 miles in all directions as rising temps. helped to dissipate a thin layer of smoke along the horizon.  An approaching front brought us cloudy, afternoon skies and a southerly wind shift during late morning. The first freeze date of the season for both Houghton’s and Ponkapoag Ponds was confirmed to be yesterday, December 19, almost one week and two weeks later, respectively, than their average freeze dates.  The average freeze date for Ponkapoag Pond is December 7, and the average freeze date for Houghton’s Pond is December 13. 7 A.M. Weather: Scattered stratocumulus, few cirrus in all directions Temperature: 13F; Dew Point: 0F; Wind: NNW at 7 kts Sea-level pressure: 30.59 ins. Hg, falling unsteadily Visibility: 40 miles, except 70 miles SSW-N, thin smoke layer along horizon in all directions 6-hr Max temp: 17F 6-hr Min temp: 13F 24-hr precip: 0.00 in. BHO SA 1155 32 SCT 40 360/13/00/3307/059/ FEW CI ALQDS VSBY SSW-N 70 THN K LYR ALQDS ALNG HRZN/ 8/501 57006 10017 20013 10 A.M. Weather: Scattered altocumulus, few cirrus in all directions Temperature: 21F; Dew Point: 7F; Wind: estimated WNW at 3 kts, Wind Speed: Light Sea-level pressure: 30.57 ins. Hg, falling, then more quickly Visibility: 40 miles, except 70 miles SSW-N, thin smoke layer along horizon in all directions, looming on mountains WNW-NW BHO SA 1455 84 SCT 40 352/21/07/E3003/057/ FEW CI ALQDS VSBY SSW-N 70 THN K LYR ALQDS ALNG HRZN WND LGT LOOMING OF MTNS WNW-NW/ 8/031 58008 1 P.M. Weather: Broken stratocumulus, scattered cirrostratus Temperature: 30F; Dew Point: 15; Wind: SSW at 4 kts, Wind Speed: Light Sea-level pressure: 30.44 ins. Hg, falling, then more slowly Visibility: 70 miles 6-hr Max temp: 30F 6-hr Min temp: 13F BHO SA 1755 E24 BKN 250 SCT 70 309/30/15/2004/044/ WND LGT/ 8/508 56043 10030 20013 SUMMARY FOR MONDAY, DECEMBER 19, 2016 TEMPERATURE (DEGREES F) MAX…..30   NORMAL…..38 MIN…..17   NORMAL…..23 MEAN….24   NORMAL…..30 DEPARTURE FROM 30-YEAR NORMAL……………………-6 TOTAL DEPARTURE FOR THE MONTH…………………..-32 [-1.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY…………..41   DEPARTURE……….+6 TOTAL HEATING UNITS FOR THE MONTH………….633   DEPARTURE………+30 TOTAL HEATING UNITS FOR THE SEASON………..1663   DEPARTURE……..-201 TOTAL HEATING UNITS LAST SEASON TO DATE……1391   DIFFERENCE…….+272 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY……………….26 WNW AT 9:16 A.M.* ASOS……………………28 N   AT 9:17 A.M. DAVIS…………………..25 WNW AT 6:20 A.M. RMY 26 FASTEST MILE FOR YESTERDAY…………………20 WNW AT 6:20 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE………………21 NNW AT 6:22 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE……………..20 W   AT 6:22 A.M. AVERAGE WIND SPEED AND DIRECTION………….10.0 WNW ASOS…………………..9.6 DAVIS………………….9.1 WNW [290 Deg.] *last of multiple occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.15 ASOS…………..0.00 TOTAL PRECIPITATION FOR THE MONTH……….1.49  DEPARTURE……-1.59 ASOS…………..1.64 TOTAL PRECIPITATION FOR THE YEAR……….38.46  DEPARTURE…..-13.15 ASOS………….39.07 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.5 TOTAL SNOWFALL FOR THE MONTH…………….6.0  DEPARTURE…….-1.2 TOTAL SNOWFALL FOR THE SEASON……………6.0  DEPARTURE…….-3.8 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 12/1  55/39/47/+10/0.20/0.0/385/69          36 W   AERO 37 W   RMY 36 12/2  48/34/41/+5/0.00/0.0/535/96           32 W   AERO 32 W   RMY N/A 13/3  44/31/38/+2/0.00/0.0/445/80           37 WNW AERO 39 WNW RMY 40 12/4  39/27/33/-2/0.00/0.0/355/64           25 NW  AERO 25 NW  RMY N/A 12/5  36/27/32/-3/0.13/0.4/000/00           26 W   AERO 25 W   RMY 29 12/6  42/30/36/+1/0.00/0.0/392/71           22 W   AERO 21 W   RMY N/A 12/7  39/34/37/+3/0.10/0.0/000/00           21 E   AERO 21 E   RMY N/A 12/8  40/29/35/+1/0.00/0.0/033/06           30 W   AERO 31 W   RMY 33 12/9  35/21/28/-6/0.00/0.0/549/100          35 W   AERO 36 WNW RMY 34 12/10 27/17/22/-11/0.00/0.0/544/99          26 WNW AERO 27 WNW RMY 29 12/11 33/16/25/-8/0.06/0.4/411/75           17 SSW AERO 15 SW  RMY N/A 12/12 41/27/34/+1/0.35/0.9/038/07           29 ESE AERO 29 SE  RMY 30 12/13 41/30/36/+4/0.00/0.0/…/..           25 WSW AERO 25 W   RMY 27 12/14 40/26/33/+1/0.00/0.0/…/..           30 WNW AERO 31 WNW RMY N/A 12/15 29/13/21/-11/T/T/…/..               50 W   AERO 62 W   RMY 56 12/16 18/01/10/-21/0.00/0.0/…/..          39 WNW AERO 51 WNW RMY N/A 12/17 36/18/27/-4/…./4.3/…/..           25 SSW AERO 28 SSW RMY N/A 12/18 55/30/43/+12/…./0.0/…/..          47 WSW AERO 53 S   RMY 53 12/19 30/17/24/-6/0.00/0.0/…/..           26 WNW*AERO 28 NW  RMY 26 12/20 Low temp since midnight is 13F; normal low is now 22F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR DECEMBER 20 HIGH 61 IN 1957 LOW -16 IN 1942 PRECIP 1.69 INS. IN 1936 SNOWFALL 13.7 INS. IN 2009 PEAK GUST 75 MPH S IN 2002 RECORDS FOR DECEMBER 21 HIGH 60 IN 1957 LOW -10 IN 1942 PRECIP 2.01 INS. IN 1946 SNOWFALL 11.4 INS. IN 1954 PEAK GUST 77 MPH SSE IN 1957 TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
facebookShare on Facebook
TwitterPost on X
FollowFollow us
PinterestSave
←
→
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
Main Menu