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

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, MAY 18, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME ANOTHER VERY NICE DAY TODAY It has been another pleasant day today, with seasonable temperatures and dry air.  There was been plenty of sunshine this morning, but numerous cumulus and stratocumulus clouds have bubbled up during the late morning and afternoon.  No showers have been produced so far, however.  The wind has been light and variable for most of the day, alternating between a light NW breeze and an easterly sea breeze.  It was a cool start, with the temperature dropping to a low of 47F, and the combination of cloudiness and an occasional sea breeze has only allowed the temperature to rise to 66F for a high so far, which is very close to average.  Visibility has been in the 65-70 mile range today. Today’s Observations: 7 A.M. Weather: Scattered altocumulus, few cumulus fractus all quadrants, cumulus distant SW-NNW, few moderate cumulus W-NW, altostratus distant offshore NE-E, few altocumulus lenticularis NE-E, altocumulus castellanus ENE-E Temperature: 52F; Dew Point: 41F; Wind: NW at 7 kts Sea-level pressure: 30.11 ins. Hg, rising then rising more slowly Visibility: 65 miles, except 40 miles NE-ENE, light distant haze 6-hr max temp: 51F 6-hr min temp: 47F 24-hr precip: Trace BHO SA 1155 100 SCT 65 198/52/41/3207/011/ FEW CUFRA ALQDS CU DSNT SW-NNW FEW MDT CU W-NW AS DSNT OFFSHR NE-E FEW ACSL NE ACC ENE-E LGT DSNT HZ VSBY NE-ENE 40/ 8/280 51013 MANUAL 7000/ 10051 20047 10 A.M. Weather: Scattered stratocumulus cumulogenitus, few altocumulus and altostratus distant offshore NE-E Temperature: 62F; Dew Point: 44F; Wind: NW at 5 kts, Wind: Light and variable Sea-level pressure: 30.11 ins. Hg, rising then falling Visibility: 65 miles, light distant haze BHO SA 1455 35 SCT 65 195/62/44/3105/011/ FEW AC AND AS DSNT OFFSHR NE-E LGT DSNT HZ WND LGT AND VRB/ 8/470 58003 1 P.M. Weather: Broken cumulus and moderate cumulus, few altocumulus cumulogenitus Temperature: 64F; Dew Point: 43F; Wind: NE at 2 kts, Wind: Light and variable Sea-level pressure: 30.06 ins. Hg, falling then falling more rapidly Visibility: 70 miles, light distant haze 6-hr max temp: 66F 6-hr min temp: 52F BHO SA 1755 E55 BKN 70 180/64/43/0402/006/ FEW ACCG LGT DSNT HZ WND LGT AND VRB/ 8/260 58015 10066 20052 WEATHER SUMMARY FOR SATURDAY, MAY 17, 2014 TEMPERATURE (DEGREES F) MAX…..74    NORMAL…..67 MIN…..52    NORMAL…..48 MEAN….63    NORMAL…..57 DEPARTURE FROM 30-YEAR NORMAL…………………….+6 TOTAL DEPARTURE FOR THE MONTH…………………….+71 [+4.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY……………2  DEPARTURE……….-6 TOTAL HEATING UNITS FOR THE MONTH………….110  DEPARTURE………-67 TOTAL HEATING UNITS FOR THE SEASON………..6281  DEPARTURE………+69 TOTAL HEATING UNITS LAST SEASON TO DATE……5663  DIFFERENCE…….+618 COOLING DEGREE DAYS (SEASON JUN-OCT) TOTAL COOLING UNITS FOR YESTERDAY…………..0   DEPARTURE………..0 TOTAL COOLING UNITS FOR THE MONTH………….13   DEPARTURE……….+7 TOTAL COOLING UNITS FOR THE SEASON…………13   DEPARTURE……….+5 TOTAL COOLING UNITS LAST SEASON TO DATE……..3   DIFFERENCE……..+10 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY………………36  SSE  AT  4:02 A.M. * ASOS…………………..40  S    AT  2:45 A.M. DAVIS………………….40  S    AT  2:45 A.M. RMY N/A FASTEST MILE FOR YESTERDAY………………..30  S    AT  5:50 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE……………..28  S    AT  5:48 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE…………….28  SSE  AT  4:03 A.M. AVERAGE WIND SPEED AND DIRECTION………….14.4 WSW ASOS………………….13.2 DAVIS…………………13.2 SSW [211 deg] * Last of several occurrences… PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…Trace  DEPARTURE………….-0.13 ASOS…………..0.00 TOTAL PRECIPITATION FOR THE MONTH……….1.96  DEPARTURE………….-0.12 ASOS…………..1.99 TOTAL PRECIPITATION FOR THE YEAR……….21.08  DEPARTURE………….+0.45 ASOS………….21.52 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……………0.0 TOTAL SNOWFALL FOR THE MONTH…………….0.0  DEPARTURE……………0.0 TOTAL SNOWFALL FOR THE SEASON…………..85.6  DEPARTURE………….+22.9 PRELIMINARY CLIMATE SUMMARY FOR MAY 2014 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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 5/1  64/43/54/+1/0.49/0.0/093/11          32 SSE RMY 36 5/2  68/51/60/+7/T/0.0/457/54             28 W   RMY 29 5/3  66/48/57/+4/0.00/0.0/332/39          21 SW  RMY N/A 5/4  60/47/54/0/0.01/0.0/400/47           51 WNW RMY 54 5/5  64/46/55/+1/T/0.0/592/70             30 NW  RMY 32 5/6  63/42/53/-1/T/0.0/506/59             30 NW  RMY 30 5/7  64/42/55/0/0.00/0.0/850/99           21 WNW RMY 23 5/8  69/48/59/+4/0.00/0.0/612/71          17 SSW RMY 19 5/9  57/51/54/-1/0.05/0.0/000/00          21 S   RMY N/A 5/10 78/57/68/+13/0.10/0.0/043/05         33 S   RMY 37 5/11 79/58/69/+13/0.01/0.0/746/86         30 W   RMY N/A 5/12 85/49/67/+11/0.00/0.0/792/91         39 NE  RMY 42 5/13 54/42/48/-8/0.00/0.0/113/13          32 NE  RMY N/A 5/14 73/42/58/+1/T/ 0.0/613/70            22 S   RMY 24 5/15 77/57/67/+10/T/0.0/140/16            27 S   RMY 33 5/16 73/60/67/+10/…./0.0/…/..         36 S   RMY 41 5/17 74/52/63/+6/…./0.0/…/..          36 SSE RMY N/A 5/18 morning low temp: 47F; the normal low is now 48F DAILY RECORDS FOR MAY 2014 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MAY 18 HIGH 88F IN 1906, 1936, 1986 LOW 35F IN 2002 PRECIP 1.93 INS IN 2007 SNOW TRACE IN 2002 (Ice pellets) PEAK GUST 64 MPH SSW IN 2000 RECORDS FOR MAY 19 HIGH 91F IN 1962 LOW 34F IN 2002 PRECIP 1.54 INCHES IN 1900 PEAK GUST 58 MPH NW IN 1964 TODAY’S REPORT PREPARED BY: Jonathan O’Brien
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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

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
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