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Tuesday, September 17, 2024

September 17, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, SEPTEMBER 17, 2024 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, SEPTEMBER 17, 2024 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0527E SUNSET:  1749E EARLY MORNING FOG QUICKLY BURNS OFF TO MAINLY SUNNY SKIES… We started the day socked in fog with visibility as low as 1/8th of a mile for a time. The fog dissipated on the summit, but remained socked in down below for a time this morning, which created a complete undercast. Only the tops of hills and the very top of a few of the skyscrapers in Boston could be seen. Meanwhile the sky above only had thin scattered cirrus and plenty of sunshine. All of the low clouds and fog quickly dissipated by mid morning leaving us with another splendid early fall day. However cirrus clouds have been increasing and thickening as we progress through the afternoon, filtering the sun quite a bit by the 1pm observation. Temperatures have once again reached above normal levels as readings have reached the low 80s early this afternoon. The dew point started the day on the high side with readings in the upper 50s to near 60, however as we push into the early afternoon hours, values have dropped into the upper 40s thanks to some mixing from aloft. The wind is on the light and variable side again today. The average speed for the day so far is only around 5mph. The peak gust so far is 14mph, which occurred around 1am this morning. Visibility started the day obscured by fog. Once the fog cleared from the summit, the visibility shot up to around 60 miles above the undercast. It has generally held between 50-60 miles for the balance of the day to this point. The maximum temperature so far today is 82F, which is 10 degrees above the normal high of 72F. The minimum temperature since midnight is 55F, which is equal to the normal low of 55F. ————————————————————– Today’s Observations: 7 A.M. Weather: Thin scattered cirrus, complete undercast all quadrants Temperature: 58F; Dew Point: 57F; Relative Humidity: 98% Wind: WNW @ 5 kts, wind light Sea-level pressure: 1025.4 mb; 30.28 in. Hg: rising, then steady Visibility: 1/2 mile, fog, 60 miles above undercast 6-hr Max temp: 5F8 6-hr Min temp: 55F 24-hr Precip:  0.00 inches BHO SA 1155 ///OVC 250 -SCT 1/2F 254/58/57/2905/028/ COMPLETE UNDERCAST ALQDS VSBY 60 ABV UNDERCAST WND LGT/ 8/601 51002 10058 20055 10 A.M. Weather: Thin scattered cirrus Temperature: 73F; Dew Point: 59F; Relative Humidity: 61% Wind: S @ 2 kts, wind light and variable Sea-level pressure: 1024.9 mb; 30.27 in. Hg: steady, then falling Visibility: 50 miles, hazy 3-hr Precip: 0.00 inches BHO SA 1455 250 -SCT 50 249/73/59/1702/027/ HAZY WND L/V/ 8/001 58005 1 P.M. Weather: Broken cirrus Temperature: 82F; Dew Point: 49F; Relative Humidity: 32% Wind: SSW @ 3 kts, wind light Sea-level pressure: 1023.8 mb; 30.23 in. Hg: falling unsteadily Visibility: 60 miles 6-hr Max temp: 82F 6-hr Min temp: 58F 6-hr Precip: 0.00 inches BHO SA 1755 E250 BKN 60 238/82/49/2003/023/ WND LGT/ 8/004 57011 10082 20058 ————————————————————– SUMMARY FOR MONDAY, SEPTEMBER 16, 2024 TEMPERATURE (DEGREES F) MAX…….83  NORMAL…..73 MIN…….55  NORMAL…..56 MEAN……69  NORMAL…..64 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+5 TOTAL DEPARTURE FOR THE MONTH…………………….+13 [+0.6 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025) TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-3 TOTAL HEATING UNITS FOR THE MONTH……………10  DEPARTURE…….-18 TOTAL HEATING UNITS FOR THE SEASON…………..21  DEPARTURE…….-25 TOTAL HEATING UNITS LAST SEASON TO DATE………12  DEPARTURE……..+9 COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024) TOTAL COOLING UNITS FOR YESTERDAY…………….4  DEPARTURE……..+2 TOTAL COOLING UNITS FOR THE MONTH……………51  DEPARTURE……..-5 TOTAL COOLING UNITS FOR THE SEASON………….745  DEPARTURE…….+94 TOTAL COOLING UNITS LAST SEASON TO DATE……..689  DEPARTURE…….+56 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)……….E22 SSW  @   08:09 P.M. VECTOR #1 (1-Sec)……….21 SSW  @   08:09 P.M. VECTOR #2 (1-Sec)……….20 S    @   08:08 P.M. DAVIS #1……………….20 S    @   07:43 P.M. DAVIS #2 ………………21 S    @   06:44 P.M. RMY #1 (Instantaneous)…..21 SSW  @   08:09 P.M. RMY #2 (Instantaneous)…..21 S    @   08:08 P.M. MERLIN…………………19 SSW RICHARDS (C5C) (Inst)…..OTS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………16 SSW  @   08:14 P.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14      @   08:13 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14      @   08:15 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 S    @   08:23 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 S    @   06:54 P.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 SSW  @   08:13 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 S    @   08:15 P.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL……..6.3 SSW [152 total miles] VECTOR #1………………7.1 VECTOR #2………………7.3 DAVIS #1……………….6.7 SSW DAVIS #2……………….6.9 SW RMY #1…………………7.0 SW RMY #2…………………7.3 SW 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…………..0.04 DEPARTURE…..-1.93 TOTAL PRECIPITATION FOR THE YEAR (2024)…….41.25 DEPARTURE…..+4.67 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/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 9/1   82/67/75/+6/T/244/31                28 SSW VEC1 27 SW  RMY 28 9/2   79/56/68/-1/0.00/644/82             31 NNW VEC1 31 NNW RMY 32 9/3   74/49/62/-6/0.00/766/98             23 NW  VEC1 23 NNW RMY 23 9/4   80/56/68/0/0.00/732/94              18 ESE VEC1 19 SE  RMY 18 9/5   77/58/68/0/0.00/737/95              20 ESE VEC1 19 ESE RMY 19 9/6   73/58/66/-2/0.00/240/31             22 E   VEC1 21 ENE RMY 23 9/7   77/56/67/0/0.04/301/39              34 WNW VEC1 31 WNW RMY 33 9/8   70/50/60/-7/0.00/753/98             35 W   VEC1 35 W   RMY 34 9/9   75/51/63/-4/0.00/727/95             31 WNW VEC1 28 WNW RMY 30 9/10  78/56/67/+1/0.00/717/94             21 NW  VEC1 20 SW  RMY 21 9/11  78/53/66/0/0.00/714/94              20 S   VEC1 19 S   RMY 18 9/12  82/58/70/+4/0.00/…/..             20 S   VEC1 19 S   RMY 20 9/13  85/59/72/+7/0.00/…/..             21 SSW VEC1 20 SSW RMY 20 9/14  81/61/71/+6/0.00/…/..             21 ENE VEC1 20 ENE RMY 21 9/15  78/60/69/+4/0.00/…/..             23 SE  VEC1 23 SE  RMY 25 9/16  83/55/69/+5/0.00/…/..             22 SSW VEC1 21 SSW RMY 21 9/17  The low since midnight is 55F, the daily normal low is 55F. ————————————————————– SEPTEMBER DAILY RECORDS TO DATE NONE. ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR SEPTEMBER 17 HIGH 87F IN 2015 LOW 38F IN 1959 PRECIP 2.73 INCHES IN 1933 PEAK GUST 60 MPH WNW IN 1999 RECORDS FOR SEPTEMBER 18 HIGH 88F IN 1906 LOW 36F IN 1919 PRECIP 4.25 INCHES IN 1996 PEAK GUST 77e MPH WNW IN 1948 TODAY’S REPORT PREPARED BY: Matt Douglas
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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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