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Sunday, December 15, 2013

December 16, 2013

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

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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, DECEMBER 15, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME MESSY STORM PULLS AWAY THIS MORNING FLASH FREEZE OCCURS AS WIND SHIFTS A low pressure area passed just to the east of the region this morning, bringing stormy conditions.  Light snow began early yesterday afternoon and intensified into the evening and overnight hours.  The temperature rose steadily at a rate of about one degree per hour from 5PM yesterday through 7AM this morning.  The temperature rose to the freezing mark by 3AM, and the snow changed to rain as warming continued in the following hours.  By the 7AM observation, 5.9 inches of new snow remained on the ground, but it is likely that some melting occurred after the temperature climbed above freezing, which occurred after 4AM.  The total liquid precipitation through 7AM was 1.33 inches, and an additional 0.10 inches of rain fell after that time.   Winds became stronger out of the E and NE last night and especially this morning.  A peak gust of 48mph occurred around 7:37 A.M.  Winds have calmed considerably early this afternoon. The other big story of today became the flash freeze which occurred around 9:30 this morning.  The temperature dove close to 10 degrees in 20 minutes, freezing the leftover rainfall.  This created a glaze on all surfaces, and made for treacherous conditions outside.  This freeze occurred as a result of a wind shift to the N and NW as the storm pulled away.  The temperature has steadied this afternoon, holding above 20F.  The high temperature for today will likely end up as 36F, which occurred a couple hours before the big temperature drop.  Today will be the 9th consecutive day of below average temperatures here on the summit, and the month is now running close to 3 degrees below average. Today’s Observations: 7 A.M. Weather: Sky obscured by dense fog and light rain Temperature: 36F; Dew Point: 36F; Wind: NE at 23G34 kts, Wind: Peak wind 38 kts ENE at 6:28 A.M. Wind: Direction variable N-E Sea-level pressure: 29.51 ins. Hg, falling rapidly, then falling more slowly Visibility: 1/8 mile, dense fog and light rain 24-hr snowfall: 5.9 inches Snow depth: 7 inches 24-hr precip: 1.33 inches 6-hr precip (ASOS): 0.81 inches 6-hr. min temp: 29F BHO SA 1155 W3 X 1/8R-F 993/36/36/0523G34/951/ TOTAL NEW SNOW PAST 24 HRS 5.9 INS PK WND 0638/28 WND 00V09/ 8//// 4/007 56080 MANUAL 70133 ASOS 70135 ASOS 60081 10036 20029 10 A.M. Weather: Sky partially obscured by fog, overcast nimbostratus, stratus fractus drifting below summit, thin glaze all surfaces, flash freeze past hour Temperature: 24F; Dew Point: 23F; Wind: NW at 18G25 kts, Wind: Peak wind 26 kts NW at 9:30 A.M. Sea-level pressure: 29.45 ins. Hg, falling then rising Visibility: 3/4 miles, fog 3-hr precip: 0.10 inches BHO SA 1455 –X E3 OVC 3/4F 973/24/23/3118G25/945/ F3 STFRA DRFTNG BLO SMT THN GLZ ALL SFCS FLASH FREEZE PST HR PK WND 3226/30 8/72/ 55020 MANUAL 60010 ASOS 60011 1 P.M. Weather: Overcast nimbostratus, thin fog all quadrants, thin glaze all surfaces Temperature: 22F; Dew Point: 20F; Wind: NW at 12 kts Sea-level pressure: 29.46 ins. Hg, rising slightly Visibility: 10 miles, thin fog 6-hr max. temp. 36F 6-hr precip: 0.10 inches BHO SA 1755 E8 OVC 10 977/22/20/3112/946/ TF ALQDS THN GLZ ALL SFCS/ 8/72/ 53004 MANUAL 60010 ASOS 60011 10036 20021 WEATHER SUMMARY FOR SATURDAY, DECEMBER 14, 2013 TEMPERATURE (DEGREES F) MAX…..28    NORMAL…..40 MIN……9    NORMAL…..24 MEAN….19    NORMAL…..32 DEPARTURE FROM 30-YEAR NORMAL…………………-13 TOTAL DEPARTURE FOR THE MONTH…………………-38 [-2.9 DEGREE/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY…………..46  DEPARTURE……..+13 TOTAL HEATING UNITS FOR THE MONTH………….469  DEPARTURE……..+27 TOTAL HEATING UNITS FOR THE SEASON………..1693  DEPARTURE……….0 TOTAL HEATING UNITS LAST SEASON TO DATE……1496  DIFFERENCE……+197 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY………………30 E   AT 10:53 P.M. AERO…………………..26 E   AT 1O:53 P.M. * ASOS…………………..29 E   AT 10:29 P.M. DAVIS………………….27 E   AT 10:53 P.M. RMY N/A FASTEST MILE FOR YESTERDAY………………..22 E   AT 1O:27 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE……………..21 E   AT 11:04 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE…………….21 E   AT 10:54 P.M. AVERAGE WIND SPEED AND DIRECTION………….9.7 NNW ASOS…………………10.2 DAVIS…………………8.5 NE [37 degrees] * last of several occurrences… PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….1.33  DEPARTURE………….+1.17 ASOS…………..1.35 TOTAL PRECIPITATION FOR THE MONTH……….2.62  DEPARTURE………….+0.32 ASOS…………..2.61 TOTAL PRECIPITATION FOR THE YEAR……….49.22  DEPARTURE………….-1.61 ASOS…………..N/A** ** ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M…….5.9     DEPARTURE………….+5.5 TOTAL SNOWFALL FOR THE MONTH………….8.6     DEPARTURE………….+3.7 TOTAL SNOWFALL FOR THE SEASON…………8.8     DEPARTURE………….+1.3 PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ….: Data not yet available, records not finalized 12/1  45/30/38/+1/0.28/T/000/00           22 SSE AERO 23 MPH SSE RMY 23 12/2  38/34/36/0/T/0.0/000/00             15 NW  AERO 15 MPH NW  RMY 16 12/3  45/32/39/+3/0.00/0.0/284/51         18 NNW AERO 18 MPH NNW RMY 20 12/4  43/29/36/+1/0.00/0.0/389/70         21 WNW AERO 21 MPH WNW RMY 21 12/5  53/38/46/+11/0.02/0.0/000/00        36 S   AERO 40 MPH S   RMY 39 12/6  55/33/44/+9/0.38/T/000/00           25 SSW AERO 28 MPH SSW RMY N/A 12/7  40/26/33/-1/0.12/T/287/52           23 NW  AERO 25 MPH NW  RMY N/A 12/8  30/22/26/-8/T/T/039/07              25 NW  AERO 27 MPH NW  RMY N/A 12/9  41/25/33/-1/0.35/0.6/000/00         28 E   AERO 28 MPH E   RMY 24 12/10 33/21/27/-6/0.14/2.1/000/00         28 W   AERO 28 MPH W   RMY 28 12/11 28/19/24/-9/0.00/0.0/345/63         27 SW  AERO 28 MPH SW  RMY 27 12/12 23/14/19/-14/0.00/0.0/…/..        28 WNW AERO 31 MPH NW  RMY 30 12/13 28/14/21/-11/0.00/0.0/…/..        31 W   AERO 32 MPH W   RMY 33 12/14 28/9/19/-13/…./../000/00          30 E   AERO 26 MPH E   RMY N/A 12/15 morning low temp: 28F; the normal low is now 24F DAILY RECORDS FOR DECEMBER 2013 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR DECEMBER 15 HIGH 64 IN 1975 LOW 4 IN 1900, 1905, 1933 PRE 1.80 INS. IN 1981 SNOW 7.5 INS. IN 1951 PEAK GUST 65 MPH NW IN 1991 RECORDS FOR DECEMBER 16 HIGH 61 IN 1971 LOW -2 IN 1930 PRE 1.67 INS. IN 1960 SNOW 8.5 INS. IN 2007 WIND 73 MPH SSE IN 1982 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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