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Sunday, December 1, 2024

December 1, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, DECEMBER 1, 2024 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, DECEMBER 1, 2024 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0654E SUNSET:  1612E CHILLY AND DRY FOR THE FIRST DAY OF METEOROLOGICAL WINTER…. This morning featured a beautiful orange sunrise with mostly clear skies. We had a brief period mid morning with overcast conditions, but we were able to clear things out again by 1pm. Offshore clouds continued to linger about with ocean-effect convection in the area. Temperatures have stayed below normal all day and the dry air continues to dominate our weather. Dew points have not even reached 20F by our final observation. Winds have remained relatively light again today and mostly out of the west and west southwest direction. The average speed has been around 10mph and our peak gust of 23mph occurred around 9:30am, which was almost identical to yesterday’s wind profile. Visibility has held between 50-60 miles throughout most of the day. The maximum temperature for today is 37F degrees, which is 8 degrees below the normal high of 45F. The minimum temperature since midnight is 23F degrees, which is 6 degrees below the normal low of 29F. ————————————————————– PRELIMINARY STATS FOR NOVEMBER 2024 TEMPERATURE, Deg. F Avg. Max. 54.6 [+4.5] Avg. Min. 37.4 [+3.6] Mean      46.0 [+4.0] 24-hour corrected mean: 45.8 Max. for month: 80F on the 6th Min. for month: 26F on the 30th HEATING DEGREE DAYS Total heating units:    570 [-122] Total for the season:   943 [-261] Total for last season: 1087 COOLING DEGREE DAYS Total cooling units:      5 [+005] Total for the season:   768 [+091] Total for last season:  715 PRECIPITATION, Inches Total: 3.67 [-0.64] Greatest in 24 hrs: 1.61 on the 21st-22nd SNOWFALL, Inches Total: 0.0 [-1.8] Greatest in 24 hrs: 0.0 on the N/A WIND, mph Avg. uncorrected wind speed: 12.5 mph Avg. corrected wind speed:   12.9 mph Prevailing wind direction:   Northwest [22%] Peak gust and direction:  52 WNW on the 24th SUNSHINE: Campbell-Stokes card minutes: 12282 of a possible 17010, or 72% Astronomical total minutes: 12709 of a possible 17592 or 72% ————————————————————– Today’s Observations: 7 A.M. Weather: Clear, few altocumulus/castellanus along horizon all quadrants Temperature: 24F; Dew Point: 18F; Relative Humidity: 79% Wind: W @ 8 kts Sea-level pressure: 1016.3 mb; 30.01 in. Hg: Falling, then rising Visibility: 50 miles 6-hr Max temp: 27F 6-hr Min temp: 23F 24-hr Precip:  0.00 inches 24-hr Snowfall: 0.0 inches Snow Depth: 0 inches BHO SA 1155 CLR 50 163/24/18/2608/001/ FEW AC/ACC ALNG HRZN ALQDS/ 8/080 53007 10027 20023 10 A.M. Weather: Overcast cirrus, few breaks in overcast all quadrants, few cumulus offshore distant NE-E-ESE and moderate cumulus distant SSE-SSW Temperature: 29F; Dew Point: 17F; Relative Humidity: 58% Wind: W @ 8 kts Sea-level pressure: 1016.9 mb; 30.03 in. Hg: rising, then falling Visibility: 60 miles 3-hr Precip:  0.00 inches 3-hr Snowfall: 0.0 inches BHO SA 1455 E250 OVC 60 169/29/17/2608/003/ FEW BINOVC ALQDS FEW CU OFFSHR DSNT NE-E-ESE AND MDT CU OFFSHR DSNT SSE-SSW/ 8/202 50006 1 P.M. Weather: Clear, few stratocumulus WSW-NNE, few cumulus offshore distant E-S-SSW, few cirrus distant E-S-SW Temperature: 36F; Dew Point: 18F; Relative Humidity: 47% Wind: WSW @ 8 kts Sea-level pressure: 1015.1 mb; 29.98 in. Hg: falling, then more slowly Visibility: 50 miles 6-hr Max temp: 37F 6-hr Min temp: 23F 6-hr Precip:  0.00 inches 6-hr Snowfall: 0.0 inches Snow Depth: 0 inches BHO SA 1755 CLR 50 151/36/18/2507/998/ FEW SC WSW-NNE FEW CU OFFSHR DSNT E-S-SSW FEW CI DSNT E-S-SW/ 8/801 56018 10037 20023 ————————————————————– SUMMARY FOR SATURDAY, NOVEMBER 30, 2024 TEMPERATURE (DEGREES F) MAX…….40  NORMAL…..45 MIN…….26  NORMAL…..29 MEAN……33  NORMAL…..37 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-4 TOTAL DEPARTURE FOR THE MONTH……………………+127 [+4.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025) TOTAL HEATING UNITS FOR YESTERDAY……………32  DEPARTURE……..+4 TOTAL HEATING UNITS FOR THE MONTH…………..570  DEPARTURE……-122 TOTAL HEATING UNITS FOR THE SEASON………….943  DEPARTURE……-261 TOTAL HEATING UNITS LAST SEASON TO DATE…….1087  DEPARTURE……-144 COOLING DEGREE DAYS (SEASON: JAN 2024 THRU DEC 2024) TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0 TOTAL COOLING UNITS FOR THE MONTH…………….5  DEPARTURE……..+5 TOTAL COOLING UNITS FOR THE SEASON………….768  DEPARTURE…….+91 TOTAL COOLING UNITS LAST SEASON TO DATE……..715  DEPARTURE…….+53 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)………..23 W    @   09:38 A.M. VECTOR #1 (1-Sec)……….23 W    @   09:38 A.M. VECTOR #2 (1-Sec)……….24 WNW  @   05:05 P.M. DAVIS #1……………….23 W    @   03:02 P.M. DAVIS #2 ………………23 WNW  @   05:10 P.M. RMY #1 (Instantaneous)…..23 WNW  @   05:05 P.M. RMY #2 (Instantaneous)…..25 WNW  @   05:05 P.M. MERLIN…………………22 W RICHARDS (C5C) (Inst)…..OTS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………16 W    @   09:00 P.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16      @   08:27 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18      @   05:41 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 W    @   08:27 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 WNW  @   05:41 P.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 W    @   08:27 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 WNW  @   05:41 P.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL……..10.6 W [254 total miles] VECTOR #1………………10.6 VECTOR #2………………11.0 DAVIS #1……………….11.2 W DAVIS #2……………….11.0 WNW RMY #1…………………10.1 W RMY #2…………………10.8 W RICHARDS (C5C)…………..OTS PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16 TOTAL PRECIPITATION FOR THE MONTH…………..3.67 DEPARTURE…..-0.64 TOTAL PRECIPITATION FOR THE YEAR (2024)…….47.47 DEPARTURE…..-1.00 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.2 TOTAL SNOWFALL FOR THE MONTH………………..0.0 DEPARTURE……-1.8 TOTAL SNOWFALL FOR THE SEASON (2024-2025)…….0.0 DEPARTURE……-2.5 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 11/1   77/49/63/+16/0.00/0.0/347/56       36 WNW VEC1 36 WNW RMY 37 11/2   55/37/46/-1/0.00/0.0/228/37        21 N   VEC1 23 N   RMY 21 11/3   48/30/39/-7/0.00/0.0/595/97        20 NNW VEC1 21 NNW RMY 21 11/4   49/33/41/-5/0.00/0.0/061/10        20 SSE VEC1 21 SSE RMY 21 11/5   73/46/60/+15/0.00/0.0/505/83       35 SW  VEC1 35 SW  RMY 37 11/6   80/59/70/+25/0.00/0.0/558/92       39 WSW VEC1 39 WSW RMY 42 11/7   69/47/58/+13/0.00/0.0/519/86       37 WNW VEC1 35 WNW RMY 42 11/8   63/41/52/+7/0.00/0.0/572/95        42 WNW VEC1 42 WNW RMY 47 11/9   50/36/43/-1/0.00/0.0/599/100       40 NW  VEC1 42 NW  RMY 43 11/10  60/32/46/+2/T/0.0/388/65           29 WSW VEC1 29 SW  RMY 31 11/11  66/50/58/+15/0.08/0.0/457/77       40 SW  VEC1 42 SW  RMY 43 11/12  54/33/44/+1/0.00/0.0/545/92        48 NNW VEC1 50 NNW RMY 56 11/13  43/28/36/-7/0.00/0.0/584/99        32 N   VEC1 33 N   RMY 31 11/14  42/27/35/-7/0.00/0.0/542/92        22 NE  VEC1 22 NE  RMY 22 11/15  58/27/43/+1/0.00/0.0/580/99        28 NW  VEC1 28 NW  RMY 30 11/16  60/38/49/+7/0.00/0.0/572/98        33 NNW VEC1 35 NNW RMY 35 11/17  62/40/51/+10/0.00/0.0/553/95       26 NW  VEC1 26 NW  RMY 26 11/18  61/43/52/+11/T/0.0/418/72          29 NW  VEC1 28 NW  RMY 31 11/19  56/39/48/+7/0.00/0.0/565/98        29 NW  VEC1 29 NW  RMY 30 11/20  52/36/44/+4/T/0.0/564/98           21 E   VEC1 21 E   RMY 21 11/21  44/43/44/+4/1.27/0.0/000/00        51 ENE VEC1 50 ENE RMY 52 11/22  52/40/46/+6/0.55/0.0/372/65        44 E   VEC1 47 E   RMY 45 11/23  44/38/41/+2/0.71/0.0/000/00        46 NW  VEC1 45 NW  RMY 49 11/24  48/35/42/+3/0.00/0.0/523/92        52 WNW VEC1 53 WNW RMY 53 11/25  49/32/41/+2/0.00/0.0/556/98        33 WNW VEC1 34 WNW RMY 34 11/26  44/35/40/+2/0.37/0.0/062/11        28 WNW VEC1 29 NW  RMY 28 11/27  49/33/41/+3/0.00/0.0/513/91        25 W   VEC1 25 W   RMY 25 11/28  45/36/41/+3/0.69/0.0/000/00        35 NW  VEC1 35 NW  RMY 35 11/29  44/32/38/0/0.00/0.0/410/73         36 WNW VEC1 36 WNW RMY 37 11/30  40/26/33/-4/0.00/0.0/521/93        23 W   VEC1 23 W   RMY 23 12/1 The low since midnight is 23F, the daily normal low is 29F. ————————————————————– NOVEMBER DAILY RECORDS TO DATE 11/1 RECORD HIGH TEMPERATURE OF 77F, OLD RECORD WAS 75F IN 2003. 11/6 RECORD HIGH TEMPERATURE OF 80F, OLD RECORD WAS 74F IN 2022. ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR DECEMBER 1 HIGH 70 IN 2001 LOW 3 IN 1887 PRECIP 1.46 INS. IN 1917 SNOW 5.7 INS. IN 2019 PEAK GUST 72 MPH NW IN 1964 RECORDS FOR DECEMBER 2 HIGH 61 IN 1998 LOW 3 IN 1890 PRECIP 2.09 INS. IN 1974 SNOWFALL 5.0 INS. IN 1894, 1929 PEAK GUST 89e MPH SSE IN 1942 TODAY’S REPORT PREPARED BY: Amanda Joly
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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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