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Sunday, March 31, 2024

March 31, 2024

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, MARCH 31, 2024 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, MARCH 31, 2024 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0527E SUNSET:  1810E MARCH IS GOING OUT LIKE A LAMB ON THIS EASTER SUNDAY… Happy Easter! It’s a rather nice day as the month ends on a quiet note. Sunshine mixed with various clouds types is making for a decorated sky. Considering the wet weather we had recently, yesterday and today have been a very nice treat, especially for over a weekend! Temperatures are above normal for the date, so this just adds to the enjoyment of the day. Readings rose rapidly this morning, reaching into the upper 50s by early this afternoon. Winds were on the light side early this morning, but have become a bit brisk as we approached and, then entered the afternoon hours. The increase in wind is due to mixing from aloft. Gusts have reached between 25-30mph so far. The average speed to this point is only around 8mph however. As the air is dry, visibility has been great today, generally holding between 70-80 miles all day! The maximum temperature so far today is 59F degrees, which is 10 degrees above the normal high of 49F. The minimum temperature since midnight is 39F degrees, which is 7 degrees above the normal low of 32F. It should come as no surprise that March has been quite wet! Through yesterday, we have received 9.49″ for the month to date. This places us at the 6th wettest March on record. See below for the rankings as compiled by our Chief Scientist, Mike Iacono. BHO Highest March Precipitation, inches (1886-2024): 1) 18.81 in 2010 2) 13.07 in 2001 3) 10.96 in 1968 4) 10.02 in 1983 5) 9.53 in 1953 6) 9.49 in 2024 (through 3/30) 7) 9.00 in 1984 8) 8.72 in 1993 9) 8.68 in 2018 10) 8.09 in 1956 Despite a February that was quite dry, the combination of a wet January and March have also placed us within the top 10 for wettest Jan-Mar periods. With a total of 20.05″ since January 1st as of 7am this morning, this lands us in 6th place for record wettest January- March. Below are the rankings, again compiled by our Chief Scientist, Mike Iacono. BHO Highest Jan-Mar Precipitation, inches (1886-2024): 1) 27.91 in 2010 2) 23.18 in 1956 3) 21.70 in 1983 4) 21.21 in 1958 5) 21.03 in 1953 6) 20.05 in 2024 (through 3/30) 7) 20.00 in 1998 8) 19.70 in 1936 9) 19.61 in 1984 10) 19.53 in 1999 ————————————————————– Today’s Observations: 7 A.M. Weather: Broken altocumulus, overcast altostratus, few breaks in overcast distant W-NNE and distant ENE-SE, virga distant NNE-NE Temperature: 40F; Dew Point: 24F; Relative Humidity: 51% Wind: NNW @ 5 kts, wind light Sea-level pressure: 1009.8 mb; 29.82 in. Hg: steady, then rising Visibility: 80 miles 6-hr Max temp: 43F 6-hr Min temp: 39F 24-hr Precip:  0.00 inches 24-hr Snowfall: 0.0 inches Snow Depth: 0 inches BHO SA 1155 E70 BKN 90 OVC 80 098/40/24/3405/982/ FEW BINOVC DSNT W-NNE AND DSNT ENE-SE VIRGA DSNT NNE-NE WND LGT/ 8/07/ 53023 10043 20039 10 A.M. Weather: Scattered stratocumulus, thin broken cirrus Temperature: 49F; Dew Point: 28F; Relative Humidity: 43% Wind: WNW @ 9G15 kts Sea-level pressure: 1010.0 mb; 29.83 in. Hg: rising, then falling Visibility: 70 miles 3-hr Precip:  0.00 inches 3-hr Snowfall: 0.0 inches BHO SA 1455 45 SCT 250 -BKN 70 100/49/28/2909G15/983/ 8/501 50002 1 P.M. Weather: Scattered stratocumulus, broken cirrus Temperature: 57F; Dew Point: 29F; Relative Humidity: 34% Wind: NW @ 16G25 kts, peak wind W 31mph @ 12:08pm Sea-level pressure: 1009.5 mb; 29.81 in. Hg: rising, then falling Visibility: 70 miles 6-hr Max temp: 59F 6-hr Min temp: 40F 6-hr Precip:  0.00 inches 6-hr Snowfall: 0.0 inches Snow Depth: 0 inches BHO SA 1755 55 SCT 250 BKN 70 095/57/29/3116G25/981/ PK WND 2827/08/ 8/504 58005 10059 20040 ————————————————————– SUMMARY FOR SATURDAY, MARCH 30, 2024 TEMPERATURE (DEGREES F) MAX…….55   NORMAL…..49 MIN…….34   NORMAL…..31 MEAN……45   NORMAL…..40 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………+5 TOTAL DEPARTURE FOR THE MONTH………………….+151 [+4.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024) TOTAL HEATING UNITS FOR YESTERDAY……………20  DEPARTURE……..-5 TOTAL HEATING UNITS FOR THE MONTH…………..737  DEPARTURE……-153 TOTAL HEATING UNITS FOR THE SEASON…………4625  DEPARTURE……-697 TOTAL HEATING UNITS LAST SEASON TO DATE…….4506  DEPARTURE……+119 PEAK WIND GUST (MPH): Note: Instruments designated #1 = Main Tower, #2 = South Tower, F420C, Contacting, Merlin, and Richards are all Main Tower. E=Estimated F420C (Official)……….E45 NW   @  07:35 A.M. VECTOR #1 (1-Sec)……….44 NW   @  07:23 A.M. VECTOR #2 (1-Sec)……….48 NW   @  07:23 A.M. DAVIS #1……………….43 WNW  @  08:11 A.M. DAVIS #2 ………………41 NW   @  07:58 A.M. RMY #1 (Instantaneous)…..47 NW   @  07:55 A.M. RMY #2 (Instantaneous)…..48 NW   @  07:23 A.M. MERLIN…………………42 NW RICHARDS (C5C) (Inst)……46      @  07:55 A.M. FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………30 WNW  @  08:03 A.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..28      @  07:56 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..32      @  08:06 A.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………30 WNW  @  07:53 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………31 NW   @  08:06 A.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..28 NW   @  08:01 A.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..31 WNW  @  08:06 A.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………28      @  08:01 A.M. AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL……16.9 WNW [406 total miles] VECTOR #1…………….16.0 VECTOR #2…………….17.8 DAVIS #1……………..16.9 WNW DAVIS #2……………..17.5 NW RMY #1……………….15.3 WNW RMY #2……………….17.3 WNW RICHARDS (C5C)………..16.3 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17 TOTAL PRECIPITATION FOR THE MONTH…………..9.49 DEPARTURE…..+4.14 TOTAL PRECIPITATION FOR THE YEAR (2024)…….20.05 DEPARTURE…..+6.20 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.2 TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE…..-14.7 TOTAL SNOWFALL FOR THE SEASON (2023-2024)……26.1 DEPARTURE…..-40.5 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR MARCH 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 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) 3/1   41/18/30/-1/0.00/0.0/649/96         30 NW  VEC1 30 WNW RMY 33 3/2   50/32/41/+9/1.16/0.0/000/00         44 SSE VEC1 46 SE  RMY 42 3/3   55/42/49/+17/0.24/0.0/130/19        32 SSE VEC1 33 SSE RMY 32 3/4   49/36/43/+11/0.01/0.0/116/17        24 ENE VEC1 22 ENE RMY 23 3/5   42/36/39/+7/0.14/0.0/000/00         21 E   VEC1 21 E   RMY 21 3/6   51/39/45/+12/0.44/0.0/000/00        28 NE  VEC1 28 NE  RMY 29 3/7   42/37/40/+7/1.06/0.0/000/00         44 NNE VEC1 44 NNE RMY 42 3/8   45/32/39/+6/0.00/0.0/682/98         35 NNE VEC1 36 NNE RMY 38 3/9   40/32/36/+3/0.21/0.0/000/00         32 E   VEC1 32 E   RMY 31 3/10  51/36/44/+10/1.07/0.0/245/35        45 WNW VEC1 46 SE  RMY 45 3/11  43/30/37/+3/T/T/515/73              53 NW  VEC1 54 NW  RMY 58 3/12  54/33/44/+10/0.00/0.0/680/96        43 NW  VEC1 41 NW  RMY 45 3/13  54/33/44/+10/0.00/0.0/667/94        26 SSE VEC1 25 NNW RMY 25 3/14  58/36/47/+12/0.00/0.0/627/88        23 ENE VEC1 22 NE  RMY 21 3/15  44/37/41/+6/0.02/0.0/000/00         24 N   VEC1 23 NNW RMY 25 3/16  58/36/47/+12/0.00/0.0/510/71        29 S   VEC1 26 S   RMY 26 3/17  59/40/50/+14/0.04/0.0/390/54        38 NW  VEC1 38 NW  RMY 40 3/18  49/33/41/+5/0.00/0.0/558/77         38 W   VEC1 37 W   RMY 38 3/19  46/30/38/+2/0.00/0.0/575/79         44 NW  VEC1 43 NW  RMY 46 3/20  51/29/40/+3/0.11/T/190/26           50 WNW VEC1 50 WNW RMY 51 3/21  38/24/31/-6/T/T/704/96              53 WNW VEC1 53 WNW RMY 52 3/22  40/21/31/-6/T/T/427/58              29 WNW VEC1 29 WNW RMY 32 3/23  44/30/37/-1/2.49/T/000/00           48 NNW VEC1 47 NNW RMY 51 3/24  41/23/32/-6/0.00/0.0/460/62         38 NNW VEC1 39 NNW RMY 42 3/25  39/31/25/-3/0.00/0.0/343/46         41 ENE VEC1 41 NE  RMY 40 3/26  36/32/34/-5/0.15/0.0/000/00         38 NE  VEC1 38 NE  RMY 39 3/27  53/36/45/+6/0.10/0.0/038/05         23 NE  VEC1 24 NE  RMY 23 3/28  49/42/46/+7/1.72/0.0/000/00         23 NNW VEC1 23 NNW RMY 22 3/29  50/34/42/+2/0.53/T/136/18           48 NW  VEC1 48 NW  RMY 52 3/30  55/34/45/+5/0.00/0.0/729/96         45 NW  VEC1 44 NW  RMY 47 3/31 The low since midnight is 39F, the daily normal low is 32F. ————————————————————– MARCH DAILY RECORDS TO DATE NONE… ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR MARCH 31 HIGH 89 IN 1998  [RECORD HIGH FOR MONTH] LOW 16 IN 1923 PRECIP 2.89 IN 1987 SNOWFALL 15.0 IN 1997 PEAK GUST 81 MPH SSE IN 1987 RECORDS FOR APRIL 1 HIGH 74 IN 1967 LOW 6 IN 1923 [RECORD FOR MONTH] PRECIP 3.47 IN. IN 2004 [RECORD FOR MONTH] SNOWFALL 15.0 IN. IN 1997 [RECORD FOR MONTH] PEAK GUST 75 MPH SSW IN 1962 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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