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Friday, April 4, 2014

April 4, 2014

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

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, APRIL 4, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME CLOUDS THICKENING AND LOWERING AHEAD OF OUR FIRST APRIL SHOWERS Clouds were on the increase this morning as altocumulus and cirrus fibratus gradually overspread the sky with generally hazy conditions keeping visibilities to 30 miles on average. By 1:00 PM the layer of altocumulus had overspread the sky to nearly become overcast with some cumulus forming distant to the NNW-ESE. A daytime maximum of 46F had been reached prior to the 1:00 PM EST observation. Preliminary statistics for March reveal a colder and less snowy than average month. With a mere 3.0 inches of frozen precipitation falling for the entire month, this left the month 9.7 inches behind the 30-year norm for March snowfall. With an average daily minimum temperature of 22.0 F, this represents the coldest average since 1960 and 10th coldest March average daily minimum since records began at Blue Hill. BHO COLDEST MARCH AVERAGE MINIMUM TEMPERATURE deg. F (1885-2014) 1) 15.1 in 1885 2) 19.1 in 1916 3) 20.5 in 1887 20.5 in 1923 5) 20.9 in 1900 6) 21.0 in 1896 7) 21.2 in 1950 21.2 in 1960 9) 21.3 in 1888 10)22.0 in 2014 A corrected average speed of 13.1 mph also has historic significance, as it ranks as the 3rd least windy March on record. BHO SLOWEST MARCH WIND SPEED mph (1885-2014) 1)12.1 in 1995 2)12.8 in 2012 3)13.1 in 2014 4)13.2 in 2009 5)13.4 in 2013 MARCH 2014 PRELIMINARY STATISTICS [Departures are relative to the 1981-2010 averages] TEMPERATURE: Deg. F Avg. Max. 40.5 [-3.8] Avg. Min. 22.0 [-4.6] Mean      31.3 [-4.2] 24-hr. corrected mean: 31.1 Max. temp: 57 on the 28th Min. temp: 6 on the 4th Total heating degree day units: 1,036 [+120] Total seasonal heating units:  5,627  [+143] [Season starts 7/1] Seasonal total this date 2012: 5,020 [+607] PRECIPITATION: Inches Total: 5.03 [-0.55] Greatest in 24 hours: TBD (TBD) Total snowfall: 3.0 inches [-9.7] Greatest in 24 hours:  1.4 inches on the 13th WIND Av. speed (uncorrected): 12.7 mph Av. speed (corrected):   13.1 mph Prevailing direction: NW @ 13% possible SUNSHINE Total astronomical minutes: 10,395 of possible 22,247 or 47% Total Campbell Stokes card minutes; 10,056 of possible 21,516 or 47% [-2%] More data will be made available in the next few days… Today’s Observations: 7 A.M. Weather: Scattered altocumulus, broken cirrus fibratus Temperature: 38F; Dew Point: 28F; Wind: ENE at 9 kts, Sea-level pressure: 30.15 ins. Hg, rising, then more quickly Visibility: 30 miles, haze distant in all directions, 45 miles N-ENE 6-hr max temp: 39F 6-hr min temp: 35F 24-hr precip: None BHO SA 1155 140 SCT E250 BKN 30 210/38/28/0609/015/ HZ DSNT ALQDS VSBY N-ENE 45 MI/ 8/072 53009 10039 20035 10 A.M. Weather: Few stratocumulus distant NNE-ENE and NNW, scattered altocumulus/altocumulus lenticularis, broken cirrus fibratus growing more dense Temperature: 43F; Dew Point: 28F; Wind: ENE at 11G18 kts, Sea-level pressure: 30.14 ins. Hg, steady, then falling Visibility: 30 miles, distant haze all quadrants, 45 miles NNE-ESE BHO SA 1455 140 SCT E250 BKN 30 206/43/28/0711G18/014/ FEW SC DSNT NNE-ENE AND NNW ACSL DSNT W HZ DSNT ALQDS VSBY NNE-ESE 45 MI/ 8/074 58004 1 P.M. Weather: Few cumulus distant NNW-ESE, broken altocumulus, broken cirrus fibratus Temperature: 44F; Dew Point: 25F; Wind: ENE at 6 kts, Sea-level pressure: 30.12 ins. Hg, decreasing, then increasing but lower than 3 hours ago Visibility: 30 miles, haze in all directions 6-hr max temp: 46F 6-hr min temp: 37F BHO SA 1755 E140 BKN 250 BKN 30 199/44/25/0606/012/ FEW CU DSNT NNW-ESE HZ DSNT ALQDS/ 8/134 55007 10046 20037 WEATHER SUMMARY FOR THURSDAY, APRIL 3, 2014 TEMPERATURE (DEGREES F) MAX…..55    NORMAL…..51 MIN…..35    NORMAL…..33 MEAN….46    NORMAL…..42 DEPARTURE FROM 30-YEAR NORMAL…………………….+4 TOTAL DEPARTURE FOR THE MONTH…………………….+7 [+2.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY…………..19  DEPARTURE……….-4 TOTAL HEATING UNITS FOR THE MONTH…………..64  DEPARTURE……….-7 TOTAL HEATING UNITS FOR THE SEASON………..5691  DEPARTURE……..+136 TOTAL HEATING UNITS LAST SEASON TO DATE……5099  DIFFERENCE…….+592 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY………………23  NNW  AT  8:51 A.M. * AERO…………………..24  NW   AT  3:32 A.M. ASOS…………………..24  NW   AT  3:34 A.M. DAVIS………………….22  NW   AT  3:33 A.M. RMY 25 FASTEST MILE FOR YESTERDAY………………..18  NW   AT  3:40 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE……………..18  NW   AT  8:52 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE…………….17  NE   AT  3:38 A.M. AVERAGE WIND SPEED AND DIRECTION………… 10.5 NW ASOS………………….10.4 DAVIS………………… 9.7 NW [311 deg] * Last of several occurrences… PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE………….-0.17 ASOS…………..0.00 TOTAL PRECIPITATION FOR THE MONTH……….0.00  DEPARTURE………….-0.51 ASOS…………..0.00 TOTAL PRECIPITATION FOR THE YEAR……….15.12  DEPARTURE………….+0.61 ASOS………….15.55 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…………..-0.6 TOTAL SNOWFALL FOR THE SEASON…………..84.8  DEPARTURE………….+24.5 PRELIMINARY CLIMATE SUMMARY FOR MARCH 2014 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:  R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ….: Data not yet available, records not finalized 3/1  34/12/23/-8/0.00/0.0/458/68          28 SSW AERO 29 MPH SSW RMY 30 3/2  37/28/33/2/T/T/014/02                22 SW  AERO 22 MPH SW  RMY 29 3/3  28/11/20/-12/0.00/0.0/000/00         29 NNW AERO 30 MPH NNW RMY N/A 3/4  29/6/18/-14/0.00/0.0/444/65          17 SW  AERO 16 MPH SW  RMY 17 3/5  27/16/22/-10/0.02/0.3/000/00         21 NE  AERO 20 MPH N   RMY 23 3/6  26/7/17/-15/0.00/0.0/689/100         23 NNW AERO 23 MPH NNW RMY N/A 3/7  35/16/26/-7/0.00/0.0/449/65          18 SE  AERO 17 MPH SE  RMY 18 3/8  52/27/40/+7/0.00/0.0/673/97          26 NW  AERO 29 MPH NNW RMY 27 3/9  40/25/33/0/0.00/0.0/669/96           28 NW  AERO 29 MPH NW  RMY 29 3/10 42/26/34/+1/0.03/0.8/196/28          21 S   AERO 22 MPH S   RMY 27 3/11 56/34/45/+11/0.00/0.0/450/64         33 W   AERO 33 MPH W   RMY 34 3/12 53/34/44/+10/0.50/T/120/17           29 NNW AERO 30 MPH NNW RMY 30 3/13 33/12/23/-11/0.14/1.4/007/01         43 NW  AERO 45 MPH NW  RMY 45 3/14 37/10/24/-11/0.00/0.0/498/70         39 SSW AERO 41 MPH SSW RMY 42 3/15 54/35/45/+10/0.01/0.0/450/63         50 WNW AERO 58 MPH WNW RMY 54 3/16 35/21/28/-7/0.00/0.0/509/71          36 W   AERO 36 MPH WNW RMY 37 3/17 30/13/22/-14/0.00/0.0/562/78         25 N   AERO 26 MPH N   RMY 19 3/18 35/16/26/-10/0.00/0.0/701/97         18 ENE AERO 16 MPH ENE RMY 18 3/19 44/23/34/-2/T/0.0/428/59             24 E   AERO 23 MPH E   RMY 26 3/20 51/35/43/+6/0.30/0.0/190/26          36 W   AERO 37 MPH W   RMY 39 3/21 42/29/36/-1/0.00/0.0/242/33          40 W   AERO 41 MPH W   RMY 42 3/22 55/26/41/+4/T/0.0/404/55             52 WNW AERO 52 MPH WNW RMY 53 3/23 43/20/32/-6/0.00/0.0/052/07          32 NNW AERO 32 MPH NNW RMY N/A 3/24 32/13/23/-15/0.00/0.0/725/98         37 N   AERO 36 MPH N   RMY 36 3/25 38/17/28/-10/0.00/0.0/550/74         25 SSW AERO 22 MPH SSW RMY N/A 3/26 32/20/26/-13/T/0.1/022/03            54 NW  AERO 56 MPH NW  RMY 55 3/27 45/17/31/-8/0.00/0.0/659/88          35 NW  AERO 33 MPH NW  RMY 31 3/28 57/33/45/+6/0.06/0.0/038/05          45 SW  AERO 43 MPH SW  RMY 47 3/29 53/37/45/+5/0.86/0.0/196/26          39 ENE AERO 40 MPH ENE RMY 38 3/30 42/33/38/-2/2.41/T/000/00            40 NNE AERO 38 MPH NNE RMY 41 3/31 37/31/34/-7/0.70/0.4/000/00          33 N   AERO N/A        RMY 37 4/1  48/31/40/-1/0.00/0.0/…/..          29 NNE AERO N/A 4/2  56/34/45/+4/0.00/0.0/…/..          22 WSW AERO 20 MPH WSW RMY N/A 4/3  55/36/46/+4/0.00/0.0/…/..          23 NNW AERO 22 MPH NW  RMY 25 4/4 morning low temp: 35F; the normal low is now 33F DAILY RECORDS FOR MARCH/APRIL 2014 None DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR APRIL 4 HIGH 76 IN 2010 LOW 12 IN 1954 PRECIP 1.45 IN. IN 1987 SNOWFALL 3.7 IN. IN 1975 PEAK GUST 80 MPH WNW IN 1963 RECORDS FOR APRIL 5 HIGH 81 IN 1928 LOW 15 IN 1995 PRECIP 2.15 IN. IN 1987 SNOWFALL 4.0 IN. IN 1898 PEAK GUST 76 MPH WNW IN 1963 TODAY’S REPORT PREPARED BY: Brian Fitzgerald
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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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