Sign In Become a Member
Donate
Daily Discussions

Tuesday, May 19, 2015

May 19, 2015

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

Agreement required — click “Accept & Continue” below to review and accept the Data Use & Privacy Policy

Access to this content requires acceptance of our Data Use & Privacy Policy.

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, MAY 19, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

MUCH NEEDED RAIN ENTERS THE REGION, 0.36 INCHES BY
1:00 PM EST THIS AFTERNOON

A northeasterly flow yesterday was responsible for our
first cooler than normal day since May 2nd. A maximum
of 62F was reached just after the 1:00 PM EST observation,
with temperatures cooling to 50F overnight.

Humidity was on the rise throughout the overnight hours, with
fog and light showers beginning to pass through the region
by this morning’s 7:00 AM EST observation. 0.01 inches of
new rain was recorded by the first observation of the day,
followed by another 0.02 inches by the 10:00 AM EST observation,
with 0.36 inches total by the 1:00 PM EST observation.

Showers were beginning to leave the area following a couple
hours of moderate to occasionally heavy rainfall. A maximum
of just 59F had been reached.
Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 53F; Dew Point: 52F; Wind: SSW at 9 kts
Sea-level pressure: 29.98 ins. Hg, falling, then more quickly
Visibility: 3/4 miles, fog
6-hr Max temp: 53F
6-hr Min temp: 50F
24-hr precip: 0.01 inches
BHO SA 1155 W3 X 3/4F 153/53/52/2109/998/
8//// 58010 ASOS 60001 70001 MANUAL 70001 10053 20050

10 A.M.
Weather: Light rain, fog
Temperature: 57F; Dew Point: 56F; Wind: SSW at 13 kts
Sea-level pressure: 29.95 ins. Hg, falling, then more slowly
Visibility: 5/16 of a mile, except 1/2 of a mile ESE-SSW,
obscured by light rain and fog
3-hr precip: 0.02 inches
BHO SA 1455 W3 X 5/16R-F 141/57/56/2013/995/
VSBY ESE-SSW 1/2 MI/ 8//// 56012 ASOS 60002 MANUAL 60002

1 P.M.
Weather: Light rain, fog
Temperature: 59F; Dew Point: 58F; Wind: S at 13 kts
Sea-level pressure: 29.89 ins. Hg, falling then falling more quickly
Visibility: 1/2 of a mile, light rain and fog
6-Hr Max temp: 59F
6-Hr Min temp: 52F
6-Hr Precip: 0.35 inches
BHO SA 1755 W4 X 1/2R-F 122/59/58/1913/989/ PRCP VRY LGT/
8//// 58019 ASOS 60036 MANUAL 60035 10059 20052
SUMMARY FOR MONDAY, MAY 18, 2015

TEMPERATURE (DEGREES F)
MAX…..62   NORMAL…..67
MIN…..48   NORMAL…..48
MEAN….55   NORMAL…..58

DEPARTURE FROM 30-YEAR NORMAL……………………-3
TOTAL DEPARTURE FOR THE MONTH………………….+105 [+5.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..10  DEPARTURE………..+2
TOTAL HEATING UNITS FOR THE MONTH…………..86  DEPARTURE……….-99
TOTAL HEATING UNITS FOR THE SEASON………..6357  DEPARTURE………+137
TOTAL HEATING UNITS LAST SEASON TO DATE……6289  DIFFERENCE………+68

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0   DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH………….16   DEPARTURE……….+9
TOTAL COOLING UNITS FOR THE SEASON…………16   DEPARTURE……….+7
TOTAL COOLING UNITS LAST SEASON TO DATE…….13   DIFFERENCE………+3

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………25 NE  AT   1:53 A.M.*
ASOS…………………..27 NE  AT   1:42 A.M.
DAVIS………………….24 NE  AT  12:34 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..17 NE  AT   1:37 A.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..18 NE  AT   1:35 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….17 NE  AT   1:35 A.M.
AVERAGE WIND SPEED AND DIRECTION………….10.0 NE
ASOS………………….10.2
DAVIS…………………9.0 ENE [069 deg.] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.01  DEPARTURE…..-0.12
ASOS……………0.01
TOTAL PRECIPITATION FOR THE MONTH………..0.28  DEPARTURE…..-1.93
ASOS……………0.27
TOTAL PRECIPITATION FOR THE YEAR………..18.20  DEPARTURE…..-2.43
ASOS…………….N/A ***
*** ASOS annual totals not available due to erroneous readings

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………..0.0  DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH……………..0.0  DEPARTURE……0.0
TOTAL SNOWFALL FOR THE SEASON…………..150.8  DEPARTURE….+88.1

PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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

5/1  52/37/45/-8/0.00/0.0/354/42               21 NE  RMY 20
5/2  63/35/49/-4/0.00/0.0/668/79               20 S   RMY 20
5/3  74/44/59/+6/0.00/0.0/509/60               22 S   RMY 22
5/4  83/47/65/+11/0.00/0.0/783/92              39 SSW RMY 45
5/5  77/56/67/+13/0.03/0.0/222/26              29 SW  RMY N/A
5/6  74/54/64/+10/0.00/0.0/574/67              24 SSW RMY 25
5/7  84/52/68/+13/0.00/0.0/824/96              29 S   RMY 32
5/8  74/44/59/+4/0.00/0.0/809/94               27 NNE RMY 26
5/9  77/44/61/+6/0.00/0.0/509/59               30 S   RMY 32
5/10 88/60/74/+19/0.00/0.0/692/80              28 SSW RMY 30
5/11 84/48/66/+10/0.00/0.0/529/61              30 NE  RMY 31
5/12 84/47/66/+10/0.24/0.0/287/33              33 WNW RMY 37
5/13 67/47/57/+1/0.00/0.0/820/94               31 WNW RMY N/A
5/14 70/44/57/+0/0.00/0.0/…/..               22 NW  RMY 22
5/15 73/51/62/+5/0.00/0.0/…/..               20 WSW RMY 21
5/16 68/53/61/+4/T/0.0/…/..                  23 S   RMY 24
5/17 79/50/65/+8/T/0.0/…/..                  21 NE  RMY N/A
5/18 62/48/55/-3/…./0.0/…/..               25 NE  RMY N/A

5/19 low since midnight is 50F; normal low is now 49F

DAILY RECORDS FOR MAY 2015

NONE SO FAR.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR MAY 19
HIGH 91F IN 1962
LOW 34F IN 2002
PRECIP 1.54 INCHES IN 1900
PEAK GUST 58 MPH NW IN 1964

RECORDS FOR MAY 19
HIGH 91F IN 1962
LOW 34F IN 2002
PRECIP 1.54 INCHES IN 1900
PEAK GUST 58 MPH NW IN 1964

TODAY’S REPORT PREPARED BY: Brian Fitzgerald

Please follow and like us:
error
fb-share-icon
Tweet
fb-share-icon
←
→
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
↓ Scroll to read the full Policy — the agreement checkbox will unlock at the bottom