Sign In Become a Member
Donate
Daily Discussions

Thursday, May 11, 2017

May 11, 2017

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, 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
THURSDAY, MAY 11, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

TEMPERATURES RISE SLIGHTLY, SKIES TURN
PARTLY CLOUDY FOR SOME AFTERNOON SUNSHINE

Morning skies turned mostly cloudy shortly after the
7:00AM EST observation but had returned to partly cloudy
with scattered cumulus and cirrus in time for the 1:00PM
ob.  The extra sunshine helped temperatures reach 57F by
then, which is the warmest temperature recorded since
Sunday afternoon.  Winds remain on the lower side with
gusts up to 18-20 MPH.  Visibility also remained excellent
at 70 miles.

Today’s Observations:

7 A.M.
Weather: Scattered cumulus, scattered altocumulus
Temperature: 49F; Dew Point: 39F; Wind: NNE at 6G15 kts
Sea-level pressure: 30.01 ins. Hg, rising then steady
Visibility: 70 miles
6-hr Max temp: 49F
6-hr Min temp: 45F
24-hr precip: 0.00 in.
BHO SA 1155 44 SCT 74 SCT 70 163/49/39/0306G15/001/ 8/130 51009
10049 20045

10 A.M.
Weather: Two layers of broken stratocumulus
Temperature: 51F; Dew Point: 39F; Wind: NE at 8 kts
Sea-level pressure: 30.02 ins. Hg, steady then falling
Visibility: 70 miles
BHO SA 1455 E22 BKN 27 BKN 70 165/51/39/0408/002/ 8/500 51002

1 P.M.
Weather: Scattered cumulus, scattered cirrus
Temperature: 56F; Dew Point: 37F; Wind: NE at 9G15 kts
Sea-level pressure: 30.00 ins. Hg, falling, then more quickly
Visibility: 70 miles
6-hr Max temp: 57F
6-hr Min temp: 49F
BHO SA 1755 49 SCT 240 SCT 70 159/56/37/0509G15/000/ 8/101 58006
10057 20049

SUMMARY FOR WEDNESDAY, MAY 10, 2017

TEMPERATURE (DEGREES F)
MAX…..57   NORMAL…..65
MIN…..42   NORMAL…..46
MEAN….50   NORMAL…..55

DEPARTURE FROM 30-YEAR NORMAL…………………….-5
TOTAL DEPARTURE FOR THE MONTH……………………-32 [-3.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..15   DEPARTURE……….+5
TOTAL HEATING UNITS FOR THE MONTH………….141   DEPARTURE………+28
TOTAL HEATING UNITS FOR THE SEASON………..5474   DEPARTURE……..-674
TOTAL HEATING UNITS LAST SEASON TO DATE……5158   DIFFERENCE…….+316

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….17 NNE AT 10:51 P.M.
AERO……………………16 NW  AT  7:15 A.M.
ASOS……………………17 NE  AT 10:45 P.M.
DAVIS…………………..14 NW  AT  7:14 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………10 NNE AT 10:45 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………12 NNE AT 10:51 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..10 WNW AT  6:49 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..5.9 WNW
ASOS…………………..6.2
DAVIS………………….4.7 NW [310 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.12
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.22  DEPARTURE…….0.00
ASOS…………..1.27
TOTAL PRECIPITATION FOR THE YEAR……….22.03  DEPARTURE……+2.26
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings

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

5/1  50/43/47/-6/T/…/..                  21 N   AERO 18 N   RMY 22
5/2  65/42/54/+1/0.26/…/..               41 W   AERO 44 W   RMY 43
5/3  52/42/53/0/0.00/…/..                37 WNW*AERO 39 WNW RMY 40
5/4  65/40/53/-1/0.00/…/..               23 S   AERO 23 S   RMY 24
5/5  51/44/48/-6/0.73/…/..               28 E   AERO 28 E   RMY N/A
5/6  65/50/58/+4/0.23/…/..               46 SSE AERO 48 SSE RMY 49
5/7  63/47/55/0/T/…/..                   35 S   AERO 38 S   RMY 39
5/8  54/38/46/-9/T/…/..                  29 WSW AERO 29 WSW RMY 32
5/9  53/36/45/-10/T/…/..                 20 ESE AERO 17 ESE RMY 19
5/10 57/42/50/-5/0.00/…/..               17 NNE AERO 16 MW  RMY N/A

5/11 Low temp since midnight is 45F; normal low is now 46F

DAILY RECORDS FOR MAY

None so far.

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

RECORDS FOR MAY 11
HIGH 90F IN 1993
LOW 28F IN 1900
PRE 1.28 INS IN 1957
SNOW 1.0 INS IN 1907 (LATEST MEASURABLE SNOW ON RECORD)
PEAK GUST 75e MPH NW IN 1945

RECORDS FOR MAY 12
HIGH 88F IN 2001
LOW 29F IN 1907
PRECIP 1.49 INCHES IN 1968
PEAK GUST 76 MPH S IN 1974

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Nicholas Rousseau

facebookShare on Facebook
TwitterPost on X
FollowFollow us
PinterestSave
←
→
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
Main Menu