Sign In Become a Member
Donate
Daily Discussions

Friday, September 29, 2017

October 2, 2017

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

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
FRIDAY, SEPTEMBER 29, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

AUTUMN TEMPERATURES RETURN TO GREAT BLUE HILL

After record breaking high temperatures earlier this week
we have returned to more seasonable conditions. Winds coming
from the north west brought cooler air to Great Blue Hill
today. Temperatures reached 64F by 1:00 PM EST the normal
being 67F. With low dew points and relative humidity
visibility around the Observatory was an excellent 80 miles
all day. Skies remained clear with a few distant cumulus and
a few cirrus clouds during each observation making for a
pleasant autumn day.

Today’s Observations:

7 A.M.
Weather: Clear, few cumulus NNE-ESE, few cirrus WSW
Temperature: 71F; Dew Point: 69F; Wind: NW at 6 kts,
Wind: Light
Sea-level pressure: 30.01 ins. Hg, rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 48F
6-hr Min temp: 41F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 80 164/48/41/3206/001/ FEW DSNT CU NNE-ESE
FEW CI WSW WND LGT/ 8/101 51018 10051 20046

10 A.M.
Weather: Clear, few distant cumulus WSW-SSE,
few cirrus ENE-SSW
Temperature: 58F; Dew Point: 38F; Wind: WNW at 4 kts,
Wind: Light
Sea-level pressure: 30.02 ins. Hg, rising then falling
Visibility: 80 miles
BHO SA 1455 CLR 80 166/58/38/E3004/002/ FEW DSNT CU WSW-SSE
FEW CI ENE-SSW WND LGT/ 8/101 50002

1 P.M.
Weather: Clear, few distant cumulus in all directions,
few cirrus ENE and ESE-SSW
Temperature: 62F; Dew Point: 38F; Wind: NW at 6 kts,
Wind: Light
Sea-level pressure: 29.99 ins. Hg, falling steadily
Visibility: 80 miles
6-hr Max temp: 64F
6-hr Min temp: 49F
BHO SA 1755 CLR 80 158/62/38/3106/999/ FEW DSNT CU ALQDS FEW CI
ENE AND ESE-SSW WND LGT/ 8/101 58008 10064 20049

SUMMARY FOR THURSDAY, SEPTEMBER 28, 2017

TEMPERATURE (DEGREES F)
MAX…..75   NORMAL…..67
MIN…..52   NORMAL…..50
MEAN….64   NORMAL…..58

DEPARTURE FROM 30-YEAR NORMAL…………………….+6
TOTAL DEPARTURE FOR THE MONTH……………………+94 [+3.2 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH………….100   DEPARTURE………+41
TOTAL COOLING UNITS FOR THE SEASON…………707   DEPARTURE……..+111
TOTAL COOLING UNITS LAST SEASON TO DATE…….894   DEPARTURE……..-187

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………1   DEPARTURE……….-6
TOTAL HEATING UNITS FOR THE MONTH…………..43   DEPARTURE………-58
TOTAL HEATING UNITS FOR THE SEASON………….69   DEPARTURE………-57
TOTAL HEATING UNITS LAST SEASON TO DATE……..55   DEPARTURE………+22

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….29 NNW AT  7:13 P.M.
AERO……………………30 NNW AT  3:27 P.M.
ASOS……………………32 NW  AT  3:29 P.M.
DAVIS…………………..19 NW  AT  3:28 P.M. RMY 33
FASTEST MILE FOR YESTERDAY…………………20 NNW AT  7:13 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………21 NNW AT  7:15 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 NNW AT  7:15 P.M.
AVERAGE WIND SPEED AND DIRECTION………….12.8 NNW
ASOS………………….12.2
DAVIS…………………11.1 NNW [323 DEG.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.17  DEPARTURE……-0.59
ASOS…………..3.24
TOTAL PRECIPITATION FOR THE YEAR……….39.53  DEPARTURE……+0.75
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings

 

PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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

9/1  68/47/58/-10/0.00/749/95              26 WNW AERO 28 WNW RMY 31
9/2  72/46/59/-9/0.00/542/69               18 NNW AERO 18 NNW RMY 21
9/3  63/52/58/-9/0.24/000/00               33 W   AERO 33 W   RMY 37
9/4  79/55/67/0/0.00/702/90                29 SSW AERO 28 SSW RMY N/A
9/5  84/62/73/+6/0.00/583/75               36 S   AERO 32 S   RMY 38
9/6  76/59/68/+1/0.49/070/09               28 S   AERO 28 S   RMY 30 TSTM
9/7  74/58/66/0/0.79/417/54                24*WSW AERO 23 WSW RMY 24
9/8  74/53/64/-2/0.00/577/75               21 WSW AERO 18 WSW RMY 22
9/9  68/51/60/-5/T/620/81                  18 ENE AERO 16 ENE RMY 18
9/10 71/51/61/-4/0.00/694/91               18 NW  AERO 16 NW  RMY N/A
9/11 78/50/64/-1/0.00/692/91               20 NNW AERO 17 NNW RMY 20
9/12 84/58/71/+6/0.00/690/91               22 WSW AERO 18 WSW RMY 23
9/13 84/59/72/+8/T/680/90                  18 WSW AERO 15 WSW RMY 20 TSTM
9/14 82/66/74/+10/0.00/233/31              23 SW  AERO 23 WSW RMY 25 TSTM
9/15 83/66/75/+11/0.05/300/40              18 WNW AERO 15 WNW RMY 18
9/16 78/65/72/+9/T/261/35                  14 E   AERO  9 E   RMY 12
9/17 79/61/70/+7/T/334/45                  15 SSE AERO 14 SSE RMY 15
9/18 67/62/65/+3/0.02/000/00               21 NE  AERO 18 NE  RMY N/A
9/19 63/61/62/0/0.13/000/00                28 NE* AERO 25 NNE RMY N/A
9/20 68/62/65/+3/0.67/000/00               41 NNE AERO 44 NNE RMY 45
9/21 69/60/65/+4/0.00/242/33               47 NNE AERO 44 NNE RMY 50
9/22 60/54/57/-4/0.57/…/..               40 NNE AERO 38 NNE RMY N/A
9/23 74/59/67/+7/0.21/…/..               29 NNE AERO 29 NNE RMY N/A
9/24 85/63/74/+14/0.00/…/..              16 N   AERO 14 N*  RMY N/A
9/25 86/66/76/+16/0.00/…/..              15 ESE*AERO 13 ESE RMY 14
9/26 84/66/75/+16/0.00/…/..              15 SW  AERO 12 SW* RMY 14
9/27 86/64/75/+16/0.00/…/..              21 S   AERO 20 S   RMY 22
9/28 75/52/64/+6/0.00/…/..               29 NNW AERO 30 NNW RMY 33

9/28 Low temp since midnight is 46F; normal low is now 50F

DAILY RECORDS FOR SEPTEMBER

9/1/17: DAILY RECORD LOW MINIMUM TEMPERATURE OF 47F,
TIES PREVIOUS RECORD SET IN 1975

9/27/17: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 86F
BREAKS PREVIOUS RECORD SET IN 1998 AND TIED IN 2014

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

RECORDS FOR SEPTEMBER 29
HIGH 85F IN 1952
LOW 28F IN 1914 (SEPTEMBER MINIMUM RECORD)
PRECIP 2.61 INCHES IN 1907
PEAK GUST 62 MPH S IN 2005

RECORDS FOR SEPTEMBER 30
HIGH 84F IN 1986
LOW 31F IN 1992
PRECIP 2.44 INCHES IN 2015
PEAK GUST 58 MPH SSE IN 1999

TODAY’S REPORT PREPARED BY: Kaitlin Geagan

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