Sign In Become a Member
Donate
Daily Discussions

Thursday, September 5, 2019

September 5, 2019

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, 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
THURSDAY, SEPTEMBER 5, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

EXCELLENT VISIBILITY WITH A LIGHT SEA BREEZE
KICKING IN LATER IN THE DAY….

We observed an almost perfect visibility of 85 miles
throughout the day. Wind was light, but shifted from
S-E around noon. The highest gust so far today is 23 mph
earlier this morning. Skies became gradually cloudier,
being completely overcast with cirrostratus clouds
shortly following the 1 P.M. observation. Conditions
were dry, with dew points only in the upper 40s.
The high so far today is 68F, which is 7 degrees
below the daily normal maximum of 75F. The low since
midnight is 54F, which is 4 degrees below the normal
minimum of 58F.

PRELIMINARY STATS FOR AUGUST 2019

TEMPERATURE, Deg. F
Avg. Max. 80.4 [+1.2] Avg. Min. 62.1 [+0.3] Mean      71.5 [+1.0] 24-hour corrected mean: 70.5
Max. for month: 92F on the 19th
Min. for month: 51F on the 26th

COOLING DEGREE DAYS
Total cooling units:   211 [+22] Total for the season:  619 [+82] Total for last season: 753

PRECIPITATION, Inches
Total: 1.83 [-2.21] Greatest in 24 hrs: N/A

WIND, mph
Avg. uncorrected wind speed: 9.1 mph
Avg. corrected wind speed:   9.8 mph
Prevailing wind direction: N/A
Peak gust and direction: N/A

SUNSHINE:
Campbell-Stokes card minutes: N/A
Astronomical total minutes:   N/A

Today’s Observations:

7 A.M.
Weather: Scattered cirrus
Temperature: 58F; Dew Point: 49F; Wind: S at 6 kts,
Wind: Light
Sea-level pressure: 30.09 ins. Hg, falling then rising
Visibility: 85 miles
6-hr Max temp: 62F
6-hr Min temp: 54F
24-hr Precip: 0.00 ins.
BHO SA 1155 250 SCT 85 190/58/49/3506/009/ WND LGT/
8/002 51013 10062 20054

10 A.M.
Weather: Broken cirrostratus, few cumulus
Temperature: 65F; Dew Point: 47F; Wind: NE at 6 kts,
Wind: Light
Sea-level pressure: 30.11 ins. Hg, falling then rising
Visibility: 85 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E250 BKN 85 197/65/47/0506/011/ FEW CU
ALQDS WND LGT/ 8/108 50007

1 P.M.
Weather: Broken cirrostratus, few cumulus
Temperature: 68F; Dew Point: 46F; Wind: E at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.10 ins. Hg, falling rapidly
Visibility: 85 miles
6-hr Max temp: 68F
6-hr Min temp: 58F
BHO SA 1755 E250 BKN 85 193/68/46/0904/010/ FEW
CU ALQDS WND L/V/ 8/108 58004 10068 20058

SUMMARY FOR WEDNESDAY, SEPTEMBER 4, 2019

TEMPERATURE (DEGREES F)
MAX…..83   NORMAL…..76
MIN…..61   NORMAL…..59
MEAN….72   NORMAL…..67

DEPARTURE FROM 30-YEAR NORMAL………………….+5
TOTAL DEPARTURE FOR THE MONTH………………….+2 [+0.3 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………7   DEPARTURE………+4
TOTAL COOLING UNITS FOR THE MONTH…………..12   DEPARTURE………-3
TOTAL COOLING UNITS FOR THE SEASON…………631   DEPARTURE……..+79
TOTAL COOLING UNITS LAST SEASON TO DATE…….791   DEPARTURE…….-160

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..30 SW  AT  2:10 P.M.
AERO…………………….28 SW  AT  2:08 P.M.
ASOS…………………….30 SSW AT  2:12 P.M.
DAVIS……………………30 SW  AT  1:37 P.M. RMY 30
FASTEST MILE FOR YESTERDAY………………….24 SW  AT  2:14 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….23 SSW AT  2:13 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………23 SSW AT  2:13 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..12.4 S
ASOS…………………..12.7
DAVIS………………….12.0 SSW [215 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……….0.37  DEPARTURE……-0.09
ASOS…………..0.36
TOTAL PRECIPITATION FOR THE YEAR……….37.52  DEPARTURE……+2.03
ASOS………….37.40

PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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

8/01  84/66/75/+3/0.00/755/87               18 NNW AERO 20 NW  RMY 17
8/02  83/61/72/0/0.00/804/93                18 WSW AERO 18 WSW RMY 18
8/03  84/66/75/+3/0.00/302/35               25 SW  AERO 26 SW  RMY 25
8/04  83/66/75/+3/0.00/732/85               21 NE  AERO 23 SW  RMY 25
8/05  81/58/70/-2/0.00/842/98               20 S   AERO 18 S   RMY 19
8/06  79/63/71/-1/0.00/282/33               15 S   AERO 14 S   RMY 17
8/07  82/66/74/+2/…./367/43               32 SSW AERO 35 SSW RMY 35
8/08  84/67/76/+4/…./588/69               30 SW  AERO 24 WNW RMY 29
8/09  82/63/73/+1/…./815/96               28 NW  AERO 25 NW  RMY 26
8/10  78/59/69/-2/…./720/85               32 NW  AERO 28 NW  RMY 28
8/11  78/55/67/-4/0.00/734/87               28 W   AERO 25 W   RMY 28
8/12  82/60/71/0/0.00/749/89                25 W   AERO 23 W   RMY 26
8/13  77/66/72/+1/0.02/059/07               25 W   AERO 24 WSW RMY 24
8/14  75/62/69/-2/…./452/54               24 ENE AERO 22 ENE RMY 22
8/15  77/59/68/-3/…./568/68               17 ESE AERO 15 SSE RMY 16
8/16  78/61/70/-1/…./732/88               20 E   AERO 17 ESE RMY 18
8/17  78/67/73/+2/…./099/12               14 SE  AERO 15 SE  RMY 15
8/18  88/70/79/+8/…./529/64               18 SSW AERO 18 SSW RMY 21
8/19  92/69/81/+11/…./…/..              25 WSW AERO 23 WSW RMY 25
8/20  87/66/77/+7/…./…/..               18 W   AERO 14 WSW RMY N/A
8/21  85/68/77/+7/0.12/…/..               33 SW  AERO 32 SW  RMY 33
8/22  88/68/78/+8/0.00/…/..               25 W   AERO 21 W   RMY 26
8/23  78/60/69/-1/0.04/…/..               23 N   AERO 18 N   RMY 24
8/24  72/55/64/-6/0.00/…/..               25 ENE AERO 21 ENE RMY 22
8/25  66/56/61/-8/0.00/…/..               31 ENE AERO 25 ENE RMY 29
8/26  71/51/61/-8/0.00/…/..               25 NE  AERO 21 NE  RMY 25
8/27  77/54/66/-3/0.00/…/..               18 SSW AERO 18 SSW RMY 17
8/28  78/59/69/0/…./…/..                21 SSE AERO 18 SSE RMY 20
8/29  83/63/73/+4/…./…/..               25 WNW AERO 21 WNW RMY 26
8/30  84/59/72/+4/…./…/..               30 SW  AERO 30 SW  RMY 28
8/31  79/61/70/+2/…./…/..               21 W   AERO 18 W   RMY 20

PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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

9/01  73/56/65/-3/0.00/…/..                21 ENE AERO 14 ENE RMY 18
9/02  75/57/66/-2/0.37/…/..                39 W   AERO 41 W   RMY 41
9/03  77/61/69/+2/0.00/…/..                18 S   AERO 16 S   RMY N/A
9/04  83/61/72/+5/0.00/…/..                30 SW  AERO 28 SW  RMY 30

9/05 Low temp since midnight is 54F; normal low is 58F

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

RECORDS FOR SEPTEMBER 5
HIGH 90F IN 1971
LOW 45F IN 1906
PRECIP 1.37 INCHES IN 1907
PEAK GUST 46 MPH NW IN 1994

RECORDS FOR SEPTEMBER 6
HIGH 92F IN 1900, 2018
LOW 39F IN 1888
PRECIP 3.19 INCHES IN 1890
PEAK GUST 78e MPH SE IN 1979 (TROPICAL STORM DAVID)

TODAY’S REPORT PREPARED BY: Benjamin Turner and Rusty Monro

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