Sign In Become a Member
Donate
Daily Discussions

Friday, August 18, 2023

August 18, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, AUGUST 18, 2023 ALL TIMES ARE…

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

FRIDAY, AUGUST 18, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0454E
SUNSET:  1841E

MORNING THUNDERSTORMS PROVIDE WIND, RAIN, AND BELOW AVERAGE
TEMPERATURES…

Morning storms moved into the area pretty early today. Before
the activity, we had obscured skies and foggy conditions on
the hill. The storm came through rather intensely, dumping over
an inch of rain in one hour! Once the storm moved through we had
a quick peek of the sun and cloud clearing only to have the
warming temperatures assist in forming more clouds.

The passing severe storms this morning produced a confirmed, brief
EF-0 tornado in Stoughton, a EF-1 tornado in Weymouth, and other
tornados near Attleboro, MA and across northern Rhode Island.

The high temperature once again remained well below average,
however, the overnight low was slightly above normal. Because of
the rain and humidity, our dew points hovered in the upper 60’s
today. With the wind suddenly slowing down after the rain moved
through it made for an overall sticky feel out there.

The wind remained on the light side early and then became rather
gusty when the thunderstorm came through. We had a gust of about
27 mph during that time, just before 10am. The average so far is
only about 8 mph.

As mentioned above, visibility was poor during the morning hours.
After the storms passed, we rebounded beautifully at 60 miles of
visibility at our 1pm observation.

The maximum temperature so far today has been 77F, which is
3 degrees below the normal high for today of 80F. The minimum
temperature since midnight is 65F, which is 2 degrees above the
normal low of 63F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 100ft
Temperature: 68F; Dew Point: 68F; Relative Humidity: 100%
Wind: SE @ 7 kts
Sea-level pressure: 1007.8 mb; 29.76 in. Hg: falling unsteadily
Visibility: 1/16 mile, foggy
6-hr Max temp: 68F
6-hr Min temp: 65F
24-hr Precip: 0.02
BHO SA 1155 X W1 1/16F 078/68/68/1307/976/ 8//// 57020 6002/
70002 10068 20065

10 A.M.
Weather: Light drizzle, overcast stratus, few lower stratus
fractus all quadrants, precipitation very light
Temperature: 69F; Dew Point: 69F; Relative Humidity: 100%
Wind: SW @ 11 kts
Sea-level pressure: 1005.8 mb; 29.70 in. Hg: falling, then rising
Visibility: 12 miles, thin fog all quadrants
3-hr Precip: 1.06 inches
BHO SA 1455 E6 OVC 12L- 058/69/69/2211/970/ FEW LWR STFRA ALQDS
THN F ALQDS TE10 RW-E33 L-B52 PCPN VRY LGT/ 8/6// 55020 6106/

1 P.M.
Weather: Broken stratocumulus
Temperature: 75F; Dew Point: 71F; Relative Humidity: 86%
Wind: SSW @ 7 kts
Sea-level pressure: 1014.9 mb; 29.76 in. Hg: falling, then steady
Visibility: 60 miles
6-hr Max temp: 77F
6-hr Min temp: 68F
6-hr Precip: 1.06 inches
BHO SA 1755 E9 BKN 60 049/75/71/2007/976/ 8/4// 56009 6106/
10077 20068

————————————————————–

SUMMARY FOR THURSDAY, AUGUST 17, 2023

TEMPERATURE (DEGREES F)
MAX…….70   NORMAL…..80
MIN…….62   NORMAL…..63
MEAN……66   NORMAL…..72

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……….-6
TOTAL DEPARTURE FOR THE MONTH…………………-29 [-1.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE SEASON……………0  DEPARTURE…….-11
TOTAL HEATING UNITS LAST SEASON TO DATE……….0  DEPARTURE………0

COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….1  DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE MONTH……………97  DEPARTURE…….-30
TOTAL COOLING UNITS FOR THE SEASON………….519  DEPARTURE……..+5
TOTAL COOLING UNITS LAST SEASON TO DATE……..700  DEPARTURE……-181

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated

F420C (Official)……….E15 E    @  11:19 A.M.
VECTOR #1 (1-Sec)……….14 E    @  11:19 A.M.
VECTOR #2 (1-Sec)……….13 ESE  @  08:58 P.M.
DAVIS #1……………….13 E    @  11:19 A.M.
DAVIS #2 ………………12 E    @  11:13 A.M.
RMY #1 (Instantaneous)…..14 E    @  11:12 A.M.
RMY #2 (Instantaneous)…..13 ESE  @  08:58 P.M.
MERLIN…………………14 SE
RICHARDS (C5C) (Inst)……13      @  11:19 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL……………….9 E   @  11:24 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE……………9     @  11:21 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE……………9     @  11:52 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………10 E   @  08:22 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE…………….9 E   @  11:52 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE………………9 E   @  11:21 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE………………9 E   @  11:52 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………10     @  11:21 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..4.6 ENE [110 total miles] VECTOR #1………………4.9
VECTOR #2………………5.2
DAVIS #1……………….4.8 E
DAVIS #2……………….4.8 ESE
RMY #1…………………5.0 E
RMY #2…………………5.2 E
RICHARDS (C5C)………….5.7

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.10
TOTAL PRECIPITATION FOR THE MONTH…………..1.49 DEPARTURE…..-0.72
TOTAL PRECIPITATION FOR THE YEAR…………..36.26 DEPARTURE…..+3.35

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY:  R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

8/1   76/58/67/-6/0.00/763/88             24 NW  VEC1 24 NW  RMY 24
8/2   75/54/65/-8/0.00/830/96             23 SSW VEC1 22 SSW RMY 23
8/3   79/59/69/-4/0.00/725/84             32 SSW VEC1 34 SSW RMY 34
8/4   77/62/70/-3/T/172/20                29 SSW VEC1 29 SSW RMY 29
8/5   83/66/75/+2/0.00/523/61             18 NW  VEC1 16 WNW RMY 17
8/6   82/60/71/-2/0.00/839/98             20 W   VEC1 19 W   RMY 19
8/7   72/65/69/-4/0.14/034/04             29 SSE VEC1 30 SSE RMY 29
8/8   82/68/75/+3/0.47/187/22             39 S   VEC1 42 S   RMY 42
8/9   82/66/74/+2/0.00/756/89             39 WNW VEC1 38 WNW RMY 38
8/10  83/64/74/+2/0.02/254/30             28 SSW VEC1 27 SSW RMY 28
8/11  80/63/72/+0/0.07/810/96             36 W   VEC1 36 W   RMY 38
8/12  84/61/73/+1/0.00/733/87             26 SSW VEC1 26 SSW RMY 26
8/13  84/68/76/+4/0.07/629/75             26 SSW VEC1 26 SSW RMY 27 TSTM
8/14  82/63/73/+1/T/536/64                25 W   VEC1 24 W   RMY 29
8/15  70/64/67/-5/0.70/000/00             28 NE  VEC1 27 NE  RMY 28
8/16  68/64/66/-6/T/000/00                18 ESE VEC1 19 ENE RMY 18
8/17  70/62/66/-6/T/…/..                15 E   VEC1 14 E   RMY 14

8/18 The low since midnight is 65F, the daily normal low is 63F

————————————————————–

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

RECORDS FOR AUGUST 18
HIGH 93F IN 2002
LOW 49F IN 1918, 1941
PRECIP 4.64 INCHES IN 1955 [DIANE] PEAK GUST 46 MPH WNW IN 2007

RECORDS FOR AUGUST 19
HIGH 92F IN 2019
LOW 48F IN 1958
PRECIP 8.07 INCHES IN 1955 [DIANE – RECORD FOR MONTH] PEAK GUST 78 MPH ENE IN 1991 – HURRICANE BOB

TODAY’S REPORT PREPARED BY: Amanda Joly

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