Sign In Become a Member
Donate
Daily Discussions

Sunday, April 23, 2023

April 23, 2023

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, APRIL 23, 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

SUNDAY, APRIL 23, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0451E
SUNSET:  1835E

OVERCAST SKIES WITH PERIODS OF LIGHT RAIN…

The day started off with light rain and overcast skies.
Although the temperatures are about average, the rain
and windy conditions in the AM made for a chilly, raw
feel. There were brief periods of moderate rain throughout
the day, with a total of 0.30 inches of rain through
the last observation.

The temperatures have remained steady throughout the day,
starting in the mid 40s and so far only peaking to 51F.
The humidity has been 100% throughout the morning and
afternoon.

The wind has been on the light side, though the early
morning hours were a bit gusty, with a gust around 28mph.
The average speed for the day so far is around 11mph.

Visibility has been low at best, with a maximum visibility
reported of 10 miles in the morning and fog moving in the
area during the afternoon hours.

The high temperature so far today is 51F degrees, which is
1 degree above average. The low since midnight is 45F
degrees, which is 4 degrees above the normal low of 41F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken stratus-fractus, overcast nimbostratus, light rain showers
Temperature: 47F; Dew Point: 47F; Relative Humidity: 100%
Wind: ESE @ 14G21 kts
Sea-level pressure: 1015.0 mb; 29.97 in. Hg: falling, then more rapidly
Visibility: 10 miles, 20 S, 6 SW-WSW
6-hr Max temp: 47F
6-hr Min temp: 45F
24-hr Precip:  0.30 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E8 BKN 30 OVC 10RW- 150/47/47/1214G21/997/
THN F ALQDS VSBY 20 S 6 SW-WSW/ 8/72/ 58008 70030 10047 20045

10 A.M.
Weather: Broken stratus-fractus, overcast nimbostratus, light rain showers
Temperature: 48F; Dew Point: 48F; Relative Humidity: 100%
Wind: ESE @ 7 kts
Sea-level pressure: 1015.5 mb; 29.99 in. Hg: rising unsteadily
Visibility: 5 miles, fog, 10 E-S
3-hr Precip:  0.08 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E9 BKN 17 OVC 5RW-F 155/48/48/1107/999/ VSBY 10 E-S/
8/7// 52005 6008/

1 P.M.
Weather: Overcast stratus-fractus
Temperature: 50F; Dew Point: 50F; Relative Humidity: 100%
Wind: ESE @ 8 kts
Sea-level pressure: 1014.0 mb; 29.94 in. Hg: falling, then more slowly
Visibility: 7 miles, this fog all quadrants, 3 NW-N
6-hr Max temp: 51F
6-hr Min temp: 47F
6-hr Precip:  0.30 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E4 OVC 7RW- 140/50/50/1308/994/ THN F ALQDS VSBY 3 NW-N/
8/7// 56015 6030/ 10051 20047

————————————————————–

SUMMARY FOR SATURDAY, APRIL 22, 2023

TEMPERATURE (DEGREES F)
MAX…….53   NORMAL…..59
MIN…….42   NORMAL…..41
MEAN……48   NORMAL…..50

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………-2
TOTAL DEPARTURE FOR THE MONTH……………….+114 [+5.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………17  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH…………..324  DEPARTURE……-108
TOTAL HEATING UNITS FOR THE SEASON…………4856  DEPARTURE……-923
TOTAL HEATING UNITS LAST SEASON TO DATE…….5223  DEPARTURE……-367

COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….9  DEPARTURE……..+8
TOTAL COOLING UNITS FOR THE SEASON……………9  DEPARTURE……..+8
TOTAL COOLING UNITS LAST SEASON TO DATE……….0  DEPARTURE……..+9

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

F420C (Official)………..28 ESE @ 10:23 P.M.
VECTOR #1 (1-Sec)……….31 ESE @ 10:22 P.M.
VECTOR #2 (1-Sec)……….31 ESE @ 11:44 P.M.
DAVIS #1……………….29 ESE @ 11:47 P.M.
DAVIS #2 ………………29 ESE @ 11:44 P.M.
RMY #1 (Instantaneous)…..30 ESE @ 10:23 P.M.
RMY #2 (Instantaneous)…..31 ESE @ 11:44 P.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……29     @ 10:23 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 ESE @ 11:41 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22     @ 11:47 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21     @ 11:46 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 ESE @ 11:47 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 ESE @ 11:46 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 ESE @ 11:47 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 ESE @ 11:46 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21     @ 11:47 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………10.0 ESE [240 total miles] VECTOR #1……………….9.8
VECTOR #2……………….10.0
DAVIS #1………………..10.5 ESE
DAVIS #2………………..10.2 ESE
RMY #1………………….10.0 ESE
RMY #2………………….9.9  ESE
RICHARDS (C5C)…………..10.6

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.30 DEPARTURE…..+0.15
TOTAL PRECIPITATION FOR THE MONTH…………..0.84 DEPARTURE…..-2.77
TOTAL PRECIPITATION FOR THE YEAR…………..15.45 DEPARTURE…..-2.18

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……-2.7
TOTAL SNOWFALL FOR THE SEASON (2022-2023)……34.9 DEPARTURE…..-34.7

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR APRIL CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

4/1   60/39/50/+9/0.39/0.0/145/19         36 SW   VEC1 40 SW  RMY 41
4/2   50/30/40/-1/0.00/0.0/636/83         40 NNW  VEC1 44 NNW RMY 45
4/3   51/28/40/-2/0.00/0.0/737/96         41 SSW  VEC1 46 SSW RMY 46
4/4   62/40/51/+9/0.00/0.0/594/77         26 ENE  VEC1 26 ENE RMY 27
4/5   45/37/41/-2/0.02/0.0/000/00         33 ENE  VEC1 34 ENE RMY 37
4/6   62/37/50/+7/0.02/0.0/155/20         26 NW   VEC1 28 NNW RMY 29
4/7   58/36/47/+3/0.00/0.0/328/42         45 WNW  VEC1 48 WNW RMY 52
4/8   50/29/40/-4/0.00/0.0/767/98         26 NNW  VEC1 29 NNW RMY 31
4/9   54/33/44/0/0.00/0.0/770/98          25 S    VEC1 28 S   RMY 28
4/10  65/33/49/+4/0.00/0.0/772/98         18 WSW  VEC1 19 NW  RMY 20
4/11  75/45/60/+15/0.00/0.0/522/66        37 W    VEC1 37 W   RMY 38
4/12  73/56/65/+19/0.00/0.0/515/65        46 NW   VEC1 49 NW  RMY 52
4/13  88/52/70/+24/0.00/0.0/764/96        25 W    VEC1 26 WNW RMY 27
4/14  88/50/69/+22/0.00/0.0/711/89        24 WNW  VEC1 27 WNW RMY 26
4/15  68/45/57/+10/T/0.0/401/50           20 ENE  VEC1 20 ENE RMY 21
4/16  55/46/51/+4/0.05/0.0/000/00         21 NE   VEC1 22 NE  RMY 21
4/17  55/45/50/+2/0.06/0.0/000/00         17 NE   VEC1 18 ENE RMY 18
4/18  57/45/51/+3/T/0.0/…/..            39 WSW  VEC1 41 WSW RMY 42
4/19  49/37/43/-6/0.00/0.0/…/..         35 WNW  VEC1 36 WNW RMY 40
4/20  64/36/50/+1/0.00/0.0/…/..         23 NW   VEC1 23 NNW RMY 23
4/21  55/42/49/-1/0.00/0.0/…./..        22 E    VEC1 24 SE  RMY 24
4/22 53/42/48/-2/…./0.0/…./.. 28 ESE  VEC1 31 ESE RMY 30

4/23  The low since midnight is 45F, the daily normal low is 41F

DAILY RECORDS

04/12/2023: NEW RECORD HIGH MINIMUM TEMPERATURE OF 56F,
THIS BEATS THE OLD RECORD OF 52F SET IN 1945 AND 1947

04/13/2023: NEW RECORD HIGH MAXIMUM TEMPERATURE OF 88F,
THIS BEATS THE OLD RECORD OF 85F SET IN 1945

04/14/2023: NEW RECORD HIGH MAXIMUM TEMPERATURE OF 88F,
THIS BEATS THE OLD RECORD OF 80F SET IN 1945

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

RECORDS FOR APRIL 23
HIGH 85 IN 1908, 2007
LOW 25 IN 1933,1989
PRECIP 1.99 IN. IN 2012
SNOWFALL 0.5 IN. IN 1911, 1956
PEAK GUST 64 MPH WNW IN 1962

RECORDS FOR APRIL 24
HIGH 82 IN 2001
LOW 22 IN 1930
PRECIP 2.51 INS IN 1898
SNOWFALL 1.2 INS IN 1967
PEAK GUST 59 MPH NW IN 1962

TODAY’S REPORT PREPARED BY: Amanda Joly

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