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Friday, September 3, 2021

September 5, 2021

BLUE HILL METEOROLOGICAL OBSERVATORYMILTON, MASSACHUSETTSELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, SEPTEMBER 3, 2021ALL TIMES ARE IN EASTERN STANDARD…

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

FRIDAY, SEPTEMBER 3, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0510E
SUNSET:  1815E
 
EXCELLENT VISIBILITY WITH PARTLY CLOUDY SKIES ATOP
GREAT BLUE HILL….

Today featured some pristine weather. Fall seems to be arriving
right on time, which is fortunate.

Skies were partly cloudy, and the humidity issues of late August are
but a distant memory.  

Visibility was an excellent 80 miles all day, that’s a little better
than typical for a mid-fall day.

Wind is north westerly at an average of 10 mph with a max gust so far of
23 mph.  

The high so far today is 71F, this is 6 degrees below the daily
normal maximum of 77F. The low so far today is 52F, which is 8
degrees below the daily normal minimum of 60F.

PRELIMINARY STATS FOR AUGUST 2021

TEMPERATURE, Deg. F
Avg. Max. 81.6 [+1.4]
Avg. Min. 65.4 [+2.8]
Mean      73.5 [+2.1]
24-hour corrected mean: 72.6
Max. for month: 92F on the 13th
Min. for month: 58F on the 1st

HEATING DEGREE DAYS
Total heating units:      0 [-11]
Total for the season:    28 [+25]
Total for last season:    3

COOLING DEGREE DAYS
Total cooling units:     271 [+62]
Total for the season:    650 [+54]
Total for last season:   757

PRECIPITATION, Inches
Total: 5.37 [+1.46]
Greatest in 24 hrs: N/A

WIND, mph
Avg. uncorrected wind speed:  8.8 mph
Avg. corrected wind speed:    9.5 mph
Prevailing wind direction:   SSW [14%]
Peak gust and direction:     47 ESE on the 22nd

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

Today’s Observations:

7 A.M.
Weather: Clear, few altocumulus
Temperature: 55F; Dew Point: 52F; Relative Humidity: 89%
Wind: NW @ 10G16 kts
Sea-level pressure: 1015.2 mb; 29.98 in. Hg; falling then rising
Visibility: 80 miles
6-hr Max temp: 55F
6-hr Min temp: 52F
24-hr Precip: Trace
BHO SA 1155 CLR 80 152/55/52/3110G16/998/ FEW AC/AS ALQDS/ 8/070
70000 53008 10055 20052

10 A.M.
Weather: Scattered altocumulus, few cumulus
Temperature: 65F; Dew Point: 53F; Relative Humidity: 65%
Wind: NNW @ 10G15
Sea-level pressure: 1015.3 mb; 29.98 in Hg; rising, then steady
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 70 SCT 80 153/65/53/3410G15/998/ FEW CU ALQDS/ 8/150
51001

1 P.M.
Weather: Scattered cumulus
Temperature: 67F, Dew point: 53F; Relative Humidity: 60%
Wind: NW @ 8G15 kts
Sea-level pressure: 1014.4 mb; 29.95 in Hg; falling steadily
Visibility: 80 miles
6-hr Max temp: 71F
6-hr Min temp: 55F
6-hr Precip: 0.00 ins.
BHO SA 1755 50 SCT 80 144/67/53/3208G15/995/ 8/100 57009 10071
20055

SUMMARY FOR THURSDAY, SEPTEMBER 2, 2021

TEMPERATURE (DEGREES F)
MAX…….71     NORMAL…..77
MIN…….55     NORMAL…..60
MEAN……63     NORMAL…..69

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………-6
TOTAL DEPARTURE FOR THE MONTH……………………-13 [-6.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………….2  DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH…………….5  DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE SEASON…………..33  DEPARTURE…….+13
TOTAL HEATING UNITS LAST SEASON TO DATE……….4  DEPARTURE…….+29

COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE MONTH…………….0  DEPARTURE……..-9
TOTAL COOLING UNITS FOR THE SEASON………….650  DEPARTURE…….+45
TOTAL COOLING UNITS LAST SEASON TO DATE……..760  DEPARTURE……-110

PEAK WIND GUST (MPH):
                     Official……………….49 ENE @  1:31 A.M.
                     AEROVANE (south tower)…..52 ENE @  1:33 A.M.
                     VECTOR #2 (south tower)….55     @  1:31 A.M.
                     DAVIS #2 (south tower)…..47 E   @  1:09 A.M.
                     ASOS………..OUT OF SERVICE D/T RENOVATIONS
                     VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
                     DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
                     RMY…………OUT OF SERVICE D/T RENOVATIONS  
                     MERLIN………OUT OF SERVICE D/T RENOVATIONS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………33 ENE @  1:31 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..32     @  1:12 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………32 E   @  1:13 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE…….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY AVERAGE……..OUT OF SERVICE D/T RENOVATIONS

AVERAGE WIND SPEED AND DIRECTION:
                     CONTACTING/OFFICIAL…….14.0 NNW  [337 total miles]
                     VECTOR #2……………..14.4
                     DAVIS #2………………14.0 NNW
                     RMY……………..OUT OF SERVICE D/T RENOVATIONS
                     ASOS…………….OUT OF SERVICE D/T RENOVATIONS
                     VECTOR #1………..OUT OF SERVICE D/T RENOVATIONS
                     DAVIS #1…………OUT OF SERVICE D/T RENOVATIONS   

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….4.00  DEPARTURE….+3.78
TOTAL PRECIPITATION FOR THE MONTH………….4.00  DEPARTURE….+3.78
TOTAL PRECIPITATION FOR THE YEAR………….44.34  DEPARTURE….+9.77

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

08/01   77/58/68/-5/T/589/68             23 SSW AERO 24 SSW RMY N/A
08/02   78/61/70/-3/T/821/95             28 WNW AERO 28 WNW RMY N/A
08/03   76/60/68/-5/0.00/302/35          15 N   AERO 16 N   RMY N/A
08/04   75/61/68/-5/0.71/077/09          21 ESE AERO 21 ESE RMY N/A
08/05   68/61/65/-8/1.68/000/00          28 NE  AERO 28 NE  RMY N/A
08/06   85/62/74/+1/0.00/727/85          19 S   AERO 20 WSW RMY N/A
08/07   88/66/77/+4/0.00/520/61          23 SW  AERO 23 SW  RMY N/A
08/08   80/67/74/+2/T/128/15             16 SW  AERO 16 WNW RMY N/A
08/09   75/64/70/-2/0.25/076/09          22 ENE AERO 21 NE  RMY N/A
08/10   78/63/71/-1/0.12/203/24          19 S   AERO 20 S   RMY N/A
08/11   89/70/80/+8/0.00/667/79          29 SSW AERO 28 SSW RMY N/A
08/12   91/71/81/+9/T/580/69             36 WSW AERO 37 WSW RMY N/A TSTM
08/13   92/73/83/+11/0.00/696/83         18 WSW AERO 18 WSW RMY N/A
08/14   87/69/78/+6/T/601/72             25 W   AERO 25 NNW RMY N/A
08/15   80/62/71/-1/0.00/800/96          19 NNW AERO 20 NNW RMY N/A
08/16   78/59/69/-3/0.00/564/68          15 S   AERO 15 S   RMY N/A
08/17   82/63/73/1/0.00/555/67           22 SSW AERO 23 SSW RMY N/A
08/18   86/66/76/+5/0.00/338/41          21 SSW AERO 22 SSW RMY N/A
08/19   81/69/75/+4/0.62/222/27          41 S   AERO 43 S   RMY N/A
08/20   78/70/74/+3/0.01/…/..          21 WSW AERO N/A    RMY N/A
08/21   86/69/78/+7/0.00/…/..          17 S   AERO 17 S   RMY N/A
08/22   74/66/70/-1/0.78/…/..          47 ESE AERO 48 ESE RMY N/A
08/23   83/68/76/+5/1.17/…/..          25 SSE AERO 26 SSE RMY N/A TSTM
08/24   86/67/77/+6/0.01/…/..          21 NNW AERO 21 NNW RMY N/A
08/25   89/70/80/+10/0.00/…/..         17 SW  AERO 18 SW  RMY N/A
08/26   92/72/82/+12/0.00/…/..         19 WSW AERO 18 WSW RMY N/A
08/27   89/70/80/+10/T/…/..            30 ENE AERO 30 ENE RMY N/A
08/28   70/59/65/-5/0.02/…/..          34 ENE AERO 34 ENE RMY N/A
08/29   72/59/66/-4/T/…/..             20 S   AERO 21 S   RMY N/A
08/30   84/67/76/+7/0.00/…/..          25 SW  AERO 26 SW  RMY N/A
08/31   80/65/73/+4/0.00/…/..          27 WNW AERO 28 WNW RMY N/A

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

09/01   68/56/62/-7/…./…/..          34 NNE AERO 37 NNE RMY N/A    
09/02   71/55/63/-6/…./…/..          49 ENE AERO 52 ENE RMY N/A TSTM

09/03   The low since midnight is 52F, the daily normal low is 60F

RECORDS FOR THE MONTH

08/22 NEW PEAK GUST RECORD OF 47 MPH,
      BEATING THE OLD RECORD OF 44 MPH IN 1987

DAILY EXTREMES

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

RECORDS FOR SEPTEMBER 3
HIGH 95F IN 1929
LOW 43F IN 1893
PRECIP 3.82 INCHES IN 1972 (TROPICAL STORM CARRIE)
PEAK GUST 58 MPH NNE IN 1972 (TROPICAL STORM CARRIE)

RECORDS FOR SEPTEMBER 4
HIGH 90F IN 1953, 1973
LOW 46F IN 1987
PRECIP 3.22 INCHES IN 1922
PEAK GUST 47 MPH SE IN 1966

TODAY’S REPORT PREPARED BY: Benjamin Turner

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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

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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

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All other uses require prior written authorization from the Observatory.

§ 04

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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
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§ 06

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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

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§ 08

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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

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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

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Part III — General Provisions
§ 17–20

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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
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