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Wednesday, February 12, 2020

February 12, 2020

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

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, FEBRUARY 12, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME ABUNDANT SUNSHINE DESPITE A GOOD AMOUNT OF UPPER-LEVEL CLOUD COVER…. Visibility today is great compared to yesterday, with a perfect visibility of 90 miles being seen at the 10 A.M. observation. Cloud cover has consisted of either fair weather cumulus or cirrostratus, which covered most of the sky by 1 P.M. Yesterday’s rainfall totaled 0.21 inches, measured at 7 A.M. Conditions are drying slightly, reaching 42% relative humidity by noontime. Wind has been around 15 mph for most of the day, advecting a good amount of cold air from the west. Clouds moved in fast since this morning, signifying strong upper level winds. The high so far today is 41F, 5 degrees above the normal high of 36F. The low since midnight is 30F, 11 degrees above the normal low of 19F. PRELIMINARY STATS FOR JANUARY 2020 TEMPERATURE, Deg. F Avg. Max. 40.6 [+6.8] Avg. Min. 25.9 [+8.8] Mean      33.3 [+7.8] 24-hour corrected mean: 32.8 Max. for month: 68F on the 12th Min. for month: 8F on the 18th HEATING DEGREE DAYS Total heating units:    978 [-248] Total for the season:  3229 [-302] Total for last season: 3495 PRECIPITATION, Inches Total: 1.46 [-2.89] Greatest in 24 hrs: 0.57 inches on the 25th SNOWFALL, Inches Total: 4.2 [-12.9] Greatest in 24 hrs: 3.0 ins. on the 18th-19th WIND, mph Avg. uncorrected wind speed: 12.3 mph Avg. corrected wind speed:   12.8 mph Prevailing wind direction:   W [19%] Peak gust and direction:     60 SSW on the 12th SUNSHINE: Campbell-Stokes card minutes: 8388 minutes of possible 17130 or 49% Astronomical total minutes: 8642 minutes of possible 17639 or 49% JANUARY 2020 RANKED 9TH WARMEST ON RECORD! Warmest 24-Hour Adjusted Mean Temperature, deg F (1886-2020): 1) 35.6 in 1913 2) 35.0 in 1932 3) 34.6 in 1937 4) 33.9 in 2006 5) 33.8 in 1933 33.8 in 1950 33.8 in 1990 8) 33.5 in 2002 9) 32.8 in 2020 10) 32.7 in 2017 Today’s Observations: 7 A.M. Weather: Scattered cumulus and stratocumulus Temperature: 32F; Dew Point: 22F; Wind: WNW at 12G19 kts Sea-level pressure: 30.04 ins. Hg: rising rapidly Visibility: 70 miles 6-hr Max temp: 35F 6-hr Min temp: 30F 24-hr Precip:  0.21 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 E40 SCT 70 174/32/22/2912G20/004/ 8/800 70021 53047 10035 20030 10 A.M. Weather: Broken cirrostratus, few cumulus SW-NE, smoke plume to the WNW Temperature: 34F; Dew Point: 23F; Wind: WNW at 13G19 kts Sea-level pressure: 30.15 ins. Hg: falling then rising Visibility: 90 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 E250 BKN 90 211/34/23/2913G19/015/ FEW CU SW-NE K PLUME WSW/ 8/108 51037 1 P.M. Weather: Broken cirrostratus Temperature: 39F; Dew Point: 18F; Wind: W at 9G14 kts Sea-level pressure: 30.13 ins. Hg: falling slowly Visibility: 80 miles 6-hr Max temp: 41F 6-hr Min temp: 32F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 E250 BKN 80 206/39/18/2809G14/013/ 8/008 58005 10041 20032 SUMMARY FOR TUESDAY, FEBRUARY 11, 2020 TEMPERATURE (DEGREES F) MAX…..40   NORMAL…..36 MIN…..36   NORMAL…..18 MEAN….38   NORMAL…..27 DEPARTURE FROM 30-YEAR NORMAL……………….+11 TOTAL DEPARTURE FOR THE MONTH……………….+89 [+7.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY……………27  DEPARTURE…….-11 TOTAL HEATING UNITS FOR THE MONTH…………..335  DEPARTURE…….-90 TOTAL HEATING UNITS FOR THE SEASON…………3564  DEPARTURE……-392 TOTAL HEATING UNITS LAST SEASON TO DATE…….3862  DEPARTURE……-298 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY………………..24 W   AT 11:48 P.M. AERO…………………….23 W   AT 11:32 P.M. ASOS…………………….23 W   AT 11:50 P.M. DAVIS……………………24 WNW AT 11:14 P.M. RMY N/A FASTEST MILE FOR YESTERDAY………………….17 W   AT 11:58 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE……………….17 W   AT 11:59 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE………………18 W   AT 11:32 P.M. AVERAGE WIND SPEED AND DIRECTION……………5.8 ENE ASOS……………………5.8 DAVIS…………………..6.1 NNW [336 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.21  DEPARTURE……+0.07 ASOS…………..0.24 TOTAL PRECIPITATION FOR THE MONTH……….1.31  DEPARTURE……-0.18 ASOS…………..1.41 TOTAL PRECIPITATION FOR THE YEAR………..2.77  DEPARTURE……-3.07 ASOS…………..2.95 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.5 TOTAL SNOWFALL FOR THE MONTH…………….0.1  DEPARTURE…….-5.3 TOTAL SNOWFALL FOR THE SEASON…………..24.3  DEPARTURE……-14.2 PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 01/01  38/30/34/+7/0.00/0.0/400/73           39 W   AERO 38 W   RMY 41 01/02  46/29/38/+11/0.00/0.0/269/49          28 SW  AERO 28 SW  RMY 30 01/03  46/40/43/+17/0.00/0.0/000/00          21 SW  AERO 18 SW  RMY N/A 01/04  46/36/41/+15/0.15/0.0/000/00          16 NNW AERO 16 NNW RMY N/A 01/05  36/24/30/+4/0.15/0.5/116/21           43 NW  AERO 46 NW  RMY 43 01/06  33/23/28/+2/T/T/133/24                26 W   AERO 21 W   RMY N/A 01/07  38/29/34/+8/0.01/0.4/161/29           30 WSW AERO 28 WSW RMY N/A 01/08  39/22/31/+5/0.04/0.4/350/63           50 W   AERO 46 WNW RMY 47 01/09  28/16/22/-4/0.00/0.0/540/97           43 WNW AERO 40 WNW RMY N/A 01/10  48/23/36/+11/T/T/106/19               37 SW  AERO 37 SW  RMY 39 01/11  65/46/56/+31/0.00/0.0/408/73          53 SSW AERO 53 SSW RMY N/A 01/12  68/36/52/+27/0.09/0.0/297/53          60 SSW AERO 62 SSW RMY N/A 01/13  39/31/35/+10/0.01/T/000/00            21 NE  AERO 20 NE  RMY N/A 01/14  38/31/35/+10/0.01/0.0/000/00          16 W   AERO 15 W   RMY N/A 01/15  48/35/42/+17/0.00/0.0/503/89          24 W   AERO 23 W   RMY 24 01/16  42/24/33/+8/0.06/T/142/25             54 W   AERO 52 W   RMY 59 01/17  24/10/17/-8/0.00/0.0/552/97           50 NW  AERO 48 NW  RMY N/A 01/18  28/8/18/-7/0.35/2.8/000/00            28 WSW AERO 24 ESE RMY N/A 01/19  40/21/31/+6/0.02/0.2/332/58           44 W   AERO 44 W   RMY 42 01/20  26/12/19/-6/0.00/0.0/442/77           33 NW  AERO 32 NW  RMY N/A 01/21  24/10/17/-8/0.00/0.0/472/82           22 NW  AERO 21 NW  RMY N/A 01/22  34/13/24/-1/0.00/0.0/566/98           16 SW  AERO 16 SW  RMY N/A 01/23  46/26/36/+11/0.00/0.0/348/60          21 SW  AERO 20 SW  RMY 19 01/24  44/31/38/+13/0.00/0.0/524/90          21 ENE AERO 17 ENE RMY N/A 01/25  50/36/43/+18/0.57/0.0/000/00         41 ESE AERO 41 ESE RMY 40 01/26  49/35/42/+17/0.00/0.0/346/59         33 W   AERO 31 W   RMY 32 01/27  43/33/38/+13/0.00/0.0/106/18         30 W   AERO 29 W   RMY 29 01/28  37/30/34/+9/T/T/030/05               25 NW  AERO 25 NW  RMY 27 01/29  38/23/31/+6/0.00/0.0/522/88          24 N   AERO 23 N   RMY 24 01/30  34/16/25/-1/0.00/0.0/547/92          17 NNW AERO 16 NNW RMY N/A 01/31  43/24/34/+8/0.00/0.0/430/72          22 S   AERO 21 S   RMY 22 DAILY RECORDS FOR JANUARY 1/11/20: DAILY RECORD MAXIMUM TEMPERATURE OF 65F, BREAKS PREVIOUS RECORD OF 60F SET IN 1975. 1/11/20: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 46F, BREAKS PREVIOUS RECORD OF 40F SET IN 1983. 1/12/20: DAILY RECORD MAXIMUM TEMPERATURE OF 68F, BREAKS PREVIOUS RECORD OF 60 SET IN 2018. TIES HIGHEST MAXIMUM TEMPERATURE FOR JANUARY, MATCHES 68F SET ON 1/26/1950. PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 02/01  38/30/34/+8/0.01/T/…./..          14 WSW AERO 14 WSW RMY N/A 02/02  40/30/35/+9/0.00/0.0/…./..        18 W   AERO 18 WNW RMY 18 02/03  44/27/36/+10/0.00/0.0/…./..       28 W   AERO 28 W   RMY 28 02/04  44/33/39/+13/0.00/0.0/…./..       19 E   AERO 16 E   RMY 18 02/05  41/30/36/+10/0.00/0.0/…./..       20 NNW AERO 19 NNW RMY N/A 02/06  31/30/34/+8/0.00/0.0/…./..        29 E   AERO 28 E   RMY 27 02/07  53/25/39/+12/…./0.1/…./..       71 WSW AERO 71 SSW RMY 73 02/08  33/20/27/0/T/T/…./..              46 W   AERO 44 W   RMY 44 02/09  33/15/24/-3/T/T/…./..             30 SSE AERO 29 SSE RMY N/A 02/10  42/33/38/+11/…./0.0/…./..       39 SSW AERO 39 SSW RMY 39 02/11  40/36/38/+11/…./0.0/…/..        24 W   AERO 23 W   RMY N/A 02/12 The low since midnight is 30F, daily normal minimum is 19F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR FEBRUARY 12 HIGH 56F IN 1999 LOW -14F IN 1914 PRECIP 4.85 INCHES IN 1886 [RECORD FOR MONTH] SNOWFALL 15.0 INCHES IN 2006 PEAK GUST 70 MPH E IN 1985 RECORDS FOR FEBRUARY 13 HIGH 64F IN 1951 LOW -10F IN 1967 PRECIP 2.80 INCHES IN 2008 SNOWFALL 13.5 INCHES IN 1894 PEAK GUST 60 MPH SE IN 1972 TODAY’S REPORT PREPARED BY: Benjamin Turner and Greg White
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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

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
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  • 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
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  • 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
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