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Friday, February 14, 2020

February 14, 2020

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, 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 FRIDAY, FEBRUARY 14, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME BRIGHTER SKIES AND COLDER AIR RETURN TO GREAT BLUE HILL…. A cold front swept through the area just before sunrise today, yielding falling temperatures and increasing wind. Between the 7AM and 10AM observations, the air temperature and dew point dropped 5 degrees and 8 degrees respectively. The air continued to dry out with a dew point of just 4 degrees by 1 PM – a 17 degree drop since 7 AM! Clouds eventually cleared early this afternoon leading to brilliant sunshine. Visibility is much improved since yesterday capping out this afternoon at a solid 85 miles with decent view of Mount Monadnock in southwestern New Hampshire. Winds have not been too busy despite the cold front swinging through. Our max gust so far today is 30 MPH. The high so far today is 33F (before sunrise), 4 degrees below the normal high of 37F. The low since midnight is 23F, 4 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 ins. 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: Broken Stratocumulus, Altostratus layer distant E-S moving SE Temperature: 28F; Dew Point: 21F; Wind: WNW at 10G24 kts Sea-level pressure: 30.05 ins. Hg: rising unsteadily Visibility: 80 miles 6-hr Max temp: 33F 6-hr Min temp: 28F 24-hr Precip:  0.09 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 E25 BKN 80 175/28/21/3010G24/005/ AS LYR DSNT E-S MVG SE/ 8/420 70009 52047 10033 20028 10 A.M. Weather: Scattered Cumulus, Altostratus layer distant E-SW moving SE Temperature: 23F; Dew Point: 13F; Wind: NW at 12G25 kts, Sea-level pressure: 30.18 ins. Hg: rising then rising more slowly Visibility: 80 miles 3-hr Precip:  Trace 3-hr Snowfall: Trace BHO SA 1455 35 SCT 80 221/23/13/3212G25/018/ AS LYR DSNT SE-SW MVG SE NEW SNW PST 3 HRS TRACE/ 8/420 600// 51046 1 P.M. Weather: Clear, Few Cumulus distant SE-SW and offshore distant NE-SE Temperature: 23F; Dew Point: 4F; Wind: NNW at 12G20 kts, Sea-level pressure: 30.24 ins. Hg: rising then rising more slowly Visibility: 85 miles 6-hr Max temp: 28F 6-hr Min temp: 23F 6-hr Precip:  Trace 6-hr Snowfall: Trace BHO SA 1755 CLR 85 239/23/4/3412G20/024/ FEW CU DSNT SE-SW AND OFFSHR DSNT NE-SE/ 8/100/ 600// 51018 10028 20023 SUMMARY FOR THURSDAY, FEBRUARY 13, 2020 TEMPERATURE (DEGREES F) MAX…..36   NORMAL…..36 MIN…..31   NORMAL…..19 MEAN….34   NORMAL…..28 DEPARTURE FROM 30-YEAR NORMAL………………..+6 TOTAL DEPARTURE FOR THE MONTH………………+104 [+7.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY……………31  DEPARTURE……..-6 TOTAL HEATING UNITS FOR THE MONTH…………..395  DEPARTURE…. .-105 TOTAL HEATING UNITS FOR THE SEASON…………3624  DEPARTURE……-407 TOTAL HEATING UNITS LAST SEASON TO DATE…….3935  DEPARTURE……-311 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY………………..29 SSW AT 12:39 A.M. AERO…………………….29 SSW AT 12:42 A.M. ASOS…………………….30 SSW AT 12:40 A.M. DAVIS……………………30 SSW AT 12:39 A.M. RMY N/A FASTEST MILE FOR YESTERDAY………………….23 SSW AT 12:52 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE……………….22 SSW AT 12:40 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE………………22 SSW AT 12:39 A.M. AVERAGE WIND SPEED AND DIRECTION…………..6.3 W ASOS…………………..7.5 DAVIS………………….7.1 WSW [242 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.09  DEPARTURE……-0.06 ASOS…………..0.12 TOTAL PRECIPITATION FOR THE MONTH……….1.89  DEPARTURE……+0.11 ASOS…………..2.00 TOTAL PRECIPITATION FOR THE YEAR………..3.35  DEPARTURE……-2.78 ASOS…………..3.54 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.5 TOTAL SNOWFALL FOR THE MONTH…………….0.6  DEPARTURE…….-5.8 TOTAL SNOWFALL FOR THE SEASON…………..24.8  DEPARTURE……-14.7 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/+5/0.04/0.3/350/63           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  41/30/36/+9/0.00/0.0/…/..         37 W   AERO 36 W   RMY N/A 02/13  36/31/34/+6/…./…/…/..        29 SSW AERO 29 SSW RMY N/A 02/14 The low since midnight is 23F, 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 14 HIGH 56F IN 1949 LOW -14F IN 2016 PRECIP 2.09 INCHES IN 2007 SNOWFALL 11.0 INCHES IN 1914 PEAK GUST 83 MPH SSW IN 2000 RECORDS FOR FEBRUARY 15 HIGH 60F IN 1954 LOW -18F IN 1943 PRECIP 1.28 INCHES IN 1950 SNOWFALL 14.4 INCHES IN 2015 PEAK GUST 94e MPH WNW IN 1946 TODAY’S REPORT PREPARED BY: Andrew Swanson
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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:

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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
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§ 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

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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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