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Thursday, August 22, 2013

August 22, 2013

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

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, AUGUST 22, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME VERY WARM, HAZY AND HUMID TODAY Today is warm and humid with lots of haze. This morning’s visibility was only about 10 miles. Temperatures this afternoon reached into the mid 80s. This will allow the day to finish above normal for the third time in a row. This is our longest streak of above normal temperatures since July 24, where we started a cool pattern on July 25th. We have not reached 90F since July 20 (93F) and we might struggle to hit 90F today. There is an upper level layer of cirrus clouds, along with lower level cumulus. The clouds could keep the temperatures from reaching the highest possible max. The clouds are from downpours that have developed across CT and RI. Below normal precipitation The month of August has been dry and we are now running below normal for rain (-0.33 inches). The last significant rainfall was on August 9th, with a total of 2.21 inches. Today there is plenty of moisture in the air with dew point readings in the mid 60s (66F at the time of report). If our atmosphere allows rain to develop, it should be able to give us measurable precipation. The last time we had measurable precipitation was on August 13th with only 0.02 inches. An interesting fact about August is that we have had lots of sunshine! We are around 68% of possible sunshine. The normal is about 58%. We are running 10 points above normal, with only one day in August without observable sunshine. Today’s Observations: 7 A.M. Weather: Scattered dense cirrus, thin broken cirrus, thin overcast cirrus Temperature: 70F; Dew Point: 64F; Wind: SW at 8 kts. Sea-level pressure: 30.01 ins. Hg, falling slightly Visibility: 12 miles, hazy, thin fog below dissipating inversion all quadrants, top of inversion estimated 7 hundred feet over city N, hazy all quadrants 6-hr min. temp: 67F BHO SA 1155 220 SCT 250 –SCT 300 –OVC 9 163/70/64/2208/001/ PTCHS DNS CI S-W AND FEW NNW FEW CC OVHD THN F BLO INVSN ESTMTD TOP 7 HND OVR CTY N HAZY ALQDS/ 8/002 56004 10070 20067 10 A.M. Weather: Scattered cirrus, thin broken and thin overcast cirrus, few altocumulus and altocumulus lenticularis SW Temperature: 83F; Dew Point: 68F; Wind: WSW at 6 kts, Sea-level pressure: 30.00 ins. Hg, falling slightly Visibility: 10 miles, NE 12 miles, hazy BHO SA 1455 220 SCT 250 –BKN 300 –OVC 10 159/83/68/2406/000/ FEW AC/ACSL SW VSBY NE 12 HAZY ALQDS/ 8/041 56004 1 P.M. Weather: Scattered cumulus, moderate cumulus, few towering cumulus vicinity NW-NNE, cumulonimbus/showers of rain and dark south, activity moving ENE, few towering cumulus distant NW-NNW, overcast partly thin vicinity NW-NNE, sun dimly visible Temperature: 82F; Dew Point: 69F; Wind: SSW at 12 kts, Wind: Direction variable S-WSW Sea-level pressure: 29.95 ins. Hg, falling then more slowly Visibility: 12 miles, except 7 miles, rain shower S, hazy 6-hr max. temp: 84F BHO SA 1755 45 SCT E200 BKN 250 OVC 12 143/82/69/2112/995/ CB/SHRA DRK S MOVG ENE FEW TCU DSNT NW-NNW FEW MDT CU ALQDS SUN DMLY VSB OVC PTLY THN VC NW-NNE HAZY ALQDS WND 17V25/ 8/203 56016 10084 20070 WEATHER SUMMARY FOR WEDNESDAY, AUGUST 21, 2013 TEMPERATURE (DEGREES F) MAX…..87 NORMAL…..79 MIN…..65 NORMAL…..61 MEAN….76 NORMAL…..70 DEPARTURE FROM 30-YEAR NORMAL…………………..+6 TOTAL DEPARTURE FOR THE MONTH………………….-34 [-1.7 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY………….11 DEPARTURE………+5 TOTAL COOLING UNITS FOR THE MONTH…………100 DEPARTURE……..-38 TOTAL COOLING UNITS FOR THE SEASON………..583 DEPARTURE……..+94 TOTAL COOLING UNITS LAST SEASON TO DATE……644 DIFFERENCE…….-61 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY…………….18 WSW AT 11:17 P.M AERO…………………18 WSW AT 11:17 P.M ASOS…………………18 WSW AT 11:17 P.M DAVIS………………..16 SSW AT 3:41 P.M FASTEST MILE FOR YESTERDAY………………13 WSW AT 11:33 P.M MAXIMUM 2-MINUTE ASOS AVERAGE……………13 WSW AT 11:51 P.M MAXIMUM 2-MINUTE DAVIS AVERAGE…………..12 NW AT 3:41 P.M AVERAGE WIND SPEED AND DIRECTION………..8.2 WSW ASOS………………..8.2 DAVIS……………….7.1 W [260] * last of several occurrences… PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M… 0.00 DEPARTURE…………-0.13 ASOS…………..0.00 TOTAL PRECIPITATION FOR THE MONTH……….2.55 DEPARTURE…………-0.33 ASOS…………..2.60 TOTAL PRECIPITATION FOR THE YEAR……….37.84 DEPARTURE…………+3.97 ASOS…………..N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY: RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ….: Data not yet available, records not finalized 8/1 81/62/72/0/0.01/503/58 25 S AERO 26 MPH S RMY 27 8/2 81/62/72/0/0.23/518/60 26 W AERO 26 MPH W RMY 28 8/3 77/63/70/-2/T/276/32 22 WSW AERO 23 MPH WSW RMY 23 8/4 79/58/69/-3/T/645/75 25 WNW AERO 21 MPH WNW RMY 26 8/5 75/54/65/-7/0.00/858/100 26 WNW AERO 25 MPH WNW RMY 27 8/6 78/56/67/-5/0.00/846/99 17 ESE AERO 15 MPH S RMY 16 8/7 80/59/70/-2/0.00/759/89 21 S AERO 21 MPH S RMY N/A 8/8 79/62/71/-1/0.08/153/18 25 S AERO 25 MPH S RMY N/A 8/9 73/70/72/0/2.21/000/00 37 S AERO 39 MPH S RMY 40 8/10 81/61/71/-1/0.00/795/94 30 WNW AERO 31 MPH WNW RMY 31 8/11 78/58/68/-3/0.00/835/99 18 W AERO 18 MPH W RMY 21 8/12 81/62/72/+1/0.00/656/78 18 W AERO 17 MPH WSW RMY 19 8/13 73/64/69/-2/0.02/193/23 16 SSE AERO 15 MPH SSE RMY N/A 8/14 73/57/65/-6/0.00/819/98 35 W AERO 35 MPH W RMY 35 8/15 75/53/64/-7/0.00/808/97 23 W AERO 23 MPH W RMY 24 8/16 77/57/67/-4/0.00/740/89 20 W AERO 19 MPH W RMY 21 8/17 77/59/68/-3/0.00/770/93 18 W AERO 18 MPH W RMY N/A 8/18 80/62/71/0/T/231/28 16 SSW AERO 17 MPH SSW RMY 18 8/19 82/58/70/0/T/…/.. 17 W AERO 18 MPH W RMY 20 8/20 85/64/75/+5/0.00/…/.. 17 NW AERO 18 MPH NW RMY N/A 8/21 87/65/76/+6/0.00/…/.. 18 WSW AERO 18 MPH WSW RMY 18 8/22 morning low temp: 67F; the normal low is now 61 F DAILY RECORDS FOR AUGUST 2013 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 22 HIGH 90F IN 1939 LOW 42F IN 1894 PRECIP 2.28 INCHES IN 1935 PEAK GUST 44 MPH SSW IN 1987 RECORDS FOR AUGUST 23 HIGH 88F IN 1918, 1947, 1949, 1996 LOW 45F IN 1923 PRECIP 2.09 INCHES IN 2010 PEAK GUST 60e MPH NW IN 1940 TODAY’S REPORT PREPARED BY: ROBERT SKILLING AND KEVIN PECORA
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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

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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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§ 03

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§ 04

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“Data provided by the Blue Hill Observatory & Science Center, Milton, Massachusetts. Continuous weather observations since 1885.”

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§ 05

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§ 06

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§ 07

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§ 08

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Part II — Privacy Policy
§ 09–10

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§ 11–12

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§ 13

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Part III — General Provisions
§ 17–20

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Effective January 1, 2025 · Blue Hill Observatory & Science Center · Milton, Massachusetts
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