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Monday, August 24, 2015

August 24, 2015

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, 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
MONDAY, AUGUST 24, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

DRIZZLE AND FOG OVERNIGHT, SKIES SLOW TO CLEAR MONDAY

Thick fog has come and gone since Sunday, with only 1/8
of a mile visibility at this morning’s 7:00 AM EST observation.
Very light drizzle was intermittent this morning as well, ending
before the 10:00 AM EST observation. At that time fog was slowly
lifting from the summit.

By the 1:00 PM EST observation breaks of sun were visible all
around the region, with isolated showers to the S and WSW-W
of the station. Some thin fog was noted just outside of Boston
Harbor and near the harbor islands. The observation recorded
a maximum temperature so far of 77F.
Today’s Observations:

7 A.M.
Weather: Thick fog
Temperature: 67F; Dew Point: 67F; Wind: estimated ENE at 4 kts,
Wind: Light
Sea-level pressure: 29.96 ins. Hg, rising then more quickly
Visibility: 1/8th of a mile, Fog
6-hr Max temp: 68F
6-hr Min temp: 67F
24-hr precip: 0.08 ins.
BHO SA 1155 W1 X 1/8F 146/67/67/E0604/996/ SUN DMLY VSBL WND LGT/
8//// 530008 ASOS 70010 MANUAL 70008 10068 20067

10 A.M.
Weather: Overcast stratus, partial fog WSW-E
Temperature: 71F; Dew Point 69F; Wind: Calm
Sea-level pressure: 29.96 ins. Hg, rising, then falling and lower
Visibility: 3 miles, except 20 miles ESE-SW
3-hr precip: trace
BHO SA 1455 -X E3 OVC 3F 145/71/69/E0000/996/ F/ VSBY ESE-SW 20 MI
PARTIAL FG WSW-E WND CALM/ 8/6// 58001 MANUAL 6////

1 P.M.
Weather: Scattered cumulus, broken altocumulus, few cumulus
fractus in all directions, showers distant S and WSW-W
Temperature: 77F; Dew Point: 69F; Wind: estimated E at 2 kts,
Wind Speed: Light
Sea-level pressure: 29.93 ins. Hg, falling, then more quickly
Visibility: 40 miles, except 10 miles WSW-W obscured by
distant rain showers
6-hr Max temp: 77F
6-hr Min temp: 67F
6-hr Precip Trace
BHO SA 1755 40 SCT E70 BKN 40 135/77/69/E0902/993/ VSBY WSW-W
10 MI SHWRS DSNT S AND WSW-W MDT CU SW FEW CUFRA ALQDS THN FG
ALQDS WND LGT/ 8/730 58010 MANUAL 6//// 10077 20067
SUMMARY FOR SUNDAY, AUGUST 23, 2015

TEMPERATURE (DEGREES F)
MAX…..70   NORMAL…..78
MIN…..66   NORMAL…..61
MEAN….68   NORMAL…..70

DEPARTURE FROM 30-YEAR NORMAL……………………-2
TOTAL DEPARTURE FOR THE MONTH…………………..+64  [+2.6 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………3    DEPARTURE………-2
TOTAL COOLING UNITS FOR THE MONTH………….206   DEPARTURE………+57
TOTAL COOLING UNITS FOR THE SEASON…………600   DEPARTURE……..+100
TOTAL COOLING UNITS LAST SEASON TO DATE…….430   DIFFERENCE…….+170

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….20  ENE  AT   8:40 P.M.
ASOS……………………19  ENE  AT   8:39 P.M.
DAVIS…………………..18  ENE  AT   8:39 P.M. RMY 18
FASTEST MILE FOR YESTERDAY…………………12  ENE  AT   8:40 P.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE………………15  ENE  AT   8:40 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..13  E    AT   8:40 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..6.1 NE
ASOS…………………..6.5
DAVIS………………….5.8 NE [041 deg.] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.08  DEPARTURE…..-0.05
ASOS……………0.10
TOTAL PRECIPITATION FOR THE MONTH………..2.89  DEPARTURE…..-0.24
ASOS…………..2.88
TOTAL PRECIPITATION FOR THE YEAR………..30.25  DEPARTURE…..-3.87
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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

8/1  88/68/78/+6/0.06/729/84               28 WNW RMY N/A
8/2  86/62/74/+2/0.00/865/100              24 SW  RMY N/A
8/3  89/68/79/+7/0.00/690/80               31 S   RMY N/A
8/4  86/66/76/+4/0.31/422/49               45 W   RMY 50  TSTM
8/5  84/64/74/+2/0.00/765/89               28 WNW RMY 27
8/6  80/59/70/-2/0.00/685/80               22 W   RMY 21
8/7  78/61/70/-2/0.00/845/99               20 ESE RMY 18
8/8  77/58/68/-4/0.00/741/87               18 E   RMY N/A
8/9  72/59/66/-6/T/458/54                  27 NNE RMY 26
8/10 84/58/71/0/0.00/…/..                28 S   RMY N/A
8/11 70/63/67/-4/0.52/000/00               32 SSE RMY 35
8/12 83/65/74/+3/0.00/766/91               22 W   RMY 20
8/13 83/62/73/+2/0.00/832/99               18 WNW RMY 18
8/14 86/63/75/+4/0.00/837/100              21 S   RMY 23
8/15 91/66/79/+8/…./…/..               38 W   RMY 41  TSTM
8/16 87/65/76/+5/…./…/..               16 W   RMY N/A
8/17 90/70/80/+9/0.00/…/..               17 W   RMY 18
8/18 92/70/91/+10/0.27/…/..              31 W   RMY 32  TSTM
8/19 87/69/78/+8/0.00/…/..               23 S   RMY 24
8/20 85/70/78/+8/0.00/…/..               22 ESE RMY 22
8/21 82/69/76/+6/0.31/…/..               21 S   RMY 23
8/22 73/66/70/0/T/…/..                   18 ENE RMY 16
8/23 70/66/68/-2/0.18/000/00               20 ENE RMY 18

8/24 low since midnight is 66F; normal low is now 61F

DAILY RECORDS FOR AUGUST 2015
None so far.

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

RECORDS FOR AUGUST 24
HIGH 92F IN 1947
LOW 43F IN 1971
PRECIP 2.40 INCHES IN 2010
PEAK GUST 54 MPH W IN 1986

RECORDS FOR AUGUST 25
HIGH 93F IN 1947, 1948, 2007
LOW 41F IN 1940
PRECIP 2.69 INCHES IN 2010
PEAK GUST 60e MPH SSW IN 1941

TODAY’S REPORT PREPARED BY: Brian Fitzgerald

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Please read the full Policy before accessing Observatory data · Effective January 1, 2025

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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