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Sunday, August 13, 2017

August 14, 2017

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, 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
SUNDAY, AUGUST 13, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

DRIER AIR MOVES IN

Dew points were falling today as high pressure brought warm
and dry air into the region.  Morning dew points measured
in the upper 60s and fell to 60F with 48% relative humidity
at 1:00PM EST.  Temperatures stayed warm over the evening
with an overnight low of 67F before midnight.  They had
reached 81F by 10:00AM and had warmed to a max. of 82F by
1:00PM.

Winds at the beginning of the day were out of the southwest
but had shifted westerly by mid-morning.  Moderate gusts
and drier air helped to clear morning fog and haze out of
the area for 70 miles of visibility in the afternoon.

 

Today’s Observations:

7 A.M.
Weather: Scattered cumulus, scattered altocumulus
Temperature: 71F; Dew Point: 68F; Wind: SW at 5 kts,
Wind speed: Light
Sea-level pressure: 29.88 ins. Hg, rising, then less quickly
Visibility: 25 miles, distant fog in all directions
6-hr Max temp: 71F
6-hr Min temp: 68F
24-hr precip: 0.00 in.
BHO SA 1155 14 SCT 66 SCT 25 119/71/68/2305/988/ DSNT FG ALQDS
WND LGT/ 8/130 51007 10071 20068

10 A.M.
Weather: Scattered cumulus
Temperature: 81F; Dew Point: 64F; Wind: W at 6 kts,
Wind speed: Light
Sea-level pressure: 29.89 ins. Hg, rising then falling
Visibility: 50 miles, distant haze in all directions
BHO SA 1455 31 SCT 50 123/81/64/2806/989/ DSNT HZ ALQDS WND LGT/
8/100 50004

1 P.M.
Weather: Scattered cumulus
Temperature: 82F; Dew Point: 60F; Wind: W at 12G17 kts
Sea-level pressure: 29.88 ins. Hg, falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 82F
6-hr Min temp: 71F
BHO SA 1755 49 SCT 70 120/82/60/2812G17/988/ 8/100 56003 10082
20071

SUMMARY FOR SATURDAY, AUGUST 12, 2017

TEMPERATURE (DEGREES F)
MAX…..75   NORMAL…..80
MIN…..57   NORMAL…..62
MEAN….66   NORMAL…..71

DEPARTURE FROM 30-YEAR NORMAL…………………….-5
TOTAL DEPARTURE FOR THE MONTH…………………….-4 [-0.5 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………1   DEPARTURE……….-6
TOTAL COOLING UNITS FOR THE MONTH…………..77   DEPARTURE……….-7
TOTAL COOLING UNITS FOR THE SEASON…………498   DEPARTURE………+63
TOTAL COOLING UNITS LAST SEASON TO DATE…….597   DEPARTURE………-99

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….22 SSW AT 10:19 P.M.*
AERO……………………22 SSW AT 10:16 P.M.
ASOS……………………23  S  AT  9:56 P.M.
DAVIS…………………..22 SSW AT  9:19 P.M. RMY 23
FASTEST MILE FOR YESTERDAY…………………17 SSW AT 10:14 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………18 SSW AT  9:21 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..18 SSW AT 10:14 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.9  S
ASOS…………………..7.9
DAVIS………………….6.5 SSW [203 DEG.] *last of multiple 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……….1.39  DEPARTURE……-0.33
ASOS…………..1.38
TOTAL PRECIPITATION FOR THE YEAR……….36.15  DEPARTURE……+3.44
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings

 

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

8/1  87/65/76/+4/0.00/762/88               16 ESE*AERO 16 NNW RMY 16
8/2  86/65/76/+4/1.09/372/43               32 W   AERO 36 W   RMY 34 TSTM
8/3  83/65/74/+2/0.00/552/64               22 S   AERO 23 S   RMY 24
8/4  84/66/75/+3/0.00/697/81               26 S   AERO 30 S   RMY 29
8/5  75/63/69/-3/0.10/060/07               23 NW  AERO 28 NW  RMY 29
8/6  76/57/67/-5/0.00/795/93               30 NW  AERO 32 NW  RMY 31
8/7  76/60/68/-4/0.01/597/70               28 SSW AERO 28 SSW RMY 29
8/8  74/60/67/-5/0.02/000/00               17 S   AERO 16 SSE RMY 16
8/9  83/58/71/-1/0.00/…/..               18 S   AERO 18 S   RMY 19
8/10 86/63/75/+4/T/…/..                  20 S   AERO 18 S   RMY 20
8/11 82/63/73/+2/0.00/…/..               17 S   AERO 16 S   RMY 17
8/12 75/57/66/-5/0.17/…/..               22 SSW*AERO 22 SSW RMY 23

8/13  Low temp since midnight is 67F; normal low is now 62F

 

DAILY RECORDS FOR AUGUST

None so far.

 

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

RECORDS FOR AUGUST 13
HIGH 98F IN 1944, 2002
LOW 47F IN 1902, 1957
PRECIP 2.92 INCHES IN 1989
PEAK GUST 52 MPH SSE IN 1963

RECORDS FOR AUGUST 14
HIGH 99F IN 2002
LOW 46F IN 1964
PRECIP 3.06 INCHES IN 1919
PEAK GUST 61 MPH WNW IN 1963

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle

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