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Wednesday, August 7, 2013

August 8, 2013

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, 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
WEDNESDAY, AUGUST 7, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME

A WARMER START THIS MORNING, AND ANOTHER SUNNY DAY

The dew point has slowly risen last night into the 50’s,
which has allowed the overnight temperature to be slightly warmer
than Monday night and Tuesday morning. This afternoon has been quite
pleasant so far, with high temperatures in the middle to upper 70’s
with fair skies. The winds have been generally light throughout
the day, though periodically gusting to 20 mph.

Today marks the last day the average high will be 81F, from here
on out the average high temperature will decrease until we get
to January.

Today’s Observations:

7 A.M.
Weather: Scattered dense cirrus, thin broken/overcast cirrus two levels,
patches of dense cirrus NW-NE-E, dense cirrus in the vicinity NNW-N
Temperature: 65F; Dew Point: 57F; Wind: SSW at 6 kts
Sea-level pressure: 30.21 ins. Hg, rising slightly
Visibility: 50 miles, light distant haze
6-hr min. temp: 59F
BHO SA 1155 220 SCT 250 –BKN 300 –OVC 35 229/65/57/2006/021/
PTCHS DNS CI VC STN NW-N BINOVC DSNT N-ESE THN F LYR ALG HRZN DSNT E-SSW
VSBY WNW 50 THN F ALQDS LGT DSNT HZ/ 8/002 51004 10065 20059

10 A.M.
Weather:  Scattered dense cirrus, thin broken cirrus, thin overcast
cirrus, few altocumulus lenticularis distant WSW-NW,
patches of dense cirrus NE-ENE
Temperature: 75F; Dew Point: 53F; Wind: S at 7 kts,
Sea-level pressure: 30.20 ins. Hg, falling slightly
Visibility: 60 miles, NE to ENE, 25 miles hazy, NW 70 miles,
light distant haze
BHO SA 1455 220 SCT 250 –BKN 300 –OVC 60 228/75/53/1807/020/
CU FRMG DSNT ESE-S-W-N FEW ACSL DSNT WSW-NW DNS CI ALQDS
VSBY NE-ENE 25 HAZY VSBY NW 70 LGT DSNT HZ/ WND 15V21/ 8/142 58001

1 P.M.
Weather: Scattered dense cirrus, thin scattered cirrus (2 levels)
few altocumulus lenticularis distant NNE-SE, patches of dense
cirrus NW-NE-SE
Temperature: 79F; Dew Point: 54F; Wind: SSW at 9 kts,
Sea-level pressure: 30.19 ins. Hg, falling slightly
Visibility: 70 miles, light distant haze
6-hr max. temp: 79F
BHO SA 1755 220 SCT 250 –SCT 300 –SCT 70 223/79/54/2009/019/
SML CU ALQDS DNS CI NW-NE-SE LGT DSNT HZ WND 15V24/ 8/142
58005 10079 20065

WEATHER SUMMARY FOR TUESDAY, AUGUST 6, 2013

TEMPERATURE (DEGREES F)
MAX…..78     NORMAL…..81
MIN…..56     NORMAL…..63
MEAN….67     NORMAL…..72

DEPARTURE FROM 30-YEAR NORMAL……………….-5
TOTAL DEPARTURE FOR THE MONTH………………-17 [-3.0 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY………….2    DEPARTURE………-5
TOTAL COOLING UNITS FOR THE MONTH…………25    DEPARTURE……..-18
TOTAL COOLING UNITS FOR THE SEASON……….508    DEPARTURE…….+114
TOTAL COOLING UNITS LAST SEASON TO DATE…..517    DIFFERENCE……..-9

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY…………….17 ESE AT  3:45 P.M.
AERO…………………15 S   AT 11:05 P.M.
ASOS…………………15 E   AT  3:45 P.M.
DAVIS………………..15 E   AT  3:44 P.M. RMY 16
FASTEST MILE FOR YESTERDAY………………12 ESE AT  3:45 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………12 SSW AT 11:39 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………..11 E   AT  3:47 P.M.
AVERAGE WIND SPEED AND DIRECTION…………5.8 NNW
ASOS…………………5.5
DAVIS………………..5.3 ENE [060 deg.] * last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00   DEPARTURE…………-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.24   DEPARTURE…………-0.66
ASOS…………..0.23
TOTAL PRECIPITATION FOR THE YEAR……….35.53   DEPARTURE…………+3.64
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/…/..          25 S   AERO 26 MPH S   RMY 27
8/2  81/62/72/0/0.23/…/..          26 W   AERO 26 MPH W   RMY 28
8/3  77/63/70/-2/T/…/..            22 WSW AERO 23 MPH WSW RMY 23
8/4  79/58/69/-3/T/…/..            25 WNW AERO 21 MPH WNW RMY 26
8/5  75/54/65/-7/0.00/…/..         26 WNW AERO 25 MPH WNW RMY 27
8/6  78/56/67/-5/0.00/…/..         17 ESE AERO 15 MPH S   RMY 16

8/7 morning low 59F, normal low: 63F

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 7
HIGH 95F IN 1924
LOW 51F IN 2004
PRECIP 3.32 INCHES IN 1926
PEAK GUST 51 MPH NE 1975

RECORDS FOR AUGUST 8
HIGH 93F IN 1909,1949
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958

TODAY’S REPORT PREPARED BY: Robert Skilling, Mark Medlinskas, Kevin Pecora

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Blue Hill Observatory & Science Center · Legal

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