Saturday, August 29, 2015

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 29, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

A THIRD CONSECUTIVE BEAUTIFUL DRY WEATHER LATE AUGUST DAY
TEMPERATURES AVERAGED RIGHT ON NORMAL PAST TWO DAYS
LONG SPELL OF VERY WARM TO HOT HUMID WEATHER ENDED 26TH

Today was a third consecutive day with temperatures running
very close to normal for late August. This came after the
days August 12-26 were all above normal except for two.

Along with the warm to hot spell was an extended period of
very humid weather when dew points ran up into the 70’s
These past several days have had very comfortable much lower
humidity with dew points down in the 50’s.  High and low
temperatures have been in a very close to normal range going
from around 60 degrees to around 80 degrees.

Today’s Observations:

7 A.M.
Weather: Thin scattered cirrus, 2 levels
Temperature: 65F; Dew Point: 53F; Wind: W at 7 kts,
Sea-level pressure: 30.21 ins. Hg, rising, then more quickly
Visibility:  60 miles, light distant haze
6-hr Max temp: 65F
6-hr Min temp: 60F
24-hr precip: 0.00 ins
BHO SA 1155 300 -SCT 60 230/65/53/2807/021/ FEW THN LWR CI 250
LGT DSNT HZ/ 8/001 53011 10065 20060

10 A.M.
Weather: Scattered cumulus, thin broken cirrus, few lower cirrus
Temperature: 74F; Dew Point 54F; Wind: WSW at 10 kts,
Sea-level pressure: 30.22 ins. Hg, rising,then falling slightly
and slightly higher than 3 hours ago
Visibility: 70 miles, light distant haze
BHO SA 1455 50 SCT 250 SCT 300 -BKN 70 232/74/54/2510/022/
LGT DSNT HZ/ 8/101 50002

1 P.M.
Weather: Scattered cumulus and stratocumulus generated by the
cumulus, scattered dense cirrus, overcast cirrus/cirrostratus
Temperature: 78F; Dew Point: 55F; Wind: SW at 09G17 kts
Wind: Direction variable SSW-W
Sea-level pressure: 30.17 ins. Hg, falling, then more slowly
Visibility: 70 miles, light distant haze
6-hr Max temp: 80F
6-hr Min temp: 65F
BHO SA 1755 55 SCT E220 BKN 250 OVC 70 216/78/55/2309G17/017/
THN SPTS IOVC WND 20V27 INCRSNG LGT DSNT HZ/ 8/102 56016
10080 20065

SUMMARY FOR FRIDAY, AUGUST 28, 2015

TEMPERATURE (DEGREES F)
MAX…..80   NORMAL…..77
MIN…..58   NORMAL…..60
MEAN….69   NORMAL…..69

DEPARTURE FROM 30-YEAR NORMAL……………………+0
TOTAL DEPARTURE FOR THE MONTH…………………..+79  [+2.6 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………4    DEPARTURE………-1
TOTAL COOLING UNITS FOR THE MONTH………….242   DEPARTURE………+69
TOTAL COOLING UNITS FOR THE SEASON…………636   DEPARTURE……..+112
TOTAL COOLING UNITS LAST SEASON TO DATE…….470   DIFFERENCE…….+166

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….15  NW   AT   3:16 A.M. *
ASOS……………………16  NW   AT   3:16 A.M.
DAVIS…………………..14  NNW  AT   3-4  A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………12  NW   AT   3:16 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………13  NW   AT   3:48 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..11  NNW  AT   2:53 A.M.
AVERAGE WIND SPEED AND DIRECTION……………6.5 NW
ASOS……………………6.9
DAVIS…………………. 6.0 NW [320 deg.] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..0.00  DEPARTURE…..-0.11
ASOS……………0.00
TOTAL PRECIPITATION FOR THE MONTH………..2.90  DEPARTURE…..-0.80
ASOS…………..2.88
TOTAL PRECIPITATION FOR THE YEAR………..30.26  DEPARTURE…..-4.43
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 84/58/71/0/0.00/830/98                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/…./534/64               38 W   RMY 41  TSTM
8/16 87/65/76/+5/…./774/93               16 W   RMY N/A
8/17 90/70/80/+9/0.00/805/97               17 W   RMY 18
8/18 92/70/91/+10/0.27/546/66              31 W   RMY 32  TSTM
8/19 87/69/78/+8/0.00/775/94               23 S   RMY 24
8/20 85/70/78/+8/0.00/723/88               22 ESE RMY 22
8/21 82/69/76/+6/0.31/98/12                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 78/67/73/+3/…./…/..               18 SSW RMY 19
8/25 85/68/77/+8/…./…/..               22 S   RMY 22
8/26 82/64/73/+4/…./…/..               21 NW  RMY 22
8/27 79/59/69/+0/0.00/…/..               22 W   RMY 23
8/28 80/58/69/+0/0.00/…/..               15 NW  RMY 15

8/29 low since midnight is 60F; normal low is now 60F

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 29
HIGH 95F IN 1953
LOW 41F IN 1982
PRECIP 2.88 INCHES IN 1962
PEAK GUST 70e MPH S IN 1949

RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW IN 1965

TODAY’S REPORT PREPARED BY: Robert Skilling