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Sunday, August 16, 2015

August 16, 2015

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 16, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

HOT AND HAZY WITH MODERATE HUMIDITY TODAY…
FEW CUMULUS THIS AFTERNOON…

Despite the severe storms that came through yesterday
evening, the overnight low of 65 was the second warmest
low we’ve seen in weeks as the heat and humidity continues
today.  Skies have been clear for most of the day but
cumulus clouds are beginning to pop up all around the station.

Today’s Observations:

7 A.M.
Weather: Clear, few altocumulus distant W, Hazy
Temperature: 67F; Dew Point: 66F; Wind: WNW at 5 kts
Sea-level pressure: 30.12 ins. Hg, rising
Visibility: 25 miles, hazy
Wind: Light
6-hr Max temp: 67F
6-hr Min temp: 65F
24-hr precip: 1.24 inches
BHO SA 1155 CLR 25 201/67/66/2905/012/ FEW AS W DSNT HAZY WND LGT
8/000 50004 70124 10067 20065

10 A.M.
Weather: Clear, few cumulus distant NNE-NE, light haze
Temperature: 78F; Dew Point 67F; Wind: W at 7 kts,
Sea-level pressure: 30.12 ins. Hg, steady
Visibility: 35 miles, hazy
BHO SA 1455 CLR 35 201/78/67/2607/012/ FEW CU NNE-NE DSNT LGT DSNT HZ
8/000 53000

1 P.M.
Weather: Clear, few cumulus all quadrants, light haze
Temperature: 86F; Dew Point: 67F; Wind: WNW at 7 kts,
Sea-level pressure: 30.11 ins. Hg, falling
Visibility: 50 miles, light haze
6-hr Max temp: 86F
6-hr Min temp: 67F
BHO SA 1755 CLR 50 199/86/67/3007/011/ FEW CU ALQDS LGT DSNT HZ
8/100 58002 10086 20067
SUMMARY FOR SATURDAY, AUGUST 15, 2015

TEMPERATURE (DEGREES F)
MAX…..91   NORMAL…..80
MIN…..66   NORMAL…..62
MEAN….79   NORMAL…..71

DEPARTURE FROM 30-YEAR NORMAL……………………+8
TOTAL DEPARTURE FOR THE MONTH…………………..+20  [+1.1 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..14   DEPARTURE……….+8
TOTAL COOLING UNITS FOR THE MONTH………….119   DEPARTURE………+16
TOTAL COOLING UNITS FOR THE SEASON…………513   DEPARTURE………+59
TOTAL COOLING UNITS LAST SEASON TO DATE…….416   DIFFERENCE……..+97

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….38 W   AT  10:21 P.M.
ASOS……………………40 W   AT  10:21 P.M.
DAVIS…………………..41 W   AT  10:21 P.M. RMY 41
FASTEST MILE FOR YESTERDAY…………………28 W   AT  10:21 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………28 W   AT  10:21 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..28 W   AT  10:20 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.2 WSW
ASOS…………………..9.2
DAVIS………………….8.5 WSW [251 deg.] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…..1.24  DEPARTURE…..+1.11
ASOS……………1.25
TOTAL PRECIPITATION FOR THE MONTH………..2.13  DEPARTURE…..-1.08
ASOS…………..2.16
TOTAL PRECIPITATION FOR THE YEAR………..29.49  DEPARTURE…..-3.60
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 low since midnight is 65F; normal low is now 62F

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 16
HIGH 95F IN 1944
LOW 50F IN 1927
PRECIP 1.47 INCHES IN 1926
PEAK GUST 45e MPH N IN 1951

RECORDS FOR AUGUST 17
HIGH 97F IN 1944
LOW 48F IN 1902
PRECIP 2.17 INCHES IN 1998
PEAK GUST 50e MPH SSW IN 1952, 50 MPH WNW IN 1962

TODAY’S REPORT PREPARED BY: Robert Millette

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