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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 24, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

MOSTLY SUNNY WITH A SEA BREEZE ON 
A COOL LATE SUMMER'S DAY....

Visibility was excellent today, with an average 
of 85 miles being seen. Conditions were cool and dry, 
due to a sea breeze out of the northeast. Sky conditions
also remained mostly clear. The high so far today is 72F, 
6 degrees below the daily normal maximum of 78F. The low 
since midnight is 55F, 6 degrees below the average daily 
minimum of 61F.  


Today's Observations:

7 A.M.
Weather: Clear, few cumulus
Temperature: 59F; Dew Point: 51F; Wind: NW at 7 kts
Sea-level pressure: 30.14 ins. Hg, rising, then more rapidly
Visibility: 85 miles
6-hr Max temp: 59F
6-hr Min temp: 55F
24-hr Precip: Trace
BHO SA 1155 CLR 85 208/59/51/3307/014/ FEW CS ALQDS/ 
8/008 53017 10059 20055

10 A.M.
Weather: Scattered cumulus
Temperature: 70F; Dew Point: 51F; Wind: NE at 8G14 kts
Sea-level pressure: 30.17 ins. Hg, rising steadily
Visibility: 85 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 50 SCT 85 216/70/51/0708G14/017/ 8/100 
53008

1 P.M.
Weather: Scattered cumulus
Temperature: 70F; Dew Point: 54F; Wind: NE at 11G19 kts
Sea-level pressure: 30.19 ins. Hg, rising steadily
Visibility: 85 miles
6-hr Max temp: 72F
6-hr Min temp: 59F
6-hr Precip: 0.00 ins.
BHO SA 1755 40 SCT 85 222/70/54/0711G19/019/ 8/100 
53006 10072 20059

SUMMARY FOR FRIDAY, AUGUST 23, 2019 

TEMPERATURE (DEGREES F)
MAX.....78   NORMAL.....78
MIN.....60   NORMAL.....61
MEAN....69   NORMAL.....70

DEPARTURE FROM 30-YEAR NORMAL......................-1
TOTAL DEPARTURE FOR THE MONTH.....................+44 [+1.7 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............4   DEPARTURE.........-1
TOTAL COOLING UNITS FOR THE MONTH.............186   DEPARTURE........+37
TOTAL COOLING UNITS FOR THE SEASON............597   DEPARTURE........+97
TOTAL COOLING UNITS LAST SEASON TO DATE.......673   DEPARTURE........-76

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................23 N   AT  9:07 P.M.
                   AERO.........................18 N   AT  7:42 P.M.
                   ASOS.........................24 N   AT  9:08 P.M.
                   DAVIS........................23 NNW AT  8:56 P.M. RMY 24
FASTEST MILE FOR YESTERDAY......................15 N   AT  8:39 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...................15 N   AT  9:08 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................15 N   AT  8:15 P.M.
AVERAGE WIND SPEED AND DIRECTION..............7.3 NW
                   ASOS.......................7.9
                   DAVIS......................7.9 NW [312 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...Trace  DEPARTURE......-0.13
                         ASOS..............0.01
TOTAL PRECIPITATION FOR THE MONTH..........1.02  DEPARTURE......-2.12
                         ASOS..............0.97
TOTAL PRECIPITATION FOR THE YEAR..........36.34  DEPARTURE......+2.21
                         ASOS.............36.25


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

8/01  84/66/75/+3/0.00/755/87               18 NNW AERO 20 NW  RMY 17
8/02  83/61/72/0/0.00/804/93                18 WSW AERO 18 WSW RMY 18 
8/03  84/66/75/+3/0.00/302/35               25 SW  AERO 26 SW  RMY 25
8/04  83/66/75/+3/0.00/732/85               21 NE  AERO 23 SW  RMY 25
8/05  81/58/70/-2/0.00/842/98               20 S   AERO 18 S   RMY 19
8/06  79/63/71/-1/0.00/282/33               15 S   AERO 14 S   RMY 17
8/07  82/66/74/+2/..../367/43               32 SSW AERO 35 SSW RMY 35
8/08  84/67/76/+4/..../588/69               30 SW  AERO 24 WNW RMY 29
8/09  82/63/73/+1/..../815/96               28 NW  AERO 25 NW  RMY 26
8/10  78/59/69/-2/..../669/79               32 NW  AERO 28 NW  RMY 28
8/11  78/55/67/-4/0.00/.../..               28 W   AERO 25 W   RMY 28
8/12  82/60/71/0/0.00/.../..                25 W   AERO 23 W   RMY 26
8/13  77/66/72/+1/0.02/.../..               25 W   AERO 24 WSW RMY 24
8/14  75/62/69/-2/..../.../..               24 ENE AERO 22 ENE RMY 22
8/15  77/59/68/-3/..../.../..               17 ESE AERO 15 SSE RMY 16
8/16  78/61/70/-1/..../../..                20 E   AERO 17 ESE RMY 18
8/17  78/67/73/+2/..../../..                14 SE  AERO 15 SE  RMY 15
8/18  88/70/79/+8/..../.../..               18 SSW AERO 18 SSW RMY 21
8/19  92/69/81/+11/..../.../..              25 WSW AERO 23 WSW RMY 25
8/20  87/66/77/+7/..../.../..               18 W   AERO 14 WSW RMY N/A
8/21  85/68/77/+7/0.12/.../..               33 SW  AERO 32 SW  RMY 33
8/22  88/68/78/+8/0.00/.../..               25 W   AERO 21 W   RMY 26
8/23  78/60/69/-1/0.04/.../..               23 N   AERO 18 N   RMY 24

8/24 Low temp since midnight is 55F; normal low is 61F


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: Benjamin Turner