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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, AUGUST 28, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME

TEMPS DROP INTO THE UPPER 50S OVERNIGHT, SEASONAL
CONDITIONS PREVAIL THURSDAY AND FRIDAY

Yesterday's maximum of 79F and minimum of 59F combined
to produce an almost perfectly seasonal day with dry
conditions and improving visibility. Temperatures dropped
overnight under clear conditions to a minimum of 58F, just
two degrees below the daily norm. 

Visibility has been excellent today, beginning with this 
morning's 7:00 AM EST observation which featured views
of 80s miles in all directions. By the 1:00 PM EST observation
scattered flattened cumulus and broken cirrostratus were
present, with a maximum temperature of 78F recorded.


Today's Observations:

7 A.M.
Weather: Clear, few cirrus fibratus in all directions
Temperature: 62F; Dew Point: 55F; Wind: NNW at 8 kts,
Sea-level pressure: 30.14 ins. Hg, rising, then more quickly
Visibility:  80 miles
6-hr Max temp: 62F
6-hr Min temp: 58F
24-hr precip: 0.00 ins
BHO SA 1155 CLR 80 208/62/55/3308/014/ FEW CI ALQDS/ 8/001 
53013 10062 20058

10 A.M.
Weather: Scattered cirrostratus, few cumulus in all directions
Temperature: 72F; Dew Point 55F; Wind: estimated NW at 2 kts,
Wind Speed: Light
Sea-level pressure: 30.17 ins. Hg, rising, then more slowly
Visibility: 75 miles
BHO SA 1455 260 SCT 75 216/72/55/E3202/017/ FEW CU ALQDS WND LGT/ 
8/108 51008
 
1 P.M.
Weather: Scattered cumulus, broken cirrostratus
Temperature: 76F; Dew Point: 54F; Wind: estimated NNW at 5 kts,
Wind Speed: Light 
Sea-level pressure: 30.14 ins. Hg, falling, then more slowly
Visibility: 75 miles 
6-hr Max temp: 78F  
6-hr Min temp: 62F
BHO SA 1755 50 SCT E250 BKN 75 208/76/54/E3305/014/ WND LGT/ 
8/108 56008 10078 20062


SUMMARY FOR THURSDAY, AUGUST 27, 2015 
  
TEMPERATURE (DEGREES F)
MAX.....79   NORMAL.....78 
MIN.....59   NORMAL.....60 
MEAN....69   NORMAL.....69 
 
DEPARTURE FROM 30-YEAR NORMAL........................+0
TOTAL DEPARTURE FOR THE MONTH.......................+79  [+2.7 DEGREES/DAY]
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............4    DEPARTURE.........+0
TOTAL COOLING UNITS FOR THE MONTH.............238   DEPARTURE.........+69
TOTAL COOLING UNITS FOR THE SEASON............632   DEPARTURE........+112
TOTAL COOLING UNITS LAST SEASON TO DATE.......465   DIFFERENCE.......+167
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................22  W    AT   3:44 P.M.        
                   ASOS........................22  W    AT   3:44 P.M.     
                   DAVIS.......................22  W    AT   3:21 P.M. RMY 23
FASTEST MILE FOR YESTERDAY.....................17  W    AT   4:19 P.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE..................17  W    AT   4:19 P.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE.................16  WNW  AT   3:28 P.M.     
AVERAGE WIND SPEED AND DIRECTION..............10.5 WNW 
                   ASOS.......................10.3
                   DAVIS......................9.0 NW [305 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.....-0.69
                          ASOS..............2.88
TOTAL PRECIPITATION FOR THE YEAR...........30.26  DEPARTURE.....-4.32
                        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 low since midnight is 58F; 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 28
HIGH 95F IN 1948
LOW 43F IN 1885
PRECIP 1.80 INCHES IN 1922
PEAK GUST 87 MPH SSE IN 1971 (DORIA)

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

TODAY'S REPORT PREPARED BY: Brian Fitzgerald