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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 9, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME

ANOTHER PLEASANT DAY WITH MOSTLY SUNNY SKIES AND LOW HUMIDITY

High pressure remained over the area today continuing the very pleasant weather. 
Visibility decreased to 70 miles in the presence of distant haze. Temperatures 
were slightly warmer than yesterday and reached 89F by the 1:00PM observation. 
Dew points were again in the low 50s with relative humidity dropping to 27% by 
1:00PM.

Today's Observations:

7 A.M. 
Weather: Few cirrus W-N
Temperature: 71F; Dew Point: 55F; Wind: N at 8 kts
Sea-level pressure: 30.22 ins. Hg, rising, then more quickly 
Visibility: 70 miles 
6-hr Max temp: 71F 
6-hr Min temp: 65F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 70 233/71/55/3608/022/ FEW CI W-N/ 8/001 53023 
10071 20065

10 A.M.
Weather: Few cumulus SSW-SW, few cirrus in all directions
Temperature: 79F; Dew Point: 53F; Wind: ENE at 6 kts,
Wind Speed: Light
Sea-level pressure: 30.24 ins. Hg, rising then more slowly 
Visibility: 70 miles  
BHO SA 1455 CLR 70 240/79/53/0606/024/ FEW CU SSW-SW FEW CI ALQDS 
WND LGT/ 8/101 51007

1 P.M.
Weather: Scattered cirrus, few cumulus E-NNW
Temperature: 89F; Dew Point: 51F; Wind: WSW at 4 kts
Sea-level pressure: 30.21 ins. Hg, falling, then more quickly
Visibility: 70 miles   
6-hr Max temp: 89F 
6-hr Min temp: 71F
BHO SA 1755 250 SCT 70 231/89/51/2404/021/ FEW CU E-NNW WND L/V/ 
8/101 56009 10089 20071

SUMMARY FOR MONDAY, AUGUST 8, 2016 
 
TEMPERATURE (DEGREES F)
MAX.....87   NORMAL.....80
MIN.....65   NORMAL.....63 
MEAN....75   NORMAL.....72

DEPARTURE FROM 30-YEAR NORMAL.........................+3
TOTAL DEPARTURE FOR THE MONTH........................+10 [+1.1 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............10   DEPARTURE..........+3
TOTAL COOLING UNITS FOR THE MONTH..............66   DEPARTURE..........+9
TOTAL COOLING UNITS FOR THE SEASON............540   DEPARTURE........+132
TOTAL COOLING UNITS LAST SEASON TO DATE.......464   DIFFERENCE........+76   

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................23 W   AT  3:53 P.M.  
                   AEROVANE....................21 W   AT  3:54 P.M.     
                   ASOS........................23 W   AT  3:55 P.M.  
                   DAVIS.......................20 W   AT  2:14 P.M. RMY 22
FASTEST MILE FOR YESTERDAY.....................16 W   AT  2:15 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE..................18 W   AT  3:56 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE.................17 W   AT  3:55 P.M.  
AVERAGE WIND SPEED AND DIRECTION..............8.4 W  
                   ASOS.......................8.9    
                   DAVIS......................7.2 WNW [300 Deg.]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.......-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.14  DEPARTURE......-1.04
                         ASOS..............0.12
TOTAL PRECIPITATION FOR THE YEAR..........23.33  DEPARTURE......-8.84
                         ASOS.............23.63

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

8/1  75/65/70/-2/0.02/.../..                 21 NE  AERO 20 ENE RMY 20
8/2  71/63/67/-5/0.12/.../..                 16 ENE AERO 16 ENE RMY 16
8/3  81/60/71/-1/0.00/.../..                 18 S   AERO 16 S   RMY 17
8/4  86/61/74/+2/0.00/.../..                 23 S   AERO 22 S   RMY 17 
8/5  87/61/74/+2/0.00/.../..                 29 S   AERO 29 S   RMY 30 
8/6  88/67/78/+6/T/.../..                    24 SSW AERO 23 SSW RMY 23   
8/7  89/65/77/+5/0.00/.../..                 26 WNW AERO 25 WNW RMY 26
8/8  87/63/75/+3/0.00/.../..                 23 W   AERO 21 W   RMY 22

8/9  Low temp since midnight is 65F; normal low is now 63F
    
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated): 

RECORDS FOR AUGUST 9
HIGH 100F IN 1949
LOW 49F IN 1899
PRE 2.65 INS IN 1976
PEAK GUST 90 MPH SW IN 1968

RECORDS FOR AUGUST 10
HIGH 101F IN 1949 [STATION RECORD MAXIMUM - Tied with 8/2/1975]
LOW 49F IN 1964
PRE 2.27 INS IN 1952
PEAK GUST 88e MPH S IN 1976

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle and Lizzy Suzedell