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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JUNE 28, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME

HIGH HUMIDITY AND BRIEF MORNING RAIN SHOWERS AS COLD FRONT PASSES

Skies were mostly cloudy today with stratocumulus and altostratus
dominating the sky.  Visibility ranged from 10-30 miles at the 
7:00AM EST observation and improved to 40 miles by 1:00PM EST.

Only a trace of precipitation was measured in time for the 7:00AM EST
observation.  An additional 0.07 in. fell in the following hour.

While temperatures remained lower than the previous days, high dew points
and humidities made it uncomfortable to be outside.  The overnight low
temp. was 66F, and the max. temp. climbed to 77F by 1:00PM EST.  Dew
points remained in the mid-60s with humidities ranging from 60-90%.


Today's Observations:

7 A.M. 
Weather: Light rain, few cumulus fractus in all directions,
overcast nimbostratus
Temperature: 68F; Dew Point: 64F; Wind: S at 10 kts
Sea-level pressure: 30.01 in. Hg, rising, then more quickly
Visibility: 10 miles, except 30 miles NE-SSE and 20 miles SSE-SSW, 
distant fog 
6-hr Max temp: 68F 
6-hr Min temp: 66F
24-hr precip: Trace
BHO SA 1155 E64 OVC 20R- 164/68/64/1810/001/ FEW CUFRA ALQDS 
VSBY NE-SSE 30 VSBY SSE-SSW 20 DSNT FG/ 8/72/ 53006 10068 20066

10 A.M.
Weather: Broken stratocumulus, broken altostratus, broken cirrus
Temperature: 74F; Dew Point: 65F; Wind: S at 9 kts
Sea-level pressure: 30.00 in. Hg, falling, then more quickly
Visibility:  20 miles, distant fog
BHO SA 1455 E32 BKN 64 BKN 180 BKN 20 160/74/65/1909/000/ DSNT FG/ 
8/411 58004 ASOS 60007 MANUAL 60007
 
1 P.M.
Weather: Broken altocumulus, overcast altostratus
Temperature: 76F; Dew Point: 64F; Wind: S at 12G19 kts
Sea-level pressure: 29.98 in. Hg, steady, then falling 
Visibility: 40 miles
6-hr Max temp: 77F 
6-hr Min temp: 67F
BHO SA 1755 E64 BKN 200 OVC 40 151/76/64/1812G19/998/ 8/41/ 58009 
ASOS 60007 MANUAL 60007 10077 20067
 
SUMMARY FOR MONDAY, JUNE 27, 2016 
 
TEMPERATURE (DEGREES F)
MAX.....84   NORMAL.....78
MIN.....60   NORMAL.....60 
MEAN....72   NORMAL.....69

DEPARTURE FROM 30-YEAR NORMAL.........................+3
TOTAL DEPARTURE FOR THE MONTH........................+28 [+0.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-1
TOTAL HEATING UNITS FOR THE MONTH..............34   DEPARTURE.........-37
TOTAL HEATING UNITS FOR THE SEASON...........5282   DEPARTURE.......-1092
TOTAL HEATING UNITS LAST SEASON TO DATE......6491   DIFFERENCE......-1209

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............7   DEPARTURE..........+2
TOTAL COOLING UNITS FOR THE MONTH..............81   DEPARTURE..........-7
TOTAL COOLING UNITS FOR THE SEASON............129   DEPARTURE.........+17
TOTAL COOLING UNITS LAST SEASON TO DATE.......132   DIFFERENCE.........-3   

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................32 S   AT  4:52 P.M.  
                   ASOS........................35 SSW AT  4:52 P.M.     
                   DAVIS.......................33 S   AT  4:21 P.M. RMY 34
FASTEST MILE FOR YESTERDAY.....................25 S   AT  4:22 P.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE..................25 S   AT  4:53 P.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE.................24 S   AT  4:53 P.M.     
AVERAGE WIND SPEED AND DIRECTION...............15.6 S
                   ASOS........................16.0
                   DAVIS.......................14.3 S [190 Deg.]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...Trace  DEPARTURE......-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.46  DEPARTURE......-2.52
                           ASOS............1.51
TOTAL PRECIPITATION FOR THE YEAR..........21.53  DEPARTURE......-5.11
                         ASOS.............21.95
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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

6/1  71/54/63/+1/0.00/860/95                 26 NE  AERO 30 NE  RMY N/A
6/2  68/54/61/-1/0.00/444/49                 21 NE  AERO 22 NE  RMY 21
6/3  70/57/64/+2/T/173/19                    16 SSW AERO 17 SSW RMY 16
6/4  81/61/71/+8/0.00/491/54                 18 S   AERO 21 S   RMY 20
6/5  67/60/64/+1/0.76/000/00                 32 SSE AERO 36 SSE RMY 34  
6/6  80/63/72/+9/0.00/747/82                 26 W   AERO 28 W   RMY 27 
6/7  83/58/71/+7/0.18/602/66                 32 WNW AERO 36 WNW RMY 33 TSTM 
6/8  72/52/62/-2/0.05/684/75                 37 WNW AERO 41 WNW RMY 38 TSTM
6/9  67/48/58/-6/0.00/466/51                 41 WNW AERO 45 WNW RMY 40
6/10 71/50/61/-4/0.00/823/90                 25 W   AERO 28 W   RMY 26
6/11 68/52/60/-5/0.06/155/17                 30 SSW AERO 35 SSW RMY 31
6/12 76/51/64/-1/T/558/61                    41 W   AERO 48 W   RMY 42
6/13 70/49/60/-5/0.00/641/70                 36 NW  AERO 46 NW  RMY 38
6/14 77/50/64/-2/0.00/889/97                 32 NNW AERO 38 NNW RMY 33
6/15 83/60/72/+6/0.00/852/93                 22 NW  AERO 26 NW  RMY 25
6/16 82/62/72/+6/0.00/660/72                 26 E   AERO 28 E   RMY 27
6/17 77/59/68/+1/T/834/91                    25 E   AERO 28 E   RMY 23 TSTM
6/18 75/55/65/-2/0.00/899/98                 22 SSW AERO 24 SSE RMY N/A
6/19 79/55/67/+0/0.00/807/88                 32 S   AERO 35 S   RMY 36
6/20 81/57/69/+1/0.00/871/95                 25 S   AERO 28 S   RMY 27
6/21 82/61/72/+1/0.40/596/65                 30 WSW AERO 31 W*  RMY 33 
6/22 79/59/69/+1/0.01/495/54                 31 NW  AERO 35 NW  RMY 31
6/23 84/56/70/+2/0.00/642/70                 17 S   AERO 18 S   RMY 18
6/24 77/58/68/-1/0.00/889/97                 20 NE  AERO 21 NE  RMY 20
6/25 80/60/70/+1/0.00/.../..                 16 ENE AERO 17 ENE RMY 16
6/26 86/59/73/+4/0.00/.../..                 25 S   AERO 26 S   RMY 26
6/27 84/60/72/+3/T/.../..                    32 S   AERO 35 S*  RMY 34

6/28 low temp since midnight is 66F; normal low now 61F

DAILY RECORDS FOR JUNE 2016
None so far
     
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated): 

RECORDS FOR JUNE 28
HIGH 95F IN 1991
LOW 47F IN 1970
PRECIP 2.09 INS IN 1938
PEAK GUST 52 MPH WSW IN 1993

RECORDS FOR JUNE 29
HIGH 93F IN 1933
LOW 42F IN 1919
PRECIP 1.60 INS IN 1889
PEAK GUST 49 MPH S IN 1957

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle