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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 8, 2017  
ALL TIMES ARE IN EASTERN STANDARD TIME

HIGH PRESSURE BRINGS WARMER TEMPS,
HIGH CLOUDS MOVE IN AHEAD OF LOW PRESSURE

High pressure over the region has given us a dry and warm
day.  Temperatures had reached 76F by 1:00PM EST from a 
minimum earlier this morning of 52F.  Winds have again
been quite light and switched out of the south by afternoon.
Despite the mild conditions, light haze limited visibility
to 60 miles in the late morning and afternoon.

Skies were clear at the 7:00AM observation, but cirrostratus
clouds preceding the coastal low moved in and caused skies
to be nearly overcast in the late morning.  Skies cleared
slightly in the afternoon with scattered cirrus and few
altocumulus.


Today's Observations:

7 A.M.
Weather: Few cirrus in all directions
Temperature: 62F; Dew Point: 44F; Wind: SSW at 4 kts,
Wind speed: Light
Sea-level pressure: 30.06 ins. Hg, rising unsteadily
Visibility: 70 miles, thin smoke layer along horizon
6-hr Max temp: 62F
6-hr Min temp: 52F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 70 179/62/44/2004/006/ FEW CI ALQDS
THN K LYR ALG HRZN WND LGT/ 8/001 52011 10062 20052

10 A.M.
Weather: Few cumulus WNW-NW, broken cirrostratus
Temperature: 70F; Dew Point: 47F; Wind: ESE at 4 kts,
Wind speed: Light
Sea-level pressure: 30.05 ins. Hg, rising then falling
Visibility: 60 miles, light distant haze in all directions
BHO SA 1455 E250 BKN 60 177/70/47/1104/005/ FEW CU WNW-NW
LGT DSNT HZ ALQDS WND LGT/ 8/105 58002

1 P.M. 
Weather: Few altocumulus E-W, scattered cirrus
Temperature: 74F; Dew Point: 44F; Wind: S at 7 kts
Sea-level pressure: 30.01 ins. Hg, falling unsteadily
Visibility: 60 miles, light distant haze in all directions
6-hr Max temp: 76F
6-hr Min temp: 62F
BHO SA 1755 250 SCT 60 163/74/44/1707/001/ FEW AC E-W
LGT DSNT HZ ALQDS/ 8/031 57014 10076 20062


SUMMARY FOR WEDNESDAY, JUNE 7, 2017
 
TEMPERATURE (DEGREES F)
MAX.....65   NORMAL.....73
MIN.....47   NORMAL.....55
MEAN....56   NORMAL.....64

DEPARTURE FROM 30-YEAR NORMAL.........................-8
TOTAL DEPARTURE FOR THE MONTH........................-40 [-5.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............9   DEPARTURE..........+5
TOTAL HEATING UNITS FOR THE MONTH..............58   DEPARTURE.........+28
TOTAL HEATING UNITS FOR THE SEASON...........5720   DEPARTURE........-613
TOTAL HEATING UNITS LAST SEASON TO DATE......5256   DIFFERENCE.......+464

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE..........-2
TOTAL COOLING UNITS FOR THE MONTH...............2   DEPARTURE.........-12
TOTAL COOLING UNITS FOR THE SEASON.............58   DEPARTURE.........+20
TOTAL COOLING UNITS LAST SEASON TO DATE........67   DEPARTURE..........-9

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................21 NNE AT 11:02 A.M.
                   AERO........................18 NE  AT 11:18 A.M.*
                   ASOS........................21 NNE AT 11:18 A.M.
                   DAVIS.......................18 NE  AT 12:33 P.M. RMY 20
FASTEST MILE FOR YESTERDAY.....................13 NE  AT 11:03 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................16 NE  AT 11:18 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................14 NE  AT 11:18 A.M.
AVERAGE WIND SPEED AND DIRECTION..............7.4 N
                   ASOS.......................8.0
                   DAVIS......................6.0 NNE [030 deg.]
*last of multiple occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.16
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........2.96  DEPARTURE......+1.80
                         ASOS..............3.06
TOTAL PRECIPITATION FOR THE YEAR..........28.30  DEPARTURE......+4.48
                         ASOS...............N/A ***
*** ASOS annual total not available due to erroneous readings


PRELIMINARY CLIMATE SUMMARY FOR MAY 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

6/1  78/55/67/+5/0.06/.../..               39 NW  AERO 39 NW  RMY 41
6/2  70/50/60/-2/T/.../..                  32 WNW AERO 35 WNW RMY 34
6/3  66/47/57/-5/0.01/.../..               23 NW  AERO 25 NW  RMY 24
6/4  71/49/60/-3/0.28/.../..               21 SSE*AERO 21 SW  RMY N/A
6/5  55/49/52/-11/1.20/000/00              32 NE  AERO 35 NE  RMY N/A
6/6  49/45/47/-16/..../000/00              40 ENE AERO 43 ENE RMY 43
6/7  65/47/56/-8/..../.../..               21 NNE AERO 18 NE* RMY 20

6/8 Low temp since midnight is 52F; normal low is now 55F


DAILY RECORDS FOR JUNE

None so far.


DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):      

RECORDS FOR JUNE 8
HIGH 94F IN 1984
LOW 37F IN 1932
PRECIP 1.53 INS IN 1947
PEAK GUST 86e MPH WNW IN 1946 [Record for month]

RECORDS FOR JUNE 9
HIGH 94F IN 2008
LOW 40F IN 1980
PRECIP 2.08 INCHES IN 1931
PEAK GUST 67 MPH NW IN 1973

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle