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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 30, 2017  
ALL TIMES ARE IN EASTERN STANDARD TIME

MORNING STORM BRINGS LIGHT RAIN

Light rain began falling shortly before midnight and
continued until 10:00AM EST.  Precipitation totaled
0.16 inches at 7:00AM, which is 0.05 inches above the
daily normal.  A trace was measured at 10:00AM.  This
brings the monthly departure to 2.21 inches below normal
and the annual departure to 1.56 inches above normal.

Overcast skies began to clear as the storm moved off-
shore, and returning high pressure brought mostly sunny
skies for the afternoon.  Temperatures rose to 70F by
1:00PM and should rise a few more degrees due to the light
cloud cover.  Visibility reached 60 miles at the 1:00PM ob.


Today's Observations:

7 A.M.
Weather: Few stratus fractus in all directions, scattered 
stratocumulus, overcast altostratus, patches of fog drifting 
below summit
Temperature: 58F; Dew Point: 57F; Wind: N at 10G18 kts
Sea-level pressure: 29.96 ins. Hg, rising, then more slowly
Visibility: 10 miles, distant fog in all directions
6-hr Max temp: 59F
6-hr Min temp: 57F
24-hr Precip: 0.16 in.
BHO SA 1155 28 SCT E74 BKN 10 146/58/57/3610G18/996/ FEW STFRA 
ALQDS PTCHS FG DRFTG BLO SMT DSNT FG ALQDS/ 8/71/ 51005 MANUAL 
70016 ASOS 70015 10059 20057

10 A.M.
Weather: Broken cumulus and cumulus fractus, broken altostratus
Temperature: 60F; Dew Point: 58F; Wind: NNE at 10G15 kts
Sea-level pressure: 29.95 ins. Hg, falling then rising
Visibility: 40 miles, distant fog in all directions
3-hr Precip: Trace
BHO SA 1455 E8 BKN 110 BKN 40 141/60/58/0310G15/995/ DSNT FG 
ALQDS/ 8/710 56005 MANUAL 600//

1 P.M. 
Weather: Scattered cumulus, scattered altostratus
Temperature: 69F; Dew Point: 52F; Wind: NE at 7 kts
Sea-level pressure: 29.93 ins. Hg, falling, then more quickly
Visibility: 60 miles
6-hr Max temp: 70F 
6-hr Min temp: 58F
6-hr Precip: Trace
BHO SA 1755 21 SCT 100 SCT 60 134/69/52/0507/993/ 8/110 58007
MANUAL 600// 10070 20058


SUMMARY FOR TUESDAY, AUGUST 29, 2017
 
TEMPERATURE (DEGREES F)
MAX.....68   NORMAL.....77
MIN.....57   NORMAL.....60
MEAN....63   NORMAL.....69

DEPARTURE FROM 30-YEAR NORMAL.........................-6
TOTAL DEPARTURE FOR THE MONTH........................+15 [+0.3 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE..........-4
TOTAL COOLING UNITS FOR THE MONTH.............184   DEPARTURE..........+6
TOTAL COOLING UNITS FOR THE SEASON............605   DEPARTURE.........+76
TOTAL COOLING UNITS LAST SEASON TO DATE.......778   DEPARTURE........-173

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................18 ENE AT 12:01 P.M.
                   AERO........................16 ENE AT 11:59 A.M.
                   ASOS........................19 ENE AT 12:00 P.M.
                   DAVIS.......................20 ENE AT  9:11 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................13 NE  AT 10:51 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................14 ENE AT 10:54 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................12 NE  AT 10:51 A.M.
AVERAGE WIND SPEED AND DIRECTION..............8.5 ENE
                   ASOS.......................9.0
                   DAVIS......................6.7 ENE [068 DEG.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.16  DEPARTURE......+0.05
                         ASOS..............0.15
TOTAL PRECIPITATION FOR THE MONTH..........1.60  DEPARTURE......-2.21
                         ASOS..............1.58
TOTAL PRECIPITATION FOR THE YEAR..........36.36  DEPARTURE......+1.56
                         ASOS...............N/A ***
*** ASOS annual total not available due to erroneous readings


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

8/1  87/65/76/+4/0.00/762/88               16 ESE*AERO 16 NNW RMY 16
8/2  86/65/76/+4/1.09/372/43               32 W   AERO 36 W   RMY 34 TSTM
8/3  83/65/74/+2/0.00/552/64               22 S   AERO 23 S   RMY 24
8/4  84/66/75/+3/0.00/697/81               26 S   AERO 30 S   RMY 29
8/5  75/63/69/-3/0.10/060/07               23 NW  AERO 28 NW  RMY 29
8/6  76/57/67/-5/0.00/795/93               30 NW  AERO 32 NW  RMY 31
8/7  76/60/68/-4/0.01/597/70               28 SSW AERO 28 SSW RMY 29
8/8  74/60/67/-5/0.02/000/00               17 S   AERO 16 SSE RMY 16
8/9  83/58/71/-1/0.00/831/98               18 S   AERO 18 S   RMY 19 
8/10 86/63/75/+4/T/643/76                  20 S   AERO 18 S   RMY 20
8/11 82/63/73/+2/0.00/666/79               17 S   AERO 16 S   RMY 17
8/12 75/57/66/-5/0.17/294/35               22 SSW*AERO 22 SSW RMY 23
8/13 84/67/76/+5/0.00/796/95               26 WNW AERO 24 WNW RMY 26
8/14 82/67/75/+4/0.00/359/43               14 SSW*AERO 14 S   RMY 15
8/15 79/64/72/+1/T/058/07                  21 S   AERO 21 S   RMY 23
8/16 83/64/74/+3/0.00/698/84               23 NW* AERO 23 NW  RMY 25
8/17 81/58/70/-1/0.00/.../..               15 SSW AERO 14 SSW RMY N/A 
8/18 79/63/71/0/0.01/.../..                33 S   AERO 35 S   RMY 35
8/19 89/65/77/+7/0.00/.../..               23 WSW AERO 23 WSW RMY 25 
8/20 84/66/75/+5/0.00/.../..               23 NW  AERO 25 NW  RMY 27
8/21 85/63/74/+5/0.00/.../..               18 SW  AERO 20 SW  RMY 20
8/22 88/68/78/+8/0.00/.../..               31 S   AERO 35 S   RMY 34  
8/23 83/64/74/+4/0.04/.../..               24 WNW*AERO 25 WNW RMY 27
8/24 80/59/70/0/0.00/.../..                18 WNW*AERO 17 WNW RMY 21
8/25 75/57/66/-3/T/.../..                  21 NW  AERO 21 NW  RMY 23
8/26 75/55/65/-4/0.00/.../..               16 WNW AERO 16 SSE RMY 17
8/27 75/55/65/-4/0.00/.../..               17 ENE*AERO 16 ENE*RMY 18
8/28 74/56/65/-4/0.00/.../..               17 ENE AERO 16 ENE*RMY 18
8/29 68/57/63/-6/..../.../..               18 ENE AERO 16 ENE RMY N/A

8/30 Low temp since midnight is 57F; normal low is now 60F


DAILY RECORDS FOR AUGUST

None so far.


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

RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW IN 1965

RECORDS FOR AUGUST 31
HIGH 94F IN 1953
LOW 42F IN 1976
PRECIP 2.46 INCHES IN 1954
PEAK GUST 125 MPH SE IN 1954 [CAROL - RECORD FOR MONTH]

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle