BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 1, 2017 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
2017 BEGAN WITH RAIN FOR THE MORNING
CONDITIONS HAVE CLEARED WITH MOSTLY SUNNY SKIES
 
Happy New Year to all readers of the discussion from the Observers 
and staff of the Blue Hill Observatory. 
We welcome you to another year of observations and look forward to
providing another year of climate summaries from Great Blue Hill. 
 
Sky conditions changed quickly at the Observatory this morning, as
mostly cloudy skies quickly cleared right before the 7 AM observation.
The humidity began to drop throughout the morning as drier conditions
prevailed.  High clouds have drifted in from the west but additional
precipitation is not expected. Very windy conditions yesterday have given
way to far calmer winds today. 
 
 
7 A.M.
Weather: Clear, stratocumulus distant NE-SSW AND W-NW
Temperature: 34F; Dew Point: 34F; Wind: SSW at 11 kts
Sea-level pressure: 29.93 ins. Hg, rising, then more quickly
Visibility: 30 miles
6-hr Max temp: 36F
6-hr Min temp: 34F
24-hr precip: 0.15
BHO SA 1155 CLR 30 135/34/34/2111/993/ SC DSNT NE-SSW AND W-NW/
8/500 53022 MANUAL 70015 ASOS 70016 10036 20034
 
10 A.M.
Weather: Scattered cirrocumulus, Few cumulus WNW-NNE
Temperature: 38F; Dew Point: 28F; Wind: W at 11 kts, gust to 21
Sea-level pressure: 30.05 ins. Hg, rising then faster
Visibility: 60 miles
BHO SA 1455 E250 SCT 60 176/38/28/2811G21/005/ FEW CU WNW-NNE/
8/109 53041
 
1 P.M.
Weather: Clear, few cumulus all quadrants, few cirrus NW-N
Temperature: 41F; Dew Point: 26F; Wind: WNW at 20 kts, gusts to 30
Sea-level pressure: 30.09 ins. Hg, increasing then steady
Visibility: 75 miles
6-hr Max temp: 41F
6-hr Min temp: 34F
BHO SA 1755 CLR 75 189/41/26/2920G30/009/ FEW CU ALQDS FEW CI NW-N/
8/103 51013 10041 20034
 
 
SUMMARY FOR SATURDAY, DECEMBER 31, 2016

TEMPERATURE (DEGREES F)
MAX.....41   NORMAL.....35
MIN.....23   NORMAL.....19
MEAN....32   NORMAL.....27
 
DEPARTURE FROM 30-YEAR NORMAL........................+5
TOTAL DEPARTURE FOR THE MONTH.......................+39 [+1.0 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............33   DEPARTURE..........-5
TOTAL HEATING UNITS FOR THE MONTH............1002   DEPARTURE.........-41
TOTAL HEATING UNITS FOR THE SEASON...........2032   DEPARTURE........-273
TOTAL HEATING UNITS LAST SEASON TO DATE......1656   DIFFERENCE.......+376
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................46 SSW AT 9:42 P.M.
                   ASOS........................51 SSW AT 9:43 P.M.
                   DAVIS.......................48 WSW AT 9:41 P.M. RMY 50
FASTEST MILE FOR YESTERDAY.....................35 SSW AT 9:44 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................38 SSW AT 9:44 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................36 WSW AT 9:44 P.M.
AVERAGE WIND SPEED AND DIRECTION.............15.4 SSW
                   ASOS......................25.6
                   DAVIS.....................14.0 WNW [302 Deg.]
*Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.15  DEPARTURE......+0.01
                         ASOS..............0.16
TOTAL PRECIPITATION FOR THE MONTH..........2.77  DEPARTURE......-2.12
                         ASOS..............3.12
TOTAL PRECIPITATION FOR THE YEAR..........39.74  DEPARTURE.....-13.68
                         ASOS.............40.55
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.6
TOTAL SNOWFALL FOR THE MONTH................7.8  DEPARTURE.......-5.6
TOTAL SNOWFALL FOR THE SEASON...............7.8  DEPARTURE.......-8.2
 
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
 
12/1  55/39/47/+10/0.20/0.0/385/69          36 W   AERO 37 W   RMY 36
12/2  48/34/41/+5/0.00/0.0/535/96           32 W   AERO 32 W   RMY N/A
13/3  44/31/38/+2/0.00/0.0/445/80           37 WNW AERO 39 WNW RMY 40
12/4  39/27/33/-2/0.00/0.0/355/64           25 NW  AERO 25 NW  RMY N/A
12/5  36/27/32/-3/0.13/0.4/000/00           26 W   AERO 25 W   RMY 29
12/6  42/30/36/+1/0.00/0.0/392/71           22 W   AERO 21 W   RMY N/A
12/7  39/34/37/+3/0.10/0.0/000/00           21 E   AERO 21 E   RMY N/A
12/8  40/29/35/+1/0.00/0.0/033/06           30 W   AERO 31 W   RMY 33
12/9  35/21/28/-6/0.00/0.0/549/100          35 W   AERO 36 WNW RMY 34
12/10 27/17/22/-11/0.00/0.0/544/99          26 WNW AERO 27 WNW RMY 29
12/11 33/16/25/-8/0.06/0.4/411/75           17 SSW AERO 15 SW  RMY N/A
12/12 41/27/34/+1/0.35/0.9/038/07           29 ESE AERO 29 SE  RMY 30
12/13 41/30/36/+4/0.00/0.0/427/78           25 WSW AERO 25 W   RMY 27
12/14 40/26/33/+1/0.00/0.0/530/97           30 WNW AERO 31 WNW RMY N/A
12/15 29/13/21/-11/T/T/420/77               50 W   AERO 62 W   RMY 56
12/16 18/01/10/-21/0.00/0.0/485/89          39 WNW AERO 51 WNW RMY N/A
12/17 36/18/27/-4/0.60/4.3/000/00           25 SSW AERO 28 SSW RMY N/A
12/18 55/30/43/+12/0.05/0.0/000/00          47 WSW AERO 53 S   RMY 53
12/19 30/17/24/-6/0.00/0.0/273/50           26 WNW*AERO 28 NW  RMY 26
12/20 32/13/23/-7/0.00/0.0/359/66           28 SSE AERO 29 SSW RMY N/A
12/21 40/25/33/+3/0.00/0.0/354/65           28 SSE AERO 28 SSW RMY 30
12/22 38/29/34/+5/T/T/033/06                28 SSE AERO 29 S   RMY 30
12/23 44/29/37/+8/0.00/0.0/512/94           25 WNW AERO 25 WNW RMY N/A
12/24 41/34/38/+9/0.39/0.0/033/06           30 SSW AERO 31 SSW RMY 30
12/25 43/25/34/+6/0.00/0.0/545/100          35 NW  AERO 37 NW  RMY 36
12/26 46/20/33/+5/..../0.0/425/78           39 S   AERO 40 S   RMY N/A
12/27 56/35/46/+18/..../0.0/.../..          51 SW  AERO 55 SW  RMY N/A
12/28 40/29/35/+7/0.00/0.0/.../..           31 W   AERO 32 W   RMY 26
12/29 40/28/34/+7/..../.../000/00           38 NW  AERO 44 NW  RMY 42
12/30 37/26/32/+5/..../.../.../..           46 W   AERO 55 WSW RMY 50
12/31 43/23/32/+5/..../.../.../..           46 SSW AERO 51 SSW RMY 50
 
01/01 Low temp since midnight is 33F; normal low is now 19F
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 1
HIGH 58F IN 1966
LOW -6F IN 1918
PRECIP 1.45 INS. IN 1982
SNOWFALL 7.2 INS. IN 1938
PEAK GUST 90e MPH S IN 1945
 
RECORDS FOR JANUARY 2
HIGH 62F IN 1890
LOW -7F IN 1899,1918
PRECIP 2.10 INS. IN 1987
SNOWFALL 9.0 INS. IN 1904
PEAK GUST 85e MPH S IN 1942
 
TODAY'S REPORT PREPARED BY: Robert Millette