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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JANUARY 11, 2017  
ALL TIMES ARE IN EASTERN STANDARD TIME

WINDS GUST OVER 50 MPH THIS MORNING, PRECIP. TOTALS 0.31 IN.

Winds were consistently gusting 40-50 MPH early this morning
as light rain fell.  Rain stopped before 6:00AM, and  winds
began to calm shortly thereafter. Precipitation totaled 0.31 in.

Temperatures continued to warm after yesterday's 1:00PM ob
to a max. of 46F this morning.  After a brief decrease, they
rose to 53F by today's 1:00PM ob, 19F above the normal.  The
min. temp. since midnight is 41F, 24F above normal.

Skies quickly cleared as the storm system moved offshore.
Overcast skies at 7:00AM turned to mostly sunny by 9:00AM
and remained clear for the 10:00AM and 1:00PM observations.
Visibility also improved to 70 miles in the late afternoon
and early morning.


Today's Observations:

7 A.M.
Weather: Broken stratocumulus, overcast stratus
Temperature: 46F; Dew Point: 42F; Wind: SW at 23G32 kts,
Peak Wind: 42 kts (48 MPH) SSW at 6:10AM
Sea-level pressure: 30.16 ins. Hg rising, then more quickly
Visibility: 30 miles, except 40 miles WSW-NE
6-hr Max temp: 46F
6-hr Min temp: 43F
24-hr precip: 0.31 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 E18 BKN 24 OVC 30 215/46/42/2223G32/016/ VSBY WSW-NE 40
PK WND 2042/10/ 8/6// 53007 MANUAL 70031 ASOS 70035 10046 20043

10 A.M.
Weather: Few cumulus ENE-NW, few cirrus NNE-SW
Temperature: 47F; Dew Point: 38F; Wind: SW at 17G28 kts,
Peak Wind: 29 kts (33 MPH) SW at 8:58AM
Sea-level pressure: 30.26 ins. Hg, rising, then more slowly
Visibility: 70 miles
BHO SA 1455 CLR 70 248/47/38/2317G28/026/ FEW CU ENE-NW FEW CI NNE-SW
PK WND 2229/58/ 8/105 51033

1 P.M.
Weather: Few cirrus NE-WNW
Temperature: 53F; Dew Point: 31F; Wind: SW at 13G20 kts
Sea-level pressure: 30.25 ins. Hg, falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 53F
6-hr Min temp: 45F
BHO SA 1755 CLR 70 243/53/31/2313G20/025/ FEW CI NE-WNW/
8/004 56005 10053 20045


SUMMARY FOR TUESDAY, JANUARY 10, 2017
 
TEMPERATURE (DEGREES F)
MAX.....41   NORMAL.....34
MIN.....14   NORMAL.....17
MEAN....28   NORMAL.....25

DEPARTURE FROM 30-YEAR NORMAL........................+3
TOTAL DEPARTURE FOR THE MONTH........................+7 [+0.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............37   DEPARTURE..........-3
TOTAL HEATING UNITS FOR THE MONTH.............382   DEPARTURE..........-7
TOTAL HEATING UNITS FOR THE SEASON...........2414   DEPARTURE........-279
TOTAL HEATING UNITS LAST SEASON TO DATE......1989   DIFFERENCE.......+425

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................35 SE  AT  7:59 P.M.
                   ASOS........................36 SSE AT 10:52 P.M.
                   DAVIS.......................34 S   AT 10:51 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................27 SE  AT  6:37 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................25 SSE AT  6:38 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................26 SSE AT  6:38 P.M.
AVERAGE WIND SPEED AND DIRECTION.............14.5 SE
                   ASOS......................14.0
                   DAVIS.....................12.7 SSW [210 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.31  DEPARTURE......+0.17
                         ASOS..............0.35
TOTAL PRECIPITATION FOR THE MONTH..........2.45  DEPARTURE......+1.03
                         ASOS..............2.63
TOTAL PRECIPITATION FOR THE YEAR...........2.45  DEPARTURE......+1.03
                         ASOS..............2.63

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH...............11.2  DEPARTURE.......+5.6
TOTAL SNOWFALL FOR THE SEASON..............19.0  DEPARTURE.......-2.6

PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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

1/1   41/29/35/+8/0.09/0.0/.../..           35 W   AERO 36 W   RMY 34
1/2   38/29/34/+7/0.00/0.0/.../..           21 E   AERO 20 E   RMY N/A  
1/3   42/37/40/+14/1.14/0.0/000/00          39 ENE AERO 41 ENE RMY 34
1/4   44/30/37/+11/0.11/T/.../..            41 WNW AERO 46 WNW RMY 45 
1/5   30/23/27/+1/0.00/0.0/.../..           37 W   AERO 39 W   RMY 38
1/6   30/20/25/-1/0.05/1.7/.../..           20 W   AERO 20 W   RMY N/A
1/7   22/14/18/-8/..../.../.../..           32 NNW AERO 39 NNW RMY 38
1/8   20/06/13/-13/..../.../.../..          26 NNW AERO 29 NNW RMY N/A
1/9   17/4/11/-15/0.00/0.0/.../..           23 SSW AERO 23 SSW RMY 25
1/10  41/14/28/+3/..../0.0/.../..           35 SE  AERO 37 SE  RMY N/A

1/11 Low temp since midnight is 41F; normal low is now 17F

DAILY RECORDS FOR JANUARY 2017
None so far.

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

RECORDS FOR JANUARY 11
HIGH 59F IN 1975
LOW -7F IN 1968
PRECIP 1.58 INS. IN 2008
SNOW 10.2 INS. 1927
PEAK GUST 95e MPH S IN 1980

RECORDS FOR JANUARY 12
HIGH 57F IN 1913, 1975
LOW -15F IN 1886
PRECIP 2.04 INS. IN 2011
SNOW 18.2 INS. IN 2011
WIND 84e MPH S IN 1980

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle