BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JANUARY 2, 2013   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
YEAR 2012 WARMEST ON RECORD
 
YEAR  TEMP(F)
2012  51.7
2010  51.0
1999  50.9
1998  50.8
2006  50.6
 
DECEMBER 2012 STATS:
Temp. deg. F
Av. Max. 42.8
Av. Min. 30.1
Mean     36.5 [+5.2]
24-hr. corr. mean: 36.2
Maximum: 59 on 10th
Minimum: 17 on 31st
Total heating units: 878 [-165]
Total heating season: 2028 [-277]
Total precip: 6.51 ins. {+1.62)
Snowfall: 9.2 ins. [-4.2 ins.]
Max. depth on ground: 7 inches on 30th
Av. uncorrected wind speed: 12.7 MPH
Av. corr. wind speed 13.0 MPH
Peak wind gust: 70 MPH E on 27th
Fastest mile:   51 MPH E on 27th
Sunshine: Campbell-Stokes minutes: 5520/16470 = 33%
Sunshine: Astronomical minutes: 5669/17037 = 33%
 
Additional stats will be forthcoming in the next day or so.
 
Today's observations:
 
7 A.M.
Weather: Stratocumulus layer distant offshore NE-ESE, patch 
altocumulus lenticularis NE-E, altocumulus layer WNW-NNE,
dense cirrus layer extending ESE-WSW
Temperature: 12F; Dew Point: 3F; Wind: W at 10 kts
Sea-level pressure: 29.93 ins. Hg, falling slightly   
Visibility: 45 miles, distant haze
6-hour min. temp: 12F
Snow on ground: 3 inches
BHO SA 1155 CLR 45 135/12/3/2710/993/ SC LYR DSNT OFFSHR NE-ESE
PTCH ACSL NE-E AC LYR WNW-NNE DNS CI LYR XTDNG ESE-WSW DSNT HZ/
8/542 4/003 56002 10016 20012
 
10 A.M.
Weather:  Stratocumulus layer extending WNW-NE, dense cirrus layer
extending ESE-WSW
Temperature: 20F; Dew Point: 8F; Wind: W at 11G18 kts,
Wind: Peak wind 38 knots from WNW @ 9:47 a.m.
Wind: Direction variable WSW-WNW
Sea-level pressure: 29.93 ins. Hg, steady
Visibility: 45 miles, distant haze 
BHO SA 1455 55 SCT 220 SCT 45 135/20/8/2611G18/993/ SC LYR XTDNG
WNW-NE DNS CI LYR XTDNG DSNT HZ ESE-WSW WND 21V30/ 8/502 55000
 
1 P.M.
Weather: Few moderate cumulus NW-E, altocumulus/altocumulus
lenticularis all quadrants, dense cirrus layer distant SE-WSW 
Temperature: 27F; Dew Point: 13F; Wind: WNW at 16G24 kts,
Wind: direction variable W-NNW
Sea-level pressure: 29.89 ins. Hg, rising then falling
Visibility: 50 miles, distant haze
6-hour max: 29F
6-hour min: 11F 
BHO SA 1755 45 SCT E65 BKN 220 BKN 50 123/27/13/2916G24/989/ FEW
MDT CU NW-E AC/ACSL ALQDS DNS CI LYR DSNT SE-WSW DSNT HZ WND 27V33
8/242 58012 10029 20011
 
WEATHER SUMMARY FOR TUESDAY, JANUARY 1
 
TEMPERATURE (DEGREES F)
MAX.....35      NORMAL.....35
MIN.....18      NORMAL.....19
MEAN....27      NORMAL.....27
 
DEPARTURE FROM 30-YEAR NORMAL......................0
TOTAL DEPARTURE FOR THE MONTH......................0 [0 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............38    DEPARTURE.........0
TOTAL HEATING UNITS FOR THE MONTH............38    DEPARTURE.........0
TOTAL HEATING UNITS FOR THE SEASON.........2066    DEPARTURE.......-277
TOTAL HEATING UNITS LAST SEASON TO DATE....1775    DIFFERENCE......+291
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...............44 W   AT  11:17 P.M. *
                   AERO....................44 W   AT  11:17 P.M. *
                   ASOS....................44 W   AT  11:18 P.M.
                   DAVIS...................43 W   AT   9:48 P.M. RMY: 45 
THE FASTEST MILE FOR YESTERDAY.............32 W   AT  11:33 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE..............32 W   AT  11:20 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.............30 W   AT  11:21 P.M.
AVERAGE WIND SPEED AND DIRECTION.........16.6 WNW
                   ASOS..................15.2
                   DAVIS.................14.4 W [280 deg.]
 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE..........-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.00   DEPARTURE..........-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR...........0.00   DEPARTURE..........-0.15
                         ASOS..............0.00
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M.........0.0   DEPARTURE............-0.6
TOTAL SNOWFALL FOR THE MONTH...............0.0   DEPARTURE............-0.6
TOTAL SNOWFALL FOR THE SEASON..............0.0   DEPARTURE............-0.6   
 
 
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 2012 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
12/1  34/25/30/-7/0.08/0.8/000/00     16 E   AERO 14 MPH E   RMY 16
12/2  52/32/42/+6/0.00/0.0/006/01     32 SSW AERO 32 MPH SSW RMY 34
12/3  57/43/50/+14/0.00/0.0/523/94    31 NW  AERO 30 MPH NW  RMY 32
12/4  56/40/48/+13/0.03/0.0/000/00    37 S   AERO 39 MPH S   RMY 38
12/5  56/31/44/+9/0.03/0.0/310/56     38 WNW AERO 37 MPH WNW RMY 40
12/6  38/25/32/-3/0.00/0.0/519/94     31 NW  AERO 30 MPH NW  RMY N/A
12/7  42/30/36/+2/0.02/0.0/000/00     18 SSW AERO 16 MPH SSW RMY 18        
12/8  45/41/43/+9/0.35/0.0/000/00     21 ENE AERO 18 MPH ENE RMY N/A
12/9  45/38/42/+8/0.10/0.0/181/33     24 NNW AERO 24 MPH NNW RMY 25
12/10 59/39/49/+16/0.51/0.0/000/00    32 SSW AERO 33 MPH SSW RMY 35
12/11 54/30/42/+9/0.01/0.0/351/64     25 W   AERO 25 MPH W   RMY 23
12/12 38/26/32/-1/0.00/0.0/126/23     20 NW  AERO 18 MPH NW  RMY N/A
12/13 42/29/36/+4/0.00/0.0/416/76     18 NW  AERO 15 MPH NW  RMY N/A
12/14 47/29/38/+6/0.00/0.0/535/98     28 W   AERO 25 MPH W   RMY 27
12/15 40/31/36/+4/0.00/0.0/530/97     24 NNW AERO 22 MPH NNW RMY 21
12/16 36/31/34/+3/0.25/0.1/000/00     25 E   AERO 22 MPH E   RMY N/A
12/17 44/36/40/+9/0.65/0.0/000/00     31 ENE AERO 29 MPH ENE RMY 30
12/18 50/40/45/+14/0.61/0.0/000/00    28 E   AERO 24 MPH E   RMY N/A
12/19 44/35/40/+10/T/0.0/087/16       42 WNW AERO 40 MPN WNW RMY 43
12/20 42/30/36/+6/T/0.0/262/48        25 NNW AERO 23 MPH NNW RMY N/A
12/21 53/35/44/+14/0.90/0.0/000/00    58 E   AERO 53 MPH E   RMY 57 *
12/22 37/26/32/+3/T/T/136/25          47 W   AERO 47 MPH W   RMY 43
12/23 37/25/31/+2/0.00/0.0/305/56     44 WNW AERO 44 MPH WNW RMY N/A
12/24 39/28/34/+5/0.00/0.0/452/83     25 W   AERO 23 MPH W   RMY 22
12/25 33/25/29/+1/0.03/0.4/000/00     21 NNW AERO 21 MPH NNW RMY 19 
12/26 35/20/28/+0/0.30/1.0/228/43     39 E   AERO 39 MPH E   RMY N/A
12/27 45/30/38/+10/1.64/0.3/.../..    70 E   AERO 71 MPH E   RMY 67
12/28 34/24/29/+1/0.00/0.0/000/00     37 NW  AERO 39 MPH NW  RMY 36
12/29 34/25/30/+3/0.98/6.0/.../..     39 ENE AERO 39 MPH ENE RMY 40
12/30 27/18/23/-4/0.04/0.6/.../..     50 NW  AERO 53 MPH NW  RMY 53
12/31 31/17/24/-3/0/00/0.0/.../..     35 WNW AERO 35 MPH WNW RMY 36
 
1/1   35/18/27/0/0.00/0.0/.../..      44 W   AERO 44 MPH W   RMY 45
1/2   morning low temp: 11F; the normal low is now 19F
 
* correction: added 0.90 precip: 21st
 
DAILY RECORDS FOR DECEMBER 2012
None
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
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
 
RECORDS FOR JANUARY 3
HIGH 64F IN 2000
LOW -4F IN 1904
PRECIP 1.93 INS. IN 1999
SNOW 11.3 INS. 1996
PEAK GUST 92 MPH S IN 1960
 
TODAY'S REPORT PREPARED BY: Robert Skilling/Forrest Iwanik