BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, DECEMBER 4, 2016 
 
CLOUDY AND COLD START ENDS CLEAR BUT COLD
 
Temperatures remained cold with lows dropping into the 20s and a high
reaching 39 by the 1:00PM EST observation.  Dew points remained in the
lower 20s. Winds weakened throughout the day after being very strong
around midnight, winds were in the single digits by the afternoon. 
began to increase out of the Visibility was great at up to 70 miles.
Pressure has been steadily rising throughout the day but had leveled
off and was decreasing slightly by the final observation. 
 
 
PRELIMINARY STATS FOR NOVEMBER 2016
 
TEMPERATURE, Deg. F
Avg. Max. 52.8 [+2.8]
Avg. Min. 36.3 [+2.8]
Mean      44.6 [+2.9]
24-hour corrected mean: 44.0
Max. for month: 69F on 2nd
Min. for month: 28F on 21st, 22nd, 23rd, 28th

HEATING DEGREE DAYS
Total heating units: 609 [-89]
Total for the season: 1030 [-231]
Total for last season: 1002

PRECIPITATION, Inches
Total: 2.61 [-2.15]
Greatest in 24 hrs: 1.27 in. on 15th-16th

WIND, mph
Avg. uncorrected wind speed: 11.4
Avg. corrected wind speed: 11.9
Prevailing wind direction: NW at 17%
Peak gust and direction: 45 ESE on 29th

SUNSHINE:
Campbell-Stokes card minutes: 9012 mins. of possible 17010 mins. or 53%
Astronomical total minutes: 9315 mins. of possible 17593 mins. or 53%
 
 
7 A.M.
Weather: Broken Stratus, Few Stratocumulus
Temperature: 32F; Dew Point: 21F; Wind: NNW at 08 kts
Sea-level pressure: 30.16 ins. Hg, falling then rising and higher
Visibility: 70 miles
6-hr Max temp: 32F
6-hr Min temp: 29F
24-hr precip: 0.00 in.
BHO SA 1155 E45 BKN 70 205/32/21/3308/016/ FEW SC E/ 8/7// 53007
10032 20029
 
10 A.M.
Weather: Broken stratocumulus
Temperature: 33F; Dew Point: 20F; Wind: NNW at 09 kts,
Sea-level pressure: 30.17 ins. Hg, falling then rising and higher
Visibility: 70 miles
BHO SA 1455 E40 BKN 70 218/33/20/3309/017/ 8/5// 53013
 
1 P.M.
Weather: Few stratocumulus distant E-SE
Temperature: 39F; Dew Point: 20F; Wind: NW at 12 kts
Sea-level pressure: 30.13 ins. Hg, steady, then falling
Visibility: 70 miles
6-hr Max temp: 39F
6-hr Min temp: 32F
BHO SA 1755 CLR 70 206/39/20/3112/013/ FEW SC DSNT E-SE/
8/500 56012 10039 20032
 
 
SUMMARY FOR SATURDAY, DECEMBER 3, 2016

TEMPERATURE (DEGREES F)
MAX.....44   NORMAL.....44
MIN.....31   NORMAL.....28
MEAN....38   NORMAL.....36
 
DEPARTURE FROM 30-YEAR NORMAL........................+2
TOTAL DEPARTURE FOR THE MONTH.......................+17 [+5.5 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............27   DEPARTURE..........-3
TOTAL HEATING UNITS FOR THE MONTH..............69   DEPARTURE.........-18
TOTAL HEATING UNITS FOR THE SEASON...........1099   DEPARTURE........-249
TOTAL HEATING UNITS LAST SEASON TO DATE......1071   DIFFERENCE........+28
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................36 WNW AT 12:42 P.M.
                   ASOS........................39 WNW AT  2:51 P.M.
                   DAVIS.......................38   W AT  1:30 P.M. RMY 40
FASTEST MILE FOR YESTERDAY.....................28 WNW AT  11:58 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................28 NW  AT  11:58 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................27 W   AT  11:58 A.M.
AVERAGE WIND SPEED AND DIRECTION.............17.6 WNW
                   ASOS......................16.9
                   DAVIS.....................15.2 W [281 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..........0.20  DEPARTURE......-0.28
                         ASOS..............0.21
TOTAL PRECIPITATION FOR THE YEAR..........37.17  DEPARTURE.....-11.84
                         ASOS.............37.64
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.3
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE.......-0.8
TOTAL SNOWFALL FOR THE SEASON.............Trace  DEPARTURE.......-3.4
 
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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
 
11/1  55/29/42/-4/0.00/0.0/600/97           22 SSE AERO 22 S   RMY N/A
11/2  69/45/57/+11/0.00/0.0/425/69          24 SSW AERO 24 S   RMY 26
11/3  65/49/57/+11/0.01/0.0/025/04          38 W   AERO 41 W   RMY 38
11/4  56/35/46/+1/0.00/0.0/587/96           26 NW  AERO 26 NW  RMY 30
11/5  55/32/44/-1/0.00/0.0/250/41           24 W   AERO 23 W   RMY 24
11/6  49/39/44/-1/0.04/T/091/15             23 N   AERO 23 N   RMY 23
11/7  46/33/40/-5/0.00/0.0/423/70           21 N   AERO 21 N   RMY 20
11/8  64/36/50/+6/0.00/0.0/590/98           17 W   AERO 15 SSW RMY N/A
11/9  60/43/52/+8/T/0.0/090/15              22 NNW AERO 22 NW  RMY N/A
11/10 52/34/43/-1/0.00/0.0/507/85           28 SSW AERO 30 SSW RMY 31
11/11 59/35/47/+4/0.00/0.0/565/95           39 NW  AERO 44 NW  RMY 45
11/12 47/31/39/-4/0.00/0.0/569/96           38 NW  AERO 44 NW  RMY 23   
11/13 59/37/48/+5/0.00/0.0/519/88           23 W   AERO 22 W   RMY N/A
11/14 66/44/55/+13/0.00/0.0/547/93          24 WSW AERO 22 WSW RMY 25
11/15 57/46/52/+10/1.23/0.0/000/00          32 ENE AERO 33 ENE RMY 35
11/16 57/45/51/+9/0.04/0.0/000/00           26 W   AERO 25 W   RMY 28
11/17 55/41/48/+7/0.00/0.0/169/29           25 WNW AERO 29 NW  RMY 29
11/18 60/38/49/+8/0.00/0.0/580/100          21 NNE AERO 22 N   RMY 23
11/19 53/40/47/+6/0.02/0.0/445/77           18 ENE AERO 18 ENE RMY N/A
11/20 46/29/38/-2/0.04/0.0/006/01           37 SW* AERO 40 SW  RMY N/A
11/21 36/28/32/-8/T/T/138/24                40 W   AERO 44 W   RMY 44
11/22 41/28/35/-5/0.00/0.0/555/97           35 W   AERO 37 W   RMY 36
11/23 43/28/36/-3/0.00/0.0/542/95           32 WNW AERO 33 WNW RMY N/A
11/24 41/29/35/-4/0.05/T/000/00             15 NNE AERO 13 NNE RMY N/A
11/25 46/38/42/+3/0.08/0.0/000/00           24 SE  AERO 23 SE  RMY 25
11/26 45/36/41/+3/0.00/0.0/085/15           18 NW  AERO 17 NW  RMY 28
11/27 44/30/37/-1/0.00/0.0/451/80           26 W   AERO 26 WNW RMY 29
11/28 44/28/36/-2/0.00/0.0/556/99           22 WNW AERO 21 WNW RMY 22
11/29 57/37/47/+10/0.46/0.0/000/00          45 ESE AERO 47 SSE*RMY 47
11/30 57/45/51/+14/0.64/0.0/000/00          32 ENE AERO 33 E   RMY 31
 
 
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/+10/0.20/0.0/000/00          36 W   AERO 37 W   RMY 36
12/2  48/34/41/+5/0.00/0.0/.../..           32 W   AERO 32 W   RMY N/A
13/3  44/31/38/+2/0.00/0.0/.../..           37 WNW AERO 39 WNW RMY 40
 
12/4  Low temp since midnight is 29F; normal low is now 28F
 
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR DECEMBER 4
HIGH 67 IN 1998
LOW -4 IN 1940
PRECIP 1.87 INS. IN 1968
SNOWFALL 6.0 INS. IN 1907
PEAK GUST 73 MPH WNW IN 1980
 
RECORDS FOR DECEMBER 5
HIGH 65 IN 2001
LOW -1 IN 1926
PRECIP 2.86 INS. IN 1993
SNOWFALL 7.0 INS. IN 1926, 1981
PEAK GUST 67 MPH WNW IN 1961, S IN 1973 

TODAY'S REPORT PREPARED BY: Robert Millette