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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, NOVEMBER 19, 2016  
ALL TIMES ARE IN EASTERN STANDARD TIME

DISTANT FOG AND STRATOCUMULUS IN THE EAST MOVE IN AS LOW 
PRESSURE SYSTEM NEARS

Skies remained mostly clear today, but stratus and stratocumulus 
lingered in the  east. Visibility reached up to 80 out of the west 
in the morning, but distant fog brought it down to 70. Winds remained 
low out of the northeast, with a peak gust of 18 mph by the 1:00PM EST 
observation. Temperatures reached a high of 52F, with dew points in the 
low 40s. With the low pressure system off shore approaching, pressure 
has been falling quickly from 1017.3 mb at 7:00AM to 1012.0 mb at 1:00PM.

7 A.M.
Weather: Few stratus NNE-S, patches of ground fog in all directions
Temperature: 41F; Dew Point: 38F; Wind: N at 9 kts
Sea-level pressure: 30.04 ins. Hg, falling then rising slightly
Visibility: 20 miles, except for 80 miles SSW-N, distant fog NNE-S
6-hr Max temp: 40F
6-hr Min temp: 38F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 20 173/41/38/3609/004/ FEW ST NNE-S DSNT FG NNE-S VSBY SSW-N 
80 PTCHS GF ALQDS/ 8/600 55004 10047 20040

10 A.M.
Weather: Scattered stratocumulus, few cumulus in all directions
Temperature: 50F; Dew Point: 44F; Wind: NNE at 5 kts,
Wind Speed: Light
Sea-level pressure: 30.00 ins. Hg, falling, then more quickly
Visibility: 70 miles, except for 15 miles N-SSE, distant fog in all directions
BHO SA 1455 4 SCT 70 160/50/44/0305/000/ FEW CU ALQDS DSNT FG ALQDS VSBY N-SSE 
15 WND LGT/ 8/500 58013

1 P.M.
Weather: Few stratocumulus N-SW
Temperature: 52F; Dew Point: 44F; Wind: ENE at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.88 ins. Hg, falling unsteadily
Visibility: 30 miles, except 70 SSW-NW, distant fog in all directions
6-hr Max. temp: 52F
6-hr Min. temp: 41F
BHO SA 1755 CLR 30 120/52/44/0606/988/ FEW SC N-SW DSNT FG ALQDS VSBY SSW-NW 70 
WND LGT/ 8/600 56040 10052 20041

SUMMARY FOR FRIDAY, NOVEMBER 18, 2016
 
TEMPERATURE (DEGREES F)
MAX.....60   NORMAL.....49
MIN.....38   NORMAL.....33
MEAN....49   NORMAL.....41

DEPARTURE FROM 30-YEAR NORMAL........................+8
TOTAL DEPARTURE FOR THE MONTH.......................+77 [+4.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............16   DEPARTURE..........-8
TOTAL HEATING UNITS FOR THE MONTH.............306   DEPARTURE.........-77
TOTAL HEATING UNITS FOR THE SEASON............727   DEPARTURE........-219
TOTAL HEATING UNITS LAST SEASON TO DATE.......723   DIFFERENCE.........+4

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................21 NNE AT 9:18 P.M. 
                   ASOS........................24 N   AT 9:44 A.M.
                   DAVIS.......................21 N   AT 9:43 A.M. RMY 23
FASTEST MILE FOR YESTERDAY.....................16 NW  AT 5:53 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................16 NE  AT 9:18 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE.................14 NW  AT 7:13 A.M.   
AVERAGE WIND SPEED AND DIRECTION.............11.0 NW
                   ASOS......................11.6
                   DAVIS......................9.9 N   [350 Deg.]
* Last of several 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..........1.32  DEPARTURE......-1.51
                         ASOS..............1.39
TOTAL PRECIPITATION FOR THE YEAR..........35.68  DEPARTURE.....-10.92
                         ASOS.............36.09


PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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

11/1  55/29/42/-4/0.00/600/97           22 SSE AERO 22 S   RMY N/A
11/2  69/45/57/+11/0.00/425/69          24 SSW AERO 24 S   RMY 26
11/3  65/49/57/+11/0.01/025/04          38 W   AERO 41 W   RMY 38
11/4  56/35/46/+1/0.00/587/96           26 NW  AERO 26 NW  RMY 30
11/5  55/32/44/-1/0.00/250/41           24 W   AERO 23 W   RMY 24
11/6  49/39/44/-1/0.04/091/15           23 N   AERO 23 N   RMY 23
11/7  46/33/40/-5/0.00/423/70           21 N   AERO 21 N   RMY 20
11/8  64/36/50/+6/0.00/590/98           17 W   AERO 15 SSW RMY N/A
11/9  60/43/52/+8/T/090/15              22 NNW AERO 22 NW  RMY N/A
11/10 52/34/43/-1/0.00/507/85           28 SSW AERO 30 SSW RMY 31
11/11 59/35/47/+4/0.00/565/95           39 NW  AERO 44 NW  RMY 45
11/12 47/31/39/-4/0.00/.../..           38 NW  AERO 44 NW  RMY 23    
11/13 59/37/48/+5/0.00/.../..           23 W   AERO 22 W   RMY N/A
11/14 66/44/55/+13/0.00/.../..          24 WSW AERO 22 WSW RMY 25
11/15 57/46/52/+10/1.23/.../..          32 ENE AERO 33 ENE RMY 35
11/16 57/45/51/+9/0.04/.../..           26 W   AERO 25 W   RMY 28
11/17 55/41/48/+7/0.00/.../..           25 WNW AERO 29 NW  RMY 29
11/18 60/38/49/+8/0.00/.../..           21 NNE AERO 22 N   RMY 23

11/19 Low temp since midnight is 40F; normal low is now 33F


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

RECORDS FOR NOVEMBER 19
HIGH 72 IN 1941
LOW 10 IN 1936
PRECIP 1.92 INCHES IN 1926
SNOWFALL 11.0 INS IN 1986
PEAK GUST 59e E IN 1945

RECORDS FOR NOVEMBER 20
HIGH 72 IN 1953
LOW 10 IN 1894
PRECIP 2.78 INS IN 1988
SNOWFALL 3.0 INS IN 1897
PEAK GUST 73e S IN 1950
 
TODAY'S REPORT PREPARED BY: Lizzy Suzedell