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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, NOVEMBER 25, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

FAIR WEATHER AFTER A SIGNIFICANT RAIN DAY....

Today featured decreasing clouds, limited visibility,
and light winds in comparison to yesterday. Visibility 
was 45 miles at most, due to a distant layer of haze. 
Wind has been consistent and westerly at about 10 mph.
Rain yesterday left 1.49 inches in the gauge, ending 
before midnight last night, with a brief thunderstorm
during the afternoon. 

The high so far today is 49F, which is 2 degrees above 
the daily normal maximum of 47F. The low since midnight 
is 34F, which is 3 degrees above the normal minimum of 31F.  


Today's Observations:

7 A.M.
Weather: Broken altocumulus
Temperature: 35F; Dew Point: 32F; Wind: W at 13G21 kts
Sea-level pressure: 29.67 ins. Hg, rising steadily
Visibility: 25 miles, distant fog
6-hr Max temp: 36F
6-hr Min temp: 34F
24-hr Precip:  1.49 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 E80 BKN 25 047/35/32/2813G21/967/ DSNT FG ALQDS/ 
8/070 70149 51032 10036 20034

10 A.M.
Weather: Broken altocumulus
Temperature: 42F; Dew Point: 33F; Wind: W at 8 kts
Sea-level pressure: 29.58 ins. Hg, rising steadily
Visibility: 25 miles, distant haze
3-hr Precip: 0.00 ins.
BHO SA 1455 E150 BKN 25 019/42/33/2708/958/ DSNT HZ ALQDS/ 
8/070 51028

1 P.M.
Weather: Scattered altocumulus and cirrostratus
Temperature: 49F; Dew Point: 33F; Wind: W at 9 kts
Sea-level pressure: 29.58 ins. Hg, steady 
Visibility: 25 miles, distant haze
6-hr Max temp: 49F
6-hr Min temp: 35F
3-hr Precip: 0.00 ins.
BHO SA 1755 140 SCT 250 SCT 25 013/49/33/2709/958/ DSNT 
HZ ALQDS/ 8/075 53000 10049 20035


SUMMARY FOR SUNDAY, NOVEMBER 24, 2019 

TEMPERATURE (DEGREES F)
MAX.....44   NORMAL.....47
MIN.....35   NORMAL.....31
MEAN....40   NORMAL.....39

DEPARTURE FROM 30-YEAR NORMAL.....................+1
TOTAL DEPARTURE FOR THE MONTH....................-97 [-4.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............25  DEPARTURE........-1
TOTAL HEATING UNITS FOR THE MONTH..............645  DEPARTURE......+111
TOTAL HEATING UNITS FOR THE SEASON............1085  DEPARTURE.......-12
TOTAL HEATING UNITS LAST SEASON TO DATE.......1157  DEPARTURE.......-72

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................45 N   AT  1:27 P.M.  
                   AERO.........................44 NE  AT 12:54 P.M  
                   ASOS.........................44 NE  AT  1:27 P.M.
                   DAVIS........................46 NE  AT 12:51 P.M. RMY 46
FASTEST MILE FOR YESTERDAY......................33 NE  AT 12:52 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................32 NE  AT 12:53 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................33 NE  AT 12:51 P.M.
AVERAGE WIND SPEED AND DIRECTION..............18.0 ENE                   
                   ASOS.......................17.5  
                   DAVIS......................17.8 N [8 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.49  DEPARTURE......+1.33
                         ASOS..............1.58
TOTAL PRECIPITATION FOR THE MONTH..........3.43  DEPARTURE......-0.36
                         ASOS..............3.59
TOTAL PRECIPITATION FOR THE YEAR..........48.77  DEPARTURE......+1.20
                         ASOS.............49.06

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.2
TOTAL SNOWFALL FOR THE MONTH................0.1  DEPARTURE.......-1.3
TOTAL SNOWFALL FOR THE SEASON...............0.1  DEPARTURE.......-1.6


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

11/01  67/35/51/+5/..../0.0/534/86            67 S   AERO M  M   RMY N/A
11/02  50/31/41/-5/0.00/0.0/612/99            17 WNW AERO 14 W   RMY N/A
11/03  53/35/44/-2/0.00/0.0/567/92            25 WSW AERO 23 W   RMY 26
11/04  53/33/43/-2/0.00/0.0/546/89            24 S   AERO 20 S   RMY 24
11/05  54/44/49/+4/0.33/0.0/000/00            22 S   AERO 18 WNW RMY 28
11/06  51/36/44/-1/0.00/0.0/596/98            28 WSW AERO 23 W   RMY 27
11/07  55/38/47/+2/0.27/0.0/000/00            30 S   AERO 26 SSW RMY 32
11/08  38/23/31/-13/0.00/0.0/555/92           38 NW  AERO 37 WNW RMY 44   
11/09  39/20/30/-14/0.00/0.0/583/97           22 S   AERO 18 S   RMY N/A
11/10  51/30/41/-3/0.00/0.0/174/29            30 SW  AERO 30 SW  RMY 31
11/11  52/39/46/+3/T/0.0/000/00               23 NE  AERO 22 NE  RMY 23
11/12  42/20/31/-12/0.08/0.1/000/00           37 WNW AERO 37 WNW RMY 41
11/13  28/15/22/-21/0.00/0.0/592/100          32 WNW AERO 32 WNW RMY 35
11/14  36/17/28/-14/0.00/0.0/136/23           18 SW  AERO 17 SW  RMY 20 
11/15  51/32/42/0/0.00/0.0/553/94             25 WNW AERO 25 WNW RMY N/A
11/16  35/22/29/-13/0.00/0.0/580/99           35 NNW AERO 35 NNW RMY N/A
11/17  40/21/31/-10/T/T/.../..                28 ENE AERO 27 ENE RMY 29
11/18  36/32/34/-7/..../0.0/.../..            28 NNE AERO 29 N   RMY 31
11/19  42/36/39/-2/.../0.0/.../..             12 SSW AERO  9 NNW RMY N/A
11/20  38/33/36/-4/..../T/.../..              20 NW  AERO 18 NW  RMY 21
11/21  46/30/38/-2/0.00/0.0/.../..            21 NW  AERO 21 NW  RMY N/A
11/22  52/32/42/+2/0.12/0.0/.../..            46 W   AERO 47 W   RMY 47
11/23  44/27/36/-3/0.00/0.0/.../..            29 WNW AERO 29 WNW RMY N/A
11/24  44/35/40/+1/1.49/0.0/.../..            45 N   AERO 44 NE  RMY 46 TSTM

11/25 The low since midnight is 34F, daily normal minimum is 31F

DAILY RECORDS FOR NOVEMBER

11/13/19: DAILY RECORD LOW MAXIMUM TEMPERATURE OF 28F,
          BREAKS PREVIOUS RECORD OF 30F SET IN 1920.
          It was also the third earliest maximum temperature 
          colder than 30F on record, behind only 28F on 11/8/1894 
          and 29F on 11/12/1894.

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

RECORDS FOR NOVEMBER 25
HIGH 71 IN 1979
LOW 13 IN 1938
PRECIP 3.10 INCHES IN 1983
SNOWFALL 8.0 INS IN 1888
PEAK GUST 94e E IN 1950

RECORDS FOR NOVEMBER 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.22 INS IN 1888
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964

TODAY'S REPORT PREPARED BY: Benjamin Turner