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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, FEBRUARY 1, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

MILD AND CLOUDY WITH LIMITED VISIBILITY 
FOLLOWING SOME LIGHT SNOW OVERNIGHT....

Today we observed overcast skies as low clouds dominated the 
region. Visibility was limited due to fog, being 2 miles in 
the morning and 25 miles in the afternoon. Wind was light 
throughout the day, being calm at the 10 A.M. observation.
Light snow overnight left trace amounts on the ground, all 
of it falling early this morning.  

With January passing us by, we continue to see an increase in
our rain and snowfall deficits. The January rainfall total is
1.46 inches, 2.89 inches below the average. This total appears
to be the 8th driest January on record. We are also lacking in 
the snowfall department, amounting to only 4.2 inches, 12.4 
inches below the normal. This total seems to set the record for
the 15th least snowiest January on record.

The high so far today is 39F, 5 degrees above the normal high
of 34F. The low since midnight is 30F, 13 degrees below the
normal low of 17F.


Today's Observations:

7 A.M.
Weather: Overcast stratus, thin glaze ice on road
and any other surfaces outside
Temperature: 31F; Dew Point: 31F; Wind: W at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.03 ins. Hg: falling steadily
Visibility: 2 miles, fog
6-hr Max temp: 33F
6-hr Min temp: 30F
24-hr Precip:  0.01 ins.
24-hr Snowfall: Trace 
BHO SA 1155 E10 OVC 2F 170/31/31/2704/003/ THN GLZ WND 
L/V/ 8/6// 70001 58010 10033 20030

10 A.M.
Weather: Overcast stratus
Temperature: 33F; Dew Point: 33F; Wind: Calm
Sea-level pressure: 29.98 ins. Hg: falling, then falling more slowly
Visibility: 2 miles, fog
3-hr Precip:   0.00 ins.
3-hr Snowfall:  0.0 ins.
BHO SA 1455 E10 OVC 2F 154/33/33/0000/998/ WND CALM/ 8/6// 56014

1 P.M.
Weather: Overcast stratus
Temperature: 38F; Dew Point: 33F; Wind: WNW at 3 kts,
Wind: Light and variable
Sea-level pressure: 29.85 ins. Hg: falling, then falling more rapidly
Visibility: 25 miles, distant fog
6-hr Max temp: 39F
6-hr Min temp: 31F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 E10 OVC 25 107/38/33/3003/985/ DSNT FG ALQDS WND L/V/ 
8/6// 58047 10039 20031 


SUMMARY FOR FRIDAY, JANUARY 31, 2020 

TEMPERATURE (DEGREES F)
MAX.....43   NORMAL.....34
MIN.....24   NORMAL.....17
MEAN....34   NORMAL.....26

DEPARTURE FROM 30-YEAR NORMAL.....................+8
TOTAL DEPARTURE FOR THE MONTH....................+249 [+7.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............31  DEPARTURE........-8
TOTAL HEATING UNITS FOR THE MONTH..............978  DEPARTURE......-248
TOTAL HEATING UNITS FOR THE SEASON............3229  DEPARTURE......-302
TOTAL HEATING UNITS LAST SEASON TO DATE.......3495  DEPARTURE......-266

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................22 S   AT 11:01 A.M.  
                   AERO.........................21 S   AT 11:19 A.M.   
                   ASOS.........................21 WSW AT 11:01 A.M. 
                   DAVIS........................22 WSW AT 10:59 A.M. RMY 22
FASTEST MILE FOR YESTERDAY......................14 S   AT 11:02 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................14 SW  AT  3:14 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................15 WSW AT 11:00 A.M.
AVERAGE WIND SPEED AND DIRECTION..............8.9 S                 
                   ASOS.......................9.0
                   DAVIS......................8.9 WSW [234 deg.]


PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01  DEPARTURE......-0.13
                         ASOS..............0.03
TOTAL PRECIPITATION FOR THE MONTH..........1.46  DEPARTURE......-2.89
                         ASOS..............1.54
TOTAL PRECIPITATION FOR THE YEAR...........1.47  DEPARTURE......-2.88
                         ASOS..............1.57

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH................4.2  DEPARTURE......-12.9
TOTAL SNOWFALL FOR THE SEASON..............24.2  DEPARTURE.......-8.9


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


01/01  38/30/34/+7/..../0.0/400/73           39 W   AERO 38 W   RMY 41 
01/02  46/29/38/+11/0.00/0.0/269/49          28 SW  AERO 28 SW  RMY 30
01/03  46/40/43/+17/0.00/0.0/000/00          21 SW  AERO 18 SW  RMY N/A
01/04  46/36/41/+15/..../0.0/000/00          16 NNW AERO 16 NNW RMY N/A
01/05  36/24/30/+4/..../0.5/116/21           43 NW  AERO 46 NW  RMY 43
01/06  33/23/28/+2/T/T/133/24                26 W   AERO 21 W   RMY N/A
01/07  38/29/34/+8/..../0.4/161/29           30 WSW AERO 28 WSW RMY N/A
01/08  39/22/31/+5/..../0.4/350/63           50 W   AERO 46 WNW RMY 47
01/09  28/16/22/-4/..../0.0/540/97           43 WNW AERO 40 WNW RMY N/A
01/10  48/23/36/+11/T/..../0.0/106/19        37 SW  AERO 37 SW  RMY 39 
01/11  65/46/56/+31/..../0.0/408/73          53 SSW AERO 53 SSW RMY N/A           
01/12  68/36/52/+27/..../0.0/297/53          60 SSW AERO 62 SSW RMY N/A
01/13  39/31/35/+10/0.01/T/000/00            21 NE  AERO 20 NE  RMY N/A
01/14  38/31/35/+10/0.01/0.0/000/00          16 W   AERO 15 W   RMY N/A
01/15  48/35/42/+17/0.00/0.0/503/89          24 W   AERO 23 W   RMY 24
01/16  42/24/33/+8/0.06/T/142/25             54 W   AERO 52 W   RMY 59    
01/17  24/10/17/-8/0.00/0.0/552/97           50 NW  AERO 48 NW  RMY N/A
01/18  28/8/18/-7/0.35/2.8/000/00            28 WSW AERO 24 ESE RMY N/A
01/19  40/21/31/+6/0.02/0.2/332/58           44 W   AERO 44 W   RMY 42
01/20  26/12/19/-6/0.00/0.0/442/77           33 NW  AERO 32 NW  RMY N/A
01/21  24/10/17/-8/0.00/0.0/472/82           22 NW  AERO 21 NW  RMY N/A
01/22  34/13/24/-1/0.00/0.0/566/98           16 SW  AERO 16 SW  RMY N/A
01/23  46/26/36/+11/0.00/0.0/348/60          21 SW  AERO 20 SW  RMY 19
01/24  44/31/38/+13/0.00/0.0/524/90          21 ENE AERO 17 ENE RMY N/A
01/25  50/36/43/+18/0.57/0.0/..../..         41 ESE AERO 41 ESE RMY 40 
01/26  49/35/42/+17/0.00/0.0/..../..         33 W   AERO 31 W   RMY 32
01/27  43/33/38/+13/0.00/0.0/..../..         30 W   AERO 29 W   RMY 29
01/28  37/30/34/+9/0.00/0.0/..../..          25 NW  AERO 25 NW  RMY 27
01/29  38/23/31/+6/0.00/0.0/..../..          24 N   AERO 23 N   RMY 24
01/30  34/16/25/-1/0.00/0.0/..../..          17 NNW AERO 16 NNW RMY N/A
01/31  43/24/34/+8/0.00/0.0/..../..          22 S   AERO 21 S   RMY 22

02/01 The low since midnight is 30F, daily normal minimum is 17F 

DAILY RECORDS FOR JANUARY

1/11/20: DAILY RECORD MAXIMUM TEMPERATURE OF 65F,
         BREAKS PREVIOUS RECORD OF 60F SET IN 1975.

1/11/20: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 46F,
         BREAKS PREVIOUS RECORD OF 40F SET IN 1983.

1/12/20: DAILY RECORD MAXIMUM TEMPERATURE OF 68F,
         BREAKS PREVIOUS RECORD OF 60 SET IN 2018.
         TIES HIGHEST MAXIMUM TEMPERATURE FOR JANUARY,
         MATCHES 68F SET ON 1/26/1950.

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

RECORDS FOR FEBRUARY 1
HIGH 65F IN 1989
LOW -9F IN 1920
PRECIP 1.30 INS. IN 1898
SNOWFALL 11.0 INS. IN 1898
PEAK GUST 66e MPH SSW IN 1951

RECORDS FOR FEBRUARY 2
HIGH 55F IN 1951, 1973
LOW -12F IN 1961
PRECIP 1.91 INS. IN 1999
SNOWFALL 16.5 INS. IN 2015
PEAK GUST 92 MPH SW IN 1970

TODAY'S REPORT PREPARED BY: Benjamin Turner