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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, MARCH 1, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

PARTLY CLOUDY WITH INCREASING VISIBILITY
ATOP GREAT BLUE HILL....

Visibility has increased since this morning,
reaching almost 80 miles by the 1 P.M. 
observation. A northwesterly wind has been
coming in at around 15 mph, with a max gust 
of 26 mph so far today. Weather conditions
consist of partly cloudy skies, but at most
points abundant sunshine. 

Last month is tied for the 2nd Lowest February Snowfall:

BHO Lowest February Snowfall, inches (1885-2020):

1) 0.4 in 1937
2) 0.6 in 1984
   0.6 in 2020
4) 1.0 in 1925
   1.0 in 1998
6) 1.5 in 1941
7) 1.8 in 1912
   1.8 in 1954

Provided by: Mike Iacono, BHO Chief Scientist

The high so far today is 31F degrees, this is 9 degrees 
below the normal of 40F. The low since midnight is 15F, 
7 degrees below the normal daily minimum of 22F.


Today's Observations:

7 A.M.
Weather: Broken cirrostratus, few cumulus offshore
Temperature: 16F; Dew Point: 8F; Relative Humidity: 72%
Wind: WNW at 10 kts
Sea-level pressure: 30.03 ins. Hg: rising unsteadily
Visibility: 70 miles
6-hr Max temp: 18F
6-hr Min temp: 15F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 CLR 70 170/16/8/2910/003/ FEW DSNT CU OFFSHR/ 
8/100 51020 10018 20015

10 A.M.
Weather: Scattered cirrostratus, few cumulus
Temperature: 25F; Dew Point: 8F; Relative Humidity: 48%
Wind: NW at 9G18 kts
Sea-level pressure: 30.06 ins. Hg: falling then rising
Visibility: 65 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 250 SCT 65 178/25/8/3209G18/006/ FEW CU ALQDS/ 
8/108 50008

1 P.M.
Weather: Scattered cirrostratus, few cumulus
Temperature: 31F; Dew Point: 8F; Relative Humidity: 38%
Wind: WNW at 7G16 kts 
Sea-level pressure: 30.04 ins. Hg: falling, then more slowly 
Visibility: 75 miles
6-hr Max temp: 31F
6-hr Min temp: 16F
6-hr Precip:  0.00 ins. 
6-hr Snowfall: 0.0 ins.
BHO SA 1755 250 SCT 75 171/31/8/3207G16/004/ FEW CU ALQDS/ 
8/108 58007 10031 20016 

SUMMARY FOR SATURDAY, FEBRUARY 29, 2020 

TEMPERATURE (DEGREES F)
MAX.....35   NORMAL.....40
MIN.....19   NORMAL.....22
MEAN....27   NORMAL.....31

DEPARTURE FROM 30-YEAR NORMAL....................-4
TOTAL DEPARTURE FOR THE MONTH..................+158 [+5.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............38  DEPARTURE........+4
TOTAL HEATING UNITS FOR THE MONTH..............911  DEPARTURE......-164
TOTAL HEATING UNITS FOR THE SEASON............4140  DEPARTURE......-428
TOTAL HEATING UNITS LAST SEASON TO DATE.......4485  DEPARTURE......-345

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................32 W   AT  4:44 P.M.  
                   AERO.........................32 W   AT  4:44 P.M.   
                   ASOS.........................32 WNW AT  4:44 P.M. 
                   DAVIS........................33 WNW AT  4:44 P.M. RMY 34
FASTEST MILE FOR YESTERDAY......................23 W   AT  4:44 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................22 WNW AT  4:45 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................24 W   AT  4:45 P.M.
AVERAGE WIND SPEED AND DIRECTION..............12.8 WNW                
                   ASOS.......................13.0
                   DAVIS......................13.1 W [278 deg.]


PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.17
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........3.20  DEPARTURE......-0.87
                         ASOS..............3.37
TOTAL PRECIPITATION FOR THE YEAR...........4.66  DEPARTURE......-3.76
                         ASOS..............4.91

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH................0.6  DEPARTURE......-13.3
TOTAL SNOWFALL FOR THE SEASON..............24.8  DEPARTURE......-22.2


PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

02/01  38/30/34/+8/0.01/T/..../..          14 WSW AERO 14 WSW RMY N/A
02/02  40/30/35/+9/0.00/0.0/..../..        18 W   AERO 18 WNW RMY 18
02/03  44/27/36/+10/0.00/0.0/..../..       28 W   AERO 28 W   RMY 28
02/04  44/33/39/+13/0.00/0.0/..../..       19 E   AERO 16 E   RMY 18
02/05  41/30/36/+10/0.00/0.0/..../..       20 NNW AERO 19 NNW RMY N/A
02/06  31/30/34/+8/0.00/0.0/..../..        29 E   AERO 28 E   RMY 27
02/07  53/25/39/+12/..../0.1/..../..       71 WSW AERO 71 SSW RMY 73
02/08  33/20/27/0/T/T/..../..              46 W   AERO 44 W   RMY 44
02/09  33/15/24/-3/T/T/..../..             30 SSE AERO 29 SSE RMY N/A
02/10  42/33/38/+11/..../0.0/..../..       39 SSW AERO 39 SSW RMY 39
02/11  40/36/38/+11/..../0.0/..../..       24 W   AERO 23 W   RMY N/A
02/12  41/30/36/+9/0.00/0.0/..../..        37 W   AERO 36 W   RMY N/A
02/13  35/31/34/+6/.00/0.0/..../..         29 SSW AERO 29 SSW RMY N/A
02/14  33/8/21/-7/0.00/0.0/..../..         32 WNW AERO 32 NW  RMY 34
02/15  27/4/16/-12/0.00/0.0/..../..        31 SSW AERO 31 SSW RMY N/A
02/16  40/23/32/+4/0.00/0.0/..../..        38 SW  AERO 38 SW  RMY N/A
02/17  44/28/36/+8/0.00/0.0/..../..        25 WNW AERO 24 WNW RMY 24
02/18  37/27/32/+3/0.31/T/..../..          26 SE  AERO 26 SE  RMY N/A
02/19  42/25/34/+5/0.00/0.0/..../..        45 W   AERO 46 W   RMY 44
02/20  31/18/25/-4/0.00/0.0/..../..        32 W   AERO 32 W   RMY N/A
02/21  30/11/21/-8/0.00/0.0/..../..        24 NNW AERO 21 N   RMY N/A
02/22  44/23/34/+5/0.00/0.0/..../..        26 W   AERO 24 W   RMY 27
02/23  53/30/42/+12/0.00/0.0/..../..       21 SW  AERO 22 WSW RMY 23
02/24  60/32/46/+16/0.00/0.0/..../..       29 S   AERO 29 SSW RMY 31
02/25  53/40/47/+17/..../0.0/..../..       17 NE  AERO 18 ENE RMY 17
02/26  45/39/42/+12/.../0.0/..../..        23 ENE AERO 24 E   RMY N/A
02/27  49/27/38/+7/0.00/0.0/..../..        51 W   AERO 53 W   RMY 52
02/28  36/25/31/0/0.00/0.0/.../...         38 SW  AERO 38 SW  RMY 36
02/29  35/19/27/-4/0.00/0.0/.../..         32 W   AERO 32 W   RMY 34

03/01 The low since midnight is 15F, daily normal minimum is 22F 


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

RECORDS FOR MARCH 1
HIGH 62 IN 1972
LOW -3 IN 1886
PRECIP 1.65 INS. IN 1900
SNOWFALL 9.4 INS. IN 1949
PEAK GUST 78 WSW IN 1966

RECORDS FOR MARCH 2
HIGH 63 IN 2004
LOW -3 IN 1886
PRE 3.47 INS. IN 2018
SNOW 8.2 INS. IN 2009
WIND 75 MPH NW IN 1966

TODAY'S REPORT PREPARED BY: Benjamin Turner