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

MONDAY, MARCH 1, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0619E
SUNSET:  1734E

AN OVERCAST AND DAMP START TO MARCH....

Light rain began late last evening and continued into this 
morning before a break in the action. Rainfall totaled 0.13"
overnight through 10 A.M. Light rain has started up once 
again early this afternoon, thus we'll likely see additional
measurable amounts this afternoon.

We've been stuck in the clouds all day with visibility only
around 1/16th of a mile from mid morning into early this
afternoon, however has been showing signs of improvement in
the 1 P.M. observation.

The high so far today is 42F, 2 degrees above the daily  
average max of 40F. The low since midnight is 35F, 13 degrees 
above the daily average low of 22F.


Today's Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 200 feet, light rain
Temperature: 41F; Dew Point: 41F; Relative Humidity: 100%
Wind: S @ 5 kts, wind light
Sea-level pressure: 29.65 in Hg; falling, then more rapidly
Visibility: 1/4 mile, fog
6-hr Max temp: 41F
6-hr Min temp: 36F
24-hr Precip: 0.12 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 4 ins.
BHO SA 1155 X W2 1/4R-F 039/41/41/1805/965/ WND LGT/ 8//// 4/004 58039 6010/ 70012 10041 20036 

10 A.M.
Weather: Sky obscured, vertical visibility 100 feet
Temperature: 39F; Dew Point: 39F; Relative Humidity: 100%
Wind: WSW @ 8 kts
Sea-level pressure: 29.55 in Hg; falling, then more rapidly
Visibility: 1/16 mile, fog
3-hr Precip: 0.01 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 X W1 1/16F 005/39/39/2508/955/ R-E30/ 8//// 58034 6001/

1 P.M.
Weather: Sky obscured, vertical visibility 200 feet, light rain
Temperature: 39F, Dew point: 39F; Relative Humidity: 100%
Wind: W @ 14G20 kts
Sea-level pressure: 29.47 in Hg; falling, then more slowly
Visibility: 3/4 mile, fog
6-hr Max temp: 42F
6-hr Min temp: 38F
6-hr Precip: 0.01 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 3 ins.
BHO SA 1755 X W2 3/4R-F 981/39/39/2814G20/947/ L-B25E46R-B46/
8//// 4/003 56024 6001/ 10042 20038

SUMMARY FOR SUNDAY, FEBRUARY 28, 2021

TEMPERATURE (DEGREES F)
MAX.......41   NORMAL.....40
MIN.......33   NORMAL.....22
MEAN......37   NORMAL.....31

DEPARTURE FROM 30-YEAR (1981-2010) NORMAL....... +6
TOTAL DEPARTURE FOR THE MONTH...................+34 [+1.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............28  DEPARTURE...... -6
TOTAL HEATING UNITS FOR THE MONTH.............1001  DEPARTURE......-36
TOTAL HEATING UNITS FOR THE SEASON............4045  DEPARTURE.....-523
TOTAL HEATING UNITS LAST SEASON TO DATE.......4102  DEPARTURE......-57

PEAK WIND GUST (MPH):
                     420C/Official..............24 NW  @ 12:16 A.M.
                     AEROVANE (south tower).....22 NW  @ 12:08 A.M.
                     ASOS.......................22 WNW @ 12:08 A.M.
                     DAVIS #1...................23 WNW @ 12:08 A.M.
                     DAVIS #2 (south tower).....24 NW  @ 12:16 A.M.
                     RMY........................25     @ 12:07 A.M.
                     VECTOR.....................24     @ 12:25 A.M.
                     MERLIN.....................N/A

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL..................16 SE  @  7:10 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...................16 SE  @  7:18 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............17 SE  @  7:18 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............17 NW  @ 12:09 A.M.
MAXIMUM 2-MINUTE RMY AVERAGE....................16 SSE @  7:15 P.M.
MAXIMUM 2-MINUTE VECTOR AVERAGE.................17     @  7:15 P.M.

AVERAGE WIND SPEED AND DIRECTION:
                     CONTACTING/OFFICIAL...... 7.8 SE  [188 total miles]
                     ASOS..................... 7.7     
                     DAVIS #1................. 8.4 WSW  
                     DAVIS #2................. 8.4 WSW  
                     RMY...................... 7.8 WSW
                     VECTOR................... 8.3

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.12  DEPARTURE....-0.06
                             ASOS.............0.12
TOTAL PRECIPITATION FOR THE MONTH.............0.11  DEPARTURE....-0.07
                             ASOS.............0.11
TOTAL PRECIPITATION FOR THE YEAR..............8.11  DEPARTURE....-0.49
                              ASOS............8.37

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M...........0.0  DEPARTURE.... -0.5
TOTAL SNOWFALL FOR THE MONTH.................. 0.0  DEPARTURE.... -0.5
TOTAL SNOWFALL FOR THE SEASON.................72.4  DEPARTURE....+25.4


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   32/21/27/+1/1.86/12.7/000/00      53 NE   AERO 65 NE   RMY 62
02/02   34/29/32/+6/0.91/1.6/000/00       52 NNE  AERO 55 NE   RMY 58
02/03   34/26/30/+4/0.01/0.2/036/06       20 NW   AERO 20 NW   RMY 22
02/04   37/26/32/+6/0.02/0.7/158/26       23 NW   AERO 22 NW   RMY M       
02/05   39/26/33/+7/0.01/T/000/00         33 S    AERO 32 S    RMY 30
02/06   40/28/34/+8/0.00/0.0/595/97       42 WSW  AERO 41 WSW  RMY 47
02/07   35/25/30/+3/0.71/11.6/000/00      27 WNW  AERO 28 WNW  RMY 30
02/08   27/13/20/-7/0.00/0.0/619/100      29 NW   AERO 31 WNW  RMY 32
02/09   27/18/23/-4/0.17/2.2/000/00       16 N    AERO 16 N    RMY 17
02/10   31/15/23/-4/0.00/0.0/436/70       26 WNW  AERO 25 WNW  RMY 28
02/11   31/15/23/-4/0.00/0.0/526/84       28 NW   AERO 26 NW   RMY 31
02/12   25/8/17/-10/0.00/0.0/421/67       32 NW   AERO 35 NW   RMY 36
02/13   27/15/21/-7/0.00/0.0/252/40       20 NNW  AERO 20 NNW  RMY 23
02/14   34/24/29/+1/0.00/0.0/000/00       19 ENE  AERO 16 ENE  RMY 19
02/15   31/27/29/+1/0.11/0.0/000/00       21 NNE  AERO 21 NNE  RMY 22
02/16   44/29/37/+9/0.63/0.0/000/00       39 W    AERO 41 W    RMY 43
02/17   30/19/25/-3/0.00/0.0/552/86       40 W    AERO 41 WNW  RMY 40
02/18   29/21/25/-4/0.13/1.7/000/00       24 ENE  AERO 24 ENE  RMY 25
02/19   30/24/27/-2/0.66/7.7/000/00       24 NE   AERO 23 NE   RMY 24
02/20   32/19/26/-3/0.02/0.5/156/24       32 NW   AERO 35 NW   RMY 38
02/21   33/15/24/-5/0.00/0.0/653/100      27 NW   AERO 28 NW   RMY 29
02/22   40/21/31/+2/0.22/T/020/03         41 S    AERO 41 SSE  RMY 44
02/23   43/31/37/+7/0.00/0.0/.../..       31 WNW  AERO 31 WNW  RMY 32
02/24   49/34/42/+12/0.00/0.0/.../..      39 SSW  AERO 39 SSW  RMY 42
02/25   43/28/30/+6/0.00/0.0/.../..       50 WNW  AERO 55 WNW  RMY 57
02/26   40/22/31/+1/0.00/0.0/.../..       22 WNW  AERO 22 WNW  RMY 21
02/27   47/29/38/+7/0.21/0.1/.../..       40 SSE  AERO 41 SSE  RMY 44
02/28   41/33/37/+6/0.01/0.0/.../..       24 NW   AERO 22 NW   RMY 25

03/01 The low since midnight is 35F, the daily normal low is 22F

DAILY RECORDS

02/01 -RECORD SNOWFALL OF 12.7 INS, BREAKING PREVIOUS RECORD
       OF 11.0 INS SET IN 1898
02/01 -RECORD PRECIPITATION OF 1.86 INS, BREAKING PREVIOUS 
       RECORD OF 1.30 INS SET IN 1898 

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: Matt Douglas