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

MONDAY, MARCH 22, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0545E
SUNSET:  1759E

THE FAIR WEATHER DAYS CONTINUE....

We observed partly cloudy skies today with a visibility
of 70 miles on average. Mild weather in the region
continues to exist, as well as abundant sunshine.  

Dry conditions continue to be an issue, so a fire risk persists.
The wind is calmer today, with a max gust of around
16 mph early this morning. The monthly precipitation departure
stands at -2.77" and the yearly departure is -3.19".

The high so far today is 60F, which is 14 degrees above the
normal high of 46F. The low since midnight is 36F, which
is 8 degrees above the daily normal low of 28F.


Today's Observations:

7 A.M.
Weather: Broken cirrostratus
Temperature: 43F; Dew Point: 25F; Relative Humidity: 49%
Wind: SSW @ 8 kts
Sea-level pressure: 30.46 in Hg; rising steadily
Visibility: 75 miles
6-hr Max temp: 43F
6-hr Min temp: 36F
24-hr Precip: 0.00 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 250 BKN 75 315/43/25/2108/046/ 8/006 53002 10043
20036

10 A.M.
Weather: Scattered cirrus
Temperature: 52F; Dew Point: 23F; Relative Humidity: 32%
Wind: SW @ 7 kts
Sea-level pressure: 30.46 in Hg; steady
Visibility: 70 miles, thin smoke layer
3-hr Precip: 0.00 ins
3-hr Snow: 0.0 ins.
BHO SA 1455 250 SCT 70 315/52/23/2207/046/ THN K LYR ALQDS/
8/001 50000

1 P.M.
Weather: Scattered cirrus
Temperature: 59F, Dew point: 27F; Relative Humidity: 29%
Wind: SW @ 7 kts
Sea-level pressure: 30.39 in Hg; falling steadily
Visibility: 70 miles
6-hr Max temp: 60F
6-hr Min temp: 43F
6-hr Precip: 0.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 250 SCT 70 290/59/27/2307/039/ 8/001 58025
10060 20043


SUMMARY FOR SUNDAY, MARCH 21, 2021

TEMPERATURE (DEGREES F)
MAX.......62     NORMAL.....46
MIN.......39     NORMAL.....28
MEAN......51     NORMAL.....37

DEPARTURE FROM 30-YEAR (1981-2010) NORMAL....... +14
TOTAL DEPARTURE FOR THE MONTH................... +16 [+0.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............14  DEPARTURE......-14
TOTAL HEATING UNITS FOR THE MONTH..............638  DEPARTURE......-16
TOTAL HEATING UNITS FOR THE SEASON............4683  DEPARTURE.....-539
TOTAL HEATING UNITS LAST SEASON TO DATE.......4615  DEPARTURE......+68

PEAK WIND GUST (MPH):
                     420C/Official..............22 S   @  6:23 P.M.
                     AEROVANE (south tower).....23 S   @  6:14 P.M.
                     ASOS.......................23 S   @  6:16 P.M.
                     DAVIS #1...................23 S   @  6:23 P.M.
                     DAVIS #2 (south tower).....26 SSE @  6:23 P.M.
                     RMY........................25     @  6:22 P.M.
                     VECTOR.....................26     @  6:23 P.M.
                     MERLIN.....................24

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL..................16 S   @  6:21 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...................17 S   @  6:22 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............17 S   @  6:23 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............19 S   @  6:19 P.M.
MAXIMUM 2-MINUTE RMY AVERAGE....................17 S   @  6:15 P.M.
MAXIMUM 2-MINUTE VECTOR AVERAGE.................18     @  6:16 P.M.

AVERAGE WIND SPEED AND DIRECTION:
                     CONTACTING/OFFICIAL.......8.5 SSW [204 total miles]
                     ASOS......................9.2  
                     DAVIS #1..................8.9 WSW  
                     DAVIS #2..................9.4 SSW
                     RMY.......................8.8 S
                     VECTOR....................9.3

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00  DEPARTURE....-0.20
                             ASOS.............0.00
TOTAL PRECIPITATION FOR THE MONTH.............0.94  DEPARTURE....-2.77
                             ASOS.............0.98
TOTAL PRECIPITATION FOR THE YEAR..............8.94  DEPARTURE....-2.19
                              ASOS............9.24

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M.......... 0.0  DEPARTURE.... -0.3
TOTAL SNOWFALL FOR THE MONTH.................. 0.2  DEPARTURE.... -9.5
TOTAL SNOWFALL FOR THE SEASON.................72.6  DEPARTURE....+16.4


PRELIMINARY CLIMATE SUMMARY FOR MARCH 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

03/01   42/24/33/+2/0.13/T/020/03        69 WNW  AERO 78 WNW  RMY 78
03/02   27/10/19/-12/T/0.1/679/100       63 WNW  AERO 71 WNW  RMY 69
03/03   45/19/32/0/0.00/0.0/375/55       30 W    AERO 30 W    RMY 34
03/04   38/22/30/-2/0.00/0.0/520/76      46 NW   AERO 51 NW   RMY 53
03/05   31/18/25/-7/0.00/0.0/549/80      39 WNW  AERO 44 NW   RMY 45
03/06   33/15/24/-8/0.00/0.0/675/98      28 WNW  AERO 29 WNW  RMY 30
03/07   35/15/25/-8/0.00/0.0/686/99      21 NW   AERO 22 NW   RMY 23
03/08   38/19/29/-4/T/T/389/56           20 NW   AERO 20 NW   RMY 21
03/09   56/30/43/+10/T/T/.../..          32 WNW  AERO 35 WNW  RMY 37
03/10   54/32/43/+10/0.00/0.0/.../..     29 SSW  AERO 29 SSW  RMY 31
03/11   71/35/53/+19/0.00/0.0/.../..     41 SSW  AERO 43 SSW  RMY 46
03/12   62/42/52/+18/0.00/0.0/.../..     52 WNW  AERO 59 WNW  RMY 57
03/13   46/27/37/+3/0.00/0.0/.../..      53 WNW  AERO 59 WNW  RMY 57
03/14   45/19/32/-3/0.01/0.1/.../..      51 WNW  AERO 58 NW   RMY 58
03/15   27/12/20/-15/0.00/0.0/.../..     48 NW   AERO 47 NW   RMY 54
03/16   37/13/25/-10/0.00/0.0/.../..     22 NNW  AERO 22 NNW  RMY 23
03/17   52/27/40/+4/0.00/0.0/.../..      28 S    AERO 25 S    RMY 29
03/18   46/34/40/+4/0.80/T/.../..        38 NE   AERO 40 NE   RMY 42
03/19   39/26/33/-3/T/T/.../..           37 N    AERO 38 N    RMY 41
03/20   58/24/41/+4/0.00/0.0/.../..      23 W    AERO 23 W    RMY 27
03/21   62/39/51/+14/0.00/0.0/.../..     22 S    AERO 23 S    RMY 25

03/22 The low since midnight is 36F, the daily normal low is 28F


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

RECORDS FOR MARCH 22
HIGH 81 IN 2012
LOW 3 IN 1885
PRE 3.48 INS. IN 2001
SNOW 8.7 INS. 1967
WIND 84e MPH E IN 1977

RECORDS FOR MARCH 23
HIGH 78 IN 1938
LOW 3 IN 1934
PRE 2.52 INS. IN 2010
SNOW 3.0 INS. IN 1977
WIND 78e MPH W IN 1940

TODAY'S REPORT PREPARED BY: Benjamin Turner