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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, MARCH 25, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
SOME LIGHT RAIN WITH OVERCAST SKIES AND A
CHILLY EASTERLY WIND….
Today we observed 30 miles of visibility on average due to
a distant fog. Light rain began shortly before 7 A.M.,
leaving 0.03 inches in the gauge by the 10 A.M. observation.
Skies remained overcast, and the wind was easterly at a
constant speed around 10 mph. However, the wind picked up
slightly as the afternoon went on, gusting up to 23 mph by
5 P.M.
The overnight low was 35F, this is 5 degrees above the normal
low of 30F. The high so far today is 41F, 6 degrees above the
normal max of 47F.
Today’s Observations:
7 A.M.
Weather: Overcast stratus, light rain beginning 5 minutes
before the 7 A.M. observation.
Temperature: 37F; Dew Point: 32F; Relative Humidity: 82%
Wind: E at 8 kts
Sea-level pressure: 30.21 ins. Hg: rising, then more slowly
Visibility: 35 miles, distant fog
6-hr Max temp: 37F
6-hr Min temp: 35F
24-hr Precip: Trace
24-hr Snowfall: 0.0 ins.
BHO SA 1155 E50 OVC 35R- 229/37/32/0810/021/ DSNT FG ALQDS R-B55/
8/6// 53012 10037 20035
10 A.M.
Weather: Overcast stratus, light rain
Temperature: 38F; Dew Point: 36F; Relative Humidity: 96%
Wind: E at 8 kts
Sea-level pressure: 30.19 ins. Hg: falling, then more rapidly
Visibility: 30 miles, distant fog
3-hr Precip: 0.03 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E50 OVC 30R- 222/38/36/0908/019/ DSNT FG ALQDS R-CTD/
8/6// 6003/ 56007
1 P.M.
Weather: Overcast altostratus
Temperature: 39F; Dew Point: 31F; Relative Humidity: 71%
Wind: E at 12 kts,
Sea-level pressure: 30.17 ins. Hg: steady, then falling
Visibility: 30 miles, distant fog
6-hr Max temp: 41F
6-hr Min temp: 37F
6-hr Precip: 0.03 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 E150 OVC 30 217/39/31/1012/017/ DSNT FG ALQDS/
8/02/ 6003/ 55006 10041 20037
SUMMARY FOR TUESDAY, MARCH 24, 2020
TEMPERATURE (DEGREES F)
MAX…..48 NORMAL…..47
MIN…..33 NORMAL…..30
MEAN….41 NORMAL…..38
DEPARTURE FROM 30-YEAR NORMAL………………. +3
TOTAL DEPARTURE FOR THE MONTH………………+170 [+6.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………24 DEPARTURE……. -3
TOTAL HEATING UNITS FOR THE MONTH…………..566 DEPARTURE……-170
TOTAL HEATING UNITS FOR THE SEASON…………4706 DEPARTURE……-598
TOTAL HEATING UNITS LAST SEASON TO DATE…….5249 DEPARTURE……-543
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..37 NNW AT 12:10 A.M.
AERO…………………….37 NNW AT 12:12 A.M.
ASOS…………………….39 NNE AT 12:11 A.M.
DAVIS……………………38 NNW AT 12:03 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….25 NNW AT 12:08 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….25 NNE AT 12:08 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………25 NNE AT 12:14 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.3 NNW
ASOS…………………..10.7
DAVIS………………….11.5 NNW [340 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.19
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.46 DEPARTURE……-0.84
ASOS…………..3.59
TOTAL PRECIPITATION FOR THE YEAR………..8.12 DEPARTURE……-4.60
ASOS…………..8.50
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.3
TOTAL SNOWFALL FOR THE MONTH…………….2.8 DEPARTURE…….-7.9
TOTAL SNOWFALL FOR THE SEASON…………..27.6 DEPARTURE……-30.1
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 33/15/24/-7/0.00/0.0/…/.. 28 WNW AERO 28 WNW RMY 27
03/02 52/24/38/+7/T/T/…/.. 40 S AERO 39 S RMY 41
03/03 64/45/55/+23/…./0.0/…/.. 30 S AERO 30 S RMY N/A
03/04 50/38/44/+12/…./0.0/…/.. 56 W AERO 56 W RMY 58
03/05 51/32/42/+10/0.00/0.0/…/.. 31 W AERO 31 NW RMY 32
03/06 47/30/39/+7/…./…/…/.. 46 NE AERO 45 NE RMY 46
03/07 43/26/35/+2/…./…/…/.. 42 N AERO 43 N RMY 44
03/08 53/26/40/+7/0.00/0.0/…/.. 31 W AERO 30 W RMY 28
03/09 72/40/56/+23/0.00/0.0/…/.. 32 SW AERO 32 SW RMY 31
03/10 68/49/59/+26/0.00/0.0/…/.. 48 WSW AERO 46 WSW RMY 49
03/11 56/37/47/+13/0.00/0.0/…/.. 31 WNW AERO M M RMY 21
03/12 46/31/39/+5/…./0.0/…/.. 21 SE AERO 18 SE RMY N/A
03/13 59/38/49/+15/…./0.0/…/.. 46 WNW AERO 44 WNW RMY 46
03/14 51/35/43/+8/0.00/0.0/…/.. 37 W AERO 36 W RMY 35
03/15 47/28/38/+3/0.00/0.0/…/.. 28 NW AERO 28 NW RMY N/A
03/16 36/22/29/-6/0.00/0.0/…/.. 21 NE AERO 21 ESE RMY 21
03/17 43/28/36/0/…./0.4/…/.. 29 W AERO 30 W RMY 29
03/18 54/31/43/+7/…./0.0/…/.. 26 S AERO 26 S RMY 26
03/19 43/37/40/+4/…./0.0/…/.. 36 E AERO 35 E RMY 34
03/20 66/37/52/+15/…./0.0/…/.. 48 W AERO 48 W RMY 46
03/21 55/29/42/+5/0.00/0.0/…/.. 45 W AERO 48 W RMY N/A
03/22 36/23/30/-7/0.00/0.0/…/.. 23 NE AERO 24 NE RMY 23
03/23 40/25/33/-5/…./1.6/…/.. 38 NNE AERO 39 NNE RMY 38
03/24 48/33/41/+3/…./…/…/.. 37 NNW AERO 37 NNW RMY N/A
03/25 The low since midnight is 35F, daily normal minimum is 30F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR MARCH 25
HIGH 76 IN 1910
LOW 8 IN 1888, 1956
PRECIP 1.84 INS. IN 1909
SNOWFALL 1.0 INS. IN 1912
PEAK GUST 69 MPH SE IN 1969
RECORDS FOR MARCH 26
HIGH 76 IN 1922, 1949
LOW 6 IN 1960
PRECIP 1.99 INS. IN 1988
SNOWFALL 5.4 INS. IN 2001
PEAK GUST 63 MPH S IN 1970
TODAY’S REPORT PREPARED BY: Benjamin Turner
