Sunday, March 31, 2019
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, MARCH 31, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME
WARM DAY WITH DROPPING PRESSURE AND RAIN BEGINNING
IN THE EARLY AFTERNOON….
Today has been much more mild than normal, with a high
temperature of 66F recorded around the 10 o’clock EST
observation. Our normal high temperature for today is 49F.
Since then, temperature has dropped about
10 degrees for the 1 o’clock observation. This morning
started with partly cloudy skies with fair visibility,
which has been reduced to less than half by the 1
o’clock observation, as clouds and rain move into the
area. Humidity has been fluctuating, dropping through
the morning, but increasing quickly into the early
afternoon. Pressure has dropped a total of 5.2 millibars
between 7 A.M. and 1 P.M. EST.
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, broken altocumulus, broken
cirrostratus
Temperature: 55F; Dew Point: 48F; Wind: SSE at 18G25 kts
Sea-level pressure: 29.80 ins. Hg, falling then more slowly
Visibility: 70 miles, distant haze in all directions
6-hr Max temp: 55F
6-hr Min temp: 52F
24-hr Precip: 0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1155 E18 BKN E150 BKN E250 BKN 70 090/55/48/1618G25/980/
DSNT HZ ALQDS/ 8/498 56015 10055 20052
10 A.M.
Weather: Scattered cumulus, scattered cirrostratus
Temperature: 58F; Dew Point: 49F; Wind: SSE at 28G42 kts
Peak wind: 46 kts SW at 9:53 A.M.
Sea-level pressure: 29.69 ins. Hg, falling, then more quickly
Visibility: 70 miles, distant haze in all directions
3-hr Precip: 0.00 ins.
BHO SA 1455 14 SCT 250 SCT 70 053/58/49/1628G42/969/ DSNT HZ ALQDS
PK WND 1646/33// 8/108 58037
1 P.M.
Weather: Overcast stratus
Temperature: 55F; Dew Point: 51F; Wind: S at 19G30 kts
Sea-level pressure: 29.64 ins. Hg, falling then more slowly
Visibility: 20 miles, distant haze in all directions
6-hr Max temp: 66F
6-hr Min temp: 55F
6-hr Precip: trace
6-hr snowfall: 0.0 ins.
BHO SA 1755 E14 OVC 20 038/55/51/2019G30/964/ DSNT HZ ALQDS PK
WND 1836/30// 8/6// 56015 600// 10066 20055
SUMMARY FOR SATURDAY, MARCH 30, 2019
TEMPERATURE (DEGREES F)
MAX…..67 NORMAL…..49
MIN…..40 NORMAL…..31
MEAN….54 NORMAL…..40
DEPARTURE FROM 30-YEAR NORMAL……………………+14
TOTAL DEPARTURE FOR THE MONTH……………………-13 [-0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..11 DEPARTURE……..-14
TOTAL HEATING UNITS FOR THE MONTH………….904 DEPARTURE……..+13
TOTAL HEATING UNITS FOR THE SEASON………..5390 DEPARTURE……..-69
TOTAL HEATING UNITS LAST SEASON TO DATE……5039 DIFFERENCE……+351
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..44 S AT 3:37 P.M.
AERO…………………….M
ASOS…………………….46 S AT 3:38 P.M.
DAVIS……………………50 S AT 11:44 P.M. RMY 46
FASTEST MILE FOR YESTERDAY………………….36 S AT 3:36 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….33 S AT 3:38 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………33 SSE AT 3:38 P.M.
AVERAGE WIND SPEED AND DIRECTION………….15.3 S
ASOS………………….15.6
DAVIS…………………15.4 SSE [162 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE…….-0.18
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.97 DEPARTURE…….-1.43
ASOS…………..3.98
TOTAL PRECIPITATION FOR THE YEAR……….12.93 DEPARTURE…….-0.89
ASOS………….13.05
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……..-0.3
TOTAL SNOWFALL FOR THE MONTH……………23.1 DEPARTURE…….+10.7
TOTAL SNOWFALL FOR THE SEASON…………..47.6 DEPARTURE…….-11.8
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 38/17/28/-3/…./…/462/71 16 NNW AERO 13 NNW RMY 22
03/02 31/27/29/-2/…./…/000/00 29 NNE AERO 22 NNE RMY 30
03/03 40/25/33/+1/…./…/354/54 21 ESE AERO 14 ESE RMY N/A
03/04 35/18/27/-5/…./…/126/19 33 W AERO 18 W RMY 32
03/05 29/10/20/-12/0.00/0.0/642/97 28 WNW AERO 12 SW RMY N/A
03/06 24/10/17/-15/0.00/0.0/648/97 40 WNW AERO 25 WNW RMY 41
03/07 26/6/16/-17/0.00/0.0/348/52 35 W AERO 18 W RMY 34
03/08 35/11/23/-10/0.00/0.0/540/80 23 WSW AERO M M RMY M
03/09 43/22/33/0/0.00/0.0/660/98 20 WSW AERO M M RMY N/A
03/10 40/26/33/0/…./…/000/00 32 ESE AERO 23 S RMY 32
03/11 48/33/41/+7/…./…/534/79 40 NW AERO 37 NNW RMY 41
03/12 41/27/34/0/…./…/480/70 32 N AERO 33 N RMY 34
03/13 43/24/34/0/…./…/390/57 18 W AERO 21 W RMY 23
03/14 48/32/40/0/…./…/114/17 25 S AERO 28 S RMY M
03/15 58/40/49/+14/0.12/0.0/000/00 37 SSW AERO 38 SSW RMY 39
03/16 50/31/41/+6/0.00/0.0/672/97 45 W AERO 46 W RMY 48
03/17 40/26/33/-3/0.00/0.0/570/82 40 WNW AERO M M RMY N/A
03/18 41/22/32/-4/0.00/0.0/702/100 29 W AERO M M RMY 30
03/19 44/25/35/-1/0.00/0.0/570/81 25 W AERO M M RMY N/A
03/20 50/27/39/+2/0.00/0.0/…/.. 26 S AERO M M RMY 29
03/21 50/33/42/+5/…./…/…/.. 25 SSE AERO M M RMY 46
03/22 39/34/37/0/…./…/…/.. 40 W AERO M M RMY 44
03/23 45/28/37/-1/0.00/0.0/…/.. 45 WNW AERO M M RMY 50
03/24 56/29/43/+5/0.00/0.0/…/.. 28 W AERO M M RMY 30
03/25 49/32/41/+3/0.00/0.0/…/.. 25 NNW AERO M M RMY N/A
03/26 43/27/35/-4/0.00/0.0/…/.. 28 NW AERO M M RMY 28
03/27 42/24/33/-6/0.00/0.0/…/.. 21 S AERO M M RMY 23
03/28 51/28/40/+1/0.00/0.0/…/.. 35 S AERO M M RMY 37
03/29 53/40/47/+7/0.02/0.0/…/.. 26 SSW AERO M M RMY 27
03/30 67/40/54/+14/0.00/0.0/…/.. 44 S AERO M M RMY 46
03/31 Low temp since midnight is 52F; normal low is 32F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR MARCH 31
HIGH 89 IN 1998 [RECORD HIGH FOR MONTH]
LOW 16 IN 1923
PRECIP 2.89 IN 1987
SNOWFALL 15.0 IN 1997
PEAK GUST 81 MPH SSE IN 1987
RECORDS FOR APRIL 1
HIGH 74 IN 1967
LOW 6 IN 1923 [RECORD FOR MONTH]
PRECIP 3.47 IN. IN 2004 [RECORD FOR MONTH]
SNOWFALL 15.0 IN. IN 1997 [RECORD FOR MONTH]
PEAK GUST 75 MPH SSW IN 1962
TODAY’S REPORT PREPARED BY: Samantha Richard
