Friday, March 29, 2019
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, MARCH 29, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME
OVERCAST AND MILD WITH SOME SCATTERED AFTERNOON SHOWERS….
With a steady pressure drop throughout the day, light rain
showers have occurred shortly before and following the
1 P.M. observation. Rain measured so far this afternoon
was only a trace. Wind stayed southwesterly and relatively
light, with an occasional gust above 20 mph. Despite the
overcast conditions, the aforementioned warm air advection
from the south have brought today’s temperatures above
seasonal averages. The high temperature so far today is
53F, 4 degrees above the daily normal maximum of 49F. The
low since midnight is 40F, 9 degrees above the normal low
of 31F.
Today’s Observations:
7 A.M.
Weather: Broken altocumulus, overcast cirrostratus
Temperature: 44F; Dew Point: 37F; Wind: SW at 10G14 kts
Sea-level pressure: 30.11 ins. Hg, rising then falling
Visibility: 45 miles, distant haze
6-hr Max temp: 44F
6-hr Min temp: 40F
24-hr Precip: 0.00 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1155 E80 BKN 250 OVC 45 197/44/37/2114G18/011/
DSNT HZ ALQDS/ 8/076 58004 10044 20040
10 A.M.
Weather: Overcast altostratus
Temperature: 49F; Dew Point: 37F; Wind: SW at 12G19 kts
Sea-level pressure: 30.09 ins. Hg, falling steadily
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E110 OVC 70 191/49/37/2112G19/009/ 8/02/
56009
1 P.M.
Weather: Intermittent showers, overcast nimbostratus
Temperature: 50F; Dew Point: 40F; Wind: SW at 9G12 kts
Sea-level pressure: 30.06 ins. Hg, falling steadily
Visibility: 40 miles, distant fog in all directions
6-hr Max temp: 53F
6-hr Min temp: 44F
6-hr Precip: Trace
6-hr snowfall: 0.0 ins.
BHO SA 1755 E65 OVC 40 183/50/40/2109G12/006/ DSNT FG
ALQDS RW-BUKNEUKN/ 8/02/ 600// 58008 10053 20044
SUMMARY FOR THURSDAY, MARCH 28, 2019
TEMPERATURE (DEGREES F)
MAX…..51 NORMAL…..48
MIN…..28 NORMAL…..31
MEAN….40 NORMAL…..39
DEPARTURE FROM 30-YEAR NORMAL…………………….+1
TOTAL DEPARTURE FOR THE MONTH……………………-34 [-1.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..25 DEPARTURE………-1
TOTAL HEATING UNITS FOR THE MONTH………….875 DEPARTURE……..+34
TOTAL HEATING UNITS FOR THE SEASON………..5361 DEPARTURE……..-48
TOTAL HEATING UNITS LAST SEASON TO DATE……5008 DIFFERENCE……+353
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..35 S AT 4:49 P.M.
AERO…………………….M
ASOS…………………….38 S AT 4:50 P.M.
DAVIS……………………44 S AT 4:49 P.M. RMY 37
FASTEST MILE FOR YESTERDAY………………….30 S AT 4:52 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….28 S AT 4:51 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………31 S AT 4:51 P.M.
AVERAGE WIND SPEED AND DIRECTION………….17.0 S
ASOS………………….16.3
DAVIS…………………17.5 S [183 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……….3.95 DEPARTURE…….-1.10
ASOS…………..3.96
TOTAL PRECIPITATION FOR THE YEAR……….12.91 DEPARTURE…….-0.56
ASOS………….13.03
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…….+11.2
TOTAL SNOWFALL FOR THE SEASON…………..47.6 DEPARTURE…….-11.3
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 Low temp since midnight is 40F; normal low is 31F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR MARCH 29
HIGH 85 IN 1945
LOW -2 IN 1923
PRECIP 2.78 INS. IN 1984
SNOWFALL 13.5 INS. IN 1984
PEAK GUST 95 MPH ENE IN 1984
RECORDS FOR MARCH 30
HIGH 83 IN 1977
LOW 10 IN 1887
PRECIP 2.92 INS. IN 2010
SNOWFALL 3.9 INS. IN 1957
PEAK GUST 60 MPH NW IN 1999
TODAY’S REPORT PREPARED BY: Benjamin Turner
