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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, APRIL 16, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
VERY DRY CONDITIONS WITH A MOSTLY CLEAR SKY TODAY…
A brisk wind is providing a chilly feel today despite
the temperature rising from a low of 39 to the low
50s early this afternoon. There has also been full
sunshine all day with only high thin cirrus clouds
covering part of the sky. A few distant cumulus to
the southeast were one sign of a storm swirling far
out over the ocean. The other sign is the brisk wind
today with frequent gusts over 30 mph from the NNE
and NW. The dew point climbed from the teens to the
upper 20s today, which kep the relative humidity
near 40% much of the day. A brush fire was visible
for a time earlier this afternoon about 8 miles
to the west of the Observatory.
Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus, few lower dense cirrus
Temperature: 42F; Dew Point: 18F; Wind: N at 13G24 kts,
Wind: Peak gust 27 kts,N at 6:19 AM EST
Sea-level pressure: 30.47 ins. Hg, rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 42F
6-hr Min temp: 39F
24-hr precip: 0.00 ins.
BHO SA 1155 250 -SCT 70 317/42/18/0113G24/047/ FEW LWR
DNS CI PK WND 0127/19/ 8/001 51012 10042 20039
10 A.M.
Weather: Thin broken cirrus, few small cumulus distant E-S,
few lower dense cirrus
Temperature: 46F; Dew Point: 28F; Wind: NE at 13G25 kts,
Wind: Peak gust 28 kts, NNE at 9:18 AM EST
Sea-level pressure: 30.49 ins. Hg, rising
Visibility: 75 miles
BHO SA 1455 250 -BKN 75 324/46/28/0413G25/049/ FEW SML
CU DSNT E-S FEW LWR DNS CI E-SE PK WND 0328/18/ 8/101
51007
1 P.M.
Weather: Thin broken cirrus, few cumulus distant E-SSE,
few lower dense cirrus
Temperature: 49F; Dew Point: 27F; Wind: NE at 17G25 kts,
Wind: Peak gust 28 kts NE at 12:00 PM EST
Sea-level Pressure: 30.48 ins. HG, falling
Visibility: 70 miles,
6-hr Max temp: 51F
6-hr Min temp: 42F
BHO SA 1755 250 -BKN 70 321/49/27/0517G25/048/ FEW CU DSNT
E-SSE FEW LWR DNS CI SE-S PK WND 0428/1700/ 8/101 55003
10051 20042
SUMMARY FOR FRIDAY, APRIL 15, 2016
TEMPERATURE (DEGREES F)
MAX…..54 NORMAL…..56
MIN…..35 NORMAL…..38
MEAN….45 NORMAL…..47
DEPARTURE FROM 30-YEAR NORMAL…………………….-2
TOTAL DEPARTURE FOR THE MONTH……………………-42 [-3.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..20 DEPARTURE……….+2
TOTAL HEATING UNITS FOR THE MONTH………….360 DEPARTURE………+42
TOTAL HEATING UNITS FOR THE SEASON………..4779 DEPARTURE…….-1023
TOTAL HEATING UNITS LAST SEASON TO DATE……6043 DIFFERENCE……-1264
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….26 NNE AT 10:38 A.M.
ASOS……………………25 NE AT 10:38 A.M.
DAVIS…………………..24 N AT 10:38 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………18 NNE AT 11:28 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………17 NNE AT 11:31 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..16 NNE AT 9:11 A.M.
AVERAGE WIND SPEED AND DIRECTION……………11,3 NE
ASOS……………………11.5
DAVIS…………………..9.6 NNE [25 Deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.54 DEPARTURE……+1.03
ASOS…………..3.83
TOTAL PRECIPITATION FOR THE YEAR……….16.12 DEPARTURE……-0.39
ASOS………….16.84
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.1
TOTAL SNOWFALL FOR THE MONTH……………15.0 DEPARTURE……+12.8
TOTAL SNOWFALL FOR THE SEASON…………..57.5 DEPARTURE…….-4.9
PRELIMINARY CLIMATE SUMMARY FOR APRIL CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
4/1 66/54/60/+19/…./0.0/092/12 39 SSW AERO N/A RMY 43
4/2 54/40/47/+6/…./0.0/023/03 23 SSW AERO N/A RMY N/A
4/3 40/23/32/-10/…./7.7/354/46 46 W AERO N/A RMY 55
4/4 28/21/25/-17/0.68/7.3/000/00 29 NNE AERO N/A RMY 25
4/5 35/19/27/-16/0.00/0.0/660/85 25 NW AERO N/A RMY 27
4/6 41/21/31/-12/…./0.0/483/62 44 S AERO N/A RMY N/A
4/7 56/41/49/+6/…./0.0/000/00 53 SSE AERO 59 SSE RMY 55
4/8 52/32/42/-2/T/0.0/353/45 41 WSW AERO 45 WSW RMY 42
4/9 47/29/38/-6/0.00/0.0/417/53 33 NW AERO 39 NW RMY 32
4/10 49/26/38/-7/0.01/0.0/735/93 30 NW AERO 32 NW RMY 31
4/11 58/40/49/+4/0.00/T/182/23 47 S AERO 52 S RMY N/A
4/12 59/37/48/+3/0.30/0.0/040/05 53 S AERO 60 S RMY 54
4/13 53/33/43/-3/0.00/0.0/798/100 21 NNW AERO 25 NNW RMY 21
4/14 48/33/41/-5/0.00/0.0/793/99 28 ENE AERO 28 NNE RMY 26
4/15 54/35/45/-2/0.00/0.0/804/100 26 NNE AERO 28 NNE RMY N/A
4/16 low temp since midnight is 39F; normal now 38F
DAILY RECORDS FOR APRIL 2016
4/1/16: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 54F,
BREAKS PREVIOUS RECORD OF 51F SET IN 1948
4/4/16: NEW DAILY RECORD SNOWFALL OF 7.3 INS,
BREAKS PREVIOUS RECORD OF 3.7 INS SET IN 1975
4/4/16: NEW DAILY RECORD LOW MAXIMUM TEMPERATURE OF 28F,
BREAKS PREVIOUS RECORD OF 32F SET AND TIED IN 1896, 1908, 1975
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR APRIL 16
HIGH 89 IN 2012
LOW 23 IN 1943
PRECIP 2.45 IN. IN 1929
SNOWFALL 2.0 IN. IN 1904, 1962
PEAK GUST 73 MPH E IN 2007
RECORDS FOR APRIL 17
HIGH 93 IN 2002
LOW 21 IN 1908
PRECIP 1.68 IN 1954
SNOWFALL 1.0 IN. IN 1899
PEAK GUST 63 MPH ESE IN 2011
TODAY’S REPORT PREPARED BY: Mike Iacono
