Saturday, January 16, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, JANUARY 16, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0710E
SUNSET: 1638E
RAIN AND WIND THIS MORNING CLEARING UP
IN THE AFTERNOON HOURS…
Today we measured a storm total of 1.36 inches, being all
rain on January 16th! Some thunder was heard this morning
before 7 A.M., but none after that. Wind was high, at an
average of 30 mph and a max gust around 48 mph. Visibility
was limited for most of the day, but after the rain stopped
we’re seeing almost 50 miles.
Temperatures are continuing to be warmer than normal, especially
the overnight lows.
The high temperature so far today is 50F, 17 degrees above the
daily normal maximum of 33F. The low since midnight is 36F,
19 degrees above the normal minimum of 17F.
Today’s Observations:
7 A.M.
Weather: Rain, thunder between 6:25 A.M. and 6:45 A.M.
Temperature: 42F; Dew Point: 42F; Relative Humidity: 100%
Wind: N @ 7 kts, peak wind of 45 mph at 6:01 A.M.
Sea-level pressure: 29.60 in Hg; falling rapidly
Visibility: 1/2 mile, fog
6-hr Max temp: 42F
6-hr Min temp: 37F
24-hr Precip: 0.36 ins.
24-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 X W3 1/2RF 025/42/42/1023G34/960/ RCTD TSB25E45 PK WND
0938/01/ 8//// 70036 58045 10042 20037
10 A.M.
Weather: Overcast stratus, rain
Temperature: 46F; Dew Point: 46F; Relative Humidity: 100%
Wind: ESE @ 27G42 kts, peak wind of 48 mph at 9:50 A.M.
Sea-level pressure: 29.41 in Hg; falling rapidly
Visibility: 10 miles, fog
3-hr Precip: 0.00 ins.
3-hr Snow: 0.0 ins.
BHO SA 1455 10 OVC 1RF 959/46/46/1227G42/941/ RCTD PK WND
1242/50/ 8/6// 6059/ 56066
1 P.M.
Weather: Overcast stratocumulus with a small break to the
southeast, rain ending at 12:15 P.M.
Temperature: 50F, Dew point: 50F; Relative Humidity: 100%
Wind: S @ 13G20 kts
Sea-level pressure: 29.27 inches Hg, falling, then more slowly
Visibility: 5 miles, fog
6-hr Max temp: 50F
6-hr Min temp: 41F
6-hr Precip: 1.00 ins.
6-hr Snow: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 20 OVC 5RF 911/50/50/1713G20/927/ BINOVC SE RE15/
8/8// 6100/ 56048 10050 20041
SUMMARY FOR FRIDAY, JANUARY 15, 2021
TEMPERATURE (DEGREES F)
MAX…….40 NORMAL…..33
MIN…….32 NORMAL…..17
MEAN……36 NORMAL…..25
DEPARTURE FROM 30-YEAR (1981-2010) NORMAL…….+11
TOTAL DEPARTURE FOR THE MONTH……………….+98 [+6.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………29 DEPARTURE……-11
TOTAL HEATING UNITS FOR THE MONTH…………..491 DEPARTURE……-96
TOTAL HEATING UNITS FOR THE SEASON…………2421 DEPARTURE…..-471
TOTAL HEATING UNITS LAST SEASON TO DATE…….2669 DEPARTURE…..-248
PEAK WIND GUST (MPH):
420C/Official…………..25 ESE @ 11:37 P.M.
AEROVANE (south tower)…..23 ESE @ 11:53 P.M.
ASOS…………………..25 E @ 11:43 P.M.
DAVIS #1……………….26 E @ 11:41 P.M.
DAVIS #2 (south tower)…..25 ESE @ 11:54 P.M.
RMY……………………27 @ 11:38 P.M.
VECTOR…………………28 @ 11:38 P.M.
MERLIN…………………N/A
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 ESE @ 11:46 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….18 E @ 11:50 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 ESE @ 11:50 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 E @ 11:54 P.M.
MAXIMUM 2-MINUTE RMY AVERAGE………………..19 SE @ 11:48 P.M.
MAXIMUM 2-MINUTE VECTOR AVERAGE……………..19 @ 11:48 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL… 7.8 E [188 total miles]
ASOS……………… 8.5 [198 total miles]
DAVIS #1………….. 8.5 E [198 total miles]
DAVIS #2………….. 8.3 ENE [198 total miles]
RMY………………. 8.3 E [198 total miles]
VECTOR……………. 8.6 [198 total miles]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.36 DEPARTURE….+0.19
ASOS………….0.36
TOTAL PRECIPITATION FOR THE MONTH………….0.94 DEPARTURE….-1.20
ASOS………….0.94
TOTAL PRECIPITATION FOR THE YEAR…………..0.94 DEPARTURE….-1.20
ASOS…………0.94
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HOURS ENDING 7 A.M………..0.0 DEPARTURE…..-0.6
TOTAL SNOWFALL FOR THE MONTH……………… 1.9 DEPARTURE…..-6.6
TOTAL SNOWFALL FOR THE SEASON……………..28.1 DEPARTURE…..+3.6
PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
01/01 36/25/31/+4/0.06/0.3/330/60 23 E AERO 23 NNW RMY 23
01/02 43/30/37/+10/0.30/T/116/21 37 WNW AERO 39 WNW RMY 44
01/03 33/27/30/+4/0.07/0.8/000/00 23 NNE AERO 22 NNE RMY 25
01/04 37/28/33/+7/0.01/0.1/110/20 25 NNE AERO 23 NNE RMY 27
01/05 31/28/30/+4/0.05/0.7/000/00 21 NNW AERO 21 NNW RMY 22
01/06 38/28/33/+7/T/T/244/44 30 NW AERO 29 NW RMY 32
01/07 42/26/34/+8/0.00/0.0/516/93 28 NNW AERO 26 NNW RMY 31
01/08 40/21/31/+5/0.00/0.0/517/93 25 NNW AERO 22 NNW RMY 25
01/09 34/30/27/+1/0.00/0.0/395/71 25 N AERO 23 N RMY 24
01/10 39/24/32/+7/0.00/0.0/493/88 25 NNW AERO 23 NNW RMY 24
01/11 34/25/30/+5/0.00/0.0/000/00 17 SW AERO 16 SSW RMY 16
01/12 40/24/32/+7/0.00/0.0/…/.. 23 WNW AERO 23 WNW RMY 24
01/13 40/26/33/+8/0.00/0.0/…/.. 15 SW AERO 14 SW RMY 19
01/14 38/31/35/+10/0.09/T/…/.. 16 SSW AERO 16 SSW RMY 19
01/15 40/32/36/+11/0.00/0.0/…/.. 25 ESE AERO 23 ESE RMY 27
01/16 The low since midnight is 36F, the daily normal low is 17F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JANUARY 16
HIGH 63F IN 1995
LOW -12F IN 2004
PRECIP 1.32 INS. IN 1936
SNOWFALL 14.0 INS. IN 1965
PEAK GUST 79 MPH WNW IN 1960
RECORDS FOR JANUARY 17
HIGH 55F IN 1973,1995
LOW -8F IN 1907,1982
PRECIP 1.43 INS. IN 1956
SNOWFALL 13.4 INS. IN 1956
PEAK GUST 62 MPH S IN 1994
TODAY’S REPORT PREPARED BY: Benjamin Turner
