BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, FEBRUARY 2, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
MILD DAY WITH PARTLY SUNNY SKIES
Temperatures continue to be slightly warmer than normal
reaching 37F by the 1:00PM observation from an overnight
low of 26F. Above freezing temperatures have helped to
decrease snow cover to just a trace from Tuesday evening’s
snowfall. Skies were partly cloudy with cumulus and alto-
cumulus, and visibility remained at 70 miles during each ob.
PRELIMINARY STATS FOR JANUARY 2017
TEMPERATURE, Deg. F
Avg. Max. 38.9 [+5.1]
Avg. Min. 26.4 [+9.3]
Mean 32.7 [+7.2]
24-hour corrected mean: 32.7
Max. for month: 59F on 12th
Min. for month: 4F on 9th
HEATING DEGREE DAYS
Total heating units: 995 [-231]
Total for the season: 3027 [-504]
Total for last season: 2742
PRECIPITATION, Inches
Total: 5.50 [+1.15]
Greatest in 24 hrs: 1.87 on the 23-24th
SNOWFALL, Inches
Total: 13.0 [-4.1]
Greatest in 24 hrs: 9.5 in. on 7-8th
WIND, mph
Avg. uncorrected wind speed: 13.1
Avg. corrected wind speed: 13.5
Prevailing wind direction: WNW at 13%
Peak gust and direction: 62 NE on 24th
SUNSHINE:
Campbell-Stokes card minutes: N/A
Astronomical total minutes: N/A
The 24-hour corrected mean temperature for January of
32.7 deg F is the ninth warmest on record.
BHO Warmest January Corrected Mean Temperatures, deg F (1885-2017)
1) 35.6 in 1913
2) 35.0 in 1932
3) 34.6 in 1937
4) 33.9 in 2006
5) 33.8 in 1933
33.8 in 1950
33.8 in 1990
8) 33.5 in 2002
9) 32.7 in 2017
10)32.1 in 1967
32.1 in 1995
Today’s Observations:
7 A.M.
Weather: Few distant cumulus NE-E, scattered altocumulus
Temperature: 26F; Dew Point: 20F; Wind: WSW at 12 kts
Sea-level pressure: 30.02 ins. Hg, rising, then more quickly
Visibility: 70 miles
6-hr Max temp: 28F
6-hr Min temp: 26F
24-hr precip: 0.00 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 200 SCT 70 167/26/20/2512/002/ FEW DSNT CU NE-E/
8/180 53015 10028 20026
10 A.M.
Weather: Few distant cumulus NE-ENE and SE, scattered altocumulus
Temperature: 35F; Dew Point: 18F; Wind: SW at 7 kts
Sea-level pressure: 30.01 ins. Hg, falling, then more quickly
Visibility: 70 miles, distant haze in all directions
BHO SA 1455 110 SCT 70 164/35/18/2207/001/ FEW DSNT CU NE-ENE AND SE
DSNT HZ ALQDS/ 8/130 58003
1 P.M.
Weather: Scattered cumulus, scattered altocumulus
Temperature: 36F; Dew Point: 21F; Wind: WSW at 10G16 kts
Sea-level pressure: 29.95 ins. Hg, falling, then more quickly
Visibility: 70 miles
6-hr Max temp: 37F
6-hr Min temp: 26F
BHO SA 1755 39 SCT 84 SCT 70 143/36/21/2410G16/995/
8/180 58021 10037 20026
SUMMARY FOR WEDNESDAY, FEBRUARY 1, 2017
TEMPERATURE (DEGREES F)
MAX…..40 NORMAL…..35
MIN…..23 NORMAL…..17
MEAN….32 NORMAL…..26
DEPARTURE FROM 30-YEAR NORMAL……………………+6
TOTAL DEPARTURE FOR THE MONTH……………………+6 [+5.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..33 DEPARTURE……….-6
TOTAL HEATING UNITS FOR THE MONTH…………..33 DEPARTURE……….-6
TOTAL HEATING UNITS FOR THE SEASON………..3060 DEPARTURE……..-510
TOTAL HEATING UNITS LAST SEASON TO DATE……2755 DIFFERENCE…….+305
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….43 W AT 2:48 P.M.
ASOS……………………44 W AT 3:01 P.M.
DAVIS…………………..43 W AT 2:48 P.M. RMY 47
FASTEST MILE FOR YESTERDAY…………………31 W AT 2:47 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………30 W AT 2:48 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..30 WNW AT 2:49 P.M.
AVERAGE WIND SPEED AND DIRECTION………….10.4 WSW
ASOS………………….11.3
DAVIS………………….9.1 WNW [290 deg.]
*last of multiple occurrances
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….5.53 DEPARTURE……-0.10
ASOS…………..5.91
TOTAL PRECIPITATION FOR THE YEAR………..5.53 DEPARTURE……+1.05
ASOS…………..5.91
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH…………….0.4 DEPARTURE…….-0.1
TOTAL SNOWFALL FOR THE SEASON…………..21.2 DEPARTURE……-12.4
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
1/1 41/29/35/+8/0.09/0.0/533/97 35 W AERO 36 W RMY 34
1/2 38/29/34/+7/0.00/0.0/011/02 21 E AERO 20 E RMY N/A
1/3 42/37/40/+14/1.14/0.0/000/00 39 ENE AERO 41 ENE RMY 34
1/4 44/30/37/+11/0.11/T/000/00 41 WNW AERO 46 WNW RMY 45
1/5 30/23/27/+1/0.00/0.0/343/62 37 W AERO 39 W RMY 38
1/6 30/20/25/-1/0.05/1.7/072/13 20 W AERO 20 W RMY N/A
1/7 22/14/18/-8/0.74/9.5/000/00 32 NNW AERO 39 NNW RMY 38
1/8 20/06/13/-13/0.01/T/512/92 26 NNW AERO 29 NNW RMY N/A
1/9 17/04/11/-15/0.00/0.0/335/60 23 SSW AERO 23 SSW RMY 25
1/10 41/14/28/+3/0.18/0.0/369/66 35 SE AERO 37 SE RMY N/A
1/11 53/40/47/+22/0.13/0.0/358/64 51 SSW AERO 48 SSW RMY 57
1/12 59/42/51/+26/0.15/0.0/118/21 37 SSW AERO 40 S RMY 40
1/13 55/23/39/+14/0.00/0.0/535/95 39 WNW AERO 43 WNW RMY 42
1/14 30/14/22/-3/0.00/0.0/339/60 20 SSW AERO 20 SSW RMY 22
1/15 35/23/29/+4/0.00/0.0/555/98 28 NW AERO 28 NW RMY 28
1/16 40/22/31/+6/0.00/0.0/540/95 28 SW AERO 25 SW RMY 27
1/17 40/29/35/+10/0.27/T/257/45 23 E AERO 23 E RMY 25
1/18 38/31/30/+10/0.29/T/000/00 30 ENE AERO 29 ENE RMY 26
1/19 44/30/37/+12/T/T/379/66 21 NNW AERO 20 NNW RMY 20
1/20 40/30/35/+10/T/0.0/000/00 17 NNW AERO 17 NNW RMY N/A
1/21 54/35/45/+20/T/0.0/133/23 29 W AERO 29 W RMY 28
1/22 46/36/41/+16/0.14/T/023/04 31 ENE AERO 30 ENE RMY N/A
1/23 36/33/35/+10/0.48/0.3/000/00 56 NE AERO 58 NE RMY N/A
1/24 40/32/36/+11/1.48/0.0/000/00 62 NE AERO 60 NE RMY 60
1/25 42/32/37/+12/0.03/0.0/…/.. 41 WNW AERO 40 WNW RMY 38
1/26 48/36/42/+17/0.10/0.0/…/.. 40 W AERO 44 W RMY 41
1/27 42/33/38/+13/T/T/…/.. 46 W AERO 46 W RMY 50
1/28 38/29/34/+9/0.00/0.0/…/.. 36 WNW AERO 40 WNW RMY 43
1/29 39/28/34/+9/0.00/0.0/…/.. 29 WSW AERO 29 WSW RMY 32
1/30 34/20/27/+1/0.00/0.0/…/.. 30 WNW*AERO 31 WNW RMY 31
1/31 28/15/22/-4/0.11/1.5/…/.. 29 WNW AERO 30 WNW RMY N/A
DAILY RECORDS FOR JANUARY 2017
1/12/17: NEW DAILY RECORD HIGH MAXIMUM TEMP. OF 59F,
PREVIOUS RECORD WAS 57F SET 1913 AND TIED IN 1975
1/12/17: NEW DAILY RECORD HIGH MINIMUM TEMP. OF 42F,
PREVIOUS RECORD WAS 40F SET 2006
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
2/1 40/23/32/+6/0.03/0.4/…/.. 43 W AERO 44 W RMY 47
2/2 Low temp since midnight is 26F; normal low is now 17F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 2
HIGH 55F IN 1951, 1973
LOW -12F IN 1961
PRECIP 1.91 INS. IN 1999
SNOWFALL 16.5 INS. IN 2015
PEAK GUST 92 MPH SW IN 1970
RECORDS FOR FEBRUARY 3
HIGH 58F IN 1991
LOW -7F IN 1955
PRECIP 2.14 INS. IN 1970
SNOWFALL 7.0 INS. IN 1913
PEAK GUST 102 MPH S IN 1970 [RECORD FOR MONTH]
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
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