BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, FEBRUARY 6, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
CLEAR AND GUSTY DAY WITH WINDS GUSTING OVER 41 MPH
The winds continue to be coming strongly from the west all day.
Wind speeds continued overnight and peaked around 3:30 AM at 41 mph.
The wind chill made the outside temperature feel colder than recorded
with a high of 36F by the 1 PM ob. Visibility today was excellent at
80 miles. Skies were clear with few cumulus and cirrus.
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: 6690 mins. of possible 17130 or 39%
Astronomical total minutes: 6909 mins. of possible 17676 or 39%
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 cumulus SW-E, few altocumulus WSW-NW few, few
cirrus all quadrants
Temperature: 29F; Dew Point: 10F; Wind: W at 13G20 kts
Sea-level pressure: 30.00 ins. Hg, rising, then more rapidly
Visibility: 80 miles
6-hr Max temp: 35F
6-hr Min temp: 29F
24-hr precip: 0.00 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 CLR 80 148/29/10/2713G20/000/ FEW CU SW-E
FEW AC WSW-NW FEW CI ALQDS/ 8/161 53028 10035 20029
10 A.M.
Weather: Few cumulus NE-E and SW-WNW, few cirrus all quadrants
Temperature: 33F; Dew Point: 13F; Wind: W at 11G22 kts,
Peak Wind: 27 kts (31 mph) W @ 9:01AM
Sea-level pressure: 30.05 ins. Hg, falling, then more rapidly
Visibility: 80 miles
BHO SA 1455 CLR 80 177/33/13/2811G22/005/ FEW CU NE-E AND SW-WNW
FEW AC N-NNE FEW CI ALQDS PK WND 2827/01/ 8/161 53029
1 P.M.
Weather: Few cumulus NE and W-SSW, Few cirrus all quadrants
Temperature: 36F; Dew Point: 12F; Wind: W at 15G24 kts,
Peak Wind: 26 kts (30 MPH) W at 12:33PM
Sea-level pressure: 30.02 ins. Hg, steady then falling
Visibility: 80 miles
6-hr Max temp: 36F
6-hr Min temp: 28F
BHO SA 1755 CLR 80 166/36/12/2715G24/002/ FEW CU NE AND W-SSW
FEW CI ALQDS PK WND 2726/33/ 8/101 58011 10036 20028
SUMMARY FOR SUNDAY, FEBRUARY 5, 2017
TEMPERATURE (DEGREES F)
MAX…..43 NORMAL…..35
MIN…..22 NORMAL…..17
MEAN….33 NORMAL…..26
DEPARTURE FROM 30-YEAR NORMAL……………………+7
TOTAL DEPARTURE FOR THE MONTH…………………..+15 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..32 DEPARTURE……….+7
TOTAL HEATING UNITS FOR THE MONTH………….180 DEPARTURE………-15
TOTAL HEATING UNITS FOR THE SEASON………..3207 DEPARTURE……..-519
TOTAL HEATING UNITS LAST SEASON TO DATE……2854 DIFFERENCE…….+353
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….38 SSW AT 12:18 P.M.
ASOS……………………42 SSW AT 12:18 P.M.
DAVIS…………………..43 SW AT 12:18 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………30 SSW AT 2:45 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………30 SW AT 2:47 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..29 WSW AT 2:46 P.M.
AVERAGE WIND SPEED AND DIRECTION………….14.9 SSW
ASOS………………….15.0
DAVIS…………………13.5 WSW [250 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.03 DEPARTURE……-0.65
ASOS…………..0.04
TOTAL PRECIPITATION FOR THE YEAR………..5.53 DEPARTURE……+0.50
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…….-2.1
TOTAL SNOWFALL FOR THE SEASON…………..21.2 DEPARTURE……-14.4
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/+12/0.03/0.0/486/83 41 WNW AERO 40 WNW RMY 38
1/26 48/36/42/+17/0.10/0.0/024/04 40 W AERO 44 W RMY 41
1/27 42/33/38/+13/T/T/212/36 46 W AERO 46 W RMY 50
1/28 38/29/34/+9/0.00/0.0/249/42 36 WNW AERO 40 WNW RMY 43
1/29 39/28/34/+9/0.00/0.0/143/24 29 WSW AERO 29 WSW RMY 32
1/30 34/20/27/+1/0.00/0.0/185/31 30 WNW*AERO 31 WNW RMY 31
1/31 28/15/22/-4/0.11/1.5/198/33 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 38/25/32/+6/T/T/…/.. 36 WNW AERO 37 WNW RMY 36
2/3 30/19/25/-1/0.00/0.0/…/.. 28 WNW AERO 29 WNW RMY 31
2/4 31/15/23/-3/0.00/0.0/…/.. 31 WNW AERO 30 WNW RMY N/A
2/5 43/22/33/+7/0.00/0.0/…/.. 38 SSW AERO 41 SSW RMY N/A
2/6 Low temp since midnight is 28F; normal low is now 18F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 6
HIGH 54F IN 1909
LOW -10F IN 1895
PRECIP 1.88 INS. IN 1896
SNOWFALL 13.0 INS. IN 1978 [BLIZZARD OF 1978]
PEAK GUST 84e MPH NE IN 1978
RECORDS FOR FEBRUARY 7
HIGH 51F IN 1951,1953
LOW -8F IN 1910
PRECIP 2.12 INS. IN 1983
SNOWFALL 17.1 INS. IN 1978 [BLIZZARD OF 1978]
PEAK GUST 87e MPH SSE IN 1951
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Kaitlin Geagan
Monthly Skymail, event announcements, and research summaries.
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