BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 12, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
EARLY MORNING SNOW AS STORM MOVED IN
0.2 inches of snow fell at Blue Hill this morning before the 7 AM observation,
with snow on and off throughout the morning. Fog obscured the view for
much of the day only lifting for a short period of time where visibility
reached about 10 miles, but fog had returned by the 10 AM observation.
The temperature has steadily increased during the day as the winds shifted
from north to east. The pressure is falling rapidly as a storm approaches that
will bring the observatory more snow. The 0.3 that fell during the day has
brought the storm total to 0.5 inches of snow so far today.
Today’s Observations:
7 A.M.
Weather: Light snow, fog
Temperature: 19F; Dew Point: 19F; Wind: N at 09 kts
Sea-level pressure: 30.16 ins. Hg, falling, then more rapidly
Visibility: 1/2 mile
6-hr Max temp: 19F
6-hr Min temp: 15F
24-hr precip: 0.01 in.
24-hr snowfall: 0.2 in.
BHO SA 1155 W3 X 1/2S-F 214/19/19/3609/016/ FG ALQDS NEW SNW PST 24 HRS 0.2 INS/
8//// 4//// 58004 MANUAL 7000/ ASOS 70001 10019 20015
10 A.M.
Weather: Snow, fog
Temperature: 25F; Dew Point: 25F; Wind: N at 7 kts
Sea-level pressure: 30.11 ins. Hg, falling, then more rapidly
Visibility: 1/2 mile
3-hr Precipitation:0.1 inches
BHO SA 1455 W3 X 1/2SF 197/25/25/0607/011/ FG ALQDS NEW SNW PST 3 HRS 0.1 INS/
8//// 58017 MANUAL 60001 ASOS 60001
1 P.M.
Weather: Snow, Fog
Temperature: 32F; Dew Point: 32F; Wind: E at 14 kts
Sea-level pressure: 29.99 ins. Hg, falling, then more rapidly
Visibility:1/2 mile
6-hr Max temp: 32F
6-hr Min temp: 19F
6-hr Precipitation:0.3 inches
BHO SA 1755 W3 X 1/2SF 155/32/32/1014/999/ FG ALQDS NEW SNW PST 6 HRS 0.3
8//// 58045 MANUAL 60003 ASOS 60003 10032 20019
SUMMARY FOR SATURDAY, FEBRUARY 11, 2017
TEMPERATURE (DEGREES F)
MAX…..26 NORMAL…..36
MIN…..15 NORMAL…..18
MEAN….21 NORMAL…..27
DEPARTURE FROM 30-YEAR NORMAL…………………..-6
TOTAL DEPARTURE FOR THE MONTH…………………..+17 [+1.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..44 DEPARTURE……….6+
TOTAL HEATING UNITS FOR THE MONTH………….407 DEPARTURE………-18
TOTAL HEATING UNITS FOR THE SEASON………..3434 DEPARTURE……..-522
TOTAL HEATING UNITS LAST SEASON TO DATE……3091 DIFFERENCE…….+343
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….21 SE AT 5:59 A.M.
ASOS……………………20 N AT 11:38 P.M.
DAVIS…………………..16 SSE AT 6:28 A.M. RMY 19
FASTEST MILE FOR YESTERDAY…………………14 SE AT 6:24 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 N AT 11:49 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..12 SSE AT 6:01 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.0 NW
ASOS………………….10.2
DAVIS………………….5.7 ENE [69 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01 DEPARTURE……-0.13
ASOS……………0.01
TOTAL PRECIPITATION FOR THE MONTH……….2.32 DEPARTURE……+0.83
ASOS…………….NA
TOTAL PRECIPITATION FOR THE YEAR………..7.82 DEPARTURE……+1.98
ASOS…………….NA
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.2 DEPARTURE…….-0.3
TOTAL SNOWFALL FOR THE MONTH……………21.1 DEPARTURE……+15.7
TOTAL SNOWFALL FOR THE SEASON…………..41.9 DEPARTURE…….+3.4
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 37/28/33/+7/0.00/0.0/…/.. 41 WNW AERO 41 WNW RMY 43
2/7 37/30/34/+7/0.54/0.7/…/.. 32 ENE AERO 31 ENE RMY 32
2/8 49/25/37/+10/T/0.0/…/.. 25 W AERO 25 W RMY 31
2/9 35/8/22/-5/1.60/16.9/…/.. 54 NNE AERO 53 NNE RMY 54
2/10 26/7/17/-11/…/…/…/.. 43 WNW AERO 50 WNW RMY 48
2/11 26/15/21/-6/0.01/0.2/…/.. 21 SE AERO 20 SE RMY 19
2/11 Low temp since midnight is 15F; normal low is now 18F
DAILY RECORDS FOR FEBRUARY 2017
2/09/17: NEW DAILY RECORD MAXIMUM SNOWFALL OF 16.9 INS.
PREVIOUS RECORD WAS 14.0 INS. SET IN 2015
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 12
HIGH 56F IN 1999
LOW -14F IN 1914
PRECIP 4.85 INCHES IN 1886 [RECORD FOR MONTH]
SNOWFALL 15.0 INCHES IN 2006
PEAK GUST 70 MPH E IN 1985
RECORDS FOR FEBRUARY 13
HIGH 64F IN 1951
LOW -10F IN 1967
PRECIP 2.80 INCHES IN 2008
SNOWFALL 13.5 INCHES IN 1894
PEAK GUST 60 MPH SE IN 1972
TODAY’S REPORT PREPARED BY: Robert Millette
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