Wednesday, February 15, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, FEBRUARY 15, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
OVERCAST AND FOGGY BEFORE PRECIPITATION
With precipitation expected dew points rose to the mid 30s creating foggy conditions on the top of the hill. Visibility ranged from only 1 mile this morning to 30 miles at 1 PM ob. Temperatures remained slightly below normal but we still had melting slushy snow starting mid morning. Winds were coming from the SE today with an average of about 15 MPH.
Today’s Observations:
7 A.M.
Weather: Broken cirrus, few altocumulus SW-W
Temperature: 29F; Dew Point: 28F; Wind: SSE at 14 kts
Sea-level pressure: 29.61 ins. Hg, falling, then more slowly
Visibility: 10 miles, except 1V3 NW-SE, Fog NW-SE
6-hr Max temp: 29F
6-hr Min temp: 25F
24-hr precip: 0.00 in.
24-hr snowfall: 0.0 in.
BHO SA 1155 E250 BKN 10 028/29/28/1514/961/ FEW AC SW-W
FG NW-SE DSNT FG SE-NW VSBY NW-SE 1V3/ 8/051 4/013 56019
10029 20025
10 A.M.
Weather: Overcast stratus
Temperature: 35F; Dew Point: 32F; Wind: SE at 13G25 kts
Sea-level pressure: 29.53 ins. Hg, falling, then more quickly
Visibility: 20 miles, distant fog all quadrants
BHO SA 1455 E59 OVC 20 000/35/32/1413G25/953/ DSNT FG ALQDS/
8/6// 58028
1 P.M.
Weather: Overcast stratus
Temperature: 39F; Dew Point: 35F; Wind: SSE at 13G21 kts,
Sea-level pressure: 29.41 ins. Hg, falling, then unsteadily
Visibility: 30 miles, distant fog all quadrants
BHO SA 1755 E11 OVC 30 961/39/35/1513G21/941/ DSNT FG ALQDS/
8/6// 4/013 58039 10040 20029
SUMMARY FOR TUESDAY, FEBRUARY 14, 2017
TEMPERATURE (DEGREES F)
MAX…..35 NORMAL…..37
MIN…..16 NORMAL…..19
MEAN….26 NORMAL…..28
DEPARTURE FROM 30-YEAR NORMAL…………………….-2
TOTAL DEPARTURE FOR THE MONTH……………………+11 [+0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..39 DEPARTURE……….+2
TOTAL HEATING UNITS FOR THE MONTH………….525 DEPARTURE………-12
TOTAL HEATING UNITS FOR THE SEASON………..3552 DEPARTURE……..-516
TOTAL HEATING UNITS LAST SEASON TO DATE……3268 DIFFERENCE…….+284
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….23 NW AT 2:20 A.M.
AERO……………………24 NW AT 2:20 A.M.
ASOS……………………25 NW AT 2:20 A.M.
DAVIS…………………..23 NW AT 2:04 A.M. RMY 24
FASTEST MILE FOR YESTERDAY…………………18 NW AT 2:17 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………18 NW AT 2:20 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..17 NW AT 2:04 A.M.
AVERAGE WIND SPEED AND DIRECTION………….10.1 NW
ASOS………………….10.3
DAVIS………………….9.1 NNW [296 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……….3.29 DEPARTURE……+1.37
ASOS…………….NA
TOTAL PRECIPITATION FOR THE YEAR………..8.79 DEPARTURE……+2.52
ASOS…………….NA
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH……………28.7 DEPARTURE……+21.8
TOTAL SNOWFALL FOR THE SEASON…………..49.5 DEPARTURE…….+9.5
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 24/7/16/-11/T/T/…/.. 43 WNW AERO 50 WNW RMY 48
2/11 27/15/21/-6/0.14/2.9/…/.. 21 SE AERO 20 SE RMY 19
2/12 32/17/25/-2/0.71/5.6/…/.. 22 ENE AERO 28 ENE RMY N/A
2/13 32/20/26/-2/0.27/2.2/…/.. 48 NW AERO 60 NW RMY 61
2/14 35/16/26/-2/0.00/0.0/…/.. 23 NW AERO 24 NW RMY 24
2/15 Low temp since midnight is 25F; normal low is now 19F
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 15
HIGH 60F IN 1954
LOW -18F IN 1943
PRECIP 1.28 INCHES IN 1950
SNOWFALL 14.4 INCHES IN 2015
PEAK GUST 94e MPH WNW IN 1946
RECORDS FOR FEBRUARY 16
HIGH 62F IN 1954
LOW -16F IN 1943
PRECIP 1.91 INCHES IN 1958
SNOWFALL 18.6 INCHES IN 1958
PEAK GUST 78 MPH W IN 1967
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Kaitlin Geagan
