Sunday, February 1, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 1, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
COLD START TO FEBRUARY AS A STORM HEADS INTO THE REGION
Temperatures fell into the single digits as February got off
to a cold start last night. Distant high clouds has moved into
the region and various types of Cirrus clouds have begun to fill
in as of the 10 o’clock observation. A low pressure system is
approaching the region and the barometric pressure has begun
falling from its earlier high.
PRELIMINARY STATS FOR JANUARY 2015
TEMPERATURE Deg. F
Av. Max: 30.8
Av. Min: 15.4
Mean: 23.1 [-2.4]
Corrected Mean:
Max. for month: 51 on 4th
Min. for month: -5 on 8th
HEATING DEGREE DAY UNITS
Total: 1293 [+67]
Total for season: 3349
PRECIPITATION
Total: 5.17
Total snowfall: 42.9
Additional data to be added in coming days
Top 10 Snowiest Januarys
1) 56.3 in 1948
2) 48.2 in 2011
3) 48.0 in 1904
4) 47.6 in 1996
5) 46.0 in 1966
6) 44.8 in 2005
7) 44.5 in 1923
8) 42.9 in 2015
9) 38.3 in 1987
10) 35.6 in 1978
Today’s Observations:
7 A.M.
Weather: Scattered Cirrus,
Temperature: 9F; Dew Point: 3F; Wind: WSW at 12 kts
Sea-level pressure: 30.13 ins. Hg, increasing then increasing more slowly
Visibility: 35 miles
6-hr max temp: 11F
6-hr min temp: 8F
24-hr precip: 0.00 in.
24 hr snowfall: 0.0 in.
Total average snow depth on ground: 16 inches
BHO SA 1155 250 SCT 35 202/9/3/2512/013/ 8/001 4//// 5//// 10011 20008
10 A.M.
Weather: Thin Broken Cirrus/Cirrostratus/Cirrocumulus
Temperature: 19F; Dew Point: 9F; Wind: W at 9 kts
Sea-level pressure: 30.16 ins. Hg, increasing then decreasing
Visibility: 30 miles
BHO SA 1455 250 –BKN 30 212/19/9/2809/016/ CLR SKY NW-NE
VSBY NE 35 DSNT HZ ALQDS/ 8/006 53010
1 P.M.
Weather: Thin broken cirrus
Temperature: 26F; Dew Point: 10F; Wind: W at 14G20 kts
Sea-level pressure: 30.10 ins. Hg, Falling then falling more rapidly
Visibility: 35 miles
6-hr max temp: 26F
6-hr min temp: 8F
BHO SA 1755 250 –BKN 20 –BKN 35 192/26/10/2814G20/010/ FFEW CUFRA S-WSW
FEW CCSL S VSBY WNW 45 DSNT HZ ALQDS/ 8/109 58020 10026 20008
SUMMARY FOR SATURDAY, JANUARY 31, 2015
TEMPERATURE (DEGREES F)
MAX…..21 NORMAL…..34
MIN……7 NORMAL…..17
MEAN….14 NORMAL…..26
DEPARTURE FROM 30-YEAR NORMAL…………………….-12
TOTAL DEPARTURE FOR THE MONTH…………………….-61 [-2.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..51 DEPARTURE……….+12
TOTAL HEATING UNITS FOR THE MONTH…………1288 DEPARTURE……….+62
TOTAL HEATING UNITS FOR THE SEASON………..3348 DEPARTURE………-183
TOTAL HEATING UNITS LAST SEASON TO DATE……3531 DIFFERENCE……..-167
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………52 NW AT 2:11 P.M.
ASOS…………………..54 NW AT 2:11 P.M.
DAVIS………………….48 WNW AT 9:23 P.M. RMY 57
FASTEST MILE FOR YESTERDAY………………..37 NW AT 2:06 P.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE……………..38 NW AT 9:48 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….35 NW AT 2:06 P.M.
AVERAGE WIND SPEED AND DIRECTION…………26.1 NW
ASOS…………………23.6
DVIS…………………22.3 NW [296 degrees]
* last of several occurrences…
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……….5.17 DEPARTURE…..+0.82
ASOS…………..5.46
TOTAL PRECIPITATION FOR THE YEAR………..5.17 DEPARTURE…..+0.82
ASOS…………..5.46
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH……………42.9 DEPARTURE…..+25.8
TOTAL SNOWFALL FOR THE SEASON…………..53.9 DEPARTURE…..+20.8
PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
1/1 31/18/25/-2/0.00/0.0/544/99 29 SSW RMY 30
1/2 37/26/32/+5/0.00/0.0/314/57 35 WSW RMY 38
1/3 34/21/28/+2/0.67/2.5/017/03 25 SE RMY 26
1/4 51/33/42/+16/0.48/0.0/000/00 30 SSW RMY N/A
1/5 46/13/30/+4/0.00/0.0/542/98 48 W RMY 54
1/6 15/10/13/-13/0.02/0.4/000/00 29 W RMY N/A
1/7 22/01/12/-14/0.01/0.3/394/71 43 WNW RMY 47
1/8 16/-5/6/-20/0.00/0.0/539/97 39 WNW RMY N/A
1/9 27/16/22/-4/0.08/0.9/201/36 35 WSW RMY 38
1/10 22/11/17/-8/0.00/0.0/541/97 26 WNW RMY 27
1/11 31/9/20/-5/45/0.00/0.0/123/22 26 SSW RMY N/A
1/12 36/31/34/+9/0.23/T/000/00 29 NNW RMY N/A
1/13 33/11/22/-3/0.00/0.0/524/93 30 NNW RMY 29
1/14 22/11/17/-8/T/T/000/00 18 NNW RMY 16
1/15 27/20/24/-1/0.09/0.8/000/00 20 WSW RMY 22
1/16 35/12/24/-1/T/T/341/60 46 WSW RMY 50
1/17 21/5/13/-12/0.00/0.0/558/98 30 WNW RMY N/A
1/18 50/19/35/+10/0.16/0.0/000/00 47 SE RMY 52
1/19 44/28/36/+11/T/0.0/304/53 33 W RMY 36
1/20 36/23/30/+5/0.00/0.0/495/86 28 W RMY 28
1/21 30/17/24/-1/0.00.0.0/358/62 21 WNW RMY N/A
1/22 36/25/31/+6/T/T/…/.. 20 WNW RMY 20
1/23 36/18/27/+2/0.00/0.0/…/.. 25 SSW RMY 26
1/24 32/27/30/+5/0.84/5.0/000/00 24 SSW RMY N/A
1/25 34/17/26/+1/0.00/0.0/…/.. 31 W RMY 33
1/26 26/9/18/-7/0.50/5.6/…/.. 45 N RMY N/A
1/27 17/10/14/-11/1.94/25.2/000/00 51 N RMY 52
1/28 22/8/15/-10/T/T/…/.. 30 NW RMY N/A
1/29 33/11/22/-3/0.00/0.0/…/.. 18 NW RMY N/A
1/30 32/15/24/-2/…/…/000/00 45 NW RMY 49
1/31 21/7/14/-12/0.00/0.00/…/…/ 52 NW RMY 57
DAILY RECORDS FOR JANUARY 2015
-NEW DAILY RECORD SNOWFALL FOR 27 JANUARY 2015
SNOWFALL 25.2 INS. IN 2015 [NEW RECORD FOR THE MONTH]
Surpasses previous record of 11.7 inches in 2011 for
the date, and surpasses previous record for the month of
19.0 inches on 20 January, 1978
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 1
HIGH 65F IN 1989
LOW -9F IN 1920
PRECIP 1.30 INS. IN 1898
SNOWFALL 11.0 INS. IN 1898
PEAK GUST 66e MPH SSW IN 1951
RECORDS FOR FEBRUARY 2
HIGH 55F IN 1951, 1973
LOW -12F IN 1961
PRECIP 1.91 INS. IN 1999
SNOWFALL 5.5 INS. IN 1916, 1934
PEAK GUST 92 MPH SW IN 1970
TODAY’S REPORT PREPARED BY: Robert Millette/Robert Skilling
