Saturday, January 31, 2015
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JANUARY 31, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
COLD AND BLUSTERY ON THE SUMMIT THIS MORNING AS
JANUARY COMES TO A CLOSE….
After reaching a high of 32F on Friday, temperatures rapidly decreased
overnight, bottoming out at 8F early this morning. Heavy cloud cover this
morning has helped keep the temperature in the low teens – roughly twenty
degrees below normal. Winds have really picked up out of the northwest,
averaging 26 MPH with gusts as high as 47 MPH and creating blistering wind
chills in the negative teens!
Meanwhile, an additional 1.2 inches of snow fell since 1 P.M. yesterday
bringing the storm total to 2.0 inches. As a result, snow for January is
now up to 42.9 inches, as of 7:00 A.M. this morning, which keeps January
2015 in 8th place for snowiest January.
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 (7 A.M. TODAY)
9) 38.3 in 1987
10) 35.6 in 1978
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus, blowing snow all quadrants,
Temperature: 9F; Dew Point: 3F; Wind: NW at 23G30 kts
Sea-level pressure: 29.77 ins. Hg, increasing then increasing
more rapidly
Visibility: 80 miles, N and E-SSE 50 miles
Peak wind: 37 kts (43 MPH) NW at 0602E
6-hr max temp: 14F
6-hr min temp: 8F
24-hr precip: 0.12 in.
24 hr snowfall: 2.0 in.
Total average snow depth on ground: 16 inches
BHO SA 1155 26 OVC 80 081/09/03/3223G30/977 BLSN ALQDS NEW SNW PST
24HR 2.0 IN VSBY N & ESE-S 50 MI PK WND 3237/02 8/6// 4/016 53015
ASOS 60003 70009 MANUAL 70012 10014 20008
10 A.M.
Weather: Broken altocumulus, broken stratocumulus
Temperature: 11F; Dew Point: -6F; Wind: NW at 26G36 kts
Sea-level pressure: 29.79 ins. Hg, increasing then increasing
more slowly
Visibility: 75 miles, SE-SSE 50 miles
Peak wind: 38 kts (44 MPH) NW at 0906E
BHO SA 1455 65 BKN E110 BKN 75 087/11/-6/3226G36/979 PK WND 3238/06
VSBY 50 MI SE-SSE 8/620 51006
SUMMARY FOR FRIDAY, JANUARY 30, 2015
TEMPERATURE (DEGREES F)
MAX…..32 NORMAL…..34
MIN…..15 NORMAL…..17
MEAN….24 NORMAL…..26
DEPARTURE FROM 30-YEAR NORMAL……………………..-2
TOTAL DEPARTURE FOR THE MONTH…………………….-49 [-1.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..41 DEPARTURE………..+1
TOTAL HEATING UNITS FOR THE MONTH…………1237 DEPARTURE……….+50
TOTAL HEATING UNITS FOR THE SEASON………..3297 DEPARTURE………-194
TOTAL HEATING UNITS LAST SEASON TO DATE……3491 DIFFERENCE……..-184
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………45 NW AT 9:24 P.M.
ASOS…………………..49 NW AT 9:40 P.M.
DAVIS………………….48 WNW AT 9:23 P.M. RMY 49
FASTEST MILE FOR YESTERDAY………………..35 NW AT 9:29 P.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE……………..35 NW AT 10:12 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….31 NW AT 10:12 P.M.
AVERAGE WIND SPEED AND DIRECTION…………13.9 WNW
ASOS…………………14.2
DAVIS………………..12.1 WNW [296 degrees]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.12 DEPARTURE…..-0.02
ASOS…………..0.09
TOTAL PRECIPITATION FOR THE MONTH……….5.17 DEPARTURE…..+0.95
ASOS…………..5.46
TOTAL PRECIPITATION FOR THE YEAR………..5.17 DEPARTURE…..+0.95
ASOS…………..5.46
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….2.0 DEPARTURE……+1.5
TOTAL SNOWFALL FOR THE MONTH……………42.9 DEPARTURE…..+26.3
TOTAL SNOWFALL FOR THE SEASON…………..53.9 DEPARTURE…..+21.3
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/-14/0.01/0.3/383/69 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 morning low temp: 7F since midnight; normal low is now 17F
DAILY RECORDS FOR JANUARY 2015
-NEW DAILY RECORD SNOWFALL FOR 27 JANUARY 2015
SNOWFALL 25.2 INS. IN 2015 [NEW RECORD FOR THE MONTH]
Previous daily record: Previous monthly record:
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JANUARY 31
HIGH 58F IN 1913, 1947, 2013
LOW -12F IN 1920
PRECIP 1.03 INS. IN 1914
SNOWFALL 9.0 INS. IN 1898
PEAK GUST 75 MPH NW IN 1974
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
TODAY’S REPORT PREPARED BY: Eli Melaas
