Sunday, January 8, 2017

| January 9, 2017 | Reply

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 8, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

COLD BUT CLEAR DAY AFTER YESTERDAY’S SNOW

Yesterday’s snow continued past midnight this morning and
brought a total of 9.5 inches to Blue Hill.  The monthly
snowfall now equals 11.2 inches, the season total 19.0 inches.

Skies were clear today with few cumulus and cirrus observed.
Temperatures continued to be below average with a morning low
of only 6F and a max. at 1:00PM of 19F.  Visibility ranged from
40-80 miles.  Winds have been out of the WNW-NW and gusting
to about 22 MPH.

Today’s Observations:

7 A.M.
Weather: Few stratocumulus NNE-S
Temperature: 7F; Dew Point: 2F; Wind: WNW at 10 kts
Sea-level pressure: 30.11 ins. Hg rising, then more quickly
Visibility: 40 miles
6-hr Max temp: 14F
6-hr Min temp:  7F
24-hr precip: 0.75 in.
24-hr snowfall: 6.4 ins.
BHO SA 1155 CLR 40 195/07/02/3010/011/ FEW SC NNE-S NEW SNW PST 24 HRS
9.5 INS/ 8/500 4/007 53014 MANUAL 70075 ASOS 70076 10014 20007

10 A.M.
Weather: Few cumulus NNE-E and SE-S
Temperature: 13F; Dew Point: 3F; Wind: NW at 10G19 kts
Sea-level pressure: 30.15 ins. Hg, rising, then more slowly
Visibility: 80 miles
BHO SA 1455 CLR 80 210/13/03/3110G19/015/ FEW CU NNE-E AND SE-S/
8/100 4/007 51015

1 P.M.
Weather: Few cumulus NNE-E and SSE-WNW, few cirrus SSE-WNW
Temperature: 19F; Dew Point: 1F; Wind: WNW at 10G19 kts
Sea-level pressure: 30.14 ins. Hg, falling, then more quickly
Visibility: 70 miles
6-hr Max temp: 19F
6-hr Min temp:  6F
BHO SA 1755 CLR 70 206/19/01/3010G19/014/ FEW CU NNE-E AND SSE-WNW
FEW CI SSE-WNW/ 8/101 4/007 58004 10019 20006

SUMMARY FOR SATURDAY, JANUARY 7, 2017

TEMPERATURE (DEGREES F)
MAX…..22   NORMAL…..34
MIN…..14   NORMAL…..18
MEAN….18   NORMAL…..26

DEPARTURE FROM 30-YEAR NORMAL……………………-8
TOTAL DEPARTURE FOR THE MONTH…………………..+32 [+4.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..47   DEPARTURE……….+8
TOTAL HEATING UNITS FOR THE MONTH………….239   DEPARTURE………-32
TOTAL HEATING UNITS FOR THE SEASON………..2271   DEPARTURE……..-304
TOTAL HEATING UNITS LAST SEASON TO DATE……1914   DIFFERENCE…….+357

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….32 NNW AT 6:46 P.M.
ASOS……………………37 NNW AT 6:46 P.M.
DAVIS…………………..34 N   AT 6:45 P.M. RMY 38
FASTEST MILE FOR YESTERDAY…………………26 NNW AT 7:45 P.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE………………25 N   AT 7:47 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..23 N   AT 6:45 P.M.
AVERAGE WIND SPEED AND DIRECTION………….13.2 NNW
ASOS………………….13.4
DAVIS…………………11.9 N [005 deg.]
*last of multiple occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.75  DEPARTURE……+0.61
ASOS…………..0.76
TOTAL PRECIPITATION FOR THE MONTH……….2.14  DEPARTURE……+1.14
ASOS…………..2.21
TOTAL PRECIPITATION FOR THE YEAR………..2.14  DEPARTURE……+1.14
ASOS…………..2.21

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….9.5  DEPARTURE…….+9.0
TOTAL SNOWFALL FOR THE MONTH……………11.2  DEPARTURE…….+7.3
TOTAL SNOWFALL FOR THE SEASON…………..19.0  DEPARTURE…….-0.9

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/…/..           35 W   AERO 36 W   RMY 34
1/2   38/29/34/+7/0.00/0.0/…/..           21 E   AERO 20 E   RMY N/A
1/3   42/37/40/+14/1.15/0.0/000/00          39 ENE AERO 41 ENE RMY 34
1/4   44/30/37/+11/0.11/T/…/..            41 WNW AERO 46 WNW RMY 45
1/5   30/23/27/+1/0.00/0.0/…/..           37 W   AERO 39 W   RMY 38
1/6   30/20/25/-1/0.05/1.7/…/..           20 W   AERO 20 W   RMY N/A
1/7   22/14/18/-8/…./…/…/..           32 NNW AERO 39 NNW RMY 38

1/8 Low temp since midnight is 7F; normal low is now 18F

DAILY RECORDS FOR JANUARY 2017
None so far.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JANUARY 8
HIGH 65F IN 2008
LOW -8F IN 1968
PRECIP 1.70 INS. IN 1958,1979
SNOWFALL 12.5 INS. IN 1996
PEAK GUST 77 MPH NNW IN 1958

RECORDS FOR JANUARY 9
HIGH 62F IN 1937
LOW -9F IN 1968
PRECIP 3.00 INS. IN 1956
SNOWFALL 10.0 INS. IN 1904
PEAK GUST 101e MPH SE IN 1978 [RECORD FOR MONTH]

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle

Category: Daily Discussions

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