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Monday, January 23, 2017

January 23, 2017

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, JANUARY…

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JANUARY 23, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

WINDS GUSTING UP TO 40 MPH, LIGHT SNOW AS STORM APPROACHES

Precipitation totaled 0.16 inches this morning at the
7:00AM observation, with traces of snow on the ground.
Light snow and rain fell on and off throughout the day
totaling only 0.01 inches by 1:00PM.  Fog limited
visibility to 30 miles or less at each observation, and
skies remained mostly cloudy.

Winds shifted ENE yesterday evening and have stayed out
of that direction through the early afternoon.  Peak gusts
have been up to approximately 40 MPH.

Today’s Observations:

7 A.M.
Weather: Fog, few cumulus SW-W and NW-N, two layers of broken stratus
Temperature: 34F; Dew Point: 31F; Wind: ENE at 18G27 kts,
Peak Wind: 31 kts (36 mph) ENE @ 6:22 A.M.
Sea-level pressure: 30.00 ins. Hg, falling then rising
Visibility: 6 miles, except 20 miles N-NE, 30 miles SW, 10 miles WSW-N,
distant fog SW-NE
6-hr Max temp: 36F
6-hr Min temp: 33F
24-hr precip: 0.16 in
24-hr snowfall: Trace
BHO SA 1155 E18 BKN 37 BKN 6F 158/34/31/0718G27/000/ FEW CU SW-W AND
NW-N VSBY N-NE 20 SW 30 WSW-N 10 DSNT FG SW-NE PK WND 0631/22 NEW SNW
PST 24 HRS TRACE/ 8/6// 53011 MANUAL 70016 ASOS 70017 10036 20033

10 A.M.
Weather: Broken stratocumulus and broken stratus
Temperature: 35F; Dew Point: 31F; Wind: ENE at 16G29 kts
Peak Wind: 31 kts (36 mph) ENE @ 9:01 A.M.
Sea-level pressure: 30.03 ins. Hg, rising then steady
Visibility: 30 miles, except 10 miles W-NE,
distant fog in all directions
3-hr precip: Trace
3-hr snowfall: Trace
BHO SA 1455 E12 BKN 35 OVC 30 170/35/31/0616G29/003/ VSBY W-NE 10
DSNT FG ALDQS PK WND 0731/01 NEW SNW PST 3 HRS TRACE/ 8/6// 51012
MANUAL 600//

1 P.M.
Weather: Fog SW-N, scattered stratocumulus, broken stratus and overcast stratus
Temperature: 34F; Dew Point: 32F; Wind: ENE at 23G31 kts
Peak Wind: 31 kts (36 mph) ENE @ 12:50 P.M.
Sea-level pressure: 29.96 ins. Hg, falling, then more slowly
Visibility: 15 miles, except 3 miles SW-N, distant fog N-SW
6-hr Max temp: 36F
6-hr Min temp: 33F
6-hr precip: 0.01 in.
6-hr snowfall: Trace
BHO SA 1755 12 SCT E25 BNK 31 OVC 15S- 146/34/32/0623G32/996/ VSBY
SW-N 3 FG SW-N DSNT FG N-SW PK WND 0631/50 NEW SNW PST 6 HRS TRACE/
8/6// 58024 MANUAL 6001/ AS0S 60001 10036 10033

SUMMARY FOR SUNDAY, JANUARY 22, 2017

TEMPERATURE (DEGREES F)
MAX…..46   NORMAL…..34
MIN…..36   NORMAL…..17
MEAN….41   NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL…………………..+16
TOTAL DEPARTURE FOR THE MONTH………………….+154 [+6.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..24   DEPARTURE………-16
TOTAL HEATING UNITS FOR THE MONTH………….715   DEPARTURE……..-154
TOTAL HEATING UNITS FOR THE SEASON………..2747   DEPARTURE……..-426
TOTAL HEATING UNITS LAST SEASON TO DATE……2455   DIFFERENCE…….+292

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….31 ENE AT 11:32 P.M.*
ASOS……………………31 ENE AT  6:25 P.M.
DAVIS…………………..28 E   AT  6:24 P.M. RMY 40
FASTEST MILE FOR YESTERDAY…………………20 ENE AT 10:54 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………22 E   AT 10:57 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..20 E AT 11:33 P.M.
AVERAGE WIND SPEED AND DIRECTION………….11.0 NE
ASOS………………….11.7
DAVIS………………….9.7 ENE [60 deg.] *last of multiple occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.16  DEPARTURE……+0.02
ASOS…………..0.17
TOTAL PRECIPITATION FOR THE MONTH……….3.32  DEPARTURE……+0.20
ASOS…………..3.63
TOTAL PRECIPITATION FOR THE YEAR………..3.32  DEPARTURE……+0.20
ASOS…………..3.63

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..TRACE  DEPARTURE…….-0.6
TOTAL SNOWFALL FOR THE MONTH……………11.2  DEPARTURE…….-1.1
TOTAL SNOWFALL FOR THE SEASON…………..19.0  DEPARTURE…….-9.3

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/+8/0.09/0.0/533/97           35 W   AERO 36 W   RMY 34
1/2   38/29/34/+7/0.00/0.0/011/02           21 E   AERO 20 E   RMY N/A
1/3   42/37/40/+14/1.14/0.0/000/00          39 ENE AERO 41 ENE RMY 34
1/4   44/30/37/+11/0.11/T/000/00            41 WNW AERO 46 WNW RMY 45
1/5   30/23/27/+1/0.00/0.0/343/62           37 W   AERO 39 W   RMY 38
1/6   30/20/25/-1/0.05/1.7/072/13           20 W   AERO 20 W   RMY N/A
1/7   22/14/18/-8/0.74/9.5/000/00           32 NNW AERO 39 NNW RMY 38
1/8   20/06/13/-13/0.01/T/512/92            26 NNW AERO 29 NNW RMY N/A
1/9   17/04/11/-15/0.00/0.0/335/60          23 SSW AERO 23 SSW RMY 25
1/10  41/14/28/+3/0.18/0.0/…/..           35 SE  AERO 37 SE  RMY N/A
1/11  53/40/47/+22/0.13/0.0/…/..          51 SSW AERO 48 SSW RMY 57
1/12  59/42/51/+26/0.15/0.0/…/..          37 SSW AERO 40 S   RMY 40
1/13  55/23/39/+14/0.00/0.0/…/..          39 WNW AERO 43 WNW RMY 42
1/14  30/14/22/-3/0.00/0.0/…/..           20 SSW AERO 20 SSW RMY 22
1/15  35/23/29/+4/0.00/0.0/…/..           28 NW  AERO 28 NW  RMY 28
1/16  40/22/31/+6/0.00/0.0/…/..           28 SW  AERO 25 SW  RMY 27
1/17  40/29/35/+10/…./T/…/..            23 E   AERO 23 E   RMY 25
1/18  38/31/30/+10/…./T/…/..            30 ENE AERO 29 ENE RMY 26
1/19  44/30/37/+12/…./T/…/..            21 NNW AERO 20 NNW RMY 20
1/20  40/30/35/+10/…./0.0/…/..          17 NNW AERO 17 NNW RMY N/A
1/21  54/35/45/+20/0.00/0.0/…/..          29 W   AERO 29 W   RMY 28
1/22  46/36/41/+16/…./T/…./..           31 ENE AERO 30 ENE RMY 40

1/22 Low temp since midnight is 33F; normal low is now 17F

DAILY RECORDS FOR JANUARY 2017

1/12/17: NEW DAILY RECORD HIGH MAXIMUM TEMP. OF 59F,
PREVIOUS RECORD WAS 57F SET 1913 AND TIED IN 1975
1/12/17: NEW DAILY RECORD HIGH MINIMUM TEMP. OF 42F,
PREVIOUS RECORD WAS 40F SET 2006

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

RECORDS FOR JANUARY 23
HIGH 62F IN 1906
LOW -10F IN 1976
PRECIP 2.40 INS. IN 1935
SNOWFALL 14.6 INS. IN 1966
PEAK GUST 85 MPH S IN 1992

RECORDS FOR JANUARY 24
HIGH 60F IN 1967
LOW -12F IN 1907
PRECIP 2.04 INS. IN 1998
SNOWFALL 11.3 INS. IN 1935
PEAK GUST 82 MPH S IN 1996

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Kaitlin Geagan

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
Part I — Data Use Policy
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