Monday, January 14, 2019

| January 14, 2019 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JANUARY 14, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

CALMER WINDS AND OVERCAST SKIES….

Wind speeds today and yesterday have been much calmer than they
have been recently. Yesterday’s peak gust was only 18 MPH out of
the NNW at 2:31 A.M. EST, which was the first daily peak gust
under 20 MPH for the month of January. So far today, the peak
gust was 19 MPH out of the N at 11:06 A.M. In the sky, there has
been a layer of overcast stratus throughout the day. Visibility
has stayed around 70 miles for most of the area, except it was
only 30 miles from the NNE-S in the morning hours. Temperatures
have warmed up slightly from yesterday. The maximum temperature
yesterday was 25F, and the minimum was 11F. This put yesterday a
total of 7F below the normal average temperature of 25F for this
time of year. The temperature dropped to a low this morning of
20F, and so far today it has climbed to a maximum of 27F. The
air had more moisture than previous days, with relative humidity
staying around 75%. The air pressure has continued to drop today.

Today’s Observations:

7 A.M.
Weather: Overcast stratus
Temperature: 20F; Dew Point: 14F; Wind: N at 8G15 kts
Sea-level pressure: 30.26 ins. Hg, falling, then rising
Visibility: 70 miles, except for 30 miles NNE-S, distant fog
in all directions
6-hr Max temp: 24F
6-hr Min temp: 20F
24-hr Precip: 0.00
24-hr snowfall: 0.0
Snow depth: 0 ins.
BHO SA 1155 E022 OVC 70 248/20/14/0008G15/026/ VSBY 30 NNE-S
DSNT FG ALQDS/ 8/6// 55006 10024 20020

10 A.M.
Weather: Overcast stratus
Temperature: 22F; Dew Point: 14F; Wind: N at 7 kts
Sea-level pressure: 30.27 ins. Hg, rising, then falling
Visibility: 70 miles, except for 30 miles NNE-S, distant fog
in all directions
3-hr Precip: 0.00 ins.
BHO SA 1455 E019 OVC 70 252/22/14/3507/027/ VSBY 30 NNE-S
DSNT FG ALQDS/ 8/6// 50004

1 P.M.
Weather: Overcast stratus
Temperature: 27F; Dew Point: 20F; Wind: N at 6G15 kts
Sea-level pressure: 30.19 ins. Hg, falling unsteadily
Visibility: 70 miles, distant fog in all directions
6-hr Max temp: 27F
6-hr Min temp: 20F
6-hr Precip: 0.00 ins.
6-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1755 E018 OVC 70 224/27/20/0006G15/019/ DSNT FG ALQDS/
8/6// 57028 10027 20020

SUMMARY FOR SUNDAY, JANUARY 13, 2019

TEMPERATURE (DEGREES F)
MAX…..25   NORMAL…..34
MIN…..11   NORMAL…..17
MEAN….18   NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL……………………-7
TOTAL DEPARTURE FOR THE MONTH…………………..+46 [+3.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..47   DEPARTURE………+7
TOTAL HEATING UNITS FOR THE MONTH………….463   DEPARTURE……..-45
TOTAL HEATING UNITS FOR THE SEASON………..2759   DEPARTURE……..-53
TOTAL HEATING UNITS LAST SEASON TO DATE……2679   DIFFERENCE…….+80

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..18 NNW AT  2:31 A.M.
AERO…………………….16 NW  AT  1:51 A.M.
ASOS…………………….19 NNW AT  2:32 A.M.
DAVIS……………………18 NNW AT  1:53 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….14 NW  AT  1:50 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….13 ENE AT 10:09 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………14 NNW AT  1:54 A.M.
AVERAGE WIND SPEED AND DIRECTION……………6.8 NNW
ASOS……………………7.4
DAVIS…………………..7.1 NNE [14 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……….2.14  DEPARTURE…….+0.29
ASOS…………..2.15
TOTAL PRECIPITATION FOR THE YEAR………..2.14  DEPARTURE…….+0.29
ASOS…………..2.15

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……..-0.6
TOTAL SNOWFALL FOR THE MONTH…………..Trace  DEPARTURE……..-7.3
TOTAL SNOWFALL FOR THE SEASON……………7.7  DEPARTURE…….-15.6

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

01/01 54/29/42/+15/…./0.0/…/..         53 W   AERO 53 W   RMY 54
01/02 34/24/29/+2/…./…/…/..          22 NW  AERO 22 NW  RMY N/A
01/03 42/28/35/+9/0.01/T/…/..            28 WNW AERO 30 WNW RMY 30
01/04 43/30/37/+11/…./…/…/..         29 SW  AERO 29 SW  RMY 29
01/05 41/32/37/+11/1.19/…/…/..         26 NE  AERO 25 NNW RMY 27
01/06 42/21/32/+6/0.00/0.0/…/..          42 NW  AERO 46 NW  RMY 50
01/07 26/14/20/-6/…/…/…/.. 37 NW  AERO 41 NW  RMY N/A
01/08 40/24/32/+6/…/…/…/..           24 SSE AERO 23 SSE RMY N/A
01/09 42/31/37/+11/…/…/…/..          44 W   AERO 46 WNW RMY 45
01/10 32/20/26/+1/T/T/…/..               37 NW  AERO 41 NW  RMY 43
01/11 26/12/19/-6/0.00/0.0/…/..          36 WNW AERO 37 WNW RMY 38
01/12 26/9/18/-7/0.00/0.0/…/..           32 NW  AERO 32 NW  RMY 29
01/13 25/11/18/-7/0.00/0.0/…/..          18 NNW AERO 16 NW  RMY N/A

01/14 Low temp since midnight is 20F; normal low is 17F

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

RECORDS FOR JANUARY 14
HIGH 65F IN 1995
LOW -12F IN 1914
PRECIP 1.45 INS. IN 2008
SNOWFALL 10.3 INS. IN 2008
PEAK GUST 68 MPH WNW IN 1976, S IN 2005

RECORDS FOR JANUARY 15
HIGH 64F IN 1995
LOW -16F IN 1957 [RECORD FOR MONTH]
PRECIP 2.63 INS. IN 1958
SNOWFALL 8.8 INS. IN 1983
PEAK GUST 69e MPH SE IN 1940

TODAY’S REPORT PREPARED BY: Lizzy Suzedell

Category: Daily Discussions

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