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Saturday, January 5, 2019

January 5, 2019

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, 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
SATURDAY, JANUARY 5, 2019
ALL TIMES ARE IN EASTERN STANDARD TIME

CONTINUED WARMER THAN NORMAL TEMPERATURES AND RAIN….

The temperatures at Blue Hill continued to be warmer
than  normal today with a maximum of 41F by the 1:00
P.M. EST observation, which is 7F above the normal
maximum temperature for this day of 34F. The minimum
temperature overnight only went down to 36F, or 18F
above the normal minimum. Precipitation also began to
fall early this morning, giving us a total of 0.23 ins.
so far today. Winds were light throughout the morning
until they began to pick up slightly in the afternoon
with a shift to the northeast. Yesterday was more
blustery, as there was a peak gust of 29 MPH out of
the southwest at 11:23 A.M. Pressure is also continuing
to drop, as it has decreased by over 5 millibars since
the morning.

Today’s Observations:

7 A.M.
Weather: Light rain and fog, overcast stratus
Temperature: 38F; Dew Point: 38F; Wind: SSW at 4 kts,
Wind Speed: Light
Sea-level pressure: 29.67 ins. Hg, falling, then less quickly
Visibility: 1 1/2 miles, fog
6-hr Max temp: 38F
6-hr Min temp: 36F
24-hr Precip: 0.04 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1155 E031 OVC 1 1/2R-F 048/38/38/2004/967/ WND LGT/
8/6// 70004 56016 10038 20036 

10 A.M.
Weather: Drizzle, fog
Temperature: 39F; Dew Point: 39F; Wind: ENE at 4 kts,
Wind Speed: Light
Sea-level pressure: 29.65 ins. Hg, falling, then more quickly
Visibility: 1/8 mile, fog
3-hr Precip: 0.17 ins.
BHO SA 1455 W3 X 1/8LF 040/39/39/0704/965/ WND LGT/ 8////
60017 58008

1 P.M.
Weather: Light drizzle, fog
Temperature: 38F; Dew Point: 38F; Wind: NNE at 10G18 kts
Sea-level pressure: 29.51 ins. Hg, falling, then less quickly
Visibility: 1/8 mile, fog
6-hr Max temp: 41F
6-hr Min temp: 38F
6-hr Precip: 0.19 ins.
6-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1755 W2 X 1/8L-F 994/38/38/0310G18/951/ 8//// 60019
56046 10041 20038

SUMMARY FOR FRIDAY, JANUARY 4, 2019 

TEMPERATURE (DEGREES F)
MAX…..43   NORMAL…..34
MIN…..30   NORMAL…..18
MEAN….37   NORMAL…..26

DEPARTURE FROM 30-YEAR NORMAL…………………..+11
TOTAL DEPARTURE FOR THE MONTH…………………..+37 [+9.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..28   DEPARTURE……..-11
TOTAL HEATING UNITS FOR THE MONTH………….117   DEPARTURE……..-37
TOTAL HEATING UNITS FOR THE SEASON………..2413   DEPARTURE……..-45
TOTAL HEATING UNITS LAST SEASON TO DATE……2329   DIFFERENCE…….+84

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..29 SW  AT 11:23 A.M.
                   AERO…………………….29 SW  AT 11:16 A.M.
                   ASOS…………………….29 SW  AT 11:22 A.M.
                   DAVIS……………………30 SW  AT 11:22 A.M. RMY 29
FASTEST MILE FOR YESTERDAY………………….23 SW  AT 10:32 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….23 SW  AT 10:35 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………23 SSW AT 10:35 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..12.5 SW
                   ASOS…………………..12.6
                   DAVIS………………….12.3 SW [235 deg.]   

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.04  DEPARTURE…….-0.10
                         ASOS…………..0.04
TOTAL PRECIPITATION FOR THE MONTH……….0.86  DEPARTURE…….+0.28
                         ASOS…………..0.84
TOTAL PRECIPITATION FOR THE YEAR………..0.86  DEPARTURE…….+0.28
                         ASOS…………..0.84 

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……..-0.5
TOTAL SNOWFALL FOR THE MONTH…………..Trace  DEPARTURE……..-2.3
TOTAL SNOWFALL FOR THE SEASON……………7.7  DEPARTURE…….-10.6

PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 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

12/01 41/28/35/-2/0.00/0.0/391/70          20 NNW AERO 18 NNW RMY N/A
12/02 52/35/44/+8/1.04/0.0/000/00          28 ESE AERO 25 ESE RMY 27
12/03 54/38/46/+10/0.00/0.0/178/32         35 W   AERO 35 W   RMY 38
12/04 38/23/31/-4/0.00/0.0/516/93          30 WNW AERO 31 WNW RMY 33
12/05 33/18/26/-9/0.00/0.0/432/78          16 NNW AERO 15 NNW RMY N/A
12/06 37/24/31/-4/0.00/0.0/354/64          29 W   AERO 28 W   RMY 30
12/07 37/21/29/-5/0.00/0.0/546/99          29 NW  AERO 29 NW  RMY 32
12/08 27/15/21/-13/0.00/0.0/518/94         28 NW  AERO 27 NW  RMY 29
12/09 34/17/26/-8/0.00/0.0/391/71          23 SSW AERO 21 SSW RMY 22
12/10 36/22/29/-4/0.00/0.0/544/99          24 NNW AERO 23 NNW RMY 22
12/11 36/17/27/-6/0.00/0.0/543/99          16 WSW AERO 14 WSW RMY N/A
12/12 35/18/27/-6/0.00/0.0/471/86          30 NW  AERO 29 NW  RMY M
12/13 31/16/24/-8/0.00/0.0/088/16          16 NNE AERO 12 SE  RMY N/A
12/14 46/28/37/+5/0.00/0.0/399/73          28 SSW AERO 28 SSW RMY 29
12/15 49/33/43/+11/0.06/0.0/000/00         28 NE  AERO 27 NE  RMY 30
12/16 40/37/39/+8/…./0.0/000/00          38 NE  AERO 38 NE  RMY 40
12/17 37/32/35/+4/…./0.0/000/00          39 NNE AERO 37 NNE RMY N/A
12/18 34/20/27/-4/0.02/0.1/456/86          48 NW  AERO 55 NW  RMY 48
12/19 38/17/28/-2/0.00/0.0/486/92          23 WNW AERO 23 WNW RMY N/A
12/20 47/30/39/+9/0.00/0.0/300/57          23 SW  AERO 22 SW  RMY N/A
12/21 62/43/53/+23/…./0.0/000/00         60 SSE AERO 62 SSE RMY 63
12/22 54/31/43/+14/…./0.0/108/21         41 W   AERO 45 W   RMY 43
12/23 38/27/33/+4/0.00/0.0/522/99          30 WNW AERO 32 WNW RMY N/A
12/24 34/27/31/+2/0.01/T/108/21            21 W   AERO 21 W   RMY N/A
12/25 35/23/29/+1/0.00/0.0/516/98          28 NW  AERO 28 NW  RMY 29
12/26 36/20/28/0/0.00/0.0/480/91           24 NW  AERO 24 NW  RMY 25
12/27 35/26/31/+3/0.00/0.0/…/..          23 NW  AERO 22 NW  RMY N/A
12/28 54/30/42/+14/…./0.0/…/..         44 SSW AERO M  M   RMY 47
12/29 54/30/42/+15/…./…/…/..         38 WNW AERO 38 WNW RMY 38
12/30 33/23/28/+1/0.00/0.0/…/..          24 NNW AERO 21 NNW RMY 17
12/31 41/28/35/+8/…./T/…/..            33 SSE AERO 32 SSE RMY N/A

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 Low temp since midnight is 36F; normal low is 18F

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

RECORDS FOR JANUARY 5
HIGH 61F IN 2007
LOW -9F IN 1981
PRECIP 0.98 INS. IN 1993
SNOW 4.5 INS. IN 1891
PEAK GUST 70 MPH WNW IN 1959

RECORDS FOR JANUARY 6
HIGH 66F IN 2007
LOW -14F IN 1896
PRECIP 3.10 INS. IN 1889 [RECORD FOR MONTH] SNOWFALL 7.5 INS. IN 1893
PEAK GUST 70 MPH WNW IN 1959

TODAY’S REPORT PREPARED BY:  Lizzy Suzedell

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Blue Hill Observatory & Science Center · Legal

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

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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