Sunday, January 26, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 26, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
PARTLY CLOUDY SKIES AND FAIR WEATHER ATOP
GREAT BLUE HILL….
Today we observed decent visibility, with 70 miles
being seen at the 10 A.M. observation. Skies were
partly cloudy on average. Wind is westerly, currently
clocking in at almost 20 mph. The highest gust so far
today is 30 mph this afternoon. Rain amounts from
yesterday were measured to be 0.57 inches, all of it
confirmed to have fallen yesterday.
Topics of concern are the rain and snowfall amounts
for this month. The rainfall total is 1.46 inches,
2.08 inches below the average rain total. Snowfall
for this month is considerably low, being only 4.2
inches. That is 9.7 inches below the normal monthly
snowfall total.
The high so far today is 46F, 12 degrees above the normal
high of 34F. The low since midnight is 37F, 20 degrees
above the normal low of 17F.
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus
Temperature: 38F; Dew Point: 37F; Wind: W at 14 kts
Sea-level pressure: 29.70 ins. Hg, rising then more slowly
Visibility: 65 miles
6-hr Max temp: 48F
6-hr Min temp: 38F
24-hr Precip: 0.57 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 E20 BKN 65 059/38/37/2714/970/ 8/400 70057
53007 10048 20038
10 A.M.
Weather: Scattered stratocumulus
Temperature: 40F; Dew Point: 33F; Wind: W at 12G21 kts
Sea-level pressure: 29.71 ins. Hg, falling then rising
Visibility: 70 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 20 SCT 70 060/40/33/2712G21/971/ 8/400 51004
1 P.M.
Weather: Scattered stratocumulus and cirrostratus
Temperature: 45F; Dew Point: 30F; Wind: W at 13G24 kts
Sea-level pressure: 29.65 ins. Hg, falling steadily
Visibility: 65 miles
6-hr Max temp: 46F
6-hr Min temp: 37F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 20 SCT 250 SCT 65 040/45/30/2613G24/965/
8/408 56020 10046 20037
SUMMARY FOR SATURDAY, JANUARY 25, 2020
TEMPERATURE (DEGREES F)
MAX…..50 NORMAL…..34
MIN…..36 NORMAL…..17
MEAN….43 NORMAL…..25
DEPARTURE FROM 30-YEAR NORMAL…………………+18
TOTAL DEPARTURE FOR THE MONTH………………..+197 [+7.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………22 DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE MONTH…………..792 DEPARTURE……-197
TOTAL HEATING UNITS FOR THE SEASON…………3043 DEPARTURE……-250
TOTAL HEATING UNITS LAST SEASON TO DATE…….3244 DEPARTURE……-201
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..41 ESE AT 8:26 P.M.
AERO…………………….41 ESE AT 8:26 P.M.
ASOS…………………….38 E AT 6:48 P.M.
DAVIS……………………41 ESE AT 6:34 P.M. RMY 40
FASTEST MILE FOR YESTERDAY………………….28 ESE AT 6:38 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….28 ESE AT 8:22 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………30 E AT 6:42 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..17.2 E
ASOS…………………..16.8
DAVIS………………….16.8 E [110 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.57 DEPARTURE……+0.43
ASOS…………..0.62
TOTAL PRECIPITATION FOR THE MONTH……….1.46 DEPARTURE……-2.08
ASOS…………..1.54
TOTAL PRECIPITATION FOR THE YEAR………..1.46 DEPARTURE……-2.08
ASOS…………..1.54
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.6
TOTAL SNOWFALL FOR THE MONTH…………….4.2 DEPARTURE…….-9.7
TOTAL SNOWFALL FOR THE SEASON…………..24.2 DEPARTURE…….-5.7
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 38/30/34/+7/…./0.0/…./.. 39 W AERO 38 W RMY 41
01/02 46/29/38/+11/0.00/0.0/…./.. 28 SW AERO 28 SW RMY 30
01/03 46/40/43/+17/0.00/0.0/…./.. 21 SW AERO 18 SW RMY N/A
01/04 46/36/41/+15/…./0.0/…./.. 16 NNW AERO 16 NNW RMY N/A
01/05 36/24/30/+4/…./0.5/…./.. 43 NW AERO 46 NW RMY 43
01/06 33/23/28/+2/T/T/…./.. 26 W AERO 21 W RMY N/A
01/07 38/29/34/+8/…./0.4/…/.. 30 WSW AERO 28 WSW RMY N/A
01/08 39/22/31/+5/…./0.4/…/.. 50 W AERO 46 WNW RMY 47
01/09 28/16/22/-4/…./0.0/…/.. 43 WNW AERO 40 WNW RMY N/A
01/10 48/23/36/+11/T/…./0.0/…/.. 37 SW AERO 37 SW RMY 39
01/11 65/46/56/+31/…./0.0/…/.. 53 SSW AERO 53 SSW RMY N/A
01/12 68/36/52/+27/…./0.0/…/.. 60 SSW AERO 62 SSW RMY N/A
01/13 39/31/35/+10/0.01/T/…/.. 21 NE AERO 20 NE RMY N/A
01/14 38/31/35/+10/0.01/0.0/…/.. 16 W AERO 15 W RMY N/A
01/15 48/35/42/+17/0.00/0.0/…/.. 24 W AERO 23 W RMY 24
01/16 42/24/33/+8/0.06/T/…/.. 54 W AERO 52 W RMY 59
01/17 24/10/17/-8/0.00/0.0/…./.. 50 NW AERO 48 NW RMY N/A
01/18 28/8/18/-7/0.35/2.8/…./.. 28 WSW AERO 24 ESE RMY N/A
01/19 40/21/31/+6/0.02/0.2/…./.. 44 W AERO 44 W RMY 42
01/20 26/12/19/-6/0.00/0.0/…./.. 33 NW AERO 32 NW RMY N/A
01/21 24/10/17/-8/0.00/0.0/…./.. 22 NW AERO 21 NW RMY N/A
01/22 34/13/24/-1/0.00/0.0/…./.. 16 SW AERO 16 SW RMY N/A
01/23 46/26/36/+11/0.00/0.0/…./.. 21 SW AERO 20 SW RMY 19
01/24 44/31/38/+13/0.00/0.0/…./.. 21 ENE AERO 17 ENE RMY N/A
01/25 50/36/43/+18/0.57/0.0/…./.. 41 ESE AERO 41 ESE RMY 40
01/26 The low since midnight is 37F, daily normal minimum is 17F
DAILY RECORDS FOR JANUARY
1/11/20: DAILY RECORD MAXIMUM TEMPERATURE OF 65F,
BREAKS PREVIOUS RECORD OF 60F SET IN 1975.
1/11/20: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 46F,
BREAKS PREVIOUS RECORD OF 40F SET IN 1983.
1/12/20: DAILY RECORD MAXIMUM TEMPERATURE OF 68F,
BREAKS PREVIOUS RECORD OF 60 SET IN 2018.
TIES HIGHEST MAXIMUM TEMPERATURE FOR JANUARY,
MATCHES 68F SET ON 1/26/1950.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JANUARY 26
HIGH 68F IN 1950 [RECORD FOR MONTH]
LOW -5F IN 1920
PRECIP 1.60 INS. IN 1958
SNOW 9.0 INS. IN 1898
WIND 90e MPH SE IN 1978
RECORDS FOR JANUARY 27
HIGH 63F IN 1974
LOW -12F IN 1924
PRECIP 1.59 INS. IN 1996
SNOWFALL 25.2 INS. IN 2015 [RECORD FOR MONTH]
PEAK GUST 91 MPH SSE IN 1996
TODAY’S REPORT PREPARED BY: Benjamin Turner
