Saturday, January 25, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JANUARY 25, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
LOW CLOUDS AND CHILLY WITH AN INCREASING BREEZE
Other than a few small breaks to the east just after
sunrise, the sky has been cloudy all day today. The
clouds have continued to become lower into mid-afternoon
ahead of a band of rain expected tonight. Visibility was
as high as 30 miles early this morning, but it dropped
to just 8 miles by mid-day. Wind has been increasing
gusts approaching 30 kts by early afternoon. Also, the
pressure began falling more rapidly after the 1 PM
observation.
The high so far today is 41F, 7 degrees above the normal
high of 34F. The low since midnight is 35F, 18F degrees
above the normal low of 17F.
Today’s Observations:
7 A.M.
Weather: Broken stratocumulus, few lower stratocumulus,
few breaks in overcast east with a few higher clouds visible
Temperature: 37F; Dew Point: 34F; Wind: E at 15G21 kts
Sea-level pressure: 30.29 ins. Hg, falling then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 37F
6-hr Min temp: 36F
24-hr Precip: 0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow depth: Trace
BHO SA 1155 E25 OVC 30 256/37/34/0815G21/029/ FEW LWR SC
FEW BINOVC E HIER CLDS VSBL HAZY/ 8/57/ 56011 10037 20036
10 A.M.
Weather: Overcast stratus
Temperature: 39F; Dew Point: 38F; Wind: E at 12 kts
Sea-level pressure: 30.27 ins. Hg, falling
Visibility: 8 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E7 OVC 8 250/39/38/0812/027/ VSBY DCRSG/
8/6// 56006
1 P.M.
Weather: Overcast stratus
Temperature: 41F; Dew Point: 39F; Wind: E at 11 kts
Wind: Peak Gust 26 knots, east at 12:18 PM
Sea-level pressure: 30.16 ins. Hg, falling steadily
Visibility: 8 miles
6-hr Max temp: 41F
6-hr Min temp: 37F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow depth: Trace
BHO SA 1755 E5 OVC 8 215/41/39/0911/016/ PK WND 0826/18/
8/6// 57035 10041 20037
SUMMARY FOR FRIDAY, JANUARY 24, 2020
TEMPERATURE (DEGREES F)
MAX…..44 NORMAL…..34
MIN…..31 NORMAL…..17
MEAN….38 NORMAL…..25
DEPARTURE FROM 30-YEAR NORMAL…………………+13
TOTAL DEPARTURE FOR THE MONTH………………..+179 [+7.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………27 DEPARTURE…….-13
TOTAL HEATING UNITS FOR THE MONTH…………..770 DEPARTURE……-179
TOTAL HEATING UNITS FOR THE SEASON…………3021 DEPARTURE……-232
TOTAL HEATING UNITS LAST SEASON TO DATE…….3209 DEPARTURE……-188
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..21 ENE AT 2:45 P.M.
AERO…………………….17 ENE AT 2:58 P.M. *
ASOS…………………….19 ENE AT 2:45 P.M.
DAVIS……………………19 ENE AT 2:43 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….12 ENE AT 2:58 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………….14 E AT 10:53 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………14 ENE AT 2:58 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..10.2 ENE
ASOS……………………9.9
DAVIS…………………..9.9 NE [043 deg.]
* Last of several occurrences
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……….0.89 DEPARTURE……-2.51
ASOS…………..0.92
TOTAL PRECIPITATION FOR THE YEAR………..0.89 DEPARTURE……-2.51
ASOS…………..0.92
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH…………….4.2 DEPARTURE…….-9.1
TOTAL SNOWFALL FOR THE SEASON…………..24.2 DEPARTURE…….-5.1
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 The low since midnight is 35F, 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 25
HIGH 56F IN 2010
LOW -10F IN 1935
PRECIP 2.24 INS. IN 1979
SNOWFALL 12.5 INS. IN 1941
PEAK GUST 81 MPH WNW IN 1972
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
TODAY’S REPORT PREPARED BY: Mike Iacono
