Thursday, January 26, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JANUARY 26, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
LIGHT RAIN SHOWER LEAVES 0.01 IN. OF PRECIP,
PRESSURE KEEPS FALLING
Light drizzle early this morning left just a trace of
precip. for the 7:00AM ob. At 1:00PM, rainfall measured
0.01 in. after a brief rain shower passed BHO after noon.
Temps. rose to a max. of 47F but had started falling by
1:00PM with the approaching cold front. Winds began to
gust 25-30 MPH.
Pressure has been slow to rebound after the coastal storm
earlier this week. The month’s lowest pressure so far has
occurred today.
Today’s Observations:
7 A.M.
Weather: Few cumulus E-SSE, overcast altostratus
Temperature: 38F; Dew Point: 34F; Wind: SSW at 11 kts
Sea-level pressure: 29.43 ins. Hg, falling, then more slowly
Visibility: 20 miles, distant fog in all directions
6-hr Max temp: 38F
6-hr Min temp: 36F
24-hr precip: Trace
24-hr snowfall: 0.00 in.
BHO SA 1155 E100 OVC 20 965/38/34/2011/943/ FEW CU E-SSE DSNT
FG ALQDS/ 8/12/ 56023 10038 20036
10 A.M.
Weather: Broken altostratus
Temperature: 42F; Dew Point: 36F; Wind: SW at 9 kts
Sea-level pressure: 29.38 ins. Hg, falling, then more slowly
Visibility: 40 miles, distant fog in all directions
BHO SA 1455 E140 BKN 40 948/42/36/2209/938/ DSNT FG ALQDS/
8/01/ 56017
1 P.M.
Weather: Scattered stratocumulus, broken stratus
Temperature: 45F; Dew Point: 40F; Wind: S at 19G22 kts
Sea-level pressure: 29.23 ins. Hg, falling, then more quickly
Visibility: 70 miles, except 30 miles NE-S, distant fog NE-S
6-hr Max temp: 47F
6-hr Min temp: 38F
6-hr precip: 0.01 in.
6-hr snowfall: 0.0 in.
BHO SA 1755 54 SCT E64 BKN 70 899/45/40/1819G22/923/ VSBY NE-S 30
DSNT FG NE-S/ 8/600 58049 MANUAL 6001/ ASOS 60002 10047 20038
SUMMARY FOR WEDNESDAY, JANUARY 25, 2017
TEMPERATURE (DEGREES F)
MAX…..42 NORMAL…..34
MIN…..32 NORMAL…..17
MEAN….37 NORMAL…..25
DEPARTURE FROM 30-YEAR NORMAL…………………..+12
TOTAL DEPARTURE FOR THE MONTH………………….+187 [+7.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..28 DEPARTURE………-12
TOTAL HEATING UNITS FOR THE MONTH………….802 DEPARTURE……..-187
TOTAL HEATING UNITS FOR THE SEASON………..2834 DEPARTURE……..-459
TOTAL HEATING UNITS LAST SEASON TO DATE……2573 DIFFERENCE…….+261
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….41 WNW AT 11:42 A.M.
ASOS……………………42 WNW AT 11:42 A.M.
DAVIS…………………..38 NW AT 11:41 A.M. RMY 38
FASTEST MILE FOR YESTERDAY…………………29 WNW AT 11:40 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………28 WNW AT 11:42 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..28 NW AT 11:41 A.M.
AVERAGE WIND SPEED AND DIRECTION………….16.5 WNW
ASOS………………….16.0
DAVIS…………………14.9 NW [310 deg.]
*last of multiple occurances
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…TRACE DEPARTURE……-0.14
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….5.29 DEPARTURE……+1.75
ASOS…………..5.65
TOTAL PRECIPITATION FOR THE YEAR………..5.29 DEPARTURE……+1.75
ASOS…………..5.65
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.6
TOTAL SNOWFALL FOR THE MONTH……………11.5 DEPARTURE…….-2.4
TOTAL SNOWFALL FOR THE SEASON…………..19.3 DEPARTURE……-10.6
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
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/+3/0.18/0.0/369/66 35 SE AERO 37 SE RMY N/A
1/11 53/40/47/+22/0.13/0.0/358/64 51 SSW AERO 48 SSW RMY 57
1/12 59/42/51/+26/0.15/0.0/118/21 37 SSW AERO 40 S RMY 40
1/13 55/23/39/+14/0.00/0.0/535/95 39 WNW AERO 43 WNW RMY 42
1/14 30/14/22/-3/0.00/0.0/345/61 20 SSW AERO 20 SSW RMY 22
1/15 35/23/29/+4/0.00/0.0/555/98 28 NW AERO 28 NW RMY 28
1/16 40/22/31/+6/0.00/0.0/540/95 28 SW AERO 25 SW RMY 27
1/17 40/29/35/+10/0.27/T/257/45 23 E AERO 23 E RMY 25
1/18 38/31/30/+10/0.29/T/…/.. 30 ENE AERO 29 ENE RMY 26
1/19 44/30/37/+12/0.00/T/…/.. 21 NNW AERO 20 NNW RMY 20
1/20 40/30/35/+10/T/0.0/…/.. 17 NNW AERO 17 NNW RMY N/A
1/21 54/35/45/+20/T/0.0/…/.. 29 W AERO 29 W RMY 28
1/22 46/36/41/+16/0.14/T/…/.. 31 ENE AERO 30 ENE RMY N/A
1/23 36/33/35/+10/0.49/0.3/…/.. 56 NE AERO 58 NE RMY N/A
1/24 40/32/36/+11/1.48/0.0/…/.. 62 NE AERO 60 NE RMY 60
1/25 42/32/37/+12/…./0.0/…/.. 41 WNW AERO 40 WNW RMY 38
1/26 Low temp since midnight is 36F; 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 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: Cecilia Borries-Strigle
