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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JANUARY 19, 2015 DR. MARTIN LUTHER KING JR DAY
ALL TIMES ARE IN EASTERN STANDARD TIME
0.16 INCHES FALL ON GREAT BLUE HILL OVERNIGHT,
WINDS GUST TO 47 MPH FROM THE SE, DRY CONDITIONS FOR
MLK JR DAY
Heavy rain and some mixed precipitation just to our W
brought some significant totals to central and western
Massachusetts; however, a mere 0.16 inches of rain
were recorded in our official standard gauge. The bulk
of the precipitation fell between 9:00 PM EST and
midnight, with otherwise traces of rain falling
during showers earlier in the day.
Yesterday’s maximum temperature of 50F was well above
our daily norm of 33F. By midnight last night, temperatures
were still in the mid 40s, potentially bringing today’s
high temperature.
By sunrise this morning, skies were mostly clear with the
remnants of yesterday’s front moving offshore. Layers of
altocumulus and stratocumulus have moved the region allowing
for partly to mostly sunny conditions to prevail for most
of today. Winds that were from the S to SE yesterday have
swung around today to the W and have remained breezy, gusting
into the lower 30 MPH range. A maximum temperature of 41F had been
recorded by the 1:00 PM EST observation.
Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus distant in all directions,
altocumulus lenticularis distant SSE-N
Temperature: 33F; Dew Point: 32F; Wind: W at 12 kts
Sea-level pressure: 29.65 ins. Hg, steady, then rising
Visibility: 35 miles
6-hr max temp: 40F
6-hr min temp: 33F
24-hr precip: 0.16
BHO SA 1155 CLR 35 040/33/32/2812/965/ FEW AC DSNT ALQDS ACSL DSNT SSE-N/
8/040 53011 ASOS 70022 MANUAL 70016 10040 20033
10 A.M.
Weather: Broken altocumulus, few cumulus distant SSW-N,
few cirrus distant offshore NE-ESE , altocumulus lenticularis W-N
Temperature: 38F; Dew Point: 31F; Wind: W at 13G19 kts
Sea-level pressure: 29.67 ins. Hg, rising, then steady
Visibility: 45 miles
BHO SA 1455 E140 BKN 45 047/38/31/2713G19/967/ VSBY N-NNE 60 MI FEW CU
DSNT SSW-N FEW CI DSNT OFFSHR NE-ESE ACSL W-N/ 8/131 51007
1 P.M.
Weather: Broken cumulus, broken stratocumulus
Temperature: 38F; Dew Point: 28F; Wind: W at 15G22 kts,
Sea-level pressure: 29.63 ins. Hg, falling then falling more slowly
Visibility: 60 miles
6-hr max temp: 41F
6-hr min temp: 33F
BHO SA 1755 E44 BKN 50 BKN 60 033/38/28/2815G22/963/ SCSL W-NE/
8/800 56007 10041 20033
SUMMARY FOR SUNDAY, JANUARY 18, 2015
TEMPERATURE (DEGREES F)
MAX…..50 NORMAL…..33
MIN…..19 NORMAL…..17
MEAN….35 NORMAL…..25
DEPARTURE FROM 30-YEAR NORMAL…………………….+10
TOTAL DEPARTURE FOR THE MONTH…………………….-45 [-2.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..30 DEPARTURE……….-10
TOTAL HEATING UNITS FOR THE MONTH………….754 DEPARTURE……….+46
TOTAL HEATING UNITS FOR THE SEASON………..2814 DEPARTURE………-198
TOTAL HEATING UNITS LAST SEASON TO DATE……2930 DIFFERENCE……..-116
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………47 SE AT 8:47 P.M.
ASOS…………………..50 S AT 9:35 P.M.
DAVIS………………….49 SE AT 8:47 P.M. RMY 52
FASTEST MILE FOR YESTERDAY………………..39 SE AT 9:34 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..36 S AT 9:36 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….35 SE AT 9:08 P.M.
AVERAGE WIND SPEED AND DIRECTION…………21.2 S
ASOS…………………20.3
DAVIS………………..19.0 S [169 degrees]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.16 DEPARTURE…..+0.02
ASOS…………..0.22
TOTAL PRECIPITATION FOR THE MONTH……….1.74 DEPARTURE…..-0.83
ASOS…………..1.82
TOTAL PRECIPITATION FOR THE YEAR………..1.74 DEPARTURE…..-0.83
ASOS…………..1.82
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……-0.5
TOTAL SNOWFALL FOR THE MONTH…………….4.9 DEPARTURE……-5.2
TOTAL SNOWFALL FOR THE SEASON…………..15.9 DEPARTURE…..-10.2
PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
1/1 31/18/25/-2/0.00/0.0/544/99 29 SSW RMY 30
1/2 37/26/32/+5/0.00/0.0/314/57 35 WSW RMY 38
1/3 34/21/28/+2/0.67/2.5/017/03 25 SE RMY 26
1/4 51/33/42/+16/0.48/0.0/000/00 30 SSW RMY N/A
1/5 46/13/30/+4/0.00/0.0/542/98 48 W RMY 54
1/6 15/10/13/-13/0.02/0.4/000/00 29 W RMY N/A
1/7 22/01/12/-14/0.01/0.3/394/71 43 WNW RMY 47
1/8 16/-5/6/-20/0.00/0.0/539/97 39 WNW RMY N/A
1/9 27/16/22/-4/0.08/0.9/…/.. 35 WSW RMY 38
1/10 22/11/17/-8/0.00/0.0/541/97 26 WNW RMY 27
1/11 31/9/20/-5/45/0.00/0.0/123/22 26 SSW RMY N/A
1/12 36/31/34/+9/0.23/T/000/00 29 NNW RMY N/A
1/13 33/11/22/-3/0.00/0.0/524/93 30 NNW RMY 29
1/14 22/11/17/-8/T/T/000/00 18 NNW RMY 16
1/15 27/20/24/-1/0.09/0.8/000/00 20 WSW RMY 22
1/16 35/12/24/-1/T/T/…/.. 46 WSW RMY 50
1/17 21/5/13/-12/0.00/0.0/…/.. 30 WNW RMY N/A
1/18 50/19/35/+10/0.16/0.0/000/00 47 SE RMY 52
1/19 morning low temp: 33F since midnight; normal low is now 17F
DAILY RECORDS FOR JANUARY 2015
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JANUARY 19
HIGH 59F IN 1973
LOW -11F IN 1887
PRECIP 2.34 INS. IN 1936
SNOWFALL 10.5 INS. IN 1936
PEAK GUST 93e MPH WNW IN 1943
RECORDS FOR JANUARY 20
HIGH 59F IN 1951
LOW -9F IN 1901
PRECIP 1.95 INS. IN 1978
SNOWFALL 19.0 INS. IN 1978 [RECORD FOR MONTH]
PEAK GUST 76e MPH NE IN 1978
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
