Thursday, November 20, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 20, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
TEMPERATURES MODERATE AFTER VERY COLD DAY YESTERDAY
THE DAY AVERAGED 14 DEGREES COLDER THAN NORMAL
SOUTHWEST WINDS BRING RISING TEMPERATURES INTO 40’S TODAY
Southwest winds were increasing today gusting past 30 MPH
early this afternoon and temperatures warmed quickly into
the middle and upper 40’s with the relative humidity
dropping to near 35%. The much milder day today with the
the temperature up to 47 degrees early this afternoon
follows a very cold yesterday with a high of only 35F.
The normal high for today is 49 degrees.
Today’s Observations:
7 A.M.
Weather: Scattered altocumulus (2 levels), altocumulus and few
altocumulus lenticularis except overhead
Temperature: 31F; Dew Point: 20F; Wind: SW at 12 kts
Sea-level pressure: 29.92 ins. Hg, falling then more slowly
Visibility: 40 miles, except 45 miles WNW, distant haze
6-hr max temp: 31F
6-hr min temp: 28F
24-hr precip: 0.00 inch
BHO SA 1155 85 SCT 120 SCT 40 132/31/20/2212/992/ AC/FEW ACSL
ALQDS XCPT OVHD VSBY WNW 45 DSNT HZ/ 8/070 56014 10031 20028
10 A.M.
Weather: Scattered altocumulus lenticularis
Temperature: 39F; Dew Point: 22F; Wind: SW at 110G21 kts
Sea-level pressure: 29.88 ins. Hg, falling then more quickly
Visibility: 40 miles, except 45 miles WNW, distant haze
BHO SA 1455 85 SCT 40 119/39/22/2211G21/988/ PTCHS ACSL
VSBY WNW 45 DSNT HZ ALQDS/ 8/040 58013
1 P.M.
Weather: Scattered cumulus, scattered cirrus, cumulus all quadrants,
cirrus SE-S
Temperature: 46F; Dew Point: 21F; Wind: SSW at 17G28 kts
Sea-level pressure: 29.78 ins. Hg, falling then more rapidly
Visibility: 35 miles, except 45 miles WNW, distant haze
6-hr max temp: 47F
6-hr min temp: 31F
6-hr precip: 0.00 inches
BHO SA 1755 55 SCT 250 SCT 35 084/46/21/2117G28/978/
CU ALQDS CI DSNT SE-S VSBY WNW 45 DSNT HZ PK WND 2330/40/
8/101 58035 10047 20031
SUMMARY FOR WEDNESDAY, NOVEMBER 19, 2014
TEMPERATURE (DEGREES F)
MAX…..35 NORMAL…..49
MIN…..19 NORMAL…..33
MEAN….27 NORMAL…..41
DEPARTURE FROM 30-YEAR NORMAL……………………-14
TOTAL DEPARTURE FOR THE MONTH……………………-32 [-1.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..38 DEPARTURE………..+7
TOTAL HEATING UNITS FOR THE MONTH………….439 DEPARTURE……….+32
TOTAL HEATING UNITS FOR THE SEASON…………861 DEPARTURE………-109
TOTAL HEATING UNITS LAST SEASON TO DATE…….865 DIFFERENCE……… -4
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………31 WSW AT 5:24 A.M.
ASOS…………………..35 WSW AT 2:05 A.M.
DAVIS………………….33 W AT 2:41 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..25 W AT 8:43 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..24 W AT 8:43 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….22 W AT 5:25 A.M.
AVERAGE WIND SPEED AND DIRECTION…………14.1
ASOS…………………13.9
DAVIS………………..12.6 WSW (240 degrees)
* Last of several occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE…..-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.70 DEPARTURE…..+0.71
ASOS…………..3.73
TOTAL PRECIPITATION FOR THE YEAR……….45.25 DEPARTURE…..-1.51
ASOS………….45.60
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH…………….5.3 DEPARTURE……+4.5
TOTAL SNOWFALL FOR THE SEASON……………5.3 DEPARTURE……+4.2
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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
11/1 45/36/41/-5/0.79/0.0/000/00 35 NNE RMY N/A
11/2 37/32/35/-11/0.29/1.8/000/00 46 NW RMY 49
11/3 50/30/45/-6/0.00/0.0/584/95 39 WNW RMY 43
11/4 61/44/53/+8/0.00/0.0/208/34 28 SSW RMY 32
11/5 66/50/58/+13/0.00/0.0/006/01 29 SSW RMY N/A
11/6 52/45/49/+4/0.58/0.0/000/00 23 NE RMY 24
11/7 46/34/40/-5/0.00/0.0/079/13 39 NW RMY 42
11/8 47/30/39/-5/0.00/0.0/555/92 24 W RMY 25
11/9 56/38/47/+3/0.00/0.0/…/.. 23 SSW RMY N/A
11/10 58/40/49/+5/0.00/0.0/…/.. 17 S RMY 20
11/11 61/43/52/+9/0.00/0.0/…/.. 22 S RMY 25
11/12 59/40/50/+7/0.00/0.0/…/.. 22 W RMY 25
11/13 49/32/41/-2/0.08/T/…/.. 21 NW RMY N/A
11/14 41/27/34/-8/0.00/0.0/…/.. 23 NW RMY 27
11/15 37/24/31/-11/0.00/0.0/…/.. 23 NW RMY 23
11/16 39/26/33/-9/0.00/0.0/…/.. 17 S RMY 19
11/17 52/34/43/+2/1.67/0.0/000/00 29 ENE RMY 31
11/18 44/23/34/-7/0.00/0.0/…/.. 33 W RMY 39
11/19 35/19/27/-14/0.00/0.0/…/.. 31 WSW RMY N/A
11/20 morning low temp: 28F since midnight; normal low now 32F
DAILY RECORDS FOR NOVEMBER 2014:
11/2 – A NEW RECORD DAILY SNOWFALL: 1.8 INCHES;
surpasses the previous record of 0.2 ins. in 1906, 1951
11/14 – DAILY SNOWFALL RECORD EQUALED: 3.5 INCHES;
ties previous record on this date in 1997
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR NOVEMBER 20
HIGH 72 IN 1953
LOW 10 IN 1894
PRECIP 2.78 INS IN 1988
SNOWFALL 3.0 INS IN 1897
PEAK GUST 73e S IN 1950
RECORDS FOR NOVEMBER 21
HIGH 69 IN 1931
LOW 10 IN 1888
PRECIP 2.60 INS IN 1950
SNOWFALL 4.0 INS IN 1929
PEAK GUST 69 NW IN 1989
TODAY’S REPORT PREPARED BY: Robert Skilling
