Monday, October 26, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, OCTOBER 26, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
CLOUDY AND COOL WITH PERIODS OF DRIZZLE THIS AFTERNOON…
A rather gloomy day today with plenty of cloud cover and a
rather raw easterly flow. It was dry all through the morning
hours, but periods of drizzle have developed early this
afternoon. It has been enough to get the ground wet at times,
but so far it hasn’t been measurable.
A steady east wind this morning has become more light and at
times variable, generally varying between the east and
southeast.
The pressure has been dropping through the day as well,
indicative of high pressure moving out of the region.
The high so far today is 52F, this is 5 degrees below the
daily normal maximum of 57F. The low since midnight is 43F,
which is 4 degrees above the daily normal minimum of 39F.
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus
Temperature: 47F; Dew Point: 38F; Relative Humidity: 70%
Wind: E at 8 kts
Sea-level pressure: 30.32 ins. Hg: falling, then rising
Visibility: 30
6-hr Max temp: 47F
6-hr Min temp: 43F
24-hr Precip: 0.01 ins.
BHO SA 1155 E30 OVC 30 266/47/38/0808/032/ VIRGA DSNT SW-NW-NNE
AND E/ 8/5// 55001 70001 10047 20043
10 A.M.
Weather: Overcast stratocumulus, lower clouds visible distant
W-NW
Temperature: 50F; Dew Point: 42F; Relative Humidity: 73%
Wind: ESE at 9 kts
Sea-level pressure: 30.28 ins. Hg: steady, then falling
Visibility: 25 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E20 OVC 25 254/50/42/1009/028/ LWR CLDS VSBL
DSNT W-NW/ 8/5// 58012
1 P.M.
Weather: Overcast stratus, light drizzle
Temperature: 51F; Dew Point: 47F; Relative Humidity: 85%
Wind: ESE at 5 kts, wind light
Sea-level pressure: 30.22 ins. Hg: falling, then more slowly
Visibility: 4 miles, fog
6-hr Max temp: 52F
6-hr Min temp: 47F
6-hr Precip: Trace
BHO SA 1755 E10 OVC 4L-F 234/51/47/1105/022/ VSBY 6 N-NE
L-B40 WND LGT/ 8/6// 56020 6000/ 10052 10047
SUMMARY FOR SUNDAY, OCTOBER 25, 2020
TEMPERATURE (DEGREES F)
MAX…..50 NORMAL…..57
MIN…..40 NORMAL…..40
MEAN….45 NORMAL…..49
DEPARTURE FROM 30-YEAR NORMAL……………. -4
TOTAL DEPARTURE FOR THE MONTH…………….+94 [+3.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY………….20 DEPARTURE….. -6
TOTAL HEATING UNITS FOR THE MONTH…………216 DEPARTURE….-100
TOTAL HEATING UNITS FOR THE SEASON………..314 DEPARTURE….-144
TOTAL HEATING UNITS LAST SEASON TO DATE……373 DEPARTURE…..-59
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………. 0 DEPARTURE…… 0
TOTAL COOLING UNITS FOR THE MONTH…………. 1 DEPARTURE….. -4
TOTAL COOLING UNITS FOR THE SEASON………..831 DEPARTURE….+229
TOTAL COOLING UNITS LAST SEASON TO DATE……682 DEPARTURE….+149
PEAK WIND GUST FOR YESTERDAY (MPH)
420C/Official……………19 NNW AT 6:37 A.M.
AEROVANE (south tower)……19 NNW AT 6:38 A.M.
ASOS……………………19 NW AT 6:55 A.M
DAVIS #1………………..20 NNW AT 6:55 A.M
DAVIS #2 (south tower)……19 N AT 6:38 A.M
RMY…………………….N/A
MERLIN………………….N/A
FASTEST MILE FOR YESTERDAY…………………14 E AT 11:55 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………14 E AT 11:57 P.M
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…………..15 E AT 11:56 P.M
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE…………..14 N AT 6:56 A.M
AVERAGE WIND SPEED AND DIRECTION…………. 9.6 E [230 total miles]
ASOS………………….10.1
DAVIS #1………………10.2 NE [053 deg.]
DAVIS #2……………… 9.9 NE [047 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01 DEPARTURE….-0.15
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….4.21 DEPARTURE….+0.46
ASOS…………..4.19
TOTAL PRECIPITATION FOR THE YEAR……….38.63 DEPARTURE….-4.20
ASOS………….39.40
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
10/01 75/56/66/+9/0.00/591/84 28 SW AERO 28 SW RMY N/A
10/02 63/49/56/-1/0.02/203/29 20 NW AERO 21 NW RMY 20
10/03 65/45/55/-1/0.00/676/97 19 WNW AERO 19 WNW RMY 19
10/04 65/45/55/-1/0.00/659/95 17 ESE AERO 18 ESE RMY 18
10/05 62/52/57/+1/0.00/277/40 17 ENE AERO 17 ENE RMY N/A
10/06 69/51/60/+5/0.00/503/73 28 S AERO 28 S RMY 29
10/07 73/50/62/+7/0.14/316/46 76 W AERO 74 W RMY 70 TSTM
10/08 61/42/52/-2/0.00/676/99 41 W AERO 41 W RMY N/A
10/09 60/37/49/-5/0.00/646/95 25 SSW AERO 28 SSW RMY N/A
10/10 75/52/64/+10/0.00/549/81 40 SSW AERO 40 SSW RMY 38
10/11 64/47/56/+3/0.00/574/85 32 NNW AERO 35 NNW RMY N/A
10/12 52/48/50/-3/T/000/00 28 E AERO 27 E RMY N/A
10/13 57/49/53/0/1.74/000/00 32 E AERO 33 E RMY N/A
10/14 67/47/57/+5/0.00/…/.. 23 WNW AERO 25 WNW RMY N/A
10/15 71/50/61/+9/0.00/…/.. 43 S AERO 46 S RMY 42
10/16 68/48/58/+7/1.00/…/.. 28 S AERO 30 S RMY N/A
10/17 56/39/48/-3/1.24/…/.. 35 WNW AERO 40 WNW RMY 37
10/18 60/46/53/+2/0.00/…/.. 20 ESE AERO 21 ESE RMY 20
10/19 61/46/54/+4/0.00/…/.. 16 ESE AERO 16 SSE RMY N/A
10/20 66/49/58/+8/0.00/…/.. 22 S AERO 22 S RMY 22
10/21 71/56/64/+14/0.06/…/.. 26 SSW AERO 26 SSW RMY 26
10/22 70/54/62/+13/0.00/…/.. 18 SSW AERO 17 SSW RMY N/A
10/23 68/52/60/+11/0.00/…/.. 18 ESE AERO 18 ESE RMY 18
10/24 68/42/55/+6/0.00/…/.. 32 NNW AERO 32 NNW RMY 32
10/25 50/40/45/-4/0.00/…/.. 19 NNW AERO 19 NNW RMY N/A
10/25 The low since midnight is 43, the daily normal low is 39F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 26
HIGH 80F IN 1963
LOW 24F IN 1933
PRECIP 1.72 INCHES IN 1894
SNOW 3.0 INCHES IN 1962
WIND 59 MPH SSE IN 1967
RECORDS FOR OCTOBER 27
HIGH 83F IN 1963
LOW 21F IN 1936
PRE 1.79 INCHES IN 1886
SNOW 2.5 INCHES IN 2011
WIND 54 MPH WNW IN 1968
TODAY’S REPORT PREPARED BY: Matt Douglas
