Saturday, October 24, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, OCTOBER 24, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
WARMER THAN NORMAL TEMPERATURES CONTINUE DESPITE A
MAINLY CLOUDY SKY TODAY…
There was a brief period of sun this morning sandwiched
between cloudy stretches. Despite all the cloud cover,
temperatures have been able to reach the mid to upper
60s. With light winds, it’s making for a delightful
day to be outdoors.
A cold front is approaching the area however and virga
could be seen off to the west and northwest at the 1 P.M.
observation. This band of “rainfall” has since dried
up before reaching the Observatory, however it is the
leading edge of a much cooler air mass that will
overspread the region tonight and tomorrow.
The high so far today is 68F, 10 degrees above the daily
normal minimum of 58F. The low since midnight is 53F, 13
degrees above the normal low of 40F.
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, thin scattered cirrus
Temperature: 55F; Dew Point: 53F; Relative Humidity: 93%
Wind: S at 8 kts
Sea-level pressure: 29.95 ins. Hg: falling, then more slowly
Visibility: 20, thin fog
6-hr Max temp: 55F
6-hr Min temp: 53F
24-hr Precip: 0.00 ins.
BHO SA 1155 30 SCT 250 -SCT 20 142/55/53/1808/995/ THN F ALQDS/
8/501 57019 10055 20053
10 A.M.
Weather: Overcast Stratocumulus, breaks in overcast distant
ESE-SSE
Temperature: 63; Dew Point: 54F; Relative Humidity: 72%
Wind: SW at 8 kts
Sea-level pressure: 29.91 ins. Hg: falling, then more rapidly
Visibility: 25 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 E20 OVC 25 128/63/54/2308/991/ BINOVC DSNT ESE-SSE
HAZY/ 8/5// 58014
1 P.M.
Weather: Scattered stratocumulus, overcast stratocumulus,
breaks in overcast NE-S, higher clouds visible NE-S
Temperature: 67F; Dew Point: 57F; Relative Humidity: 70%
Wind: SW at 7 kts
Sea-level pressure: 29.86 ins. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 68F
6-hr Min temp: 55F
6-hr Precip: 0.00 inches
BHO SA 1755 20 SCT E 35 OVC 30 113/67/57/2207/986/ BINOVC NE-S
HIR CLDS VSBL NE-S VIRGA DSNT W-NW HAZY/ 8/581 58015 10068 20055
SUMMARY FOR FRIDAY, OCTOBER 23, 2020
TEMPERATURE (DEGREES F)
MAX…..68 NORMAL…..58
MIN…..52 NORMAL…..40
MEAN….60 NORMAL…..49
DEPARTURE FROM 30-YEAR NORMAL…………….+11
TOTAL DEPARTURE FOR THE MONTH…………….+92 [+3.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………. 5 DEPARTURE…..-11
TOTAL HEATING UNITS FOR THE MONTH…………186 DEPARTURE…..-97
TOTAL HEATING UNITS FOR THE SEASON………..284 DEPARTURE….-141
TOTAL HEATING UNITS LAST SEASON TO DATE……354 DEPARTURE…..-70
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……………18 ESE AT 7:09 P.M.
AEROVANE (south tower)……18 ESE AT 7:10 P.M.
ASOS……………………18 SE AT 7:11 P.M
DAVIS #1………………..19 SE AT 7:10 P.M
DAVIS #2 (south tower)……18 ESE AT 7:10 P.M
RMY…………………….18
MERLIN………………….18
FASTEST MILE FOR YESTERDAY…………………14 ESE AT 6:11 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 ESE AT 6:11 P.M
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE…………..15 ESE AT 6:11 P.M
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE…………..14 ESE AT 6:12 P.M
AVERAGE WIND SPEED AND DIRECTION…………. 6.3 ENE [150 total miles]
ASOS…………………. 6.7
DAVIS #1……………… 6.9 ESE [112 deg.]
DAVIS #2……………… 6.8 ESE [105 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE….-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….4.20 DEPARTURE….+0.76
ASOS…………..4.18
TOTAL PRECIPITATION FOR THE YEAR……….38.62 DEPARTURE….-3.90
ASOS………….39.39
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/…/.. 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 The low since midnight is 53, the daily normal low is 40F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 24
HIGH 79F IN 1963
LOW 22F IN 1969
PRECIP 2.96 INCHES IN 1890
SNOWFALL 1.8 INCHES IN 1960
PEAK GUST 70 MPH SE IN 1959
RECORDS FOR OCTOBER 25
HIGH 81F IN 1963
LOW 26F IN 1922,1939
PRECIP 2.45 INCHES IN 2005
SNOWFALL 1.2 INCHES IN 1960
PEAK GUST 72 MPH ESE IN 1980
TODAY’S REPORT PREPARED BY: Matt Douglas
