Friday, October 2, 2020
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, OCTOBER 2, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
COOL AND OVERCAST HERE ATOP GREAT BLUE HILL…
A fairly nondescript day here on the hill. Mostly cloudy
skies quickly became the theme this morning- eventually
turning to overcast by early afternoon with virga approaching
from the west. No precipitation here thus far. Winds
have been generally tame out of the west only topping
out so far at 20 MPH. Temperatures slowly rose to
the low-60s mid-morning before slipping to the upper-50s
thereafter. Dew points began in the mid-50s, but have now
settled into the upper-40s.
The drought monitor was updated yesterday revealing yet
another escalation. 55% of MA now in a “severe drought”
and 29% considered in an “extreme drought” (approximately
Boston to Providence and points south and east).
The high so far today is 63F, 2 degrees below the daily
normal max of 65F. The low since midnight is 56F, which
is 8 degrees above the normal low of 48F.
Today’s Observations:
7 A.M.
Weather: Broken Altocumulus, Altostratus & Altocumulus Undulatus
(few stratus fractus distant SE-S; higher clouds visible distant NE-SE)
Temperature: 57F; Dew Point: 54F; Relative Humidity: 90%
Wind: WSW at 4 kts (wind light)
Sea-level pressure: 29.95 ins. Hg: steady, then rising
Visibility: 25 miles (thin fog)
6-hr Max temp: 57F
6-hr Min temp: 56F
24-hr Precip: 0.00 ins.
BHO SA 1155 E110 BKN 25 141/57/54/2404/995/ FEW STFRA DSNT SE-S
HIR CLDS VSB DSNT NE-SE THN F ALQDS WND LGT/ 8/770 53006 10057
20056
10 A.M.
Weather: Broken Altocumulus & Altostratus (few cumulus
distant E-SSE; higher clouds visible distant NE-SE)
Temperature: 62F; Dew Point: 50F; Relative Humidity: 64%
Wind: W at 4 kts (wind light & variable)
Sea-level pressure: 29.95 ins. Hg: falling, then rising
Visibility: 35 miles (hazy)
3-hr Precip: 0.00 ins.
BHO SA 1455 E110 BKN 35 141/62/50/2704/995/ FEW CU DSNT E-SSE
HIR CLDS VSB DSNT NE-SE HAZY WND L/V/ 8/170 55000
1 P.M.
Weather: Overcast Altocumulus/Altostratus (virga distant SW-NW)
Temperature: 59F; Dew Point: 49F; Relative Humidity: 70%
Wind: WNW at 10G17 kts
Sea-level pressure: 29.93 ins. Hg: rising, then falling
Visibility: 50 miles (hazy)
6-hr Max temp: 64F
6-hr Min temp: 57F
6-hr Precip: 0.00 ins.
BHO SA 1755 E060 OVC 50 137/59/49/3010G17/993/ VIRGA DSNT SW-NW
HAZY/ 8/07/ 58004 10064 20057
SUMMARY FOR THURSDAY, OCTOBER 1, 2020
TEMPERATURE (DEGREES F)
MAX…..75 NORMAL…..66
MIN…..56 NORMAL…..49
MEAN….66 NORMAL…..57
DEPARTURE FROM 30-YEAR NORMAL……………..+9
TOTAL DEPARTURE FOR THE MONTH……………..+9 [+8.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………. 0 DEPARTURE….. -8
TOTAL HEATING UNITS FOR THE MONTH…………..0 DEPARTURE….. -8
TOTAL HEATING UNITS FOR THE SEASON…………98 DEPARTURE…..-53
TOTAL HEATING UNITS LAST SEASON TO DATE…….98 DEPARTURE…….0
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………. 1 DEPARTURE…… 0
TOTAL COOLING UNITS FOR THE MONTH…………. 1 DEPARTURE….. +1
TOTAL COOLING UNITS FOR THE SEASON………..831 DEPARTURE….+234
TOTAL COOLING UNITS LAST SEASON TO DATE……680 DEPARTURE….+151
PEAK WIND GUST FOR YESTERDAY (MPH)
420C/Official…………….28 SW AT 1:25 A.M.
AERO…………………….28 SW AT 1:24 A.M.
ASOS…………………….29 SSW AT 1:26 A.M.
DAVIS……………………28 SW AT 1:25 A.M.
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….22 SW AT 1:25 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….21 SSW AT 1:27 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………20 SSW AT 1:37 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..13.0 SSW (312 total miles)
ASOS…………………..12.5
DAVIS………………….12.3 SSW [213 deg.]
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……….0.00 DEPARTURE….-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE YEAR……….34.43 DEPARTURE….-4.81
ASOS………….35.21
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
09/01 76/59/68/0/0.00/698/88 22 SSE AERO 21 SE RMY 20
09/02 69/59/64/-4/0.18/102/13 23 SSE AERO 23 SSE RMY 24
09/03 75/66/71/+4/0.04/000/00 22 SSW AERO 21 SSW RMY N/A
09/04 82/62/72/+5/0.00/763/98 26 WNW AERO 26 WNW RMY 25
09/05 76/55/66/-1/0.00/760/98 25 W AERO 25 W RMY 24
09/06 78/58/68/+1/0.00/356/46 24 W AERO 24 W RMY N/A
09/07 79/61/70/+4/0.00/632/82 27 SSE AERO 30 SSE RMY 28
09/08 82/61/72/+6/0.00/545/71 17 S AERO 16 S RMY 17
09/09 80/62/71/+5/0.00/214/28 16 S AERO 15 S RMY 16
09/10 81/69/75/+10/0.28/015/02 21 SSW AERO 21 SSW RMY N/A
09/11 72/55/64/-1/0.01/152/20 25 N AERO 25 N RMY N/A
09/12 68/51/60/-5/0.00/666/88 21 ENE AERO 21 ENE RMY 21
09/13 74/53/64/0/0.00/611/81 26 SSW AERO 26 SSW RMY 26
09/14 74/50/62/-2/0.00/511/68 29 NNW AERO 33 NNW RMY 30
09/15 64/44/54/-10/0.00/583/78 18 S AERO 18 S RMY N/A
09/16 72/49/61/-2/0.00/603/81 31 SSW AERO 31 SSW RMY 31
09/17 76/57/67/+4/0.00/453/61 26 WSW AERO 28 W RMY N/A
09/18 64/48/56/-6/0.00/163/22 28 NE AERO 30 NNW RMY N/A
09/19 59/42/51/-11/0.00/722/98 23 N AERO 23 N RMY N/A
09/20 58/40/49/-13/0.00/602/82 25 NE AERO 25 NE RMY 27
09/21 61/41/51/-10/0.00/…/.. 29 NE AERO 27 NE RMY 29
09/22 63/39/51/-10/0.00/…/.. 28 NNW AERO 30 NNW RMY 29
09/23 78/50/64/+4/0.00/…/.. 31 NW AERO 32 WNW RMY 32
09/24 76/57/67/+7/0.00/…/.. 20 SW AERO 18 WSW RMY 19
09/25 77/57/67/+7/0.00/…/.. 18 ENE AERO 18 WSW RMY N/A
09/26 77/57/67/+8/0.00/…/.. 21 S AERO 21 S RMY 21
09/27 79/64/72/+13/0.01/…/.. 24 S AERO 25 S RMY 24
09/28 78/64/71/+13/0.07/…/.. 24 SSE AERO 24 S RMY 25
09/29 76/62/69/+11/0.01/…/.. 30 S AERO 30 S RMY N/A
09/30 72/56/64/+6/1.01/…/.. 71 S AERO 88 S RMY N/A
10/01 75/56/66/+9/0.00/…/.. 28 SW AERO 28 SW RMY N/A
10/02 The low since midnight is 56F, the daily normal low is 48F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 2
HIGH 85F IN 1968
LOW 29F IN 1899
PRECIP 1.75 INCHES IN 1984
PEAK GUST 52e MPH S IN 1952, 52 NNW IN 1984
RECORDS FOR OCTOBER 3
HIGH 82F IN 1922
LOW 28F IN 1899
PRECIP 1.76 INCHES IN 1979
PEAK GUST 62 MPH WNW IN 1964
TODAY’S REPORT PREPARED BY: Andrew Swanson
