Saturday, October 3, 2020

| October 4, 2020 | Reply

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

SATURDAY, OCTOBER 3, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

PARTLY CLOUDY AND COOL TODAY WITH NEARLY DEAD
WIND BETWEEN OBSERVATIONS….

Today we observed an excellent visibility of 80 miles on
average under partly cloudy skies. Conditions are dry,
with dew points in the low 40’s, and a humidity of 52%
by the 1 P.M. observation. Wind was westerly, being
calm between 10 A.M. and 11 A.M. The max gust so far
today is only 14 mph.

Some very nice fall weather is upon us, and we are open
for rooftop tours until 4 P.M. It’s currently $3 for
adults and 1$ each for children.

The drought monitor was updated on Thursday 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).

-Drought section written by Andrew Swanson

The high so far today is 65F, the same as the daily
normal. The low since midnight is 45F, which
is 3 degrees below the normal low of 48F.

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, broken cirrus
Temperature: 48F; Dew Point: 44F; Relative Humidity: 86%
Wind: WSW at 7 kts
Sea-level pressure: 30.15 ins. Hg: steady, then rising
Visibility: 75 miles
6-hr Max temp: 58F
6-hr Min temp: 45F
24-hr Precip: 0.02 ins.
BHO SA 1155 120 SCT 250 SCT 75 211/48/44/3307/015/ 8/052
70002 53015 10058 20045

10 A.M.
Weather: Scattered cumulus, broken altocumulus and cirrus
Temperature: 59F; Dew Point: 47F; Relative Humidity: 64%
Wind: W at 4 kts (wind light and variable)
Sea-level pressure: 30.19 ins. Hg: falling, then rising
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 35 SCT 120 BKN 250 BKN 80 223/59/47/2704/019/
WND L/V/ 8/152 51012

1 P.M.
Weather: Broken cumulus
Temperature: 52F; Dew Point: 45F; Relative Humidity: 52%
Wind: WSW at 7 kts
Sea-level pressure: 30.16 ins. Hg: rising, then falling
Visibility: 80 miles
6-hr Max temp: 65F
6-hr Min temp: 48F
6-hr Precip: 0.00 ins.
BHO SA 1755 40 BKN 80 214/52/45/2507/016/ 8/100 58009 10065
20048

SUMMARY FOR FRIDAY, OCTOBER 2, 2020

TEMPERATURE (DEGREES F)
MAX…..63   NORMAL…..66
MIN…..49   NORMAL…..49
MEAN….56   NORMAL…..57

DEPARTURE FROM 30-YEAR NORMAL……………..-1
TOTAL DEPARTURE FOR THE MONTH……………..+8 [+3.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………. 9  DEPARTURE…..  0
TOTAL HEATING UNITS FOR THE MONTH…………..9  DEPARTURE….. -8
TOTAL HEATING UNITS FOR THE SEASON………..107  DEPARTURE…..-52
TOTAL HEATING UNITS LAST SEASON TO DATE……101  DEPARTURE…….6

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………. 0  DEPARTURE……-1
TOTAL COOLING UNITS FOR THE MONTH…………. 1  DEPARTURE…..  0
TOTAL COOLING UNITS FOR THE SEASON………..831  DEPARTURE….+233
TOTAL COOLING UNITS LAST SEASON TO DATE……680  DEPARTURE….+151

PEAK WIND GUST FOR YESTERDAY (MPH)
420C/Official…………….20 NW  AT 11:10 A.M.
AERO…………………….21 NW  AT 10:58 A.M.
ASOS…………………….20 NW  AT 11:08 A.M.
DAVIS……………………20 WNW AT 11:11 A.M.
RMY 20  MERLIN 20
FASTEST MILE FOR YESTERDAY………………….15 NW  AT 11:11 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….15 NW  AT 11:12 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………16 NW  AT 11:12 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.3 WNW (176 total miles)
ASOS…………………..7.7
DAVIS………………….7.8 WNW [301 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.02  DEPARTURE….-0.13
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE MONTH……….0.02  DEPARTURE….-0.29
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE YEAR……….34.45  DEPARTURE….-4.94
ASOS………….35.23

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

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/…/..             28 SW   AERO 28 SW   RMY N/A
10/02  63/49/56/-1/0.02/…/..             20 NW   AERO 21 NW   RMY 20

10/03 The low since midnight is 45F, 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 3
HIGH 82F IN 1922
LOW 28F IN 1899
PRECIP 1.76 INCHES IN 1979
PEAK GUST 62 MPH WNW IN 1964

RECORDS FOR OCTOBER 4
HIGH 84F IN 2007
LOW 28F IN 1888
PRECIP 1.87 INCHES IN 2011
PEAK GUST 59 MPH SSW IN 1990

TODAY’S REPORT PREPARED BY: Benjamin Turner

Category: Daily Discussions

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