Monday, October 31, 2022

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

MONDAY, OCTOBER 31, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0616E
SUNSET:  1639E

MORE CLOUDS THAN SUN TODAY, BUT CONTINUED ON THE WARM SIDE….

Areas of dense fog this morning gave way to partial
sunshine, which has been the theme through most of the
day. Despite the cloudiness, there has been enough sun
to allow temperatures to reach the upper 60s once again
today. Highs are more than 10 degrees above normal for
this time of year. Certainly pleasant for trick or treat
activities this evening.

The wind has been increasing as the day progresses mainly
out of a south-southwest or southwest direction. The
average speed for the day so far is around 11mph. Gusts
are reaching over 25mph this afternoon.

Visibility has been limited today, first in fog early this
morning, otherwise by haziness the remainder of the day.
Maximum value has only been around 40 miles.

The high so far today is 67F, which is 11 degrees above
the normal maximum of 56F. The low since midnight is 46F,
which is 7 degrees above the normal low of 39F.

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Today’s Observations:

7 A.M.
Weather: Overcast stratus, stratus fractus drifting over the summit
Temperature: 48F; Dew Point: 48F; Relative Humidity: 99%
Wind: SW @ 7 kts
Sea-level pressure: 1019.4 mb; 30.10 in. Hg: rising, then more slowly
Visibility: 4 miles, fog, 20 miles WNW-NW and E
6-hr Max temp: 48F
6-hr Min temp: 46F
24-hr Precip: 0.00 ins.
BHO SA 1155 E15 OVC 4F 194/48/48/2207/010/ STFRA DRFTG OVR SMT
VSBY 20 WNW-NW AND E/ 8/7// 51004 10048 20046

10 A.M.
Weather: Broken stratocumulus, thin broken cirrus, few stratus
fractus and cumulus fractus all quadrants
Temperature: 57F; Dew Point: 53F; Relative Humidity: 86%
Wind: WSW @ 8 kts
Sea-level pressure: 1018.8 mb; 30.09 in Hg: steady, then falling
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 E24 BKN 250 -BKN 40 188/57/53/2408/009/
FEW STFRA/CUFRA ALQDS/ 8/501 58006

1 P.M.
Weather: Scattered stratocumulus, broken altocumulus castellanus,
thin broken cirrus
Temperature: 67F, Dew point: 54F; Relative Humidity: 69%
Wind: SW @ 11G20 kts
Sea-level pressure: 1016.6 mb; 30.02 in Hg: falling, then more rapidly
Visibility: 40 miles
6-hr Max temp: 67F
6-hr Min temp: 48F
6-hr Precip: 0.00 ins.
BHO SA 1755 25 SCT E140 BKN 250 BKN 40 166/64/54/2311G20/002/
8/581 58022 10067 20048

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SUMMARY FOR SUNDAY, OCTOBER 30, 2022

TEMPERATURE (DEGREES F)
MAX…….67   NORMAL…..56
MIN…….42   NORMAL…..39
MEAN……55   NORMAL…..48

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+7
TOTAL DEPARTURE FOR THE MONTH………………..+62 [+1.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY……………10  DEPARTURE……..-8
TOTAL HEATING UNITS FOR THE MONTH…………..306  DEPARTURE…….-70
TOTAL HEATING UNITS FOR THE SEASON………….405  DEPARTURE…….-89
TOTAL HEATING UNITS LAST SEASON TO DATE……..320  DEPARTURE…….+85

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….0  DEPARTURE……..-7
TOTAL COOLING UNITS FOR THE SEASON………….884  DEPARTURE……+207
TOTAL COOLING UNITS LAST SEASON TO DATE……..717  DEPARTURE……+167

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….18 SSW @ 11:21 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..19     @ 11:21 P.M.
DAVIS #2 ………………22 S   @  6:03 P.M.
RMY #2 (Instantaneous)…..19 SSW @ 11:21 P.M.
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 SSW @ 11:52 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15     @ 11:41 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 S   @  5:54 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 SW  @ 11:43 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE……OUT OF SERVICE D/T RENOVATIONS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..7.2 SSW [173 total miles] VECTOR #2………………8.0
DAVIS #2……………….7.8 SW
RMY #2…………………8.1 SSW
RMY #1……….OUT OF SERVICE D/T RENOVATIONS
VECTOR #1…….OUT OF SERVICE D/T RENOVATIONS
DAVIS #1……..OUT OF SERVICE D/T RENOVATIONS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH…………..5.69 DEPARTURE…..+0.38
TOTAL PRECIPITATION FOR THE YEAR…………..33.68 DEPARTURE….-10.30

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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

10/1  56/48/52/-6/0.02/000/00           26 NE   AERO N/A    RMY 27
10/2  55/48/52/-6/0.00/077/11           53 ENE  AERO N/A    RMY 55
10/3  54/48/51/-6/0.00/014/02           41 ENE  AERO N/A    RMY 41
10/4  56/49/53/-4/0.62/000/00           39 ENE  AERO N/A    RMY 38
10/5  56/52/54/-3/1.09/000/00           32 NNE  AERO N/A    RMY 32
10/6  72/56/64/+8/0.05/566/82           23 N    AERO N/A    RMY 23
10/7  77/52/65/+9/0.00/632/92           31 NW   AERO N/A    RMY 31
10/8  59/40/50/-5/0.02/596/87           23 NW   AERO N/A    RMY 23
10/9  61/36/49/-6/0.00/648/95           30 W    AERO N/A    RMY 30
10/10 65/45/55/0/0.00/231/34            24 SW   AERO N/A    RMY 24
10/11 65/45/55/1/0.00/623/92            22 WSW  AERO N/A    RMY 22
10/12 74/51/63/+9/0.00/612/91           29 SW   AERO N/A    RMY 29
10/13 66/54/60/+6/1.20/074/11           39 SSE  AERO N/A    RMY 39
10/14 66/54/60/+7/0.97/107/16           41 SE   AERO N/A    RMY 42
10/15 69/47/58/+5/0.00/632/95           18 SSW  AERO N/A    RMY 19
10/16 69/50/60/+8/0.00/564/85           17 W    AERO N/A    RMY 18
10/17 59/50/55/+3/0.38/007/01           29 SSE  AERO N/A    RMY 30
10/18 66/42/54/+2/0.21/256/39           34 SSW  AERO N/A    RMY 36
10/19 56/38/47/-4/0.00/621/95           32 WSW  AERO N/A    RMY 34
10/20 58/39/49/-2/0.00/638/98           35 SW   AERO N/A    RMY 35
10/21 64/43/54/+3/0.00/630/97           23 SSW  AERO N/A    RMY 24
10/22 68/47/58/+8/0.00/606/94           20 SSW  AERO N/A    RMY 20
10/23 57/49/53/+3/0.07/000/00           28 NE   AERO N/A    RMY 29
10/24 58/49/54/+4/0.51/000/00           23 NNE  AERO N/A    RMY 24 TSTM
10/25 64/56/60/+11/0.12/000/00          19 ESE  AERO N/A    RMY 19
10/26 64/58/61/+12/0.42/…/..          24 SW   AERO N/A    RMY 23
10/27 66/42/54/+5/0.01/…/..           34 NNW  AERO N/A    RMY 34
10/28 50/36/43/-5/0.00/…/..           25 NE   AERO N/A    RMY 26
10/29 56/36/46/-2/0.00/…/..           16 NNE  AERO N/A    RMY 16
10/30 67/42/55/+7/0.00/…/..           18 SSW  AERO N/A    RMY 19

10/31 The low since midnight is 46F, the daily normal low is 39F

DAILY RECORDS

10/02/2022: NEW PEAK WIND GUST RECORD OF 53 MPH ENE,
PREVIOUS RECORD WAS 52e MPH S IN 1952 AND
52 MPH NNW IN 1984.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR OCTOBER 31
HIGH 79F IN 1946
LOW 22F IN 1904
PRECIP 3.74 INCHES IN 1991
SNOWFALL TRACE IN 1906
PEAK GUST 70e S IN 1945

RECORDS FOR NOVEMBER 1
HIGH 75 IN 2003
LOW 22 IN 1913,1923
PRECIP 2.37 INCHES IN 1988
SNOWFALL TRACE IN 1906,1951
PEAK GUST 78 ESE IN 1997

TODAY’S REPORT PREPARED BY: Matt Douglas