Thursday, November 2, 2017

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 2, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

SOUTHEASTERN WINDS BRING WARMER WETTER AIR…
OCTOBER 2017 WAS WARMEST ON RECORD

Winds have been light to moderate from
the southeast since yesterday’s midday
wind shift. Winds starting to pick up
overnight with gust over 20 kts (23 MPH.)
This morning’s winds have been moderate with
gust up to 22 kts (25 MPH.)
Skies are overcast altostratus this morning
with a distant fog which limited visibility
to 40 miles ENE-ESE and 20 miles ESE-ENE.
Yesterday temperatures were normal for
November 1st with no departure from normal.
So far today temperatures are back to being
slightly above seasonable with an overnight
low of 49F and a high of 58F just before 10
A.M. EST.

PRELIMINARY STATS FOR OCTOBER 2017

TEMPERATURE, Deg. F
Avg. Max. 68.0 [+7.7] Avg. Min. 51.7 [+8.8] Mean      59.9 [+8.3] 24-hour corrected mean: 59.2
Max. for month: 79F on 5th
Min. for month: 35F on 17th

HEATING DEGREE DAYS
Total heating units: 175 [-246] Total for the season: 268 [-295] Total for last season: 421

COOLING DEGREE DAYS
Total cooling units: 24 [+19] Total for the season: 731 [+129] Total for last season: 901

PRECIPITATION, Inches
Total: 5.94 [+1.25] Greatest in 24 hrs: 3.12 on the 29th-30th

WIND, mph
Avg. uncorrected wind speed: 12.4
Avg. corrected wind speed: 12.8
Prevailing wind direction: S at 13%
Peak gust and direction: 73 SE on 30th

SUNSHINE:
Campbell-Stokes card minutes: N/A
Astronomical total minutes: N/A

BHO Warmest Octobers, deg F (1885-2017):

1) 59.2 in 2017
2) 58.4 in 1947
3) 56.9 in 2007
4) 56.6 in 1971
5) 56.5 in 1963
6) 55.7 in 1946
7) 55.5 in 1995
8) 55.3 in 1990

Today’s Observations:

7 A.M.
Weather: Overcast altostratus
Temperature: 53F; Dew Point: 51F; Wind: SSE at 11 kts,
Sea-level pressure: 30.33 ins. Hg, rising unsteadily
Visibility: 20 miles ESE-ENE, 40 Miles ENE-ESE distant
fog in all directions
6-hr Max temp: 53F
6-hr Min temp: 49F
24-hr precip: 0.00
BHO SA 1155 E10 OVC 20 270/53/51/1511/033/ VSBY ENE-ESE 40 DSNT
FG ALQDS/ 8/010 52002 10053 20049

SUMMARY FOR WEDNESDAY, NOVEMEBER 1, 2017

TEMPERATURE (DEGREES F)
MAX…..53   NORMAL…..55
MIN…..39   NORMAL…..38
MEAN….46   NORMAL…..46

DEPARTURE FROM 30-YEAR NORMAL……………………..0
TOTAL DEPARTURE FOR THE MONTH……………………..0 [ 0.0 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0   DEPARTURE………..0
TOTAL COOLING UNITS FOR THE MONTH……………0   DEPARTURE………..0
TOTAL COOLING UNITS FOR THE SEASON…………731   DEPARTURE……..+129
TOTAL COOLING UNITS LAST SEASON TO DATE…….901   DEPARTURE……..-170

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..19   DEPARTURE………..0
TOTAL HEATING UNITS FOR THE MONTH…………..19   DEPARTURE………..0
TOTAL HEATING UNITS FOR THE SEASON…………287   DEPARTURE……..-295
TOTAL HEATING UNITS LAST SEASON TO DATE…….444   DEPARTURE……..-157

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 SE   AT  8:59 P.M.
AERO……………………24 SE   AT  9:00 P.M.
ASOS……………………22 SSE  AT  9:01 P.M.
DAVIS…………………..24 SE   AT  9:00 P.M.  RMY 25
FASTEST MILE FOR YESTERDAY………………….M ****
MAXIMUM 2-MINUTE ASOS AVERAGE………………16 SE    AT   9:31 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..17 SE    AT   9:05 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..7.9 SE
ASOS…………………..8.1
DAVIS………………….7.8 ESE  [123 DEG.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.16
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….0.00  DEPARTURE……-0.16
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE YEAR……….47.80  DEPARTURE……+4.03
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
**** Contacting Anemometer down

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  65/42/54/-3/0.00/697/99             18 WNW AERO 16 NW  RMY N/A
10/2  65/46/56/-1/0.00/687/98             21 NNW AERO 21 NNW RMY 21
10/3  67/50/59/+3/0.00/677/97             21 S   AERO 21 S   RMY N/A
10/4  75/50/63/+7/0.00/660/95             30 SSW AERO 30 SW  RMY 32
10/5  79/60/70/+14/0.00/429/62            28 SW  AERO 26 SW  RMY N/A
10/6  73/57/65/+10/T/352/51               15 NW  AERO 14 NW  RMY 15
10/7  75/59/67/+12/T/344/50               29 S   AERO 30 SSW RMY N/A
10/8  71/67/69/+15/0.23/007/01            33 S   AERO 36 SSW RMY 37
10/9  71/68/70/+16/0.22/000/00            43 S   AERO 41 S   RMY 45
10/10 76/61/69/+15/0.00/637/94            21 WNW AERO 20 WNW RMY 21
10/11 68/55/62/+9/0.00/169/25             29 ENE AERO 25 ENE RMY 29
10/12 58/48/50/0/T/545/81                 30 NE  AERO 28 ENE RMY 30
10/13 64/48/56/+3/0.00/637/95             20 E   AERO 16 E   RMY 17
10/14 66/54/60/+8/0.04/067/10             15 SSE AERO 13 SSE RMY 13
10/15 72/58/65/+13/0.01/146/22            39 SSW AERO 36 SSW RMY 40
10/16 66/39/53/+2/T/007/01                28 NNW AERO 25 NNW RMY 29
10/17 57/35/46/-5/0.00/659/100            25 S   AERO 22 S   RMY 25
10/18 70/45/58/+7/0.00/649/99             25 SW  AERO 23 SW  RMY 22
10/19 72/52/62/+12/0.00/614/94            31 SSW AERO 30 SSW RMY 32
10/20 68/53/61/+11/0.00/651/100           28 WNW AERO 25 WNW RMY 29
10/21 77/52/65/+15/0.00/648/100           21 NW  AERO 20 NW  RMY 18
10/22 73/54/64/+15/0.00/561/80            21 ENE AERO 16 ENE RMY 17
10/23 69/50/60/+11/0.00/103/16            24 SSE AERO 24 SSE RMY N/A
10/24 73/64/69/+20/…/032/05             50 SSE AERO 51 S   RMY N/A
10/25 69/57/63/+14/…/…/..             50 SSW AERO 50 SSW RMY N/A
10/26 60/44/52/+4/…/…/..              40 W   AERO 41 W   RMY 39
10/27 60/42/51/+3/0.00/…/..             28 W   AERO 25 W   RMY N/A
10/28 66/47/57/+9/0.00/…/..             24 S   AERO 23 S   RMY 26
10/29 62/55/59/+12/…/…/..             62 ESE AERO 63 ESE RMY N/A    10/30 63/48/56/+9/…/…/..              73 SE  AERO 68 SE  RMY N/A
10/31 56/43/50/+3/0.00/…/..             35 WSW AERO 33 WSW RMY 35

DAILY RECORDS FOR OCTOBER

10/8/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 67F,
BREAKS PREVIOUS RECORD OF 60F SET IN 1944

10/9/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 68F,
BREAKS PREVIOUS RECORD OF 61F SET IN 2011

10/9/17: MONTHLY RECORD HIGH MINIMUM TEMPERATURE OF 68F,
BREAKS PREVIOUS RECORD OF 67F SET ON OCTOBER 13, 1990
AND TIED ON OCTOBER 8, 2017

10/24/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 64F,
BREAKS PREVIOUS RECORD OF 61F SET IN 2001

10/30/17: DAILY MAXIMUM PEAK GUST 63 KTS (73 MPH) SE
BREAK PREVIOUS RECORD OF 57 KTS (66 MPH) NW SET IN 1963

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

11/1 53/39/46/0/0.00/…/..                25 SE AERO 24 SE RMY 25

11/2 Low temp since midnight is 49F; normal low is now 38F

 

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

RECORDS FOR NOVEMBER 2
HIGH 81 IN 1950
LOW 22 IN 1965
PRECIP 1.67 INCHES IN 1970
SNOWFALL 1.8 IN 2014
PEAK GUST 63 WSW IN 1973

RECORDS FOR NOVEMBER 3
HIGH 75 IN 1990
LOW 21 IN 1891
PRECIP 1.92 INCHES IN 1951
SNOWFALL 0.1 IN 1951
PEAK GUST 96e SSE IN 1951

TODAY’S REPORT PREPARED BY: Kaitlin Ann Geagan