Sunday, November 4, 2018

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 4, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME

DRY SUNNY DAY ON TOP OF GREAT BLUE HILL….

After a stormy day yesterday, today’s weather
contrasted a great deal. Low humidity and fair
skies made for good visibility today on top of
Great Blue Hill. Sunny conditions persisted as
clouds have not obscured more than half of the
sky throughout the day. Our maximum temperature
so far today was 52F, 2 degrees below our normal
daily maximum of 54F.

PRELIMINARY STATS FOR OCTOBER 2018

TEMPERATURE, Deg. F
Avg. Max. 58.0 [-2.3] Avg. Min. 42.7 [-0.2] Mean 50.4 [-1.2] 24-hour corrected mean: 50.2
Max. for month: 82F on the 10th
Min. for month: 27F on the 22nd

HEATING DEGREE DAYS
Total heating units: 457 [+36] Total for the season: 544 [-19] Total for last season: 268

COOLING DEGREE DAYS
Total cooling units: 11 [+6] Total for the season: 874 [+272] Total for last season: 731

PRECIPITATION, Inches
Total: 5.85 in. [+1.16] Greatest in 24 hrs: 2.08 inches on October 27

WIND, mph
Avg. uncorrected wind speed: N/A
Avg. corrected wind speed: N/A
Prevailing wind direction: N/A
Peak gust and direction: N/A

Today’s Observations:

7 A.M.
Weather: Clear, few cirrus in all directions
Temperature: 39F; Dew Point: 29F; Wind: WNW at 12G13 kts
Sea-level pressure: 30.42 ins. Hg, rising rapidly
Visibility: 80 miles
6-hr Max temp: 41F
6-hr Min temp: 37F
24-hr Precip: 0.30 ins.
BHO SA 1155 CLR 70 302/39/29/3011G17/042/ FEW CI ALQDS
8/001 70030 52034 10041 20037

10 A.M.
Weather: Scattered cirrus
Temperature: 47F; Dew Point: 29F; Wind: WNW at 9G13 kts
Sea-level pressure: 30.48 ins. Hg, increasing unsteadily
Visibility: 80
3-hr Precip: 0.00 ins.
BHO SA 1455 250 SCT 80 322/47/29/3009G13/048/ 8/001 51022

1 P.M.
Weather: Scattered cirrus
Temperature: 57F; Dew Point: 56F; Wind: NW at 9G14 kts,
Sea-level pressure: 30.48 ins. Hg, falling then rising
Visibility: 80 miles
6-hr Max temp: 52F
6-hr Min temp: 39F
6-hr Precip: 0.00 ins.
BHO SA 1755 250 SCT 80 322/52/30/3209G14/048/ 8/001 55000
10052 20039

SUMMARY FOR SATURDAY, NOVEMBER 3, 2018

TEMPERATURE (DEGREES F)
MAX…..64   NORMAL…..55
MIN…..42   NORMAL…..38
MEAN….53   NORMAL…..46

DEPARTURE FROM 30-YEAR NORMAL………………….+7
TOTAL DEPARTURE FOR THE MONTH………………….+31 [+10.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..12   DEPARTURE………-7
TOTAL HEATING UNITS FOR THE MONTH…………..33   DEPARTURE……..-24
TOTAL HEATING UNITS FOR THE SEASON…………577   DEPARTURE……..-43
TOTAL HEATING UNITS LAST SEASON TO DATE…….296   DIFFERENCE……+281

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…………874  DEPARTURE……..+272
TOTAL COOLING UNITS LAST SEASON TO DATE…….731  DIFFERENCE…….+143

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..59 W AT 3:03 P.M.
AERO…………………….60 W AT 3:03 P.M.
ASOS…………………….59 W AT 3:03 P.M.
DAVIS……………………59 N AT 1:52 P.M. RMY 58
FASTEST MILE FOR YESTERDAY………………….50 W AT 2:24 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….43 W AT 2:16 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………47 W AT 2:15 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..21.1 W
ASOS…………………..20.2
DAVIS………………….20.7 W [260 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.30  DEPARTURE…….+0.15
ASOS…………..0.30
TOTAL PRECIPITATION FOR THE MONTH……….1.81  DEPARTURE…….+1.35
ASOS…………..1.87
TOTAL PRECIPITATION FOR THE YEAR……….54.85  DEPARTURE……+10.80
ASOS………….56.73

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 65/53/59/+2/0.22/042/06         21 ENE AERO 18 SSW RMY N/A
10/02 64/53/59/+2/0.77/000/00         33 S   AERO 32 S   RMY 35 TSTM
10/03 60/52/56/0/0.33/000/00          18 NNE AERO 14 NNE RMY 14
10/04 69/57/63/+7/0.00/204/30         29 SSW AERO 29 SSW RMY 32
10/05 64/47/56/0/0.00/618/92          25 NE  AERO 21 NE  RMY 24
10/06 64/45/55/0/0.00/264/40          23 SSW AERO 23 SSW RMY 25
10/07 75/56/66/+11/0.05/072/11        28 NE  AERO 24 ENE RMY 27
10/08 56/53/55/+1/0.03/000/00         22 ENE AERO 20 ENE RMY N/A
10/09 75/56/66/+12/0.00/204/31        26 WSW AERO 28 SW  RMY 29
10/10 82/65/74/+20/0.00/480/73        24 WSW AERO 23 WSW RMY 25
10/11 70/56/63/+10/0.78/000/00        48 NNE AERO 47 NNE RMY 50
10/12 59/44/52/-1/0.31/174/27         32 NW  AERO 32 NW  RMY 33
10/13 49/40/45/-8/0.17/108/17         21 WNW AERO 20 WNW RMY 20
10/14 55/37/46/-6/0.00/120/19         21 W   AERO 18 W   RMY 21
10/15 66/44/55/+3/0.06/030/05         46 W   AERO 46 W   RMY N/A
10/16 56/41/49/-2/0.03/606/94         48 W   AERO 48 W   RMY N/A
10/17 60/39/50/-1/0.01/564/89         48 W   AERO 50 W   RMY 53
10/18 45/33/39/-12/…./…/..        32 WNW AERO 35 WNW RMY 36
10/19 60/31/46/-4/…./…/..         33 SSW AERO 36 SSW RMY 36
10/20 62/46/54/+4/…./…/..         35 SSW AERO 37 SSW RMY 33
10/21 46/31/39/-11/…./…/..        39 NNW AERO 41 NW  RMY 41
10/22 50/27/39/-10/…./…/..        24 W   AERO 22 W   RMY 21
10/23 53/40/47/-2/…./…/..         29 WNW AERO 29 WNW RMY 29  TSTM
10/24 45/35/40/-9/…./…/..         31 NW  AERO 31 NW  RMY 32
10/25 48/32/40/-9/…./…/..         35 NW  AERO 35 NW  RMY 36
10/26 45/27/36/-12/…./…/..        20 NW  AERO 19 NW  RMY N/A
10/27 48/38/43/-5/…./…/..         54 NE  AERO 55 NE  RMY 55
10/28 51/40/46/-2/…./…/..         23 NNE AERO 23 NNE RMY N/A TSTM
10/29 55/40/48/+1/…./…/..         30 WSW AERO 30 WSW RMY 34
10/30 45/34/40/-7/…./…/..         28 NW  AERO 28 NW  RMY 30
10/31 55/32/44/-3/…./…/..         35 SSW AERO 36 SSW RMY 37

DAILY RECORDS FOR OCTOBER

10/10/18: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 65F,
BREAKS PREVIOUS RECORD OF 62F SET IN 1949

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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

11/01 65/49/57/+11/…./…/..         25 SSW AERO 24 SSW RMY N/A
11/02 65/52/59/+13/…./…/..         37 SSW AERO 41 SSW RMY N/A
11/03 64/42/53/+7/…./…/..          59 W   AERO 60 W   RMY 58

11/04 Low temp since midnight is 37F; normal low is 37F

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

RECORDS FOR NOVEMBER 4
HIGH 77 IN 1987
LOW 22 IN 1891
PRECIP 3.27 INCHES IN 1910
SNOWFALL 6.4 IN 1945
PEAK GUST 73 WNW IN 1965

RECORDS FOR NOVEMBER 5
HIGH 76 IN 1994
LOW 18 IN 1908
PRECIP 4.26 INCHES IN 1955
SNOWFALL 1.5 IN 1892
PEAK GUST 69 W IN 2004

TODAY’S REPORT PREPARED BY: Samantha Richard