Sunday, October 28, 2018

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, OCTOBER 28, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME

NOR’EASTER ENDS, WINDS CALM AND CLOUDS BEGIN TO LEAVE THE AREA…
STORM TOTAL RAINFALL: 2.15 INCHES…

Yesterday’s nor’easter brought a total of 2.15 inches of rain
between yesterday and this morning. Our peak gust yesterday
was 54 miles per hour from the northeast. We experienced dense
fog this morning that decreased our visibility to 1/16th of a
mile. Through the morning and into the early afternoon,
visibility has begun to increase, as clouds and fog leave
the area. Our high temperature so far today is 50F, 6 degrees
below our normal maximum temperature of 56F.
Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 40F; Dew Point: 40F; Wind: W at 5 kts,
Wind: Light
Sea-level pressure: 29.72 ins. Hg, increasing, then more
quickly
Visibility: 1/16 mile
6-hr Max temp: 44F
6-hr Min temp: 40F
24-hr Precip: 2.02 ins.
BHO SA 1155 W3 X 1/16 066/40/40/2605/972/ FOG WND LGT/ 8/6//
53033 70202 10044 20040

10 A.M.
Weather: Overcast stratus, distant fog S-E
Temperature: 44F; Dew Point: 44F; Wind: WSW at 8G14 kts
Sea-level pressure: 29.74 ins. Hg, steady then falling
Visibility: 10 miles, 40 miles E-S
3-hr Precip: 0.02 ins.
BHO SA 1455 E7 OVC 10 071/44/44/2508G14/974/ VSBY E-S 40 DSNT
FOG S-E/ 8/6// 6002/ 50005

1 P.M.
Weather: Broken stratocumulus
Temperature: 50F; Dew Point: 45F; Wind: SW at 8G14 kts,
Sea-level pressure: 29.72 ins. Hg, steady then falling
Visibility: 80 miles
6-hr Max temp: 50F
6-hr Min temp: 40F
6-hr Precip: 0.02 ins.
BHO SA 1755 E20 BKN 80 065/50/45/2308G14/972/ 8/400 6002/ 58006
10050 20040
SUMMARY FOR SATURDAY, OCTOBER 27, 2018

TEMPERATURE (DEGREES F)
MAX…..48   NORMAL…..57
MIN…..38   NORMAL…..39
MEAN….43   NORMAL…..48

DEPARTURE FROM 30-YEAR NORMAL…………………..-5
TOTAL DEPARTURE FOR THE MONTH………………….-20 [-0.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..22   DEPARTURE………+5
TOTAL HEATING UNITS FOR THE MONTH………….375   DEPARTURE……..+25
TOTAL HEATING UNITS FOR THE SEASON…………462   DEPARTURE……..-30
TOTAL HEATING UNITS LAST SEASON TO DATE…….230   DIFFERENCE……+232

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0  DEPARTURE………..0
TOTAL COOLING UNITS FOR THE MONTH…………..11  DEPARTURE……….+6
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………………..54 NE  AT  5:24  P.M.
AERO…………………….55 NE  AT  4:40  P.M.
ASOS…………………….59 ENE AT  4:43  P.M.
DAVIS……………………56 E   AT  1:40  P.M. RMY 55
FASTEST MILE FOR YESTERDAY………………….39 ENE AT  1:42  P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….37 ENE AT  12:44 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………38 E   AT  1:40  P.M.
AVERAGE WIND SPEED AND DIRECTION…………..22.2 ENE
ASOS…………………..22.0
DAVIS………………….22.2 ENE [78 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….2.02  DEPARTURE……+1.86
ASOS…………..2.11
TOTAL PRECIPITATION FOR THE MONTH……….5.48  DEPARTURE……+1.42
ASOS…………..5.53
TOTAL PRECIPITATION FOR THE YEAR……….52.68  DEPARTURE……+9.72
ASOS………….54.45

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 Low temp since midnight is 40F; normal low is 39F

DAILY RECORDS FOR OCTOBER

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

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

RECORDS FOR OCTOBER 28
HIGH 81F IN 1919
LOW 23F IN 1914
PRECIP 2.46 INCHES IN 2006
SNOWFALL TRACE IN 1934,1957,1979
PEAK GUST 71 MPH SSW IN 1995

RECORDS FOR OCTOBER 29
HIGH 74F IN 1989
LOW 23F IN 1891
PRECIP 2.42 INCHES IN 2012
SNOWFALL 4.0 INCHES IN 2011
PEAK GUST 76 E IN 2012

TODAY’S REPORT PREPARED BY: Samantha Richard