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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, OCTOBER 27, 2018 
ALL TIMES ARE IN EASTERN STANDARD TIME

NOR'EASTER BRINGS STEADY RAIN AND STRONG WINDS TO BLUE HILL...
STORM TOTAL RAINFALL 0.95 INCHES THROUGH 1 PM EST...

An intensifying nor'easter is moving up the East Coast today
bringing rain and strong winds to Southern New England. Light
rain began before sunrise at the Observatory and a total of
0.11 inches was measured at 7 AM EST. Light rain became 
occasionally moderate during the morning, and an additional
0.84 inches was measured for the six hours ending at 1 PM EST. 
The wind has been increased from the east all day with a 
peak gust so far of 45 kts, 52 mph from the east at 1:39 PM. 
The highest hourly average wind speed has been 31 mph during
the 1-2 PM EST hour. The visibility has dropped from about
8 miles early this morning to about 1/2-3/4 of a mile at 
early afternoon as the fog has lowered and the rain intensity 
has increased. 
  

Today's Observations:

7 A.M.
Weather: Light rain, scattered stratus fractus, broken 
stratocumulus, overcast nimbostratus
Temperature: 42F; Dew Point: 42F; Wind: E at 18G26 kts,
Wind: Peak gust 26 kts, E at 6:47 AM EST 
Sea-level pressure: 30.06 ins. Hg, increasing then decreasing
now lower      
Visibility: 8 miles
6-hr Max temp: 42F
6-hr Min temp: 38F
24-hr Precip: 0.11 ins.   
BHO SA 1155 3 SCT E20 BKN 65 OVC 8R- 178/42/42/0818G26/006/ 
PK WND 0826/47/ 8/52/ 58027 6011/ 70011 10042 20038

10 A.M.
Weather: Light rain and fog, broken stratus, overcast 
nimbostratus
Temperature: 44F; Dew Point: 44F; Wind: E at 26G33 kts 
Wind: Peak gust 33 kts, E at 9:52 AM
Sea-level pressure: 29.96 ins. Hg, falling then more quickly 
Visibility: 5 miles
3-hr Precip: 0.23 ins.
BHO SA 1455 E7 BKN 20 OVC 5R-F 146/44/44/0826G33/996/ 
PK WND 0833/52/ 8/62/ 58032 6023/

1 P.M.
Weather: Moderate rain and fog, overcast nimbostratus
Temperature: 48F; Dew Point: 47F; Wind: ENE at 25G43 kts,
Wind: Peak gust 43 kts, ENE at 12:23 PM
Sea-level pressure: 29.82 ins. Hg, falling then more quickly    
Visibility: 3/4 miles, variable 1/2 to 1 mile
6-hr Max temp: 48F
6-hr Min temp: 42F 
6-hr Precip: 0.84 ins.
BHO SA 1755 –X E5 OVC 3/4VRF 099/48/47/0725G43/982/ F1 
VSBY 1/2V1 PK WND 0743/23/ 8/62/ 58047 6084/ 10048 20042
 

SUMMARY FOR FRIDAY, OCTOBER 26, 2018 

TEMPERATURE (DEGREES F)
MAX.....45   NORMAL.....57
MIN.....27   NORMAL.....39
MEAN....36   NORMAL.....48

DEPARTURE FROM 30-YEAR NORMAL......................-12
TOTAL DEPARTURE FOR THE MONTH......................-15 [-0.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............29   DEPARTURE........+12
TOTAL HEATING UNITS FOR THE MONTH.............353   DEPARTURE........+20
TOTAL HEATING UNITS FOR THE SEASON............440   DEPARTURE........-35
TOTAL HEATING UNITS LAST SEASON TO DATE.......216   DIFFERENCE......+224

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....................20 NW  AT  8:33 A.M. *
                   AERO.........................19 NW  AT  2:03 A.M. *
                   ASOS.........................20 NW  AT  1:48 A.M. 
                   DAVIS........................20 NW  AT  1:55 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY......................13 NW  AT  1:53 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................13 WNW AT  8:43 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................14 NW  AT  2:04 A.M.
AVERAGE WIND SPEED AND DIRECTION...............8.1 WNW
                   ASOS........................7.4   
                   DAVIS.......................7.6 WNW [287 deg.] 
* Last of several occurrences...
**Davis malfunctioning  

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.11  DEPARTURE......-0.05
                         ASOS..............0.11
TOTAL PRECIPITATION FOR THE MONTH..........3.46  DEPARTURE......-0.45
                         ASOS..............3.42 
TOTAL PRECIPITATION FOR THE YEAR..........50.66  DEPARTURE......+7.85
                         ASOS.............52.34 


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 Low temp since midnight is 38F; 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 27
HIGH 83F IN 1963
LOW 21F IN 1936
PRE 1.79 INCHES IN 1886
SNOW 2.5 INCHES IN 2011
WIND 54 MPH WNW IN 1968

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

TODAY'S REPORT PREPARED BY: Mike Iacono / Samantha Richard