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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, OCTOBER 24, 2018 
ALL TIMES ARE IN EASTERN STANDARD TIME

OVERCAST AND COOL WITH A LIGHT DRIZZLE 
THROUGHOUT THE DAY....

We measured a total of 0.51 inches this morning 
from the rain yesterday afternoon. Wind increased
this afternoon, marked by a 30 mph gust just before
the 1 P.M observation.  Visibility has been limited 
by distant rain and fog, with a maximum visibility of 
35 miles observed at 7 A.M.  Temperatures have been 
fairly steady throughout the day, rising to 45F in the 
morning but trending back down this afternoon. Readings
have remained 13 degrees below the seasonal average of 58F.  

Today's Observations:

7 A.M.
Weather: Broken stratocumulus
Temperature: 41F; Dew Point: 39F; Wind: WNW at 10G16 kts 
Sea-level pressure: 29.88 ins. Hg, rising steadily       
Visibility: 35 miles
6-hr Max temp: 41F
6-hr Min temp: 39F
24-hr Precip: 0.51 ins.   
BHO SA 1155 E30 BKN 35 120/41/39/2910G16/988/ 8/400
53004 70051 10041 20039

10 A.M.
Weather: Overcast stratocumulus, few stratus fractus 
in all directions, virga S-E, light drizzle beginning
at 9:20 A.M.
Temperature: 44F; Dew Point: 40F; Wind: NW at 12G22 kts  
Sea-level pressure: 29.91 ins. Hg, increasing steadily 
Visibility: 20 miles, except 40 miles SE
3-hr Precip: Trace
BHO SA 1455 E28 OVC 20L- 129/44/40/3212G22/991/ FEW STFRA 
ALQDS VIRGA S-E VSBY 40 SE L-B20/ 8/8// 50009 6000/

1 P.M.
Weather: Overcast stratus, distant fog all quadrants,
light drizzle continued
Temperature: 42F; Dew Point: 40F; Wind: NW at 16G26 kts,
Peak wind: NW at 30 mph (26 kts) at 12:55 P.M.
Sea-level pressure: 29.93 ins. Hg, rising steadily     
Visibility: 20 miles
6-hr Max temp: 45F
6-hr Min temp: 40F 
6-hr Precip: 0.02 inches
BHO SA 1755 E35 OVC 20L- 136/42/40/3416G26/993/ DSNT FG 
ALQDS L-CTD PK WND 3326/55/ 8/6// 53007 6002/ 10045 20040

SUMMARY FOR TUESDAY, OCTOBER 23, 2018 

TEMPERATURE (DEGREES F)
MAX.....53   NORMAL.....58
MIN.....40   NORMAL.....40
MEAN....47   NORMAL.....49

DEPARTURE FROM 30-YEAR NORMAL.......................-2
TOTAL DEPARTURE FOR THE MONTH......................+13 [+0.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............18   DEPARTURE.........+2
TOTAL HEATING UNITS FOR THE MONTH.............273   DEPARTURE........-10
TOTAL HEATING UNITS FOR THE SEASON............360   DEPARTURE........-65
TOTAL HEATING UNITS LAST SEASON TO DATE.......201   DIFFERENCE......+159

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.......727  DIFFERENCE.......+147

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................29 WNW AT  5:32 P.M.
                   AERO.........................29 WNW AT  5:33 P.M.
                   ASOS.........................27 WNW AT  5:46 P.M. 
                   DAVIS........................29 S   AT  5:24 P.M. RMY 29
FASTEST MILE FOR YESTERDAY......................21 WNW AT  5:40 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................21 WNW AT  5:50 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................18 SSE AT  7:30 A.M.
AVERAGE WIND SPEED AND DIRECTION..............9.6 SSE
                   ASOS.......................9.5   
                   DAVIS......................7.1 SSE [163 deg.] **
**Davis malfunctioning  

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.51  DEPARTURE......+0.35
                         ASOS..............0.51
TOTAL PRECIPITATION FOR THE MONTH..........3.32  DEPARTURE......-0.13
                         ASOS..............3.30 
TOTAL PRECIPITATION FOR THE YEAR..........50.52  DEPARTURE......+8.17
                         ASOS.............52.22 


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/..../042/06         21 ENE AERO 18 SSW RMY N/A
10/02 64/53/59/+2/..../000/00         33 S   AERO 32 S   RMY 35 TSTM
10/03 60/52/56/0/..../000/00          18 NNE AERO 14 NNE RMY 14
10/04 69/57/63/+7/..../209/30         29 SSW AERO 29 SSW RMY 32
10/05 64/47/56/0/..../638/92          25 NE  AERO 21 NE  RMY 24
10/06 64/45/55/0/0.00/276/40          23 SSW AERO 23 SSW RMY 25
10/07 75/56/66/+11/..../076/11        28 NE  AERO 24 ENE RMY 27
10/08 56/53/55/+1/..../000/00         22 ENE AERO 20 ENE RMY N/A
10/09 75/56/66/+12/..../211/31        26 WSW AERO 28 SW  RMY 29
10/10 82/65/74/+20/..../496/73        24 WSW AERO 23 WSW RMY 25
10/11 70/56/63/+10/..../.../..        48 NNE AERO 47 NNE RMY 50
10/12 59/44/52/-1/..../.../..         32 NW  AERO 32 NW  RMY 33
10/13 49/40/45/-8/..../.../..         21 WNW AERO 20 WNW RMY 20
10/14 55/37/46/-6/..../.../..         21 W   AERO 18 W   RMY 21
10/15 66/44/55/+3/..../.../..         46 W   AERO 46 W   RMY N/A
10/16 56/41/49/-2/..../.../..         48 W   AERO 48 W   RMY N/A
10/17 60/39/50/-1/..../.../..         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 Low temp since midnight is 39F; normal low is 40F

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 24
HIGH 79F IN 1963
LOW 22F IN 1969
PRECIP 2.96 INCHES IN 1890
SNOWFALL 1.8 INCHES IN 1960
PEAK GUST 70 MPH SE IN 1959

RECORDS FOR OCTOBER 25
HIGH 81F IN 1963
LOW 26F IN 1922,1939
PRECIP 2.45 INCHES IN 2005
SNOWFALL 1.2 INCHES IN 1960
PEAK GUST 72 MPH ESE IN 1980

TODAY'S REPORT PREPARED BY: Nate Iannuccillo & Benjamin Turner