BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, OCTOBER 30, 2015 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HIGH TEMPERATURE YESTERDAY AT 72F--JUST 2 SHORT OF RECORD
UNDER SUNNY SKY 58F TODAY IS SLIGHTLY ON MILD SIDE
VISIBILITY INCREASES TO 90 MILES BY EARLY AFTERNOON 
 
The high of 72F yesterday fell 2 degrees short of the record
for the date set at 74F in 1959.
Mostly clear with plenty of sunshine today combined with
the new dry air mass for a high of 59F by early this
afternoon as the dew point ranged in the mid-30's.
Visibility was spectacular by early afternoon with a
view of 90 miles from the summit being observed. 
 
Today's Observations:
 
7 A.M.
Weather: Clear, patch of stratocumulus distant W-NW, cirrus
distant ESE-SSW
Temperature: 45F; Dew Point: 32F; Wind: W at 14 kts,
Sea-level pressure: 29.76 ins. Hg, rising then more rapidly
Visibility: 50 miles, light distant haze
6-hr Max temp: 51F
6-hr Min temp: 44F
24-hr precip: trace
BHO SA 1155 CLR 50 078/45/32/2614/976/ PTCH SC DSNT W-NW
CI DSNT ESE-SSW LGT DSNT HZ/ 8/501 53017 10051 20044  
 
10 A.M.
Weather: Scattered cumulus forming, scattered cirrus,
distant E-SSW 
Temperature: 54F; Dew Point 38F; Wind: W at 17G27 Kts
Peak Wind: 27 knots W at 9:48 AM EST
Sea-level pressure: 29.80 ins. Hg, rising then more slowly
Visibility: 60 miles, mountains in/out clouds 60-70 miles distant NW   
BHO SA 1455 40 SCT 70 090/54/38/2717G27/980/ CU FRMG CI DSNT 
E-SSW MTNS IN/OUT OF CLDS 60-70 NW PK 2627/48/ 8/101 51012
 
1 P.M.
Weather: Scattered cumulus 
Temperature: 57F; Dew Point 34F; Wind: WNW at 16G24 kts
Sea-level pressure: 29.82 ins. Hg, rising then more slowly 
Visibility: 90 miles
6-hr max. temp. 59F
6-hr min. temp. 45F
6-hr precip: none
BHO SA 1755 50 SCT 90 099/57/34/2916G25/982/ 8/100 51009 
10059 20045
 
SUMMARY FOR THURSDAY, OCTOBER 29, 2015
  
TEMPERATURE (DEGREES F)
MAX.....72   NORMAL.....56
MIN.....52   NORMAL.....39
MEAN....62   NORMAL.....47
 
DEPARTURE FROM 30-YEAR NORMAL......................+15
TOTAL DEPARTURE FOR THE MONTH......................+ 5  [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..........-5
TOTAL COOLING UNITS FOR THE SEASON............810   DEPARTURE........+208
TOTAL COOLING UNITS LAST SEASON TO DATE.......595   DIFFERENCE.......+215
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............3   DEPARTURE.........-15
TOTAL HEATING UNITS FOR THE MONTH.............373   DEPARTURE.........-12
TOTAL HEATING UNITS FOR THE SEASON............416   DEPARTURE........-111
TOTAL HEATING UNITS LAST SEASON TO DATE.......390   DIFFERENCE........+26

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................53  S   AT  2:50 A.M.   
                   ASOS........................60  S   AT  2:50 A.M.     
                   DAVIS.......................59  SSW AT  2:49 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................42  S   AT  4:48 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................41  S   AT  2:49 A.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE.................40 SSW  AT  2:49 A.M.      
AVERAGE WIND SPEED AND DIRECTION...............20.5 W
                   ASOS........................19.4   
                   DAVIS.......................18.6 SW  [230 Deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....trace DEPARTURE.....-0.16
                         ASOS...............0.00
TOTAL PRECIPITATION FOR THE MONTH...........2.69  DEPARTURE.....-1.69
                         ASOS...............2.73
TOTAL PRECIPITATION FOR THE YEAR...........36.83  DEPARTURE.....-6.63 
                         ASOS................N/A ***
*** ASOS annual total not available due to erroneous readings
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
  DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
 
10/1  55/51/53/-4/..../000/00               39 NE  RMY N/A
10/2  51/47/49/-8/..../000/00               40 NE  RMY 43
10/3  51/45/48/-8/..../000/00               38 NE  RMY N/A
10/4  55/49/52/-4/0.00/474/68               35 E   RMY 40
10/5  59/46/53/-3/T/125/18                  21 NE  RMY 20
10/6  68/43/56/+1/0.00/663/96               17 NW  RMY 17
10/7  69/46/58/+3/0.00/640/93               20 W   RMY 20
10/8  63/49/56/+2/0.00/678/99               21 S   RMY N/A
10/9  68/50/59/+5/0.27/130/19               45 S   RMY 49
10/10 59/44/53/-2/0.00/673/99               33 NNW RMY N/A
10/11 67/46/57/+4/0.00/582/86               26 SW  RMY 28
10/12 76/50/63/+10/0.00/647/96              22 SSW RMY 24
10/13 70/55/63/+10/0.27/208/31              23 S   RMY 24
10/14 66/46/56/+4/0.00/428/64               26 W   RMY 29
10/15 60/41/51/-1/0.00/659/99               20 SW  RMY 27
10/16 60/44/52/+1/T/471/71                  31 W   RMY 34
10/17 54/35/45/-6/T/482/73                  30 WNW RMY 33
10/18 45/28/37/-14/0.00/480/73              24 NNW RMY 25
10/19 47/26/37/-13/0.00/648/99              25 SSW RMY 30 
10/20 65/43/54/+4/0.00/.../..               28 SW  RMY 28
10/21 59/51/55/+5/0.01/.../..               18 SSE RMY 21 
10/22 71/51/61/+12/T/.../..                 31 W   RMY 34
10/23 55/34/45/-4/0.00/.../..               31 NNW RMY 34
10/24 46/33/40/-9/0.00/.../..               15 SSE RMY N/A  
10/25 59/44/52/+3/0.04/.../..               29 N   RMY 31
10/26 53/38/46/-2/0.00/.../..               23 NNW RMY 20
10/27 56/35/46/-2/0.00/.../..               15 SE  RMY N/A
10/28 64/44/54/+6/..../.../..               53 SSE RMY N/A
10/29 72/52/62/+15/..../.../..              53 S   RMY N/A
 
10/30 low since midnight is 44F; normal low is now 38F 
 
DAILY RECORDS FOR OCTOBER 2015
 
-NONE SO FAR.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 30
HIGH 75F IN 1946,1989
LOW 21F IN 1928
PRECIP 1.85 INCHES IN 1917
SNOWFALL 2.0 INCHES IN 2011
PEAK GUST 66 NW IN 1963
 
RECORDS FOR OCTOBER 31
HIGH 79F IN 1946
LOW 22F IN 1904
PRECIP 3.74 INCHES IN 1991
SNOWFALL TRACE IN 1906
PEAK GUST 70e S IN 1945
 
TODAY'S REPORT PREPARED BY: Robert Skilling