BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, OCTOBER 10, 2012 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
ANNIVERSARY DATE OF HEAVIEST OCTOBER SNOWFALL
AND HEAVIEST SNOW SO EARLY IN THE SEASON IN 1979
 
Snow accumulated to a record 6.8 inches in 1979
setting a daily, early season, and monthly record.
Later that month the temperature rose into the
80's on one day!
 
The very light showers of yesterday turned to some
light measurable precipitation the form of light
drizzle in the early hours of today.  This morning
light showers and periods of light rain and drizzle
have accumulated to over one tenth of an inch 
as temperatures rise slowly through the 50's with
light ENE to E winds gradually veering to ESE early
this afternoon.  The weather is gloomy with heavy fog
with low stratus clouds draped over the summit.
 
Today's observations:
 
7 A.M.
Weather: Obscurement, heavy fog, light rain shower,
began past hour 
Temperature: 53F; Dew Point: 53F; Wind: E at 9 kts,
Sea-level pressure: 30.05 ins. Hg, falling then rising
Visibility: 1/8 mile, occasionally WSW-W 1 mile, light rain shower
and dense fog
6-hour precip: 0.03
24-hour precip: 0.03
6-hour min. temp: 52F
BHO SA 1155 W3 X 1/8RW-F 176/53/53/0807/005/ VSBY OCNL HIER SW-W 1 
RB30/ 8//// 55009 ASOS 60003 MANUAL 6003/ ASOS 70003
MANUAL 70003 10053 20052 
 
10 A.M. 
Weather: Obscurement, heavy fog, light rain  
Temperature: 55F; Dew Point: 55F; Wind: ENE at 9 kts
Sea-level pressure: 29.99 ins. Hg, falling then more rapidly 
Visibility: 1/4 miles, variable 1/8 to 1/2 mile, SW-W occasional
1 mile
3-hour precip: 0.06
BHO SA 1455 W3 X 1/4VR-F 155/55/55/0709/999/ VSBY 1/8V1/2
VSBY SW-W OCNL 1/ 8//// 58021 MANUAL 6006/ ASOS 60007
 
1 P.M. 
Weather: Obscurement with heavy fog, light drizzle
Temperature: 58F; Dew Point: 58F; Wind: ESE @ 8  kts,
Wind: Direction variable E-SSE
Wind: Direction gradually veering
Sea-level pressure: 29.87 ins. Hg, falling then more slowly
Visibility: 1/8 mile, heavy fog and light drizzle  
6-hour precip: 0.11
6-hour max. temp: 58F 
BHO SA 1755 W3 X 1/8L-F 114/58/58/1208/987/ WND 09V15 WND GRDLY
VEERING/ 8//// 56041 ASOS 60012 MANUAL 6011/ 10058 20053
 
WEATHER SUMMARY FOR TUESDAY, OCTOBER 9
 
TEMPERATURE (DEGREES F)
MAX.....56   NORMAL.....63
MIN.....49   NORMAL.....45
MEAN....53   NORMAL.....54
 
DEPARTURE FROM 30-YEAR NORMAL.....................-1
TOTAL DEPARTURE FOR THE MONTH....................+19 [+1.9 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............12    DEPARTURE........+1
TOTAL HEATING UNITS FOR THE MONTH............67    DEPARTURE.......-22
TOTAL HEATING UNITS FOR THE SEASON..........166    DEPARTURE.......-65
TOTAL HEATING UNITS LAST SEASON TO DATE.....137    DIFFERENCE......+29
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............27 E   AT  4:03 P.M.
                   AERO..................25 ENE AT  4:03 P.M.
                   ASOS..................26 E   AT  4:03 P.M.
                   DAVIS.................24 ENE AT  4:03 P.M.
THE FASTEST MILE FOR YESTERDAY...........18 EBE AT  3:57 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE............20 ENE AT  4:04 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........18 ENE AT  3:57 P.M.
AVERAGE WIND SPEED AND DIRECTION.......11.8 ENE
                   ASOS................11.6
                   DAVIS...............10.5 ENE [070 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03   DEPARTURE...........-0.11
                         ASOS..............0.03
TOTAL PRECIPITATION FOR THE MONTH..........0.60   DEPARTURE...........-0.73
                         ASOS..............0.54
TOTAL PRECIPITATION FOR THE YEAR..........29.22   DEPARTURE..........-11.19
                         ASOS.............29.09
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 2012 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
10/1  66/47/57/0/T/.../..             36 W   AERO 35 MPH WSW RMY 36
10/2  69/53/61/+4/0.12/105/15         18 W   AERO 16 MPH W   RNT 16
10/3  62/58/60/+4/0.02/000/00         20 NE  AERO 18 MPH NE  RMY 18
10/4  61/58/60/+4/0.08/000/00         17 NNE AERO 14 MPH NE  RMY 14
10/5  75/57/66/+10/0.00/.../..        20 SW  AERO 19 MPH SW  RMY 21
10/6  77/48/63/+8/0.20/.../..         36 SSW AERO 37 MPH SSW RMY 36 TSTM
10/7  57/44/51/-4/0.15/.../..         21 WNW AERO 18 MPH WNW RMY 19
10/8  55/40/48/-6/..../.../..         17 WNW AERO 15 MPH WNW RMY N/A
10/9  56/49/53/-1/T/000/00            27 E   AERO 25 MPH ENE RMY 25
 
10/10 morning low temp: 52F; the normal low is now 45F
 
DAILY RECORDS FOR OCTOBER 2012
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 10
HIGH 85F IN 1949
LOW 27F IN 1929
PRECIP 2.02 INCHES IN 1998
SNOWFALL 6.8 INCHES IN 1979 (RECORD FOR MONTH)
PEAK GUST 59 MPH WNW IN 1958
 
RECORDS FOR OCTOBER 11
HIGH 80F IN 1919,1949
LOW 28F IN 1993
PRECIP 0.96 INCHES IN 1903
SNOWFALL (NONE)
PEAK GUST 66e MPH WNW IN 1941
 
TODAY'S REPORT PREPARED BY: Robert Skilling