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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, OCTOBER 8, 2012  
ALL TIMES ARE IN EASTERN STANDARD TIME

TWO SEPERATE RAIN EVENTS ON SUNDAY BRING 
SMALL AMOUNTS OF RAINFALL 

The light rain yesterday afternoon lasted only a couple of hours but
additional rainfall during the evening hours brought the daily total
to 0.15 inch.  Clouds increase today shutting our the morning sunshine
with a cloudy afternoon. 

Today's observations:
 
7 A.M.
Weather: Clear, lone stratocumulus over city N, stratocumulus with few 
moderate cumuloform tops extending NNE-SE along/offshore, altocumulus,
few lenticularis, along horizon distant SW-N, few cirrus vicinity S-NNW,
patches dense ground fog/steam fog/thin patch fog N-E below inversion
Temperature: 43F; Dew Point: 42F; Wind: NNW at 7 kts
Sea-level pressure: 30.18 ins. Hg, rising 
Visibility: 50 miles, except 70 miles above inversion NW 
24-hour precip: 0.15 inch
6-hour min. temp: 40F
BHO SA 1155 CLR 50 221/43/42/3307/018/ PTCH SC OVR CTY SC/FEW MDT CUFRM
TOPS XTDNG ALG/OFFSHR NNE-SE AC/ACSL DSNT SW-NN NR/ALG HRZN FEW FEW CI
VC STN S-NNW PTCHS DNS/SHLW FG/GF/STEAM FOG ALQDS FEW THN PTCHS MSTLY
N-E VSBY NW 70 ABV INVSN/ 8/541 53023 ASOS 70014 MANUAL 70015 10045 20040 

10 A.M.  
Weather: Broken stratocumulus, moderate cumuloform tops, broken cirrus,
2 levels  
Temperature: 52F; Dew Point: 44F; Wind: NW at 5 kts,
Wind: Light
Sea-level pressure: 30.24 ins. Hg, rising then more slowly 
Visibility: 55 miles, 70 miles NW 
BHO SA 1455 E20 BKN 250 300 BKN 55 241/52/44/3205/024/ SC MDT CUFRM TOPS
VSBY NW 70 LGT HZ WND LGT/ 8/501 51020 

1 P.M.  
Weather: Broken stratocumulus overcast dnese cirrus/cirrostratus, few
thin spots N-E, few small breaks in overcast N-E, stratocumulus dark
bases, line of lower cumulus along horizon distant ENE-SE 
Temperature: 53F; Dew Point: 41F; Wind: W at 3 kts,
Wind: Light 
Sea-level pressure: 30.25 ins. Hg, rising slightly 
Visibility: 80 miles  
6-hour max. temp: 54F  
BHO SA 1755 E35 BKN 220 OVC 80 244/53/41/2703/025/ LINE CU OFFSHR DSNT
ENE-SE SC DRK BASES DNS CI/CS FEW THN SPTS SML BINOVC N-E SUN DMLY VSBL/
8/807 51003 10054 20043  

WEATHER SUMMARY FOR SUNDAY, OCTOBER 7

TEMPERATURE (DEGREES F)
MAX.....57   NORMAL.....63
MIN.....44   NORMAL.....46
MEAN....51   NORMAL.....55
 
DEPARTURE FROM 30-YEAR NORMAL.....................-4
TOTAL DEPARTURE FOR THE MONTH....................+26 [+3.5 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............14    DEPARTURE........+3
TOTAL HEATING UNITS FOR THE MONTH............38    DEPARTURE.......-28
TOTAL HEATING UNITS FOR THE SEASON..........137    DEPARTURE.......-72
TOTAL HEATING UNITS LAST SEASON TO DATE.....136    DIFFERENCE.......+1

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY.............21 WNW AT 11:04 P.M.   
                   AERO..................18 WNW AT 11:12 P.M. *    
                   ASOS..................18 WNW AT 11:12 P.M. 
                   DAVIS.................18 WNW AT 11:12 P.M. RMY 19
THE FASTEST MILE FOR YESTERDAY...........14 W   AT 10:22 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE............14 W   AT 10:22 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE...........28 SSW AT 11:38 A.M.
AVERAGE WIND SPEED AND DIRECTION........6.8 W
                   ASOS.................6.7 
                   DAVIS................6.3 W [260 deg]
* Last of several occurrences...

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.15   DEPARTURE...........+0.00
                         ASOS..............0.14
TOTAL PRECIPITATION FOR THE MONTH......... 0.57   DEPARTURE...........-0.47
                         ASOS..............0.51
TOTAL PRECIPITATION FOR THE YEAR..........29.19   DEPARTURE..........-10.93
                         ASOS.............29.06

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  58/44/51/-4/0.15/.../..         21 WNW AERO 18 MPH WNW RMY 19

10/8  morning low temp: 40F; the normal low is now 46F

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 8
HIGH 81F IN 1916,1990
LOW 28F IN 1919
PRECIP 2.31 INCHES IN 1891
SNOWFALL TRACE IN 1988, 2001 (EARLIEST DATE)
PEAK GUST 60 MPH NE IN 1996

RECORDS FOR OCTOBER 9
HIGH 82F IN 2011
LOW 29F IN 1907,1937
PRECIP 2.54 INCHES IN 1976
SNOWFALL 0.2 INCHES IN 1888
PEAK GUST 81e MPH S IN 1976 (RECORD FOR MONTH)

TODAY'S REPORT PREPARED BY: Robert Skilling/Peter Volpe/Patrick Peters