BLUE HILL OBSERVATORY MILTON, MA
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 11, 2010 VETERANS DAY
ALL TIMES ARE IN EASTERN STANDARD TIME
 
SKY FINALLY CLEARS THIS MORNING AS OCEAN
STORM CLOUDS RETREAT OVER THE ATLANTIC
ONE MORE LAST BURST OF NORTH WINDS EARLY TODAY
 
A deck of low stratocumulus which covered the
sky early this morning cleared away during this
morning allowing the most sunshine in a week!
Gusty north winds, which have prevailed for
many days, increased again overnight for one
last burst of several periods of strong winds
this week. Peak gusts reached 35 to 45 MPH 
during the early hours of today before
diminishing later this morning.
  
November temperatures continue to average colder
than normal and this month has become the first
month of 2010 to run colder than normal at least
through the first ten days. 
 
Today's observations: 
 
7 A.M.
Weather: Overcast stratocumulus, break in overcast--line
of clearing extending SW-N, few higher clouds (Ac) visible
distant N
Temperature: 37F, Dew point: 30F; Wind: N at 12G26 kts
Wind: Peak wind gust 31 kts N at 5:56 A.M.
Wind: Direction variable NW to NNE
Sea-level pressure: 30.38 inches Hg, rising 
Visibility: 60 miles, W-NW 80 miles, NE 30 miles,
visibility E-S 20 miles, hazy
6-hour minimum temp: 37F
24-hour precip. 0.05 inch
BHO SA 1155 E26 OVC 60 289/37/30/3512G26/038/ BINOVC/LINE OF 
CLRG XTDNG DSNT SW-N FEW HIER AC CLDS VSB DSNT N VSBY W-NW 80 
NE 30 E-S 20 HAZY NE-S PK WND 0131/1056/ WND 32V03 8/54/
51023 ASOS 70005 MANUAL 70005 10041 20037 
 
10 A.M.
Weather: Scattered stratocumulus, sky clearing during
the past hour
Temperature: 41F, Dew point: 31F; Wind: N at 14G25 kts,
Wind: Peak wind gust 26 kts from N at 9:00 A.M.
Wind: Direction variable NW-NE
Sea-level pressure: 30.42 inches Hg, rising  
Visibility: 60 miles, west to northwest 70 miles,
NE-S 25 miles, hazy  
BHO SA 1455 21 SCT 60 303/41/31/3614G25/042/ SKY CLRG PST HR
VSBY W-NW 70 NE-S 25 HAZY PK WND 3626/00 WND 32V04/ 8/500
51014
 
1 P.M. 
Weather: Clear, stratocumulus layer distant E-SE 
Temperature: 45F, Dew point: 28F; Wind: NNE at 9 kts,
Wind: Gust to 20 kts past hour
Wind: direction variable NNW to ENE
Sea-level pressure: 30.40 inches Hg, falling
Visibility: 70 miles, west to northwest 80 miles,
northeast 45 miles, southeast 30 miles  
6-hour max. temp: 45F
BHO SA 1755 CLR 70 295/45/28/0309/040/ SC LYR DSNT E-SE 
WND GUST 20 KTS PST HR WND 34V07 VSBY W-NW 80 NE 45 SE 30/
8/500 56008 10045 20037
  
WEATHER SUMMARY FOR WEDNESDAY, NOVEMBER 10
 
TEMPERATURE (DEGREES F)
MAX.....45     NORMAL.....51
MIN.....39     NORMAL.....36
MEAN....42     NORMAL.....44
 
DEPARTURE FROM 30-YEAR NORMAL...............-2
TOTAL DEPARTURE FOR THE MONTH..............-27 [-2.9 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............23    DEPARTURE........+2
TOTAL HEATING UNITS FOR THE MONTH...........225    DEPARTURE.......+26
TOTAL HEATING UNITS FOR THE SEASON..........702    DEPARTURE.......-88
TOTAL HEATING UNITS LAST SEASON TO DATE.....795    DIFFERENCE......-95
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............38 N   AT  11:02 A.M.  
                   AEROVANE..............42 N   AT  10:51 A.M.     
                   ASOS..................38 N   AT  11:02 A.M.     
                   DAVIS.................42 N   AT  10:51 A.M.     
THE FASTEST MILE FOR YESTERDAY...........25 N   AT  11:39 P.M. * 
MAXIMUM 2-MINUTE ASOS AVERAGE............24 N   AT  11:39 P.M.     
MAXIMUM 2-MINUTE DAVIS AVERAGE...........27 N   AT  11:25 P.M.     
AVERAGE WIND SPEED AND DIRECTION.......16.0 N
                   ASOS................15.2  
                   DAVIS...............15.3 N [350 DEG]
* last of several occurrences....
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.05  DEPARTURE........-0.11
                         ASOS..............0.05
TOTAL PRECIPITATION FOR THE MONTH..........3.14  DEPARTURE........+1.62
                         ASOS..............3.17
TOTAL PRECIPITATION FOR THE YEAR..........56.86  DEPARTURE.......+13.32
                         ASOS.............56.72**
** ASOS missing rainfall due to system failure on 6/24-25
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.....-0.1
TOTAL SNOWFALL FOR THE MONTH................0.1  DEPARTURE.....-0.6
TOTAL SNOWFALL FOR THE SEASON...............0.1  DEPARTURE.....-0.8 
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2010 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
11/1  49/29/39/-8/0.00/446/72    24 WNW
11/2  46/33/40/-6/0.00/.../..    21 NW
11/3  50/28/39/-7/0.00/264/43    20 SSE
11/4  54/37/46/0/0.91/000/00     43 NNE  AERO 45 MPH NE
11/5  59/44/52/+7/0.51/000/00    36 S    AERO 39 MPH S
11/6  48/38/43/-2/.../134/22     20 N
11/7  42/33/38/-7/0.17/T/012/02* 32 NW
11/8  47/32/40/-4/.../0.1/000/00 60 N    AERO 60 MPH N
11/9  50/42/46/+2/.../../006/01  32 N    AERO 35 MPH N
11/10 45/39/42/-2/.../../006/01  38 N    AERO 42 MPH N
 
11/11 our overnight low temp: 37F; the normal low is now 36F
 
* sunshine corrected from zero on previous day's report
 
NEW DAILY RECORDS FOR NOVEMBER 2010
None so far
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 11
HIGH 68 IN 1984
LOW 17 IN 1956
PRECIP 1.14 INCHES IN 1991
SNOWFALL 2.5 IN 1986
PEAK GUST 64 NW IN 1962
 
RECORDS FOR NOVEMBER 12
HIGH 74 IN 1909
LOW 18 IN 1926
PRECIP 3.25 INCHES IN 1947
SNOWFALL 8.1 INCHES IN 1987
PEAK GUST 79e MPH NW IN 1947
 
TODAY'S REPORT PREPARED BY: Robert Skilling