BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, NOVEMBER 3, 2009  
ALL DATA IN EASTERN STANDARD TIME
 
SUNSHINE AND MILDER TEMPERATURES TODAY
 
After a mostly overcast day on Monday,
today is turning out sunny and milder.
A few hours of light rain showers left
only a trace of rain yesterday.  The
high temperature was held to 49F or
5 degrees below the average.  Sunshine
began today soon after sunrise and
continues into this afternoon bringing
temperatures up from 36F early this
morning to the mid-50's. 
 
Today's observations:
 
7 A.M.
Weather: Scattered altocumulus translucidus radiatus SW-NW,
few altocumulus castellanus NNW, stratocumulus/altocumulus
to the distant NE-SE, few altocumulus castellanus distant E-ESE,
lone patch thin stratus fractus below summit southeast, heavy dew  
Temperature: 37F, Dew point: 36F, Wind: NNW at 7 kts
Sea-level pressure: 30.06 inches Hg, rising
Visibility: 20 miles, thin fog  
6-hour minimum temp: 36F
24-hourly precipitation: trace
BHO SA 1155 CLR 20 179/37/36/3307/006/ AC SW-N
FEW ACC NNW SC/AC DSNT NE-SE FEW ACC DSNT E-ESE
LONE PTCH THN STFRA BLO SMT SE THN FG ALQDS HVY DEW/
8/580 55006 10043 20036
 
10 A.M.
Weather: Clear, stratocumulus layer along/offshore distant NE-SSE
with moderate cumuluform tops, cumulus forming distant ESE-SE,
altocumulus distant west thru north  
Temperature: 47F, Dew point: 35F, Wind: NW at 2 kts (estimated)
Sea-level pressure: 30.04 inches Hg, falling
Visibility: 40 miles, except 50 miles WNW, light distant haze
BHO SA 1455 CLR 40 172/47/35/E3202/004/
SC LYR ALG/OFFSHR MDT TOPS DSNT NE-SSE
CU FRMG DSNT ESE-SE AC DSNT W-N VSBY WNW 45
LGT DSNT HZ/ 8/830 58007
 
1 P.M. 
Weather: Clear, few cumulus fractus, small cumulus forming,
altocumulus distant SW-NW, cirrus distant W-NW 
Temperature: 55F, Dew point: 38F, Wind: SW at 9 kts,
Wind: Direction variable south to west 
Sea-level pressure: 29.97 inches Hg, falling
Visibility: 50 miles, light distant haze  
6-hourly max. temp: 56F
BHO SA 1755 CLR 50 148/55/38/2309/997/
FEW CUFRA/SML CU FRMG ALQDS AC DSNT SW-NW
CI DSNT W-NW LGT DSNT HZ WND 19V27/
8/141 56024 10056 20037
 
WEATHER SUMMARY FOR MONDAY, NOVEMBER 2
 
TEMPERATURE (DEGREES F)
MAX.....49     NORMAL.....54
MIN.....42     NORMAL.....38
MEAN....46     NORMAL.....46
 
DEPARTURE FROM 30-YEAR AVERAGE.......... . 0
TOTAL DEPARTURE FOR THE MONTH.............+4 [+2.0 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............19    DEPARTURE.........0
TOTAL HEATING UNITS FOR THE MONTH............33    DEPARTURE........-5
TOTAL HEATING UNITS FOR THE SEASON..........654  DEPARTURE.........+25
TOTAL HEATING UNITS LAST SEASON TO DATE.....589  DIFFERENCE........+65
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............29 NE  AT  7:47 A.M. 
                   ASOS..................29 NE  AT  8:23 A.M.  
                   AEROVANE..............27 NE  AT  8:23 A.M. * 
                   DAVIS.................28 NE  AT  8:22 A.M.
FASTEST MILE FOR YESTERDAY.............. 20 NE  AT  8:24 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE............21 NE  AT  8:25 A.M.   
MAXIMUM 2-MINUTE DAVIS AVERAGE...........22 NE  AT  8:24 A.M. 
AVERAGE WIND SPEED AND DIRECTION.......11.6 NNE
                   ASOS................10.9
                   DAVIS...............11.3 NNE [030 DEG]
* last of several occurrences....
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...trace   DEPARTURE....-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR MONTH  ............0.05   DEPARTURE....-0.25
                         ASOS..............0.03
TOTAL PRECIPITATION FOR THE YEAR..........45.16   DEPARTURE....+2.84  
                         ASOS.............46.34
                                                                 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2009 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  58/44/51/+4/0.05/.../..   
11/2  49/42/46/0/T/.../..     
 
11/3  our morning low temp: 36F; the normal low is now 38F 
 
 
NEW DAILY RECORD FOR NOVEMBER 2009
None      
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 3
HIGH 75 IN 1990
LOW 21 IN 1891
PRECIP 1.92 INCHES IN 1951
SNOWFALL 0.1 IN 1951
PEAK GUST 96e SSE IN 1951
 
RECORDS FOR NOVEMBER 4
HIGH 77 IN 1987
LOW 22 IN 1891
PRECIP 3.27 INCHES IN 1910
SNOWFALL 6.4 IN 1945
PEAK GUST 73 WNW IN 1965
 
TODAY'S REPORT PREPARED BY: Robert Skilling