BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, OCTOBER 31, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Scattered cirrus/cirrostratus 
Temperature: 47F, Dew point: 42F, Wind: S at 10 kts 
Sea-level pressure: 30.39 inches Hg, rising
Visibility: 12 miles, light haze  
6-hour min temp: 45F
24-hour precipitation: 0.00 inches 
BHO SA 1155 250 –SCT 12 291/47/42/1810/039/ FEW CS 
PTCHS GF ALQDS PTCHS SHLW STEAM FG OVR PONDS SE DSSPTNG 
LGT HZ PARAHELION/ 8/001 53005 10049 20045  
   
10 A.M.   
Weather: Scattered cumulus, thin scattered cirrus
Temperature: 59F, Dew point: 48F, Wind: S at 13G22 kts
Sea-level pressure: 30.37 inches Hg, falling
Visibility: 15 miles, hazy 
BHO SA 1455 40 SCT 250 –SCT 15 284/59/48/1713G22/037/ HAZY/ 
8/101 58007
 
1 P.M.   
Weather: Broken cumulus, overcast cirrostratus
Temperature: 60F, Dew point: 47F, Wind: S at 14G21 kts
Sea-level pressure: 30.29 inches Hg, falling
Visibility: 20 miles, light haze
6 hour max. temp. 62F 
BHO SA 1755 E35 BKN 220 OVC 20 258/60/47/1714G21/029/ 
THN SPTS IOVC HIER CLDS VSBL LGT HZ/ 8/107 58026 10062 20047
 

WEATHER SUMMARY FOR TUESDAY, OCTOBER 30
 
TEMPERATURE (DEGREES F)
MAX.....60    NORMAL.....55 
MIN.....37    NORMAL.....39
MEAN....49    NORMAL.....47
DEPARTURE FROM 30-YEAR NORMAL...........+2 
TOTAL DEPARTURE FOR THE MONTH.........+191 [+6.2 DEGREES/DAY]  
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............25 SW  AT  2:20 A.M. *           
                   AEROVANE.............24 SW  AT  2:19 A.M.       
                   ASOS.................23 WSW AT  2:20 A.M.    
                   DAVIS................28 SSW AT  1:17 A.M.     
FASTEST MILE FOR YESTERDAY..............19 SW  AT  2:20 A.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE...........16 W   AT  6:29 A.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE..........19 SW  AT  1:17 A.M.     
AVERAGE WIND SPEED AND DIRECTION......10.4 WSW
                   ASOS...............10.0  
                   DAVIS..............11.0 WSW [243 deg]
* Last of several occurrences.
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.15
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........2.66  DEPARTURE.....-1.61 
                         ASOS..............2.71    
TOTAL PRECIPITATION FOR THE YEAR..........35.54  DEPARTURE.....-6.33
                         ASOS.............34.83  
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 2007...CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
10/1  67/49/58/+1/0/592/84     18 S 
10/2  72/50/61/+5/0/323/46     20 SSE
10/3  73/61/67/+11/0/077/11    23 SSE
10/4  84/65/75/+19/0/425/61    21 SSW
10/5  86/61/74/+19/0/618/89    21 SSW 
10/6  83/62/73/+18/0/526/76    23 WSW
10/7  71/52/61/+7/0.01/110/16  29 NNE 
10/8  58/52/55/+1/0.49/000/00  21 S
10/9  59/50/55/+1/0.10/580/85  29 NNW
10/10 57/50/54/0/0.08/000/00   20 ESE *
10/11 58/55/57/+4/0.37/000/00  33 ENE TSTM late evening 
10/12 62/42/52/-1/0.18/135/20  42 W   Aero 43 MPH W 
10/13 59/37/48/-4/0/665/99     25 WNW
10/14 59/42/51/-1/0/629/94     32 W 
10/15 62/38/50/-2/0/426/64     29 WNW   
10/16 61/43/52/+1/0/650/98     25 NW 
10/17 68/41/55/+4/0/455/69     20 SW
10/18 75/57/66/+15/0/151/23    21 S
10/19 70/63/67/+16/0.60/000/00 47 SSE Aero 51 MPH SSE
10/20 70/54/62/+12/0.19/229/35 43 W   Aero 44 MPH W
10/21 73/51/62/+12/0/643/99    25 SSW 
10/22 80/58/69/+19/0/595/92    29 S 
10/23 74/58/66/+17/0.02/135/21 52 SSW  Aero 55 MPH SSW 
10/24 63/50/57/+8/0.10/000/00  24 NW
10/25 54/48/51/+2/0.01/211/33  22 NNE 
10/26 58/44/51/+3/0.01/375/59  25 E  
10/27 66/52/59/+11/0.50/000/00 43 S    Aero 44 MPH S 
10/28 55/36/46/-2/0/631/100    39 WNW  Aero 42 MPH WNW 
10/29 49/30/40/-7/0/629/100    22 WNW  
10/30 60/37/49/+2/0/619/99     25 SW
 
10/31 morning low temp. 45F; normal low is now 39F

* 10/10 precipitation corrected from 0.09 to 0.08 inch

      
NEW DAILY RECORDS FOR OCTOBER 2007:
 
10/4 - RECORD HIGH TEMPERATURE 84F; PREVIOUS 83F IN 1898 and 1959.
     - EQUALED RECORD HIGH MINIMUM TEMPERATURE OF 65F; ALSO IN 1927. 
10/5 - RECORD HIGH TEMPERATURE 86F; PREVIOUS 85F IN 1922
10/6 - EQUALED RECORD HIGH TEMPERATURE 83F; ALSO IN 1990. 
10/19- EQUALED RECORD HIGH MINIMUM TEMPERATURE 63F; PREVIOUS IN 1928. 
10/23 -EQUALED RECORD HIGH MINIMUM TEMPERATURE 58F; ALSO IN 1942
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 31
HIGH 79 IN 1946
LOW 22 IN 1904
PRECIP 3.74 INCHES IN 1991
SNOWFALL TRACE IN 1906
PEAK GUST 70e S IN 1945
 
RECORDS FOR NOVEMBER 1
HIGH 75 IN 2003
LOW 22 IN 1913,1923
PRECIP 2.93 INCHES IN 1985
SNOWFALL TRACE IN 1906,1951
PEAK GUST 78 ESE IN 1997
 
TODAY'S REPORT PREPARED By: Stephanie Radner