BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, OCTOBER 13, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Clear, few cirrocumulus
Temperature: 39F, Dew point: 34F, Wind: W at 09 kts 
Sea-level pressure: 29.89 inches Hg, rising
Visibility: 80 miles     
6-hour min temp: 37F
24-hour precipitation: 0.18 inch  
BHO SA 1155 CLR 80 122/39/34/2609/989/ FEW CC/ 
8/009 53020 ASOS 70018 MANUAL 70018 10041 20037

10 A.M.   
Weather: Clear
Temperature: 50F, Dew point: 35F, Wind: W at 13 kts
Sea-level pressure: 29.91 inches Hg, rising
Visibility: 75 miles
BHO SA 1455 CLR 75 129/50/35/2813/991/ FEW SC DSNT WSW-NW 
WND 22V31/ 8/500 50007
 
1 P.M.   
Weather: Scattered cumulus
Temperature: 57F, Dew point: 34F Wind: WSW @ 09G17 kts  
Sea-level pressure: 29.88 inches Hg, falling
Visibility: 75 miles
6-hourly max. temp. 57F
BHO SA 1755 45 SCT 75 118/57/34/2409G17/988/ 
WND 16V31/ 8/100 58011 10057 20039
 
WEATHER SUMMARY FOR FRIDAY, OCTOBER 12
 
TEMPERATURE (DEGREES F)
MAX.....62    NORMAL.....62 
MIN.....42    NORMAL.....44
MEAN....52    NORMAL.....53
DEPARTURE FROM 30-YEAR NORMAL.........- 1 
TOTAL DEPARTURE FOR THE MONTH.........+85 [+6.9 DEGREES/DAY]  
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............42 W   AT  2:33 P.M.        
                   AEROVANE.............. 43 W   AT  2:33 P.M.        
                   ASOS...................40 WNW AT  2:33 P.M.       
                   DAVIS..................41 W   AT  5:49 P.M.       
FASTEST MILE FOR YESTERDAY................30 W   AT  2:27 P.M. *             
MAXIMUM 2-MINUTE ASOS AVERAGE.............29 W   AT  2:20 P.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE............31 W   AT  2:20 P.M. 
AVERAGE WIND SPEED AND DIRECTION.........15.7 W   
                   ASOS..................15.7   
                   DAVIS.................15.7 WSW [239 deg]   
 
* latest of several occurrences..
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.18  DEPARTURE.....+0.04
                         ASOS..............0.18 
TOTAL PRECIPITATION FOR THE MONTH..........1.23  DEPARTURE.....-0.45  
                         ASOS..............1.25    
TOTAL PRECIPITATION FOR THE YEAR..........34.11  DEPARTURE.....-5.17
                         ASOS.............33.37  
 
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 57/50/54/0/0.09/000/00   20 ESE
10/11 58/55/57/+4/0.37/000/00  33 ENE
10/12 62/42/52/-1/0.18/135/20  42 W
  
10/13 morning low temp. 37F; normal low now 44F
 
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.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 13
HIGH 84 IN 1930,1954
LOW 30 IN 1934,1936,1988
PRECIP 5.92 INCHES IN 1895
SNOWFALL 4.2 INCHES IN 1934
PEAK GUST 46e MPH W IN 1950
 
RECORDS FOR OCTOBER 14
HIGH 79F IN 2000
LOW 28F IN 1958
PRECIP 2.69 INCHES IN 1990
SNOWFALL 2.0 INCHES IN 1913
PEAK GUST 63e W IN 1976
 
TODAY'S REPORT PREPARED By: Stephanie Radner