BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, OCTOBER 9, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TEMPERATURES ARE WAY UP AND WINDS WAY DOWN!
 
MONTH OF OCTOBER 10 DEGREES WARMER THAN NORMAL TO DATE 
ALSO INCLUDES AN UNUSUAL STRETCH OF LOW WIND SPEED DAYS
 
Not only has October been unusually warm to date averaging
10 degrees above normal in temperature for the first eight 
days but its has been unusually calm in terms of wind. 
The first eight days have averaged only 8.2 MPH with a daily
range from 6.4 to 9.3 MPH!  That's low for any time of year
here at the summit of Blue Hill but especially so for October 
when we expect the usual seasonal increase in wind speeds.
 
Yesterday's gloomy, foggy and cool weather included a long 
overdue substantial rainfall of over one half inch but the 
month continues one half inch drier than normal and the year
more than 5 inches down from the normal to date.  
 
Today's observations:
 
7 A.M.   
Weather: Thin broken high clouds  
Temperature: 52F, Dew point: 45F, Wind: N at 12G19 kts 
Wind: Variability NNW-NNE
Sea-level pressure: 29.90 inches Hg, rising
Visibility: 50 miles     
6-hour min temp: 50F
6-hour precip: 0.08 inch 
24-hour precipitation: 0.21 inch  
BHO SA 1155 130 SCT 150 SCT 250 –BKN 300 –BKN 50 126/52/45/3612G19/990/ 
FEW SC DSNT NNE-SSE FEW ACC DSNT S-SW FEW ACSL W VSBY WNW 45 WND 33V03/ 
8/581 51022 ASOS 60007 MANUAL 6008/ ASOS 70021 MANUAL 70021 10052 20050 
 
10 A.M.   
Weather: Scattered stratocumulus clouds, broken cirrocumulus, cirrus 
Temperature: 57F, Dew point: 44F, Wind: NNW at 07 kts
Wind: Variability N-E  
Sea-level pressure: 29.95 inches Hg, falling
Visibility: 60 miles  
BHO SA 1455 27 SCT 220 BKN 250 BKN 60 141/57/44/0414G21/995/ 
CC ALQDS WND 35V08/ 8/509 50015 
 
1 P.M.   
Weather: High thin overcast cirrus clouds, few stratocumulus  
Temperature: 58F, Dew point: 45F Wind: NE at 11 kts 
Wind: Variablilty NNE-E  
Sea-level pressure: 29.93 inches Hg, falling
Visibility: 55 miles  
BHO SA 1755 250 –BKN 300 –OVC 55 135/58/45/0511/993/ BINOVC FEW SC ALQDS 
FEW CC LGT DSNT HZ WIND 02V08/ 8/501 58006 10059 20052  
   
WEATHER SUMMARY FOR MONDAY, OCTOBER 8
 
TEMPERATURE (DEGREES F)
MAX.....58    NORMAL.....63 
MIN.....52    NORMAL.....45
MEAN....55    NORMAL.....54
DEPARTURE FROM 30-YEAR NORMAL.........+ 1 
TOTAL DEPARTURE FOR THE MONTH.........+81 [+9.9 DEGREES/DAY]  

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............21  S  AT 6:49 A.M.       
                   AEROVANE.............. 21  S  AT 6:49 A.M.       
                   ASOS...................20  S  AT 6:49 A.M.       
                   DAVIS..................20  S  AT 7:17 A.M.        
FASTEST MILE FOR YESTERDAY................14  S  AT 7:11 A.M. *              
MAXIMUM 2-MINUTE ASOS AVERAGE.............15 SSW AT 7:13 A.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE............16 S   AT 2:49 A.M. 
AVERAGE WIND SPEED AND DIRECTION..........6.4 S 
                   ASOS...................5.6   
                   DAVIS..................6.2 SSW [200 deg]  
* last of several occurrences....
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.21  DEPARTURE.....+0.07
                         ASOS..............0.21 
TOTAL PRECIPITATION FOR THE MONTH..........0.58  DEPARTURE.....-0.54  
                         ASOS..............0.57    
TOTAL PRECIPITATION FOR THE YEAR..........33.46  DEPARTURE.....-5.26
                         ASOS.............32.69    
 
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 morning low temp. 50F; normal low now 45F  
     morning rainfall through 7 a.m. 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.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 9
HIGH 81 IN 1909
LOW 29 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)
 
RECORDS FOR OCTOBER 10
HIGH 85 IN 1949
LOW 27 IN 1929
PRECIP 2.02 INCHES IN 1998
SNOWFALL 6.8 INCHES IN 1979 (RECORD FOR MONTH)
PEAK GUST 59 MPH WNW IN 1958
 
TODAY'S REPORT PREPARED By: Robert Skilling