BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, SEPTEMBER 7, 2007    
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TEMPERATURE TIES RECORD OF 91 DEGREES
 
The temperature has reached 91 degrees as of 
2:30 PM EDT this afternoon, equaling the record 
maximum temperature set in 1945 on this date.  
Thick haze replaced early morning fog and is 
partially obscuring the sky today, keeping 
visibility around 10 miles.
 

Today's observations:
 
7 A.M.   
Weather: Clear, sky partially obscured with fog   
Temperature: 66F, Dew point: 64F, Wind: S at 10 kts
Sea-level pressure: 30.20 inches Hg, steady
Visibility: 8 miles
6-hour min temp: 62F 
24-hour rainfall: 0.00 
BHO SA 1155 –X CLR 8 228/66/64/1810/020/ F2 THN F ALQDS/ 
50001 10066 20062
 
10 A.M.   
Weather: Clear, sky partially obscured with haze
Temperature: 81F, Dew point: 65F, Wind: SW at 14 kts  
Wind: variable S-W  
Sea-level pressure: 30.18 inches Hg, falling
Visibility: 12 miles  
BHO SA 1455 –X CLR 12 220/81/65/2214/018/ H1 HAZY WND 18V27/ 58007
 
1 P.M.   
Weather: Clear, sky partially obscured with haze       
Temperature: 90F, Dew point: 64F, Wind: SW at 14G19 kts  
Sea-level pressure: 30.13 inches Hg, falling
Visibility: 10 miles  
6-hour max. temp: 90F     
BHO SA 1755 –X CLR 10 202/90/64/2214G19/013/ H1 HAZY/ 58018 
10090 20066
 
WEATHER SUMMARY FOR THURSDAY, SEPTEMBER 6
 
TEMPERATURE (DEGREES F)
MAX.....76    NORMAL.....74 
MIN.....55    NORMAL.....56
MEAN....66    NORMAL.....65
DEPARTURE FROM 30-YEAR NORMAL.........+1
TOTAL DEPARTURE FOR THE MONTH........ +8  [+1.1 deg/day] 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............31 S   AT 5:07 P.M.    
                   AEROVANE...............30 S   AT 5:09 P.M.     
                   ASOS...................N/A  #
                   DAVIS..................36 S   AT 4:05 P.M. 
FASTEST MILE FOR YESTERDAY............... 24 S   AT 5:11 P.M. *        
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............23 S   AT 5:11 P.M.  
AVERAGE WIND SPEED AND DIRECTION......... 14.9 S  
                   ASOS...................N/A  #
                   DAVIS..................13.9 SSE [163 deg]    
* last of several occurrences..
 
# ASOS WINDS SWITCHED OFF BY NWS 6/6, IT IS NOT KNOWN WHEN 
  THAT DATA WILL RESUME
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.13
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........0.00  DEPARTURE.....-0.78  
                         ASOS..............0.00    
TOTAL PRECIPITATION FOR THE YEAR..........30.99  DEPARTURE.....-3.26
                         ASOS.............30.23    
 
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
9/1  79/57/68/+1/0/790/100      
9/2  78/51/65/-1/0/787/100      
9/3  85/57/71/+5/0/760/97     31 SSW AERO 28 MPH SSW 
9/4  76/61/69/+3/0/641/82     28 NW  AERO 26 MPH NW
9/5  74/53/64/-1/0/732/94     21 ESE 
9/6  76/55/66/+1/0/.../..     31 S
 
9/7  morning low temp. of 62F; normal low now 56F
 
NEW DAILY RECORDS FOR SEPTEMBER 2007: 
 
None to date 
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR SEPTEMBER 7
HIGH 91F IN 1945
LOW 40F IN 1888
PRECIP 2.95 INCHES IN 1891
PEAK GUST 58e MPH W IN 1941
 
RECORDS FOR SEPTEMBER 8
HIGH 91F IN 1945
LOW 42F IN 1978
PRECIP 0.74 INCHES IN 1888
PEAK GUST 40e MPH NW IN 1941, WSW IN 1944
 
TODAY'S REPORT PREPARED By: Stephanie Radner