BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, SEPTEMBER 10, 2007    
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Sky obscured with fog   
Temperature: 58F, Dew point: 58F, Wind: NNE at 7 kt 
Sea-level pressure: 30.07 inches Hg, rising
Visibility: 1/8 of a mile 
6-hour min temp: 58F
24-hour rainfall: trace
BHO SA 1155 W2 X 1/16F 183/58/58/0207/007/ 8//// 53001 
MANUAL 6000/ 10058 20058
 
10 A.M.   
Weather: Overcast stratus, sky partially obscured with fog
Temperature: 62F, Dew point: 59F, Wind: NE at 6 kt 
Sea-level pressure: 30.07 inches Hg, steady
Visibility: 1 1/2 miles, variable 1/2-2 miles  
BHO SA 1455 –X E4 OVC 11/2VF 183/62/59/0406/007/ 
F8 VSBY 1/2V2/ 8/6// 50000
 
1 P.M.
Weather: Overcast stratus, sky partially obscured with fog
Temperature: 64F, Dew point: 60F, Wind: NE at 6 kt 
Sea-level pressure: 30.05 inches Hg, falling
Visibility: 2 miles, variable 1-3 miles  
BHO SA 1755 –X E6 OVC 2VF 176/64/60/0406/005/ 
F6 VSBY 1V3/ 8/6// 56009 10064 20058
 
WEATHER SUMMARY FOR SUNDAY, SEPTEMBER 9
 
TEMPERATURE (DEGREES F)
MAX.....72    NORMAL.....73 
MIN.....57    NORMAL.....55
MEAN....65    NORMAL.....64
DEPARTURE FROM 30-YEAR NORMAL........+1
TOTAL DEPARTURE FOR THE MONTH........+36  [+3.8 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............28 NNE AT 8:12 A.M.    
                   AEROVANE...............34 NNE AT 8:12 A.M.     
                   ASOS...................N/A  #
                   DAVIS..................27 NNE AT 8:12 A.M. 
FASTEST MILE FOR YESTERDAY............... 18 NE  AT 9:34 A.M.        
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............19 NNE AT 9:35 A.M.  
AVERAGE WIND SPEED AND DIRECTION..........9.5 NNE 
                   ASOS...................N/A  #
                   DAVIS..................9.8 NE [053 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...trace  DEPARTURE.....-0.14
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........0.16  DEPARTURE.....-1.04  
                         ASOS..............0.16    
TOTAL PRECIPITATION FOR THE YEAR..........31.15  DEPARTURE.....-3.52
                         ASOS.............30.39    
 
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  92/62/77/+12/0/657/85    30 SSW
9/8  93/67/80/+15/0/.../..    43 S
9/9  72/57/65/+1/0.16/000/00  28 NNE AERO 24 MPH NNE
 
9/10 morning low temp. of 58F; normal low now 55F
 
NEW DAILY RECORDS FOR SEPTEMBER 2007: 
 
9/7 - RECORD HIGH TEMPERATURE 92; PREVIOUS 91 IN 1945.
9/8 - RECORD HIGH TEMPERATURE 93; PREVIOUS 91 IN 1945.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR SEPTEMBER 10
HIGH 90F IN 1931,1989
LOW 41F IN 1956
PRECIP 5.60 INCHES IN 1999 (DAILY RECORD FOR SEPTEMBER)
PEAK GUST 48 MPH NW IN 1972
 
RECORDS FOR SEPTEMBER 11
HIGH 93F IN 1983
LOW 37F IN 1917
PRECIP 5.23 INCHES IN 1954 (HURRICANE EDNA)
PEAK GUST 101 MPH NW IN 1954 (HURRICANE EDNA)
 
TODAY'S REPORT PREPARED By: Stephanie Radner