BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, SEPTEMBER 16, 2007    
ALL TIMES ARE IN EASTERN STANDARD TIME
 

Today's observations:
 
7 A.M.   
Weather: Scattered altocumulus
Temperature: 47F, Dew point: 41F, Wind: WNW at 10 kt 
Sea-level pressure: 30.28 inches Hg, rising
Visibility: 90 miles   
6-hour min temp: 45F
24-hour rainfall: 0.09 in 
BHO SA 1155 130 SCT 90 252/47/41/2910/028/ 
FEW ACSL N AND SW CLR W-NW VSBY ESTMD 100+/ 
8/040 53025 70009 10048 20045
 
10 A.M.   
Weather: Broken stratocumulus
Temperature: 55F, Dew point: 41F, Wind: NW Variable 7 kt 
Sea-level pressure: 30.30 inches Hg, rising
Visibility: 80 miles
BHO SA 1455 40 BKN 80 263/55/41/3107/030/ WND 21V02/ 8/500 51001
 

WEATHER SUMMARY FOR SATURDAY, SEPTEMBER 15
 
TEMPERATURE (DEGREES F)
MAX.....63    NORMAL.....71 
MIN.....49    NORMAL.....54
MEAN....56    NORMAL.....62
DEPARTURE FROM 30-YEAR NORMAL.........-6 
TOTAL DEPARTURE FOR THE MONTH........+31  [+1.9 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............36 WNW AT 10:53 A.M. 
                   AEROVANE...............34 WNW AT 10:47 A.M.
                   ASOS...................N/A  #
                   DAVIS..................34 W   AT 10:50 A.M.
FASTEST MILE FOR YESTERDAY................27 WNW AT 10:52 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............26 WNW AT  1:48 P.M.
AVERAGE WIND SPEED AND DIRECTION..........11.5 W 
                   ASOS...................N/A  #
                   DAVIS..................12.0 W [270 deg]
 
# 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....0.09  DEPARTURE.....-0.05
                         ASOS..............0.08 
TOTAL PRECIPITATION FOR THE MONTH..........1.86  DEPARTURE.....-0.17  
                         ASOS..............1.88    
TOTAL PRECIPITATION FOR THE YEAR..........32.85  DEPARTURE.....-2.65
                         ASOS.............32.11    
 
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    25 WNW   
9/2  78/51/65/-1/0/787/100    22 S   
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/+1/0/380/49     31 S
9/7  92/62/77/+12/0/680/88    30 SSW
9/8  93/67/80/+15/0/686/89    31 S    TSTM 
9/9  72/57/65/+1/0.16/000/00  28 NNE  TSTM 
9/10 66/57/62/-2/0.03/000/00  18 NNE
9/11 68/58/63/-1/1.34/000/00  30 WNW  
9/12 73/55/64/+1/0/752/99     35 W   Aero 33 MPH W
9/13 73/52/63/0/0/741/98      23 ESE Aero 18 MPH ESE
9/14 76/56/66/+3/0/587/78     26 SSE
9/15 63/49/56/-6/.../.../..   36 WNW 
 
 
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 16
HIGH 91F IN 1939,1941
LOW 39F IN 1984
PRECIP 5.12 INCHES IN 1933 (Hurricane)
PEAK GUST 59 MPH SSE IN 1999
 
RECORDS FOR SEPTEMBER 17
HIGH 86F IN 1915,1941,1991
LOW 38F IN 1959
PRECIP 2.73 INCHES IN 1933
PEAK GUST 60 MPH WNW IN 1999

TODAY'S REPORT PREPARED By: Andrew Hoell