BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JULY 7, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME

MOSTLY SUNNY WEATHER TODAY...
The cool start to July is beginning to turn around with
a high of 83 on Friday, which is 3 degrees warmer than
average.  The high today has reaced the average of 81
through early afternoon. The July temperature departure 
is still about 4 degrees cooler than average. The dew point 
is decreasing today into the middle 50s.  

Today's observations:
 
7 A.M.   
Weather: Scattered altocumulus, broken cirrostratus and
overcast cirrus 
Temperature: 64F, Dew point: 58F, Wind: W at 8 kts 
Sea-level pressure: 29.87 inches Hg, rising
Visibility: 30 miles
6-hour min temp: 60F    
24-hour precip: 0.01 
BHO SA 1155 150 SCT E200 BKN 250 OVC 30 116/64/58/2708/987/ 
THN SPTS IOVC DSNT N-SSW SUN DMLY VSBL HAZY WND LGT/ 8/078 
53010 70001 10064 20060

10 A.M. 
Weather: Scattered altocumulus and thin overcast cirrus
Temperature: 75F, Dew point: 58F, Wind: WSW at 9 kts
Sea-level pressure: 29.86 inches Hg, falling 
Visibility: 40 miles     
BHO SA 1455 150 SCT 250 –OVC 40 113/75/58/2409/986/ FEW CU 
DSNT NW-NNW HAZY/ 8/171 50003

1 P.M. 
Weather: Scattered cumulus and thin broken cirrus
Temperature: 80F, Dew point: 56F, Wind: WSW at 10 kts
Sea-level pressure: 29.81 inches Hg, falling   
Visibility: 35 miles 
6-hour max temp: 80F
BHO SA 1755 40 SCT 250 –BKN 35 096/80/56/2510/981/ FEW MDT 
CU HAZY WND 22V28/ 8/101 58017 10080 20064  


WEATHER SUMMARY FOR FRIDAY, JULY 6
 
TEMPERATURE (DEGREES F)
MAX.....83    NORMAL.....80 
MIN.....62    NORMAL.....61
MEAN....73    NORMAL.....71
DEPARTURE FROM 30-YEAR NORMAL........+2
TOTAL DEPARTURE FOR THE MONTH.......-23  (-4.0 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............46 WNW AT  3:14 P.M.     
                   AEROVANE...............46 WNW AT  3:22 P.M.   
                   ASOS...................N/A  #
                   DAVIS..................46   W AT  3:21 P.M.        
FASTEST MILE FOR YESTERDAY................36 WNW AT  3:23 P.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............36 WNW AT  3:25 P.M.          
AVERAGE WIND SPEED AND DIRECTION........10.4   W 
                   ASOS...................N/A  #
                   DAVIS.................9.6 WSW [254 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....0.01  DEPARTURE.....-0.11
                         ASOS..............0.00  
TOTAL PRECIPITATION FOR JULY...............0.37  DEPARTURE.....-0.37 
                         ASOS..............0.33    
TOTAL PRECIPITATION FOR THE YEAR..........27.35  DEPARTURE.....+0.94 
                   ASOS FOR YEAR..........26.74    
 
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
 
7/1  70/52/61/-9/0.02/649/71      
7/2  73/50/62/-8/0/841/92
7/3  75/53/64/-6/0/839/92
7/4  78/58/68/-2/0.09/465/51
7/5  80/61/71/ 0/0.24/383/42
7/6  83/62/73/+2/0.01/.../..

7/7  morning low temp. 60 deg; normal low 61 deg. 

  
NEW DAILY RECORDS FOR JULY 2007:  

None to date

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JULY 7
HIGH 97F IN 1908,1993
LOW 48F IN 1902
PRECIP 2.11 INCHES IN 1966
PEAK GUST 55 MPH NW IN 1989

RECORDS FOR JULY 8
HIGH 95F IN 1981
LOW 50F IN 1919
PRECIP 1.74 INCHES IN 1916
PEAK GUST 46e SSW IN 1941

TODAY'S REPORT PREPARED By: Mike Iacono
 
If you do not wish to receive this Daily Discussion and 
Climate Summary from the Blue Hill Observatory, please 
send an email to sitemaster@bluehill.org.