BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JULY 26, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Clear
Temperature: 69F, Dew point: 60F, Wind: WSW at 06 kts
Sea-level pressure: 30.20 inches Hg, rising
Visibility: 15 miles, hazy 
6-hour min temp: 65F     
24-hour rainfall: 0.00 in. 
BHO SA 1155 CLR 15 226/69/60/2406/020/ HAZY/ 51008 10069 20065
 
10 A.M.   
Weather: Clear
Temperature: 84F, Dew point: 63F, Wind: SW at 08 kts
Wind: Variable in direction SSW-W
Sea-level pressure: 30.17 inches Hg, falling
Visibility: 15 miles, hazy  
BHO SA 1455 CLR 15 217/84/63/2308/017/ HAZY WND 20V27/ 58009
 
1 P.M.   
Weather: Scattered cumulus
Temperature: 89F, Dew point: 61F, Wind: SW at 09 kts
Wind: Variable in direction S-W
Sea-level pressure: 30.13 inches Hg, falling
Visibility: 18 miles, hazy    
6-hourly max. temp: 90F    
BHO SA 1755 45 SCT 18 204/89/61/2309/013/ HAZY WND 18V28/ 
8/100 58013 10090 20069
 
WEATHER SUMMARY FOR WEDNESDAY, JULY 25
 
TEMPERATURE (DEGREES F)
MAX.....88    NORMAL.....82 
MIN.....63    NORMAL.....63
MEAN....76    NORMAL.....73
DEPARTURE FROM 30-YEAR NORMAL........+3
TOTAL DEPARTURE FOR THE MONTH.......-14  (-0.8 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............21 WSW AT 4:13 P.M.       
                   AEROVANE...............18  SW AT 8:05 P.M.       
                   ASOS...................N/A  #
                   DAVIS..................23 SSW AT 1:50 P.M.           
FASTEST MILE FOR YESTERDAY................14 WSW AT 3:33 A.M. *           
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............17 SSW AT 4:38 P.M.            
AVERAGE WIND SPEED AND DIRECTION..........9.7 WSW  
                   ASOS...................N/A  #
                   DAVIS..................10.3 SW [233 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.....-0.12
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........1.47  DEPARTURE.....-1.56 
                         ASOS..............1.36    
TOTAL PRECIPITATION FOR THE YEAR..........28.45  DEPARTURE.....-0.24
                   ASOS FOR YEAR..........27.77    
 
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/ 28 W      
7/2  73/50/62/-8/0/841/92/    29 WNW 
7/3  75/53/64/-6/0/839/92/    23 NW 
7/4  78/58/68/-2/0.09/465/51/ 45 SSE 
7/5  80/61/71/ 0/0.25/383/42/ 38 SSE TSTM   
7/6  83/62/73/+2/0.01/482/53/ 46 WNW TSTM  
7/7  81/60/71/0/0/509/56/     32 WSW   
7/8  90/62/76/+5/0.41/563/62/ 36 NW Aero 33 MPH TSTM 
7/9  86/61/74/+3/0.20/354/39  27 NNE TSTM
7/10 80/62/71/0/0/680/75      27 S 
7/11 84/70/77/+5/T/371/41     32 S
7/12 81/64/73/+1/0.01/813/90  27 WNW
7/13 84/62/73/+1/0/695/77     36 WSW
7/14 82/62/72/0/T/765/85      33 SSE
7/15 87/65/76/+4/T/638/71     44 S  Aero 45 MPH S, Davis 48 MPH S     
7/16 84/65/75/+3/0/449/50     18 WNW 
7/17 85/65/75/+3/0/591/66     18 WNW
7/18 71/66/69/-3/0.21/000/00  23 SE   
7/19 83/65/74/+2/0.20/205/23  31 S   
7/20 82/61/72/0/0/330/37      29 WSW
7/21 77/58/68/-4/0/436/49     23 WNW 
7/22 77/61/69/-3/0/826/93     24 ENE   
7/23 64/60/62/-10/0.07/000/00 32 NNE
7/24 82/62/72/-1/0/796/90     25 SW
7/25 88/63/76/+3/0/.../..     21 WSW  Aero 18 MPH SW
 
7/26 morning low temp. 65 deg; normal low now 63 deg. 
     max. temp. thru 2 p.m. EDT is 85 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 26
HIGH 97F IN 1963
LOW 47F IN 1920
PRE 2.05 INS IN 1899
WIND 74e MPH NNW IN 1940
 
RECORDS FOR JULY 27
HIGH 95F IN 1949, 1963
LOW 50F IN 1920, 2001
PRE 4.01 INS IN 1979
WIND 47 MPH ENE IN 1984
 
TODAY'S REPORT PREPARED By: Stephanie Radner