BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 29, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
VERY SUNNY, WARM AND CONTINUED LOW HUMIDITY TODAY
 
Like yesterday, our early morning low temperature was 
in the middle 60's and lower elevations had radiational
cooling overnight with low temperature down into the 
low to middle 50's. By early this afternoon our temp-
erature was already in the mid-80's and still heading
up under full sunshine and light south to southwest 
winds.  Dewpoints were in the mid and upper 50's;  
once again a day like yesterday with low humidity.
 
Our August rainfall continues at only 0.62 inch, far below 
the normal of 4.06 inches.  The month could slide into 
second place in the ranking of driest Augusts. 
Driest Augusts (inches). Also, as it now stands, this 
could be our 15th driest summer and 10th driest July-August. 
driest Augusts 
1) 0.53 in 1981
2) 0.91 in 1984
3) 1.05 in 1910
 
Today's observations:
 
7 A.M.   
Weather: Clear 
Temperature: 69F, Dew point: 51F, Wind: SSW at 09 kts
Sea-level pressure: 30.16 inches Hg, rising
Visibility: 35 miles, thin smoke along horizon SSW and NNE  
6-hour min temp: 64F
24-hour rainfall: 0.00 
BHO SA 1155 CLR 35 212/69/51/2109/016/ 
THN K LYR BLO DSSPTNG SHLW INVSN ALG HRZN SSW AND NNE/ 
53003 10069 20064 
   
10 A.M.   
Weather: Clear, few cumulus forming distant WNW-NW, thin cirrus SE-S  
Temperature: 79F, Dew point: 58F, Wind: S at 08 kts
Wind: variability SSE-SW
Sea-level pressure: 30.15 inches Hg, falling
Visibility: 35 miles, light distant haze   
BHO SA 1455 CLR 35 211/79/58/1908/015/ 
FEW CU FRMG DSNT WNW-NW FEW THN CI DSNT SE-S 
THN K ALF W-NW LGT DSNT HZ ALQDS WND 15V22/
8/101 58001
 
1 P.M.   
Weather: Scattered cumulus  
Temperature: 86F, Dew point: 57F, Wind: S at 08 kts 
Wind: variability ESE-SSW 
Sea-level pressure: 30.10 inches Hg, falling 
Visibility: 35 miles, light haze    
6-hour max. temp: 87 deg. F
BHO SA 1755 55 SCT 35 194/86/57/1808/010/ LGT HZ 
WND 12V21/ 8/100 58017 10087 10069 
 
WEATHER SUMMARY FOR TUESDAY, AUGUST 28
 
TEMPERATURE (DEGREES F)
MAX.....83    NORMAL.....76 
MIN.....64    NORMAL.....59
MEAN....74    NORMAL.....68
DEPARTURE FROM 30-YEAR NORMAL........ +6
TOTAL DEPARTURE FOR THE MONTH........+34  (+1.0 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............21 ESE  AT 3:23 P.M.   
                   AEROVANE...............N/A [malfunction]   
                   ASOS...................N/A  #
                   DAVIS..................21 ESE  AT 3:23 P.M. 
FASTEST MILE FOR YESTERDAY................14 ESE  AT 5:26 P.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............15 ESE  AT 3:23 P.M. 
AVERAGE WIND SPEED AND DIRECTION..........7.6 ESE  
                   ASOS...................N/A  #
                   DAVIS..................7.4 ESE [110 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....0.00  DEPARTURE.....-0.14
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........0.62  DEPARTURE.....-3.02  
                         ASOS..............0.55    
TOTAL PRECIPITATION FOR THE YEAR..........30.98  DEPARTURE.....-2.07
                         ASOS.............30.22    
 
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
 
8/1  84/67/76/+4/0/851/98     20 NNE    
8/2  92/68/80/+8/0/823/95     21 S     
8/3  92/70/81/+9/0/760/88     28 SSW
8/4  89/71/80/+8/0/827/96     29 WSW  
8/5  80/62/71/-1/0/842/98     23 SSE 
8/6  77/61/69/-3/0.05/129/15  36 SSE  Aero 34 MPH SSE TSTM  
8/7  82/67/75/+4/0.12/410/48  15 SSE 
8/8  88/70/79/+8/0.10/349/41  36 S
8/9  75/60/68/-3/0/722/85     32 NW
8/10 63/53/58/-13/0.19/017/02 16 SSW
8/11 83/52/68/-3/0/743/88     21 WNW
8/12 86/64/75/+4/0/665/79     21 SSW
8/13 83/64/74/+3/0.01/260/31  30 NW   TSTM 
8/14 78/58/68/-2/0/812/97     23 NW
8/15 83/59/71/+1/0/651/78     36 SSW  Aero 34 MPH SSW
8/16 87/67/77/+7/0/641/77     33 SSW
8/17 78/62/70/0/0.07/241/29   43 S    Aero 39 MPH S TSTM  
8/18 71/52/62/-8/0.08/761/92  46 WNW  Aero 42 MPH WNW, Davis 46 MPH WNW TSTM  
8/19 74/51/63/-7/0/619/75     25 WNW  
8/20 70/56/63/-6/0/411/50     21 ENE
8/21 68/56/62/-7/0/271/33     23 E  
8/22 70/55/63/-6/0/147/18     23 NE    
8/23 75/59/67/-2/T/024/03     22 SSE   
8/24 88/66/77/+8/0/552/68     30 SSW  
8/25 93/69/81/+13/0/566/70    25 SSE  
8/26 84/68/76/+8/T/169/21     22 S
8/27 79/64/72/+4/0/731/91     25 NNE 
8/28 83/64/74/+6/0/736/92     21 ESE
 
8/29 morning low temp. 64F; normal low now 59F
 
NEW DAILY RECORDS FOR AUGUST 2007: 
 
8/18 - NEW RECORD PEAK GUST FOR OF 46 MPH WNW; 
the previous record was 39 MPH SW in 1991
8/25 - RECORD HIGH TEMPERATURE OF 93F;
ties previous record set in 1947,1948
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 29
HIGH 95F IN 1953
LOW 41F IN 1982
PRECIP 2.88 INCHES IN 1962
PEAK GUST 70e MPH S 1949
 
RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW 1965
 
TODAY'S REPORT PREPARED By: Robert Skilling