BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 22, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
COOL TEMPERATURES TODAY FOR A 5TH STRAIGHT DAY AND
AUGUST AVERAGE SLIPS SLIGHTLY BELOW NORMAL
 
Considerable middle and high cloudiness fills the sky today with 
numerous small breaks and continued northeast winds allowing
only a slow temperature rise to the upper 60's to around 70 degrees 
similar to during the past two days.   Temperatures have averaged
7 degrees below normal over the past four days and the August 
average has now slipped slightly below normal.
 
Early morning low temperatures have been unusually cool and under 
50 degrees in the lowlands surrounding the Blue Hills. Norwood Airport reported
39 degrees on Sunday morning, 43 degrees on Monday and 42 degrees the past
two mornings. 
 
7 A.M.   
Weather: Overcast with many breaks, altocumulus, statocumulus and 
stratus along horizons, distant thin fog except SE 
Temperature: 58F, Dew point: 55F, Wind: NNE at 08 kts 
Wind: Variable N-NE 
Sea-level pressure: 30.25 inches Hg, rising
Visibility: 15 miles, 30 SE
thin smoke layer along horizon S-NW  
6-hour min temp: 55F
BHO SA 1155 E85 BKN 120 OVC 15 245/58/55/0308/025/ SC/STRA ALQDS MSTLY DSNT 
NMRS SML BINOVC ALQDS LGE BINOVC N-ESE FEW HIER CI CLDS VSB 
THN K LYR ALG HRZN S-NW DSNT THN F XCPT SE VSBY SE 30 WND 35V05/
8/571 53011 10058 20055
 
10 A.M.   
Weather: Thin broken middle and high clouds with stratocumuls clouds
mostly distant SW-NW-NNE   
Temperature: 64F, Dew point: 52F, Wind: E at 10 kts  
Wind: Variability N-ENE
Sea-level pressure: 30.27 inches Hg, steady
Visibility: 60 miles, 70 NW   
BHO SA 1455 90 SCT 130 –BKN 220 –BKN 250 –BKN 60 251/64/52/0410/027/
SC MSTLY DSNT SW-NW-NNE FEW PTCHS DENSE CI NNE-NE VSBY NW 70 WND 35V07 
GST TO 19 KTS PST HR/ 8/572 51006
 
1 P.M.  
Weather: Overcast altocumulus with breaks few distant small cumulus    
Temperature: 68F, Dew point: 53F, Wind: NE at 07 kts
Wind: Variability N-E 
Sea-level pressure: 30.27 inches Hg, steady
Visibility: 60 miles 
6-hour max. temp. 69F 
BHO SA 1755 E70 BKN 120 OVC 60 251/68/53/0507/027/ FEW SML CU DSNT WNW-N 
AND DSNT E-SE SML BINOVC HIER CLDS VSB WND 36V10/ 
8/171 50000 10069 20058 
  
WEATHER SUMMARY FOR TUESDAY, AUGUST 21
 
TEMPERATURE (DEGREES F)
MAX.....68    NORMAL.....78 
MIN.....56    NORMAL.....60
MEAN....62    NORMAL.....69
DEPARTURE FROM 30-YEAR NORMAL.........-7
TOTAL DEPARTURE FOR THE MONTH........+ 3  (-0.1 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............23 E   AT 11:20 A.M.  
                   AEROVANE...............19 E   AT 11:20 A.M.  
                   ASOS...................N/A  #
                   DAVIS..................21 E   AT 11:19 A.M.  
FASTEST MILE FOR YESTERDAY................14 E   AT 12:11 P.M. *     
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............14 E   AT 11:10 A.M. 
AVERAGE WIND SPEED AND DIRECTION..........8.5 NE 
                   ASOS...................N/A  #
                   DAVIS..................N/A
* 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.....-0.13
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........0.62  DEPARTURE.....-2.08  
                         ASOS..............0.55    
TOTAL PRECIPITATION FOR THE YEAR..........30.98  DEPARTURE.....-1.13 
                         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 morning low temp. of 55 deg.F; normal low now 60 deg. F
 
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.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 22
HIGH 90F IN 1939
LOW 42F IN 1894
PRECIP 2.28 INCHES IN 1935
PEAK GUST 44 MPH SSW 1987
 
RECORDS FOR AUGUST 23
HIGH 88F IN 1918, 1947, 1949, 1996
LOW 45F IN 1923
PRECIP 1.37 INCHES IN 1955
PEAK GUST 60e MPH NW 1940
 
TODAY'S REPORT PREPARED By: Robert Skilling