BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 25, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME

RECORD HIGH TEMPERTURE TODAY WITH 93 BY MID-AFTERNOON 
TYING RECORD FOR DATE...HEAT INDEX OVER 100 DEGREES...
AUGUST ONE OF THE DRIEST ON RECORD SO FAR...
From a morning low of 69 degrees and a foggy start early
today, the temperature has climbed to 93 through 3 PM EDT.
This ties the record high temperature for the date of 93
previously set in 1947 and 1948.  With the dew point 
reaching 73 degrees, the heat index has peaked at 102
early this afternoon.  The sky and horizon are very hazy
with visibility remaining under 10 miles all day.  Other
than the haze, only a few cirrus are filtering the strong
sunshine today.  The monthly precipitation so far of 0.63
inch ranks very high among the driest Augusts on record:

Driest Augusts (inches)

1) 0.53 in 1981
2) 0.91 in 1984
3) 1.05 in 1910


Today's observations:

7 A.M.   
Weather: Sky partly obscured with fog
Temperature: 71F, Dew point: 69F, Wind: S at 11 kts 
Sea-level pressure: 29.90 inches Hg, steady
Visibility: 2 miles in fog  
6-hour min temp: 69F
BHO SA 1155 –X E4 OVC 2F 126/71/69/1911/990/ F5 SUN OCNLY 
DMLY VSBL/ 8/6// 50000 10071 20069

10 A.M.   
Weather: Scattered cirrocumulus floccus and thin scattered
cirrus fibratus
Temperature: 82F, Dew point: 72F, Wind: SSW at 12 kts  
Sea-level pressure: 29.89 inches Hg, falling
Visibility: 7 miles, hazy   
BHO SA 1455 180 SCT 200 –SCT 7 123/82/72/2012/989/ HAZY/ 
8/001 58003

1 P.M.  
Weather: Scattered cirrus floccus and thin scattered cirrus 
fibratus
Temperature: 91F, Dew point: 73F, Wind: SSW at 11 kts
Sea-level pressure: 29.84 inches Hg, falling
Visibility: 9 miles, hazy 
6-hour max. temp. 93F 
BHO SA 1755 150 SCT 250 –SCT 9 106/91/73/2011/984/ HAZY/ 
8/002 58017 10093 20071 
  

WEATHER SUMMARY FOR FRIDAY, AUGUST 24
 
TEMPERATURE (DEGREES F)
MAX.....88    NORMAL.....77 
MIN.....66    NORMAL.....60
MEAN....77    NORMAL.....69
DEPARTURE FROM 30-YEAR NORMAL.........+8
TOTAL DEPARTURE FOR THE MONTH.........+3  (-0.1 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............30 SSE AT 12:56 P.M.  
                   AEROVANE...............27 SSE AT 12:56 P.M.
                   ASOS...................N/A  #
                   DAVIS..................32 SSW AT 11:59 A.M. 
FASTEST MILE FOR YESTERDAY................24 SSW AT 12:54 P.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............26 SSW AT 12:57 P.M.
AVERAGE WIND SPEED AND DIRECTION.........15.6 S 
                   ASOS...................N/A  #
                   DAVIS..................9.0 SSW [193 deg.]  *

* Erroneous reading. Kite string caught in Davis anemometer since
8/19 was removed on 8/25. 
# 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.....-2.47  
                         ASOS..............0.55    
TOTAL PRECIPITATION FOR THE YEAR..........30.98  DEPARTURE.....-1.52
                         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/.../..     23 NE   Aero 20 MPH NE
8/23 75/59/67/-2/T/.../..     22 SSE  Aero 20 MPH SSE
8/24 88/66/77/+8/0/.../..     30 SSW  Aero 27 MPH SSW

8/25 morning low temp. of 69 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
8/25 - RECORD HIGH TEMPERATURE pending

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 25
HIGH 93F IN 1947, 1948
LOW 41F IN 1940
PRECIP 1.72 INCHES IN 1958
PEAK GUST 60e MPH SSW 1941

RECORDS FOR AUGUST 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW 1947

TODAY'S REPORT PREPARED By: Mike Iacono

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