BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, SEPTEMBER 6, 2007    
ALL TIMES ARE IN EASTERN STANDARD TIME
 
MODERATE DROUGHT NOW OCCURRING HERE 
LONG DRY SPELL CONTINUES--0.01 INCH PAST 18 DAYS
RAINFALL PAST 90 DAYS--5.02 INCHES 43% OF NORMAL 
 
We are now in a moderate drought after being abnormally 
dry all summer. The drought monitor map shows that most 
of Rhode Island and southeastern Massachusetts is in a 
moderate drought area. Areas 10 to 20 miles to our east
and southeast now have only 25 to 33% of the normal 
rainfall over the past 90 days while that percentage is
a little higher here at 43%.  Rainfall here since 
June 5 is 5.02 inches.
 
Today's observations:
 
7 A.M.   
Weather: Scattered altocumulus, thin scattered cirrus   
Temperature: 59F, Dew point: 54F, Wind: SSE at 10 kts
Sea-level pressure: 30.35 inches Hg, rising
Visibility: 30 miles, SW-NW 20, NE 40 SE 35 
6-hour min temp: 55F 
24-hour rainfall: 0.00 
BHO SA 1155 70 SCT 250 SCT 300 –SCT 30 276/59/54/1610/035/ 
AC LYR XTDNG SSW-W-N SLWLY ADVCNG VSBY SW-NW 20 NE 40 SE 35 
LGT HZ ALQDS/ 8/051 53018 10059 20055  
 
10 A.M.   
Weather: Overcast stratocumulus/altocumulus/ hazy aloft 
Temperature: 68F, Dew point: 51F, Wind: S at 13G20 kts  
Wind: variability SE-SSW  
Sea-level pressure: 30.35 inches Hg, falling
Visibility: 50 miles  
BHO SA 1455 E60 BKN 80 OVC 50 279/68/51/1713G20/035/ 
FEW SML CU FRMG DSNT W THN SPTS IOVC OVHD HAZY ALF 
WND 13V21/ 8/87/ 50003
 
1 P.M.   
Weather: Scattered altocumulus & haze layer aloft       
Temperature: 74F, Dew point: 52F, Wind: S at 15G22 kts  
Wind: Variability SE-SSW
Sea-level pressure: 30.31 inches Hg, falling
Visibility: 55 miles  
6-hour max. temp: 74F    
BHO SA 1755 65 SCT 55 264/74/52/1715G22/031/ ACSL ALQDS 
HZ LYR ALF/ 8/040 58015 10074 20059 
 
WEATHER SUMMARY FOR WEDNESDAY, SEPTEMBER 5
 
TEMPERATURE (DEGREES F)
MAX.....74    NORMAL.....74 
MIN.....53    NORMAL.....57
MEAN....64    NORMAL.....65
DEPARTURE FROM 30-YEAR NORMAL.........-1
TOTAL DEPARTURE FOR THE MONTH........ +7  [+1.2 deg/day] 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............21 ESE AT 9:47 P.M. *   
                   AEROVANE...............18 NW  AT 9:07 A.M.     
                   ASOS...................N/A  #
                   DAVIS..................21 ESE AT 9:41 P.M. 
FASTEST MILE FOR YESTERDAY............... 15 ESE AT 9:44 P.M.        
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............16 ESE AT 9:42 P.M.  
AVERAGE WIND SPEED AND DIRECTION......... 10.0 NW  
                   ASOS...................N/A  #
                   DAVIS..................10.3 N [350 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.....-0.13
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........0.00  DEPARTURE.....-0.65  
                         ASOS..............0.00    
TOTAL PRECIPITATION FOR THE YEAR..........30.99  DEPARTURE.....-3.13
                         ASOS.............30.23    
 
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
9/1  79/57/68/+1/0/790/100      
9/2  78/51/65/-1/0/787/100      
9/3  85/57/71/+5/0/760/97     31 SSW AERO 28 MPH SSW 
9/4  76/61/69/+3/0/.../..     28 NW  AERO 26 MPH NW
9/5  74/53/64/-1/0/.../..     21 ESE
 
9/6  morning low temp. of 55F; normal low now 56F
 
NEW DAILY RECORDS FOR SEPTEMBER 2007: 
 
None to date 
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR SEPTEMBER 6
HIGH 92F IN 1900
LOW 39F IN 1888
PRECIP 3.19 INCHES IN 1890
PEAK GUST 78e MPH SE IN 1979 (TROPICAL STORM DAVID)
 
RECORDS FOR SEPTEMBER 7
HIGH 91F IN 1945
LOW 40F IN 1888
PRECIP 2.95 INCHES IN 1891
PEAK GUST 58e MPH W IN 1941
 
TODAY'S REPORT PREPARED By: Robert Skilling