BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 7, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
THREE QUARTERS OF AN INCH OF RAINFALL YESTERDAY
NOVEMBER TEMPERATURES RUNNING CLOSE TO NORMAL TO DATE
 
Yesterday's rainfall, which included a downpour bringing 0.44 inch in
a 60-minute period ending just after 11 a.m., totaled 0.75 inch.  This
brings the November total to 1.70 inches or 0.80 inch above normal for 
the month to date.
 
Black ice was observed on the tower roof boards this morning after the
moisture from yesterday's rainfall failed to dry up overnight allowing 
the ice to form even though our low temperature was 33 degrees in the 
instrument shelter. 
 
Temperatures yesterday, including maximum and minimum, were exactly on
the normals for the date. So far this month has not shown any definitive
trend to above or below normal temperatures. The month is averaging just 
a fraction of a degree above normal to date.  
 

Today's observations:
 
7 A.M.   
Weather:  Clear, few distant stratocumulus clouds, SE-S and W-NW 
Temperature: 34F, Dew point: 29F, Wind: SW at 12 kts
Sea-level pressure: 29.89 inches Hg, rising 
Visibility: 50 miles 
6-hour min temp: 33F
24-hour precipitation: 0.75 inch 
BHO SA 1155 CLR 50 123/34/29/2212/989/ FEW SC DSNT SE-S AND DSNT W-NW 
LGT HZ/ 8/500 51018 MANUAL 70075 ASOS 70077 10036 20033
  
10 A.M.   
Weather: Clear, stratocumulus forming distant WSW-N  
Temperature: 43F, Dew point: 31F, Wind: W at 10G21 kts
Wind: Gradually veering and variable WSW-WNW   
Sea-level pressure: 29.95 inches Hg, rising  
Visibility: 65 miles    
BHO SA 1455 CLR 65 141/43/31/2710G21/995/ SC FRMG DSNT WSW-N
WND GRDLY VEERING WND 24V30/ 8/500 51018
  
1 P.M.   
Weather: Scattered stratocumulus clouds  
Temperature: 48F, Dew point: 29F, Wind: W at 16G22 kts
Wind: Variability in direction, SW to WNW 
Sea-level pressure: 29.96 inches Hg, steady 
Visibility: 75 miles  
6-hourly max. temp: 50F  
BHO SA 1755 40 SCT 75 145/48/29/2616G22/996/ WND 23V30/ 
8/500 51004 10050 20034 
   
WEATHER SUMMARY FOR TUESDAY, NOVEMBER 6
 
TEMPERATURE (DEGREES F)
MAX.....53    NORMAL.....53 
MIN.....37    NORMAL.....37
MEAN....45    NORMAL.....45
DEPARTURE FROM 30-YEAR NORMAL........... 0 
TOTAL DEPARTURE FOR THE MONTH...........+5 [+0.6 DEGREES/DAY][corrected]  
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............35 SSE AT 9:48 A.M. 
                   AEROVANE.............35 SSE AT 9:48 A.M.  
                   ASOS.................35 SSE AT 9:49 A.M.   
                   DAVIS................35 SSE AT 7:53 A.M.  
FASTEST MILE FOR YESTERDAY..............25 SE  AT 9:48 A.M. * 
MAXIMUM 2-MINUTE ASOS AVERAGE...........23 SE  AT 9:49 A.M.            
MAXIMUM 2-MINUTE DAVIS AVERAGE..........26 SE  AT 7:47 A.M.          
AVERAGE WIND SPEED AND DIRECTION......14.9 SE  
                   ASOS...............13.8    
                   DAVIS..............15.7 S [170 deg]
* last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.75  DEPARTURE.....+0.60
                         ASOS..............0.77 
TOTAL PRECIPITATION FOR NOVEMBER...........1.70  DEPARTURE.....+0.80 
                         ASOS..............1.71    
TOTAL PRECIPITATION FOR THE YEAR..........37.24  DEPARTURE.....-5.68
                         ASOS.............36.54  
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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
 
11/1  66/42/54/+7/0/050/08     37 S
11/2  50/37/44/-2/0/446/73     29 NE
11/3  46/40/43/-3/0.95/000/00  51 N   Aero 50 MPH NNW  
11/4  54/37/46/0/0/503/82      33 W   Aero 33 MPH W    
11/5  56/40/48/+3/0/483/79     29 SE  Aero 29 MPH SE 
11/6  53/37/45/0/0.75/000/00   35 SSE Aero 35 MPH SSE  
       
11/7  morning low temp. 33F; the normal low is now 37F
 
NEW DAILY RECORDS FOR NOVEMBER 2007:
 
None to date.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 7
HIGH 75 IN 1938
LOW 21 IN 1930
PRECIP 2.02 INCHES IN 1953
SNOWFALL 1.0 IN 1967
PEAK GUST 69e ENE IN 1953
 
RECORDS FOR NOVEMBER 8
HIGH 72 IN 1938
LOW 20 IN 1921
PRECIP 2.24 INCHES IN 1972
SNOWFALL 4.0 IN 1894
PEAK GUST 72e SE IN 1947
 
TODAY'S REPORT PREPARED By: Robert Skilling