BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 18, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Overcast cirrus
Temperature: 31F, Dew point: 20F, Wind: NW at 11 kt
Sea-level pressure: 30.33 inches Hg, rising
Visibility: 80 miles
6-hour min temp: 29F
BHO SA 1155 200 OVC 80 270/31/20/3211/033/ 
CLRNG LINE NW-NE/ 8/004 53020 10032 20029

10 A.M.   
Weather: Clear
Temperature: 39F, Dew point: 19F, Wind: WNW at 9 kt 
Sea-level pressure: 30.39 inches Hg, rising 
Visibility: 80 miles
BHO SA 1455 CLR 80 293/39/19/3109/039/ 
FEW THN CI S-SW FEW SC NE/ 8/401 51023
 

WEATHER SUMMARY FOR SATURDAY, NOVEMBER 17
 
TEMPERATURE (DEGREES F)
MAX.....40    NORMAL.....49 
MIN.....28    NORMAL.....34
MEAN....34    NORMAL.....41
DEPARTURE FROM 30-YEAR NORMAL...........-7 
TOTAL DEPARTURE FOR THE MONTH..........-29 [-1.9 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............31  DEPARTURE.......+7
TOTAL HEATING UNITS FOR THE MONTH...........386  DEPARTURE......+28 
TOTAL HEATING UNITS FOR THE SEASON..........732  DEPARTURE.....-217
TOTAL HEATING UNITS LAST SEASON TO DATE.....776  DIFFERENCE.....-44
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............37 W   AT 12:36 P.M.   
                   AEROVANE.............36 W   AT 12:37 P.M.   
                   ASOS.................36 W   AT 12:36 P.M.   
                   DAVIS................36 WSW AT 10:46 A.M.   
FASTEST MILE FOR YESTERDAY..............29 W   AT 12:35 P.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE...........26 W   AT 12:36 P.M.   
MAXIMUM 2-MINUTE DAVIS AVERAGE..........29 WSW AT 12:37 P.M.   
AVERAGE WIND SPEED AND DIRECTION......15.7 WSW  
                   ASOS...............15.3 
                   DAVIS..............16.0 WSW [256 deg]    
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE....-0.16
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........2.91  DEPARTURE....+0.27 
                         ASOS..............2.89  
TOTAL PRECIPITATION FOR THE YEAR..........38.45  DEPARTURE....-6.21
                         ASOS.............37.72  
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.....-0.1
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE.....-1.4 
TOTAL SNOWFALL FOR THE SEASON...............0.0  DEPARTURE.....-1.6
 
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
11/6  53/37/45/0/0.75/000/00   35 SSE Aero 35 MPH SSE  
11/7  50/32/41/-4/0/551/91     30 W 
11/8  43/28/36/-8/0/494/82     22 W
11/9  44/32/38/-6/N/A/331/55   21 NNE
11/10 39/28/34/-10/N/A/383/64  32 N
11/11 42/24/33/-10/0/590/99    23 WNW
11/12 42/27/35/-8/0.02/024/04  25 SSE
11/13 55/42/49/+6/0.33/308/52  28 S
11/14 58/41/50/+8/0/.../..     37 S
11/15 64/40/52/+10/../.../..   44 SSE Aero 46 MPH SSE
11/16 44/30/37/-5/../.../..    51 W   Aero 54 MPH W
11/17 40/28/34/-7/../.../..    37 W
 
NEW DAILY RECORDS FOR NOVEMBER 2007: NONE
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 18
HIGH 72 IN 1963
LOW 10 IN 1936
PRECIP 1.80 INCHES IN 1929
SNOWFALL 6.3 INCHES IN 1980
PEAK GUST 60 SW IN 1987
 
RECORDS FOR NOVEMBER 19
HIGH 72 IN 1941
LOW 10 IN 1936
PRECIP 1.92 INCHES IN 1926
SNOWFALL 11.0 INCHES IN 1986
PEAK GUST 59e E IN 1945
 
TODAY'S REPORT PREPARED By: Andrew Hoell