BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, OCTOBER 21, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Clear
Temperature: 51F, Dew point: 45F, Wind: WSW at 15 kt 
Sea-level pressure: 30.08 inches Hg, rising
Visibility: 50 miles
6-hour min temp: 51F
24-hour precipitation: Trace
BHO SA 1155 CLR 50 186/51/45/2415/008/ 
HAZY/ 8/000 51037 70000 10053 20051
 
10 A.M.   
Weather: Clear
Temperature: 63F, Dew point: 46F, Wind: WSW 11 kt 
Sea-level pressure: 30.12 inches Hg, rising
Visibility: 70 miles  
BHO SA 1455 CLR 70 199/63/46/2511/012/ HAZY SW-NW/ 8/000 51023
 

WEATHER SUMMARY FOR SATURDAY, OCTOBER 20
 
TEMPERATURE (DEGREES F)
MAX.....70    NORMAL.....59 
MIN.....54    NORMAL.....42
MEAN....62    NORMAL.....50
DEPARTURE FROM 30-YEAR NORMAL.........+12 
TOTAL DEPARTURE FOR THE MONTH........+126 [+6.1 DEGREES/DAY]  
 

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............43 W   AT 1:47 A.M.        
                   AEROVANE.............44 W   AT 1:45 A.M.
                   ASOS.................41 WNW AT 1:48 A.M. 
                   DAVIS................43 W   AT 1:48 A.M. 
FASTEST MILE FOR YESTERDAY..............32 W   AT 1:47 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...........31 WNW AT 1:48 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE..........32 WNW AT 1:49 A.M.
AVERAGE WIND SPEED AND DIRECTION......14.0 SSW 
                   ASOS...............13.8 
                   DAVIS..............14.5 SW [223 deg]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.14
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........2.02  DEPARTURE.....-0.78  
                         ASOS..............2.04    
TOTAL PRECIPITATION FOR THE YEAR..........34.90  DEPARTURE.....-5.50
                         ASOS.............34.16  
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
 
10/1  67/49/58/+1/0/592/84     18 S 
10/2  72/50/61/+5/0/323/46     20 SSE
10/3  73/61/67/+11/0/077/11    23 SSE
10/4  84/65/75/+19/0/425/61    21 SSW
10/5  86/61/74/+19/0/618/89    21 SSW 
10/6  83/62/73/+18/0/526/76    23 WSW
10/7  71/52/61/+7/0.01/110/16  29 NNE 
10/8  58/52/55/+1/0.49/000/00  21 S
10/9  59/50/55/+1/0.10/580/85  29 NNW
10/10 57/50/54/0/0.09/000/00   20 ESE
10/11 58/55/57/+4/0.37/000/00  33 ENE TSTM late evening 
10/12 62/42/52/-1/0.18/135/20  42 W   Aero 43 MPH W 
10/13 59/37/48/-4/0/665/99     25 WNW
10/14 59/42/51/-1/0/629/94     32 W 
10/15 62/38/50/-2/0/426/64     29 WNW   
10/16 61/43/52/+1/0/650/98     25 NW 
10/17 68/41/55/+4/0/462/70     20 SW
10/18 75/57/66/+15/0/.../..    21 S
10/19 70/63/67/+16/0.60/0/0     47 SSE Aero 51 MPH SSE
10/20 70/54/62/+12/0.19/.../..    43 W   Aero 44 MPH W
 
NEW DAILY RECORDS FOR OCTOBER 2007:
 
10/4 - RECORD HIGH TEMPERATURE 84F; PREVIOUS 83F IN 1898 and 1959.
     - EQUALED RECORD HIGH MINIMUM TEMPERATURE OF 65F; ALSO IN 1927. 
10/5 - RECORD HIGH TEMPERATURE 86F; PREVIOUS 85F IN 1922
10/6 - EQUALED RECORD HIGH TEMPERATURE 83F; ALSO IN 1990. 
10/19- EQUALED RECORD HIGH MINIMUM TEMPERATURE 63F; PREVIOUS IN 1928.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR OCTOBER 21
HIGH 79 IN 1979
LOW  24 IN 1974
PRECIP 2.39 INCHES IN 1944
SNOWFALL TRACE IN 1895,1907,1940
PEAK GUST 69e MPH S IN 1976
 
RECORDS FOR OCTOBER 22
HIGH 85 IN 1979
LOW 22 IN 1940
PRECIP 1.37 INCHES IN 1898
SNOWFALL TRACE IN 1969
PEAK GUST 67 MPH ESE IN 1988

TODAY'S REPORT PREPARED By: Andrew Hoell