BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, OCTOBER 25, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.   
Weather: Overcast stratocumulus, few lower stratus 
Temperature: 48F, Dew point: 47F, Wind: N at 7 kts 
Sea-level pressure: 30.27 inches Hg, rising 
Visibility: 30 miles, higher NW (60 miles) and E 
6-hour min temp: 48F
6-hour precipitation: 0.01 in.
24-hour precipitation: 0.03 in.
BHO SA 1155 E6 OVC 30 252/48/47/3607/027/ FEW LWR STRA ALQDS 
BRKS DSNT NE-SE AND NW VSBY NW 60 VSBY HIER E WND 31V04/ 
8/5// 53023 MANUAL 6001/ ASOS 60001 MANUAL 70003 ASOS 70002 
10050 20048
 
10 A.M.   
Weather: Overcast stratocumulus, few lower cumulus, light rain  
Temperature: 50F, Dew point: 44F, Wind: NNE at 10 kts
Wind: Variable direction NNW-ENE
Sea-level pressure: 30.34 inches Hg, rising
Visibility: 50 miles, NW 65 miles 
BHO SA 1455 E75 OVC 50RW- 273/50/44/0310/034/ 
FEW LWR CUFRA VSBY NW 65 RW-B35E55 WND 33V07/ 
8/5// 51021 MANUAL 6000/
 
1 P.M. 
Weather: Scattered stratocumulus, broken altocumulus, cirrus
Temperature: 51F, Dew point: 43F, Wind: NE at 10 kts
Wind: Variable direction NW-E  
Sea-level pressure: 30.36 inches Hg, rising
Visibility: 60 miles 
6-hour max. temp. 51F
6-hour precip: trace  
BHO SA 1755 70 SCT E10 BKN 250 BKN 60 280/51/43/0410/036/ 
FEW LWR CUFRA ALQDS WND 32V10/ 8/561 52007 MANUAL 6000/ 
10051 20048
 
WEATHER SUMMARY FOR WEDNESDAY, OCTOBER 24
 
TEMPERATURE (DEGREES F)
MAX.....63    NORMAL.....57 
MIN.....50    NORMAL.....40
MEAN....57    NORMAL.....49
DEPARTURE FROM 30-YEAR NORMAL.........+ 8 
TOTAL DEPARTURE FOR THE MONTH........+182 [+7.4 DEGREES/DAY]  
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............24 NW  AT 12:00 A.M.          
                   AEROVANE.............25 NW  AT 12:00 A.M.   
                   ASOS.................23 NNW AT 12:00 A.M.  
                   DAVIS................UNKNOWN  
FASTEST MILE FOR YESTERDAY..............16 NNW AT  6:02 A.M. *    
MAXIMUM 2-MINUTE ASOS AVERAGE...........17 NW  AT 12:01 A.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE..........UNKNOWN  
AVERAGE WIND SPEED AND DIRECTION......7.2 NNE  
                   ASOS...............7.1 
                   DAVIS..............7.5 NW [325 deg]
* last of several occurrences.
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03  DEPARTURE.....-0.12
                         ASOS..............0.02 
TOTAL PRECIPITATION FOR THE MONTH..........2.15  DEPARTURE.....-1.22  
                         ASOS..............2.16    
TOTAL PRECIPITATION FOR THE YEAR..........35.03  DEPARTURE.....-5.94
                         ASOS.............34.28  
 
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/+4/0/455/69     20 SW
10/18 75/57/66/+15/0/151/23    21 S
10/19 70/63/67/+16/0.60/000/00 47 SSE Aero 51 MPH SSE
10/20 70/54/62/+12/0.19/229/35 43 W   Aero 44 MPH W
10/21 73/51/62/+12/0/643/99    25 SSW 
10/22 80/58/69/+19/0/595/92    29 S 
10/23 74/58/66/+17/0.02/135/21 52 SSW Aero 55 MPH SSW 
10/24 63/50/57/+8/0.10/000/00  24 NW
 
10/25 morning low temp. 48F; normal low is now 40F
 
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. 
10/23 -EQUALED RECORD HIGH MINIMUM TEMPERATURE 58F; ALSO IN 1942
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 25
HIGH 81 IN 1963
LOW 26 IN 1922,1939
PRECIP 2.45 INCHES IN 2005
SNOWFALL 1.2 INCHES IN 1960
PEAK GUST 72 MPH ESE IN 1980
 
RECORDS FOR OCTOBER 26
HIGH 80 IN 1963
LOW 24 IN 1933
PRECIP 1.72 INCHES IN 1894
SNOW 3.0 INCHES IN 1962
WIND 59 MPH SSE IN 1967
 
TODAY'S REPORT PREPARED By: Stephanie Radner