BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, OCTOBER 24, 2008 
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED
 
Today's observations:
 
8 A.M. EDT
Weather: Clear, few cirrus distant S-W, thin smoke
layer N-NE
Temperature: 40F, Dew point: 19F, Wind: WSW at 13 kts
Sea-level pressure: 30.52 inches, falling
Visibility: 75 miles
6-hourly minimum temperature: 34F
BHO SA 1155 CLR 75 336/40/19/2413/052/ FEW CI DSNT S-W
THN K LYR N-NE INVSN PRSNT/ 8/001 56001 10037 20034
 
11 A.M. EDT
Weather: Clear, few cirrus SE-NW, dark smoke layer
all quadrants except SE-SW
Temperature: 50F, Dew point: 25F, Wind: SW at 5 kts
Sea-level pressure: 30.50 inches Hg, falling
Visibility: 70 miles
BHO SA 1455 CLR 70 328/50/25/2205/050/ FEW CI SE-NW
DRK K LYR ALQDS XCPT SE-SW/ 8/001 58008
 
2 P.M. EDT
Weather: Scattered cirrus
Temperature: 60F, Dew point: 14F, Wind: SSW at 9 kts
Sea-level pressure: 30.43 inches Hg, falling
Visibility: 75 miles
6-hourly maximum temperature: 61F
BHO SA 1755 250 SCT 75 305/60/14/2009/043/ 8/001 58023
10061 20039
 
WEATHER SUMMARY FOR THURSDAY, OCTOBER 23
 
TEMPERATURE (DEGREES F)
MAX.....45    NORMAL.....58
MIN.....31    NORMAL.....41
MEAN....38    NORMAL.....49
 
DEPARTURE FROM 30-YEAR NORMAL.............-11
TOTAL DEPARTURE FOR THE MONTH..............-8 [-0.5 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............27  DEPARTURE.......+11
TOTAL HEATING UNITS FOR THE MONTH...........286  DEPARTURE........+2
TOTAL HEATING UNITS FOR THE SEASON..........403  DEPARTURE.......-51
TOTAL HEATING UNITS LAST SEASON TO DATE.....233  DIFFERENCE.....+169
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............23  N  AT  5:55 A.M.*  
                   AEROVANE.............21  N  AT  5:40 A.M.*   
                   ASOS.................22 NNE AT  5:55 A.M.  
                   DAVIS................22 NNW
FASTEST MILE FOR YESTERDAY..............14 NNW AT  3:41 A.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE...........15  N  AT  3:43 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........N/A
                   AVERAGE............. 8.2 NNW
                   ASOS.................7.8
                   DAVIS................8.5 NNW [341 deg]
* last of several occurrences
 
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..........0.73   DEPARTURE.......-2.49
                         ASOS..............0.72
TOTAL PRECIPITATION FOR THE YEAR..........43.63   DEPARTURE.......+2.81
                         ASOS.............46.20 #
#  Includes erroneous ASOS precipitation data on 2/13/08.
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 2008 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
10/1  68/58/63/+6/0.49/120/17     38 SW   TSTM #
10/2  62/46/54/-2/0.11/455/65     45 W 
10/3  62/45/54/-2/T/376/54        44 SSW  Aero 43 MPH SSW
10/4  61/40/51/-5/0.00/612/88     32 WSW
10/5  53/45/49/-6/T/000/00        18 WNW
10/6  58/39/49/-6/0.00/303/44     28 WNW
10/7  64/37/51/-4/0.00/687/100    23 WNW
10/8  69/43/56/+2/0.00/581/85     32 S    Aero 30 MPH S
10/9  72/55/64/+10/0.02/510/75    33 WSW 
10/10 69/53/61/+7/0.00/664/98     29 W
10/11 68/49/59/+6/0.00/668/99     20 NNW
10/12 67/47/57/+4/0.00/625/93     21 W
10/13 62/50/56/+4/0.00/308/46     20 NE
10/14 65/50/58/+6/0.00/514/77     30 SSE
10/15 64/52/58/+6/0.00/618/93     21 ENE  
10/16 67/51/59/+8/T/026/04        35 NW
10/17 59/42/51/0/0.00/474/72      26 NW
10/18 51/37/44/-7/0.00/440/67     25 N
10/19 46/36/41/-10/0.00/176/27    36 NNE  Aero 36 MPH NNE
10/20 54/34/44/-6/0.00/631/97     25 N 
10/21 59/43/51/+1/0.01/129/20     20 W
10/22 44/38/41/-9/0.10/000/00     32 NNW
10/23 45/31/38/-11/0.00/520/81    23 N   
 
10/24 morning low temp. 34F; our normal low is now 40F
 
# Thunderstorm gust 
 
NEW DAILY RECORDS FOR OCTOBER
 
None...
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 24
HIGH 79 IN 1963
LOW 22 IN 1969
PRECIP 2.96 INCHES IN 1890
SNOWFALL 1.8 INCHES IN 1960
PEAK GUST 70 MPH SE IN 1959
 
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
 
TODAY'S REPORT PREPARED By: Stephanie Radner