BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, OCTOBER 1, 2008
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED
 
FALL OPEN HOUSE AT THE OBSERVATORY ON SATURDAY, OCT 4...
We will be having our annual fall open house at the
Observatory next Saturday, October 4 from 10 AM to 4 PM.
There will be free guided tours of the facility and a
"Inconvenient Truth" slide show at 11:30 AM and 1 PM.
 
NINTH ANNUAL SOUTHERN NEW ENGLAND WEATHER CONFERENCE TO
BE HELD SATURDAY, OCT 25...
Registration is now open for the Southern New England
Weather Conference being held at the Clay Center in
Brookline on October 25th.  To see the agenda or to                               
register go to www.sneweatherconf.org.
 
SEPTEMBER STATS
Mean temp: 63.4 [+1.3]
HDD = 102 [-36]
CDD = 60  [+53]
Precip: 7.44 [+3.31]
Sunshine: 12262 mins. or 55%
Wind direction: Prevailing S 13%
Av. wind speed: 11.0 MPH (corrected)
 
Rainfall of 7.44 for September ranks 17th wettest
and wettest since 2004.
 
MID-DAY THUNDERSTORM TODAY.....
A thunderstorm during the noon hour had a downpour
which left close to 0.20 inch rainfall in 5 minutes
ending at 1 p.m.  
 
Today's observations:
 
8 A.M. EDT
Weather: Overcast stratus and thin fog
Temperature: 59F, Dew point: 59F,  Wind: SE at 8 kts
Sea-level pressure: 29.74 inches Hg, falling
Visibility: 4 miles
6-hourly minimum temperature: 58F
24-hourly rainfall: trace
BHO SA 1155 E3 OVC 4F 071/59/59/1408/974/
56006 10059 20058
 
11 A.M. EDT
Weather: Scattered stratocumulus, overcast stratocumulus,
dark WSW-W, sun occasionally dimly visible, hazy
Temperature: 64F, Dew point: 59F, Wind: SE at 8 kts
Sea-level pressure: 29.71 inches Hg, falling
Visibility: 20 miles, SW-NW 15 miles
3-hourly precip: 0.00
BHO SA 1455 11 SCT E55 OVC 20 060/64/59/1408/971/ DRK WSW-W
VSBY SW-NW 15 WND 12V18/ 8/5// 56011
 
2 P.M. EDT
Weather: Broken stratus, overcast stratocumulus, towering
cumulus east to southeast, small break in overcast, thin
fog, thunder ended moved northeast past hour
Temperature: 60F, Dew point: 60F, Wind: WSW at 7 kts,
Wind: gust to 33 kts from SW at 11:56 a.m. EST
Sea-level pressure: 29.66 inches Hg, rising
Visibility: 4 miles. briefly 1/16 past hour
6-hourly max. temp. 68F
6-hourly precip: 0.36 in.  
BHO SA 1755 3 SCT E8 BKN 30 OVC 4F 043/60/60/2507/966/
STRA DRFTG OVR AND BLO SMT TCU E-SE BINOVC E-SE TE15
MOVD NE RE45 VSBY BRFLY 1/16 PST HR PK WND 2333/1656/
8/6// 55017 ASOS 60037 MANUAL 6036/ 10068 20058 
 
WEATHER SUMMARY FOR TUESDAY, SEPTEMBER 30
 
TEMPERATURE (DEGREES F)
MAX.....64    NORMAL.....66
MIN.....57    NORMAL.....48
MEAN....61    NORMAL.....57
 
DEPARTURE FROM 30-YEAR NORMAL.............+4
TOTAL DEPARTURE FOR THE MONTH............+45 (+1.3 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............21 SE   AT 10:44 P.M. 
                   AEROVANE.............20 SE   AT 10:44 P.M. *
                   ASOS.................18 SE   AT 10:45 P.M.   
                   DAVIS................21 ESE  AT 10:13 P.M. 
FASTEST MILE FOR YESTERDAY..............16 SE   AT 11:22 P.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE...........14 SE   AT 11:24 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........16 ESE  AT 10:25 P.M. 
                   AVERAGE............ 8.0 ENE
                   ASOS................8.1
                   DAVIS...............7.5 ENE [070 deg]
* last of several occurrences....
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....trace  DEPARTURE.......-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR SEPTEMBER..........7.44   DEPARTURE.......+3.31
                         ASOS..............7.48
TOTAL PRECIPITATION FOR THE YEAR..........42.90   DEPARTURE.......+5.30
                         ASOS.............45.48 #
#  Includes erroneous ASOS precipitation data on 2/13/08.
 
PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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
 
9/1  81/57/69/+2/0.00/787/100    29 NW
9/2  74/60/67/+1/0.00/604/77     27 N 
9/3  75/57/66/0/0.00/766/98      22 N
9/4  85/62/74/+8/0.00/748/96     23 SSW
9/5  86/67/77/+12/0.00/575/74    32 SSE
9/6  82/68/75/+10/1.88/039/05    44 SE   Aero 39 MPH SE *
9/7  78/61/70/+5/0.31/655/85     43 NW   Aero 43 MPH NW *
9/8  78/58/68/+3/0.00/753/98     23 WSW
9/9  73/60/67/+3/0.32/054/07     43 SW   Aero 46 MPH SW TSTM #
9/10 68/52/60/-4/0.00/748/98     25 WNW   
9/11 69/48/59/-5/0.00/616/81     23 S
9/12 66/54/60/-3/0.22/008/01     33 S 
9/13 74/62/68/+5/T/113/15        21 S
9/14 70/64/67/+4/0.40/000/00     35 S   
9/15 79/60/70/+8/0.00/697/93     45 WSW  Aero 45 MPH WSW **
9/16 64/54/59/-3/0.00/045/06     21 NNW
9/17 72/53/63/+1/0.00/646/87     20 S 
9/18 65/49/57/-4/0.00/599/81     31 NNE  Aero 28 MPH NNE
9/19 57/47/52/-9/0.00/685/93     28 NE
9/20 64/46/55/-6/0.00/624/85     16 SSW
9/21 77/49/63/+3/0.00/687/94     25 NW
9/22 59/50/55/-5/0.00/022/03     24 NNE
9/23 62/47/55/-5/0.00/668/92     20 ENE
9/24 65/47/56/-3/0.00/658/91     16 E   
9/25 65/50/58/-1/0.00/295/41     24 NE
9/26 64/57/61/+2/2.37/000/00     37 NE   Aero 35 MPH NE
9/27 67/62/65/+7/0.96/000/00     27 NE
9/28 69/65/67/+9/0.79/000/00     14 WNW
9/29 68/60/64/+6/0.19/128/18     22 NW
9/30 64/57/61/+4/T/042/06        21 SE
 
10/1 morning low temp: 57F; our normal low is now 48F
 
* Tropical Storm Hanna
# Thunderstorm gust 
** Ike remnants
 
NEW DAILY RECORDS FOR SEPTEMBER
 
None...
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 1
HIGH 85F IN 1927
LOW 30F IN 1992
PRECIP 1.44 INCHES IN 1984
PEAK GUST 68e MPH SSE IN 1977
 
RECORDS FOR OCTOBER 2
HIGH 85F IN 1968
LOW 29F IN 1899
PRECIP 1.75 INCHES IN 1984
PEAK GUST 52e MPH S IN 1952, 52 NNW IN 1984
 
TODAY'S REPORT PREPARED By: Robert Skilling