BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, OCTOBER 21, 2005
ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted]
Today's observations:
7 A.M. EST
Weather: Clear with a few cirrus
Temperature: 42F, Dew point: 36F, Wind: WSW at 10 kt
Sea-level pressure: 30.07 inches Hg, rising
Visibility: 55 miles
BHO SA 1155 CLR 55 184/42/36/2810/007/ FEW CI E-W PTCHY GF ALQDS THN K LYR ALNG
HRZN NW-NE/ 8/001 51006 10042 20039
10 A.M. EST
Weather: Broken cirrus
Temperature: 52F, Dew point: 36F, Wind: W at 10 kt
Sea-level pressure: 30.06 inches Hg, falling
Visibility: 60 miles
BHO SA 1455 200 SCT 220 -BKN 60 181/52/36/2710/006/ FEW SC FRMG ALQDS CLR DSNT N-NE
K LYR ALNG HRZN W-E/ 8/501 58003
WEATHER SUMMARY FOR THURSDAY, OCTOBER 20
TEMPERATURE (DEGREES F)
MAX.....54 NORMAL.....59 ASOS.....54 AT 1:44 P.M.
MIN.....41 NORMAL.....42 ASOS.....41 AT 11:47 P.M.
MEAN....48 NORMAL.....50
DEPARTURE FROM 30-YEAR NORMAL.......-2
TOTAL DEPARTURE FOR THE MONTH......+86 (+4.1 DEGREES/DAY)
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........17 DEPARTURE.....+2
TOTAL HEATING UNITS FOR THE MONTH.........161 DEPARTURE....-72
TOTAL HEATING UNITS FOR THE SEASON........233 DEPARTURE...-173
TOTAL HEATING UNITS LAST SEASON TO DATE...329 DIFFERENCE...-96
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.........38 W AT 12:49 A.M.
AEROVANE..........40 W AT 12:50 A.M.
ASOS..............36 W AT 12:54 A.M.
DAVIS.............35 W
FASTEST MILE FOR YESTERDAY...........29 W AT 12:54 A.M. (CORR.)
MAXIMUM 2-MINUTE ASOS AVERAGE........25 W AT 12:55 A.M.
AVERAGE WIND SPEED AND DIRECTION...13.8 W
ASOS............13.1
*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.........10.38 DEPARTURE....+7.58
ASOS.............10.51
TOTAL PRECIPITATION FOR THE YEAR..........53.28 DEPARTURE...+13.03
ASOS.............52.18*
*EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28.
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 2005......CALENDAR DAY DATA
DATA REPORTED:
DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
10/1 70/49/60/+3/0/690/98 21 MPH S
10/2 75/52/64/+8/0/681/97 23 MPH SSW
10/3 73/56/65/+9/0/656/94 15 MPH S
10/4 74/55/65/+9/T/382/55 17 MPH S
10/5 78/56/67/+12/0/471/68 17 MPH S
10/6 77/64/71/+16/T/366/53 25 MPH S
10/7 78/65/72/+17/0.03/158/23 31 MPH S Aero 34 MPH S
10/8 71/49/60/+6/1.32/000/00 45 MPH S Aero 50 MPH S
10/9 52/47/50/-4/1.33/000/00 50 MPH NNE Aero 48 MPH NNE
10/10 53/50/52/-2/0.19/000/00 25 MPH NNE
10/11 54/50/52/-1/0.28/000/00 42 MPH NNE Aero 40 MPH NE
10/12 53/49/51/-2/0.22/000/00 47 MPH NE Aero 45 MPH NE
10/13 54/52/53/+1/.../000/00 40 MPH NE
10/14 56/53/55/+3/.../000/00 37 MPH NE Aero 35 MPH NE
10/15 58/49/54/+2/.../000/00 48 MPH NE Aero 47 MPH NE
10/16 58/48/53/+2/0/331/50 55 MPH WSW Aero 57 MPH W
10/17 60/44/52/+1/0/.../.. 47 MPH W Aero 49 MPH W
10/18 64/43/54/+3/0.03/.../.. 42 MPH W Aero 42 MPH W
10/19 64/46/55/+4/0/.../.. 35 MPH W Aero 36 MPH S
10/20 54/41/48/-2/0/.../.. 38 MPH W Aero 40 MPH W
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR OCTOBER 21
HIGH 79F IN 1979
LOW 24F 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 85F IN 1979
LOW 22F IN 1940
PRECIP 1.37 INCHES IN 1898
SNOWFALL TRACE IN 1969
PEAK GUST 67 MPH ESE IN 1988
TODAY'S REPORT BY: Andrew Hoell