BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 12, 2008 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HIGH CLOUDS INCREASING BY EARLY AFTERNOON
WITH HIGH TEMPS. RUNNING SEVERAL DEGREES BELOW NORMAL
ALONG WITH LIGHT MOSTLY WESTERLY WINDS
 
A layer of dense high cirrostratus clouds was
spreading across the sky by early this afternoon
after a mostly sunny morning.  While the morning
low of 35F was exactly normal for the date, the
afternoon temperatures in the mid 40's were still
several degrees on the cold just like yesterday but
without the gusty winds.
 
Today's observations:
 
7 A.M.
Weather: Overcast stratocumulus but with breaks as
clear sky surrounds us except to the northeast 
Temperature: 36F, Dew point: 27F, Wind: NW at 5 kts
Sea-level pressure: 30.37 inches Hg, rising
Visibility: 70 miles  
6-hourly minimum temperature: 35F
24-hour rainfall: 0.00
BHO SA 1155 E40 OVC 70 284/36/27/3205/037/
FEW SML CU DSNT E-SE LGE BINOVC/CLR SKY PTCHS
HIER CLDS VSB XCPT OVHD-NE/
8/841 51008 10038 20035 
 
10 A.M.
Weather: Scattered stratocumulus, altocumulus and
thin cirrus 
Temperature: 43F, Dew point: 26F, Wind: W at 6 kts,
Sea-level pressure: 30.40 inches Hg, rising
Visibility: 70 miles
BHO SA 1455 40 SCT 180 SCT 250 –SCT 70 296/43/26/2806/040/
AC/FEW ACSL DSNT S-SW FEW CC/ 8/541 51012
 
1 P.M.
Weather: High scattered dense cirrostratus layer extending
east-southeast thru southwest to west was increasing,
few stratocumulus and altocumulus clouds     
Temperature: 46F, Dew point: 25F, Wind: W at 6 kts,
Sea-level pressure: 30.35 inches Hg, falling
Visibility: 75 miles
6-hour max. temp: 46F
BHO SA 1755 220 SCT 75 279/46/25/2806/035/
FEW SC/AC ALQDS DENS CS LYR INCRSNG 
XTDNG ESE-W/ 8/545 58017 10046 20036 
 
WEATHER SUMMARY FOR TUESDAY, NOVEMBER 11
 
TEMPERATURE (DEGREES F)
MAX.....47    NORMAL.....51
MIN.....31    NORMAL.....36
MEAN....39    NORMAL.....43
 
DEPARTURE FROM 30-YEAR NORMAL..............-4
TOTAL DEPARTURE FOR THE MONTH.............+42 [+3.6 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............26  DEPARTURE.........+4
TOTAL HEATING UNITS FOR THE MONTH...........178  DEPARTURE........-43
TOTAL HEATING UNITS FOR THE SEASON..........720  DEPARTURE........-92
TOTAL HEATING UNITS LAST SEASON TO DATE.....599  DIFFERENCE......+121 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............33  W  AT  3:11 P.M.    
                   AEROVANE.............30  W  AT  2:48 P.M.    
                   ASOS.................32  W  AT  3:11 P.M.    
                   DAVIS................32  W  AT  1:24 P.M.  
FASTEST MILE FOR YESTERDAY..............23  W  AT  2:48 P.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE...........22  W  AT  2:49 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........25  W  AT  2:48 P.M.   
                   AVERAGE............12.3  W  
                   ASOS...............11.2
                   DAVIS..............12.4 W [265 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00    DEPARTURE.......-0.16
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.13    DEPARTURE.......-0.55
                         ASOS..............1.12
TOTAL PRECIPITATION FOR THE YEAR..........46.07    DEPARTURE.......+2.37
                         ASOS.............48.64 #
# Includes erroneous ASOS precipitation data on 2/13/08.
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.....-0.1
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE.....-0.8
TOTAL SNOWFALL FOR THE SEASON...............0.0  DEPARTURE.....-1.0
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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
 
11/1  58/36/47/0/0.00/266/43     22 SW
11/2  43/29/36/-10/0.00/598/97   25 NW
11/3  50/32/41/-5/0.00/000/00    23 S
11/4  65/45/55/+9/0.00/409/67    24 SSW
11/5  65/52/59/+14/0.07/018/03   28 NE 
11/6  55/52/54/+9/0.93/000/00    35 NNE
11/7  57/52/55/+10/0.05/000/00 * 24 N
11/8  59/55/57/+13/0.07/000/00 * 32 SE
11/9  57/45/51/+7/0.01/.../..    35 WSW 
11/10 52/34/43/-1/T/.../..       32 W
11/11 47/31/39/-4/0.00/.../..    33 W
 
11/12 morning low temp. 35F; our normal low is now 35F
 
* corrections to daily rainfall amounts....
7th = 0.05, was 0.04; 8th = 0.07, was 0.08
monthly total unaffected. 
 
NEW DAILY RECORDS FOR NOVEMBER
 
None...
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 12
HIGH 74 IN 1909
LOW 18 IN 1926
PRECIP 3.25 INCHES IN 1947
SNOWFALL 8.1 INCHES IN 1987
PEAK GUST 79e MPH NW IN 1947
 
RECORDS FOR NOVEMBER 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982
 
TODAY'S REPORT PREPARED By: Robert Skilling