BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 26, 2008 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HEAVY RAIN DURING TUESDAY'S STORM
TOTAL RAINFALL 2.21 INCHES FELL IN 17 HOURS
PEAK WIND GUSTS REACHED 44 MPH FROM THE EAST
 
Yesterday's heavy rainstorm included many hours
of moderate rain with some downpours mixed in during
both the morning and mid-afternoon. Two hours had
the maximum amounts of 0.25 inch, one in the late
morning and another at mid-afternoon.  The entire rain
event occurred between 1 a.m. and a little past 5 p.m.
 
The monthly total rainfall of 4.40 inches is now above the
normal for November after running below normal all month. 
Peak wind gusts reached 40 to 44 MPH from the east and
southeast during the morning and the peak hourly average
was 27 MPH from the east during the early morning.   
 
Ponkapoag Pond which had frozen over on 24 November was
partilly thawed with 0.8 ice cover remaining this morning.
 
Today's observations:
 
7 A.M.
Weather: Clear, stratocumulus layer SSE-SSW and dense cirrus
layer NNE-ESE, thin fog, heavy frost, black ice
Temperature: 31F, Dew point: 27F, Wind: S at 12 kts,
Sea-level pressure: 29.88 inches Hg, rising
Visibility: 12 miles, WNW 20 miles
6-hourly minimum temperature: 30F
BHO SA 1155 CLR 12 119/31/27/1812/988/ SC LYR SSE-SSW
DENS CI LYR NNE-ESE THN FG ALQDS VSBY WNW 20/
8/502 53020 ASOS 70172 MANUAL 70161 10034 20030
 
10 A.M.
Weather: Clear, few cumulus fractus forming NE-E, few altocumulus
in all parts of the sky, cirrus distant NE-E  
Temperature: 40F, Dew point: 32F, Wind: S at 10 kts,
Wind: Variability in direction SSE-SSW 
Sea-level pressure: 29.91 inches Hg, rising
Visibility: 20 miles, hazy 
BHO SA 1455 CLR 20 129/40/32/1810/991/ FEW CUFRA FRMG NE-E FEW AC 
ALQDS CI DSNT NE-E HAZY WND 15V21/ 8/131 53010
 
1 P.M.
Weather: Scattered cumulus, moderate cumulus, broken stratocumulus,
broken cirrus
Temperature: 41F, Dew point: 30F, Wind: SSW at 12G21 kts,
Wind: Variability in direction south to west-southwest 
Sea-level pressure: 29.89 inches Hg, rising
Visibility: 45 miles  
6-hourly maximum temp: 44F
BHO SA 1755 38 SCT E50 BKN 250 BKN 45 122/41/30/2012G21/989/
LWR CU/MDT CU ALQDS WND 18V24/ 8/801 55007 10044 20031  
 
WEATHER SUMMARY FOR TUESDAY, NOVEMBER 25
 
TEMPERATURE (DEGREES F)
MAX.....51    NORMAL.....46
MIN.....35    NORMAL.....31
MEAN....43    NORMAL.....39
 
DEPARTURE FROM 30-YEAR NORMAL.............. +4
TOTAL DEPARTURE FOR THE MONTH..............-10 [-0.6 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............22  DEPARTURE.........-5
TOTAL HEATING UNITS FOR THE MONTH...........568  DEPARTURE.........+8
TOTAL HEATING UNITS FOR THE SEASON.........1110  DEPARTURE........-41
TOTAL HEATING UNITS LAST SEASON TO DATE.....965  DIFFERENCE......+145
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............44  E  AT  4:07 A.M.  
                   AEROVANE.............32  E  AT 11:59 P.M.  
                   ASOS.................44  E  AT  4:07 A.M.  
                   DAVIS................43 SE  AT 11:48 A.M.  
FASTEST MILE FOR YESTERDAY..............33 SE  AT 11:48 A.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE...........30  E  AT  3:52 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........33 SE  AT 11:49 A.M.  
                   AVERAGE............17.8 ESE      
                   ASOS...............16.6
                   DAVIS..............17.2 SE [140 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....1.61   DEPARTURE.......+1.46
                         ASOS...............1.72
TOTAL PRECIPITATION FOR THE MONTH...........4.40   DEPARTURE.......+0.51
                         ASOS...............4.55
TOTAL PRECIPITATION FOR THE YEAR...........49.34   DEPARTURE.......+2.43
                         ASOS..............52.07 #
# 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..............TRACE  DEPARTURE.....-2.1
TOTAL SNOWFALL FOR THE SEASON.............TRACE  DEPARTURE.....-2.3
 
 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2008 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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/+7/0.01/462/77       35 WSW 
11/10 52/34/43/-1/T/316/53          32 W
11/11 47/31/39/-4/0.00/428/72       33 W
11/12 46/35/41/-2/0.00/355/60       17 W
11/13 49/36/43/0/0.05/T/000/00      35 ESE SLEET 8 AM
11/14 59/49/54/+12/0.07/0/000/00    22 SE
11/15 67/56/62/+20/0.62/0/000/00    65 SSE Aero 69 MPH SSE
11/16 64/37/51/+9/0.32/0/169/29     53 W   Aero 46 MPH W
11/17 47/31/39/-2/0.00/0/0/501/86   24 SSW
11/18 38/23/31/-10/0.00/0.0/580/100 33 NW
11/19 31/18/25/-16/0.00/0.0/566/98  32 NW
11/20 33/17/25/-15/0.00/0.0/547/95  32 W   Aero 29 MPH W
11/21 32/19/26/-14/0.00/0.0/551/96  36 NW  Aero 33 MPH NW
11/22 26/17/22/-18/0.00/0.0/515/90  47 WNW Aero 47 MPH WNW
11/23 31/18/25/-14/0.00/0.0/.../..  35 W   Aero 33 MPH W
11/24 41/25/33/-6/0.00/0.0/.../..   32 E
11/25 51/35/43/+4/2.21/0.0/000/00   44 E
 
11/26 morning low temp: 30F; our normal low is now 31F
 
NEW DAILY RECORDS FOR NOVEMBER 2008...
 
11/15 PEAK GUST: 65 SSE, PREVIOUS RECORD, 58 NNW in 1962, NW in 1967
11/15 HIGH MIN TEMP: 56F; TIED WITH 1989
11/22 LOW MAX TEMP:  26F; TIED WITH 1972
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.22 INS IN 1888
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964
 
TODAY'S REPORT PREPARED By: Robert Skilling