BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 22, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.
Weather: Clear with a few stratocumulus
Temperature: 38F, Dew point: 35F, Wind: NNW at 10 kt
Sea-level pressure: 30.27 inches Hg, rising
Visibility: 20 miles
6-hour minimum temp: 38F
24-hour precipitation: 0.00
BHO SA 1155 CLR 20 250/38/35/3310/027/
FEW SC E/ 8/400 53023 10042 20038
 
10 A.M.
Weather: Scattered stratocumulus stratiformis with
a few stratocumulus lenticularis
Temperature: 44F, Dew point: 39F, Wind: NNE at 14G20
Sea-level pressure: 30.35 inches Hg, rising
Visibility: 30 miles
BHO SA 1455 20 SCT 30 278/44/39/0214G20/035/
SCSL S-N WND VEERING/ 8/500 51028
 
1 P.M.  
Weather: Overcast stratocumulus with breaks
Temperature: 46F, Dew point: 39F, Wind: NE at 12 kt
Sea-level pressure: 30.39 inches Hg, steady
Visibility: 25 miles
6-hour max. temp: 47F
BHO SA 1755 22 OVC 25 280/46/39/0412/039/
FEW BINOVC ALQDS/ 8/5// 53002 10047 20038
 
 
WEATHER SUMMARY FOR SATURDAY, NOVEMBER 21
 
TEMPERATURE (DEGREES F)
MAX.....55     NORMAL.....47
MIN.....41     NORMAL.....33
MEAN....48     NORMAL.....40
 
DEPARTURE FROM 30-YEAR AVERAGE.............+8
TOTAL DEPARTURE FOR THE MONTH.............+99 [+4.5 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............17    DEPARTURE........-8
TOTAL HEATING UNITS FOR THE MONTH...........356    DEPARTURE......-100
TOTAL HEATING UNITS FOR THE SEASON..........977    DEPARTURE.......-70
TOTAL HEATING UNITS LAST SEASON TO DATE.....973    DIFFERENCE.......+4
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............25 SW   AT  12:17 A.M. *
                   AEROVANE..............24 SW   AT  12:08 A.M.
                   ASOS..................24 WSW  AT  12:17 A.M.
                   DAVIS.................27 SW   AT  12:08 A.M.
FASTEST MILE FOR YESTERDAY...............21 SW   AT  2:52 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............17 WSW  AT  2:51 A.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE...........18 SW   AT  2:50 A.M.      
AVERAGE WIND SPEED AND DIRECTION.......11.9 W
                   ASOS................10.8
                   DAVIS...............11.9 W [266 DEG]
* Last of several occurrences.
 
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..........2.77   DEPARTURE....-0.51
                         ASOS..............2.84
TOTAL PRECIPITATION FOR THE YEAR..........47.88   DEPARTURE....+2.58
                         ASOS.............49.15
                 
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.....-1.8
TOTAL SNOWFALL FOR THE SEASON...............3.0  DEPARTURE.....+1.0
                                               
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2009 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
11/1  58/44/51/+4/0.05/167/27   22 WNW  
11/2  49/42/46/0/T/099/16       29 NE
11/3  57/36/47/+1/0/474/77      32 W    AERO 32 MPH W    
11/4  49/34/42/-4/0/514/84      24 W
11/5  46/36/41/-4/0.01/006/01   21 N
11/6  47/31/39/-6/0/419/69      38 WNW  AERO 38 MPH WNW
11/7  49/29/39/-6/0/575/95      33 S
11/8  66/42/54/+10/0/549/91     31 SSW
11/9  68/49/59/+15/0/486/81     35 S    AERO 35 MPH S
11/10 62/50/56/+12/0/000/00     23 SW 
11/11 50/43/47/+4/0/113/19      31 NNE
11/12 49/41/45/+2/0/125/21      34 NE   AERO 31 MPH NNE
11/13 49/44/47/+4/0/000/00      39 NNE  AERO 37 MPH NNE
11/14 59/49/54/+12/2.08/000/00  39 NE   AERO 38 MPH NE
11/15 60/52/56/+14/0.06/012/02  18 W
11/16 56/43/50/+8/0/527/90      30 NW   AERO 31 MPH NW
11/17 47/35/41/0/0/576/99       28 WNW
11/18 49/34/42/+1/0/.../..      15 SSW
11/19 59/41/50/+9/0/.../..      30 SE
11/20 65/44/55/+15/0.57/.../..  40 W    AERO 41 MPH W
11/21 55/41/48/+8/0/.../..      25 SW 
 
NEW DAILY RECORD FOR NOVEMBER 2009
11/14: NEW RECORD DAILY RAINFALL 2.08 INCHES;
      surpasses previous 1.87 inches in 1972.  
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 22
HIGH 70 IN 1931
LOW 12 IN 1987
PRECIP 1.78 INS IN 2005
SNOWFALL 9.0 INS IN 1971
PEAK GUST 70e SE IN 1945
 
RECORDS FOR NOVEMBER 23
HIGH 73 IN 1931
LOW 9 IN 1888
PRECIP 2.33 INS IN 2006
SNOWFALL 5.5 INS IN 1989
PEAK GUST 64e S IN 1953
 
TODAY'S REPORT PREPARED BY: Andrew Hoell