BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 20, 2011
ALL TIMES ARE IN EASTERN STANDARD TIME
 
ABOVE AVERAGE TEMPERATURES RETURN AS THIS YEAR'S
NOVEMBER IS BECOMING ONE FOR THE RECORD BOOKS
 
Above average temperatures have returned beginning yesterday as
this warm November continues to surprise many. Plenty of people were out
hiking and biking today as temperatures have risen above 60F. The maximum
temperature recorded so far here at the summit is 64F. Sky conditions
have been mostly clear, with a stratus deck that passed on through right
around 10:00 EST. Cirrus clouds are now present here at the summit. Winds
today have been very gusty out of the SSW, with a peak gust of 39 mph
thus far.
 
For tonight, clouds are expected to return, helping to maintain an above
normal overnight minimum temperature. Tomorrow, expect mostly sunny skies
with temperatures in the mid 40s.
 
WARMEST MEAN NOVEMBER MAX TEMPS ON RECORD FOR BHO:
1)  55.8F 1975
2)  54.9F 1927
3)  54.8F 2001
4)  54.6F 2006,1941,1931
7)  54.5F 1994,1948
9)  54.0F 1979
10) 53.9F 1999,1953
 
The current average maximum temperature for November is 56.9F
 
WARMEST MEAN NOVEMBER MIN TEMPS ON RECORD FOR BHO:
1)  40.7F 2009,2006      
3)  40.2F 1948       
4)  40.1F 1975       
5)  39.3F 1979
6)  38.4F 1931
7)  38.0F 1953
8)  37.9F 1963
9)  37.8F 2001
10) 37.6F 1999
     
The current average minimum temperature for November is 40.6F
 
WARMEST NOVEMBERS ON RECORD FOR BHO:
1)  47.7F 2006
2)  47.4F 1975
3)  46.8F 2009
4)  46.4F 1948,1979
6)  46.3F 2001
7)  45.7F 1999,1953
9)  45.6F 1931
10) 45.8F 1999,1994
 
The current average temperature for November is 47.8F
 
 
Today's observations:
 
7 A.M. 
Weather: Clear, few altocumulus standing lenticularis distant all
quadrants, few altocumulus NE-SE, contrail S and ENE, hazy
Temperature: 49F, Dew point: 44F; Wind: SSW at 21G24 kts
Sea-level pressure: 30.09 inches Hg, falling, then steady
Visibility: 35 miles, hazy
24-hour precip: 0.00 inch
6-hour min. temp: 49F
BHO SA 1155 CLR 35 190/49/44/2021G24/009/ FEW ACSL DSNT ALQDS FEW AC
NE-SE CONTRAIL S AND ENE HAZY/ 8/040 56014 10050 20049
 
10 A.M.
Weather: Broken altocumulus, broken altostratus, few altocumulus/
altocumulus standing lenticularis distant all quadrants, lone
altocumulus castellanus E, crepuscular rays SE-SSW, hazy
Temperature: 55F, Dew Point: 44F; Wind: SSW at 19G25 kts,
Wind: Peak wind 29 kts from the SSW at 9:30 AM EST
Sea-level pressure: 30.06 inches Hg, falling
Visibility: 40 miles, hazy
BHO SA 1455 E80 BKN 90 BKN 40 180/55/44/2119G25/006/ FEW AC/ACSL DSNT
ALQDS LONE ACC E CREPUSCULAR RAYS SE-SSW HAZY PK WND 2129/30/ 8/070
58010
 
1 P.M. 
Weather: Scattered cirrus spissatus, thin broken cirrus fibratus,
contrail overhead, hazy
Temperature: 64F, Dew Point: 46F; Wind: SW at 15G24 kts,
Wind: Peak wind 27 kts from the SW at 12:18 PM EST
Sea-level pressure: 30.01 inches Hg, falling
Visibility: 40 miles, hazy
6-hour max. temp: 64F
BHO SA 1755 E200 SCT 250 –BKN 40 161/64/46/2215G24/001/ CONTRAIL OVD
HAZY PK WND 2227/18/ 8/003 58019 10064 20049
 
WEATHER SUMMARY FOR SATURDAY, NOVEMBER 19
 
TEMPERATURE (DEGREES F)
MAX.....52    NORMAL.....48
MIN.....34    NORMAL.....33
MEAN....43    NORMAL.....41
 
DEPARTURE FROM 30-YEAR NORMAL.....................+2
TOTAL DEPARTURE FOR THE MONTH....................+100 [+5.1 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............22   DEPARTURE.........-2
TOTAL HEATING UNITS FOR THE MONTH............304   DEPARTURE.......-102
TOTAL HEATING UNITS FOR THE SEASON...........730   DEPARTURE.......-267
TOTAL HEATING UNITS LAST SEASON TO DATE......869   DIFFERENCE......-139
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............39 SW  AT  9:58 A.M.
                   AERO...................40 SW  AT  9:58 A.M.
                   ASOS...................40 SW  AT  9:58 A.M.
                   DAVIS..................40 SW  AT  9:58 A.M.
THE FASTEST MILE FOR YESTERDAY............28 SSW AT 10:50 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE.............28 SSW AT 10:50 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE............27 SSW AT 10:40 P.M.
AVERAGE WIND SPEED AND DIRECTION........20.8 SSW
                   ASOS.................20.3
                   DAVIS................19.5 SSW [210 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  ........2.12  DEPARTURE..........-0.84
                         ASOS..............2.05
TOTAL PRECIPITATION FOR THE YEAR..........56.14  DEPARTURE.........+11.16
                        ASOS..............56.50**
**ASOS data is in error due to system failure on 1/12-13/11
 
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.........-1.6
TOTAL SNOWFALL FOR THE SEASON...............8.5  DEPARTURE.........+6.7
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2011 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
RMY:  R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
11/1  50/38/44/-3/0.00/0.0/286/46   25 ENE AERO 24 MPH ENE RMY 24
11/2  54/34/44/-2/0.00/0.0/619/100  17 S   AERO 16 MPH S   RMY N/A
11/3  60/40/50/+4/0.00/0.0/437/71   27 WSW AERO 30 MPH WSW RMY 28
11/4  49/33/41/-5/0.00/0.0/343/56   33 NW  AERO 35 MPH NNW RMY 36
11/5  47/29/38/-7/0.00/0.0/556/91   18 NW  AERO 21 MPH NNW RMY 21
11/6  56/35/46/+1/0.00/0.0/603/99   24 SSW AERO 24 MPH SSW RMY 26
11/7  62/39/51/+6/0.00/0.0/600/99   23 WSW AERO 24 MPH SW  RMY 25
11/8  68/49/59/+15/0.00/0.0/580/96  20 W   AERO 21 MPH W   RMY N/A
11/9  68/50/59/+15/0.00/0.0/584/97  22 S   AERO 23 MPH S   RMY 23
11/10 60/53/57/+13/1.12/0.0/000/00  22 WNW AERO 22 MPH WNW RMY N/A
11/11 55/37/46/+3/T/0.0/358/60      41 W   AERO 44 MPH W   RMY 45
11/12 52/34/43/0/0.00/0.0/524/88    35 SSW AERO 38 MPH SSW RMY 38
11/13 62/43/53/+10/0.00/0.0/243/41  36 S   AERO 37 MPH S   RMY 38
11/14 67/52/60/+18/T/0.0/372/63     33 SSW AERO 35 MPH SSW RMY N/A
11/15 66/55/61/+19/T/0.0/053/09     37 SSW AERO 38 MPH SSW RMY 38
11/16 58/52/55/+13/0.84/0.0/000/00  18 S   AERO 21 MPH S   RMY 21
11/17 53/34/44/+3/0.16/0.0/.../..   31 WNW AERO 31 MPH WNW RMY 32
11/18 43/31/37/-4/0.00/0.0/.../..   32 W   AERO 33 MPH W   RMY 32
11/19 52/34/43/+2/0.00/0.0/.../..   39 SW  AERO 40 MPH SW  RMY 42
 
11/20 morning low temp: 47F; the normal low is now 33F
 
DAILY RECORDS FOR NOVEMBER 2011
None so far...
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 20
HIGH 72 IN 1953
LOW 10 IN 1894
PRECIP 2.78 INS IN 1988
SNOWFALL 3.0 INS IN 1897
PEAK GUST 73e S IN 1950
 
RECORDS FOR NOVEMBER 21
HIGH 69 IN 1931
LOW 10 IN 1888
PRECIP 2.60 INCHES IN 1950
SNOWFALL 4.0 INS IN 1929
PEAK GUST 69 NW IN 1989
 
TODAY'S REPORT PREPARED BY: George A. Tabeek