BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, NOVEMBER 27, 2011
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HAZY CONDITIONS AND LIGHT FOG AT SUMMIT TODAY KEEP
VISIBILITY DOWN TO 20 MILES TILL EARLY AFTERNOON
 
NOVEMBER CONTINUES TO RANK AMONG THE WARMEST ON RECORD...
 
A nice display of clouds was seen at the summit this morning much like
yesterday as the sun was rising. Visibility has been down to only about
20 miles most of the day due to light distant fog and haze. An inversion
was also present this morning with a defined smoke layer which has not
dissipated. The light fog has lifted throughout the day but hazy
conditions remain continuing to keep visibility down. High level clouds
have built their way in since this morning keeping temperatures cooler
than yesterday. Winds have been out of the south but calm. Above normal
temperatures will continue through the end of the month, assuring us that
this month will finish as one of the warmest in the last 125 years. Now it
is just a matter of where in the rankings this month will finish. As this
month nears an end, the beginning of December is looking more seasonable.
 
BLUE HILL WARMEST NOVEMBER AVERAGE MAXIMUM TEMPERATURE, 1885-2010
1)  55.8F 1975
2)  54.9F 1927
3)  54.8F 2001
4)  54.6F 1931
        1941
        2006
7)  54.5F 1948
        1994
9)  54.0F 1979
10) 53.9F 1953
        1999
The current November average maximum temperature is 56.1F
 
BLUE HILL WARMEST NOVEMBER AVERAGE MINIMUM TEMPERATURE, 1885-2010
1)  40.7F 2006
        2009      
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 November average minimum temperature is 39.5F
 
BLUE HILL WARMEST NOVEMBER CORRECTED MEAN TEMPERATURE, 1885-2010
1)  47.4F 1975
2)  47.1F 2006
3)  46.4F 2048
        1979
        2009
6)  46.0F 2001
7)  45.7F 1953
        1999
9)  45.6F 1931
10) 45.5F 1994
The current November corrected mean temperature is 46.9F
 
Today's observations:
 
7 A.M. 
Weather: Scattered altocumulus/altocumulus lenticularis, scattered lower
dense cirrus distant NNE-SSE, clear overhead, contrails NE-S, inversion
present with patches of ground fog below it, smoke layer below inversion
W-NE, light distant fog all quadrants, steam fog over lake SSE, hazy
Temperature: 44F, Dew point: 42F; Wind: SW at 6 kts
Sea-level pressure: 30.21 inches Hg, rising
Visibility: 20 miles, light distant fog, hazy
6-hour min. temp: 44F
BHO SA 1155 SCT 110 SCT 220 20 231/44/42/2306/021/ CLR OVD FEW AC SSE-SSW
FEW ACSL DSNT ALQDS FEW LWR DNS CI DSNT NNE-SSE CONTRAILS NE-S INVSN PRSNT
ESTMTD TOP 3 HND OVR CTY N PTCHS LGT GF BLO INVSN K LYR BLO INVSN W-NE LGT
DSNT FG ALQDS STEAM FG OVR LK SSE HAZY/ 8/042 53003 10053 20044
 
10 A.M.
Weather: Broken stratus fractus drifting over/below summit N-SSW,
altostratus distant SSW-NNW, few lower dense cirrus NW-N, sun dimly visible,
smoke layer W-NE, light distant fog all quadrants, hazy
Temperature: 49F, Dew Point: 45F; Wind: S at 4 kts,
Sea-level pressure: 30.23 inches Hg, rising
Visibility: 20 miles, light distant fog, hazy,
Visibility: Variable N-SSW 2 1/2 - 10 miles
BHO SA 1455 E3 BKN 90 BKN 220 BKN 20 236/49/45/1804/023/ STFRA DRFTG OVR/BLO
SMT N-SSW AS DSNT SSW-NNW FEW LWR DNS CI NW-N SUN DMLY VSBL K LYR W-NE LGT
DSNT FG ALQDS HAZY VSBY LWR N-SSW 21/2V10/ 8/722 53005
 
1 P.M. 
Weather: Broken dense cirrus, broken thin cirrus, dark smoke layer NW-NNE,
hazy
Temperature: 55F, Dew Point: 48F; Wind: S at 4 kts
Sea-level pressure: 30.18 inches Hg, falling
Visibility: 30 miles, hazy,
Visibility: Higher SSE-SSW 40 miles, lower N-NNE 10 miles
6-hour max. temp: 55F
BHO SA 1755 E200 BKN 250 BKN 30 221/55/48/1704/018/ DRK K LYR NW-NNE HAZY
VSBY HIER SSE-SSW 40 VSBY LWR N-NNE 10/ 8/003 58015 10055 20044
 
 
WEATHER SUMMARY FOR SATURDAY, NOVEMBER 26
 
TEMPERATURE (DEGREES F)
MAX.....62    NORMAL.....45
MIN.....45    NORMAL.....31
MEAN....54    NORMAL.....38
 
DEPARTURE FROM 30-YEAR NORMAL.....................+16
TOTAL DEPARTURE FOR THE MONTH....................+144 [+5.3 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............11   DEPARTURE........-16
TOTAL HEATING UNITS FOR THE MONTH............440   DEPARTURE.......-147
TOTAL HEATING UNITS FOR THE SEASON...........866   DEPARTURE.......-312
TOTAL HEATING UNITS LAST SEASON TO DATE.....1046   DIFFERENCE......-180
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............21 W   AT   7:01 A.M. *
                   AERO...................21 WNW AT  10:04 A.M. *
                   ASOS...................22 W   AT   7:08 A.M.
                   DAVIS..................22 W   AT   6:07 A.M. RMY 22 MPH
THE FASTEST MILE FOR YESTERDAY............18 W   AT   7:09 A.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE.............17 W   AT   7:10 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE............17 W   AT   6:03 A.M. 
AVERAGE WIND SPEED AND DIRECTION.........9.2 SW
                   ASOS..................9.0
                   DAVIS.................8.5 W [260 deg]
* Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE..........-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH  ........3.69  DEPARTURE..........-0.35
                         ASOS..............3.67
TOTAL PRECIPITATION FOR THE YEAR..........57.71  DEPARTURE.........+11.65
                        ASOS..............58.12**
**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.........-2.3
TOTAL SNOWFALL FOR THE SEASON...............8.5  DEPARTURE.........+6.0
 
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/+3/0.16/0.0/006/01   31 WNW AERO 31 MPH WNW RMY 32
11/18 43/31/37/-4/0.00/0.0/576/99   32 W   AERO 33 MPH W   RMY 32
11/19 52/34/43/+2/0.00/0.0/347/60   39 SW  AERO 40 MPH SW  RMY 42
11/20 64/47/56/+16/0.00/0.0/451/78  39 SW  AERO 40 MPH SW  RMY 42
11/21 55/34/45/+5/0.00/0.0/.../..   30 WNW AERO 32 MPH WNW RMY N/A
11/22 46/33/40/0/0.11/0.0/.../..    23 ESE AERO 23 MPH ESE RMY N/A
11/23 46/31/39/0/1.46/0.0/000/00    44 E   AERO 43 MPH E   RMY 43 
11/24 44/28/36/-3/0.00/0.0/.../..   23 N   AERO 25 MPH N   RMY 21
11/25 60/37/49/+10/0.00/0.0/.../..  24 SW  AERO 26 MPH SW  RMY 26
11/26 62/45/54/+16/0.00/0.0/.../..  21 W   AERO 21 MPH WNW RMY 22
 
11/27 morning low temp: 43F; the normal low is now 31F
 
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 27
HIGH 68 IN 1896
LOW 5 IN 1932
PRECIP 1.92 INS IN 1898
SNOWFALL 16.0 INS IN 1898
PEAK GUST 68 NW IN 1997
 
RECORDS FOR NOVEMBER 28
HIGH 70 IN 1990
LOW 10 IN 1901,1930,1936
PRECIP 1.84 INCHES IN 1889
SNOWFALL 3.0 INS IN 1917
PEAK GUST 90 SSW IN 1958
 
TODAY'S REPORT PREPARED BY: George A. Tabeek