BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 30, 2011
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TWO NEW TEMPERATURES RECORDS SET NOVEMBER 29....
 
The maximum temperature of 66F (65.5) occurring at
12:40 P.M. establishes a new record high maximum
for the date; the previous record was 64F in 1963
and more recently in 1990.
The minimum temperature of 52F occurring at 5:03 A.M.
establishes a new record high minimum; the previous
record was 49F in 1957 and 2005. 
 
In addition, on November 28, we set a new record
high minimum temperature of 51F; the previous record
was 50F in 1990.   
 
INCREDIBLE, RECORD WARMTH CONTINUES;
NOVEMBER 2011 ABOUT TO FINISH WARMEST ON RECORD 
DOWNPOURS EARLY THIS BRING HALF INCH RAIN ONE HOUR
TOTAL OF ONE INCH OF RAINFALL IN UNDER 5 HOURS
SSE-S WINDS GUST TO NEAR 50 MPH 1 to 2 A.M.
 
Late November has been incredibly  warm which included four
consecutive days where high temperatures reached the 60's
on 5 out of the last 6 days of the month. The maximum of
of 66F yesterday was warmest maximum of the past 5-60-degree
days and set a new record for November 29.   
 
Yesterday's average temperature was an incredible 22 degrees above
normal!  Monday was 21 degrees above normal so we will have tallied
up 14 days with daily double-digit above normal departures assuming today
continues with a double-digit departure. Through 29 days the month
is averaging 47.8F (corrected to 24 hours) or 0.4 degree warmer
than the previous warmest November at 47.4 in 1975.   
 
Downpours of rain starting just after midnight early this morning
brought close to one inch of rainfall in only about 4 hours. 
One half inch fell in one 60-minute period.  The month which
has been consistently drier than turned around for the first
time with this latest rainfall event and will wind up being
just slightly (0.03 inch) above normal in precipitation. 
 
A maximum temperature for today of 63F occurred between
1 and 2 A.M.
 
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 57.0F
 
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 40.4F
 
BLUE HILL WARMEST NOVEMBER CORRECTED MEAN TEMPERATURE, 1885-2010
1)  47.4F 1975
2)  47.1F 2006
3)  46.4F 1948
          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 47.8F
thru 29 days....
 
Today's observations:
 
7 A.M. 
Weather: Broken stratus, broken stratocumulus, few stratocumulus
lenticularis, broken cirrus 
Temperature: 50F, Dew point: 48F; Wind: SSW at 16 kts
Sea-level pressure: 29.64 inches Hg, rising
Visibility: 30 miles, distant thin fog/haze
6-hour min. temp: 50F
6-hour rainfall: 0.76 inch
24-hour precip: 0.98 inch 
BHO SA 1155 E12 BKN 55 BKN 220 BKN 30 038/50/48/2016/964/
FEW SCSL/ 8/601 55003 ASOS 60076 MANUAL 60076 ASOS 70098
MANUAL 70098 10063 20050
 
10 A.M.
Weather: Clear, cumulus fractus, cumulus forming vicinity
of station and cumulus/moderate cumulus distant SW-NW-NNE,
altocumulus, altocumulus lenticularis, few altocumulus
castellanus NE-S, dense cirrus and dense cirrus layer distant
NE-SE 
Temperature: 51F, Dew Point: 39F; Wind: SW at 13G24 kts,
Wind: Peak wind 30 kts from SSW @ 9:17 A.M.,
Wind: Direction variable S-W
Sea-level pressure: 29.65 inches Hg, falling slightly
Visibility: 45 miles, distant haze 
BHO SA 1455 CLR 45 041/51/39/2313G24/965/
CUFRA/CU FRMG ALQDS VCTY STN AND CU/MDT CU DSNT SW-N
AC/ACSL/FEW ACC DSNT NE-S DNS CI AND DNS CI LYR DSNT NE-SE
DSNT HZ PK WND 2129/17/ WND 19V26/ 8/282 50003
 
1 P.M. 
Weather: Scattered cumulus, stratocumulus cumulogenitus,
few moderate cumulus tops 
Temperature: 54F, Dew Point: 35F; Wind: SW at 17G23 kts,
Wind: Peak wind gust 27 kts SW at 12:44 P.M.
Wind: Direction variable S-W
Sea-level pressure: 29.61 inches Hg, falling
Visibility: 55 miles, distant haze
6-hour max. temp: 55F
BHO SA 1755 40 SCT 55 026/54/35/2217G23/961/ CU FEW MDT TOPS
DSNT HZ PK WND 2327/44/ WND 19V26/ 8/400 56015 10055 20048
 
WEATHER SUMMARY FOR TUESDAY, NOVEMBER 29
 
TEMPERATURE (DEGREES F)
MAX.....66    NORMAL.....45
MIN.....52    NORMAL.....30
MEAN....59    NORMAL.....37
 
DEPARTURE FROM 30-YEAR NORMAL.....................+22
TOTAL DEPARTURE FOR THE MONTH....................+199 [+6.7 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..............6   DEPARTURE........-22
TOTAL HEATING UNITS FOR THE MONTH............468   DEPARTURE.......-202
TOTAL HEATING UNITS FOR THE SEASON...........894   DEPARTURE.......-367
TOTAL HEATING UNITS LAST SEASON TO DATE.....1137   DIFFERENCE......-243
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............39 SSE AT 11:37 P.M.
                   AERO..................39 SSE AT 11:37 P.M. 
                   ASOS..................36 SSE AT 11:37 P.M.
                   DAVIS.................35 SE  AT 11:36 P.M. RMY N/A
THE FASTEST MILE FOR YESTERDAY...........26 SSE AT 11:38 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............23 SSE AT 11:38 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........25 SSE AT 11:38 P.M.
AVERAGE WIND SPEED AND DIRECTION.......15.6 SSE
                   ASOS................14.5
                   DAVIS...............14.2 SSE [160 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.98  DEPARTURE..........+0.83
                         ASOS..............0.98
TOTAL PRECIPITATION FOR THE MONTH  ........4.67  DEPARTURE..........+0.18
                         ASOS..............4.64
TOTAL PRECIPITATION FOR THE YEAR..........58.69  DEPARTURE.........+12.18
                        ASOS..............59.09**
**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.........-2.6
TOTAL SNOWFALL FOR THE SEASON...............8.5  DEPARTURE.........+5.7
 
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/+3/0.16/0.0/006/01   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/+5/0.00/0.0/305/53   30 WNW AERO 32 MPH WNW RMY N/A
11/22 46/33/40/0/0.11/0.0/356/62    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/-3/0.00/0.0/547/96   23 N   AERO 25 MPH N   RMY 21
11/25 60/37/49/+10/0.00/0.0/523/92  24 SW  AERO 26 MPH SW  RMY 26
11/26 62/45/54/+16/0.00/0.0/459/81  21 W   AERO 21 MPH WNW RMY 22
11/27 57/43/50/+12/0.00/0.0/186/33  32 SSW AERO 33 MPH SSW RMY 35
11/28 65/51/58/+21/0.00/0.0/.../..  33 SW  AERO 36 MPH SW  RMY 35
11/29 66/52/59/+22/0.01/0.0/006/01  39 SSE AERO 39 MPH SSE RMY N/A
 
morning low temp: 50F; the normal low is now 29F
 
DAILY RECORDS FOR NOVEMBER 2011
11/14 - TIED DAILY RECORD HIGH MINIMUM TEMP OF 52F;
ties the record of 52F set in 1951 and 1961.
11/28 - NEW DAILY RECORD HIGH MINIMUM TEMP OF 51F;
surpasses the previous record of 50F set in 1990.
11/29 - NEW DAILY RECORD HIGH MAXIMUM TEMP OF 66F;
surpasses the previous record of 64F set in 1963 and 1990.
11/29 - NEW DAILY RECORD HIGH MINIMUM TEMP OF 52F;
surpasses 49F in 1957 and 2005.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 30
HIGH 67 IN 2006
LOW 7 IN 1887, 1929
PRECIP 2.42 INCHES IN 1944
SNOWFALL 10.2 INS IN 1945
PEAK GUST 90 SSW IN 1963
 
RECORDS FOR DECEMBER 1
HIGH 70 IN 2001
LOW 3 IN 1887
PRECIP 1.46 INS. IN 1917
SNOW 2.0 INS. IN 1902
PEAK GUST 72 MPH NW IN 1964
 
TODAY'S REPORT PREPARED BY: Robert Skilling