BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 22, 2012 THANKSGIVING DAY
ALL TIMES ARE IN EASTERN STANDARD TIME
EARLY MORNING FOG WITH DENSE PATCHES BELOW INVERSION
BEAUTIFUL FAIR, SUNNY AND DRY THANKSGIVING DAY WEATHER
Early morning for limited the visibility to an average
of 5 miles at 8 A.M. There were dense patches of ground
fog below the inversion below the summit.
The rainfall deficit for the month has reached 1.66
inches; we have received less than half of the normal
precipitation for the month to date. The rainfall
deficit for the year is now in excess of 12 inches.
Today's observations:
7 A.M.
Weather: Scattered stratocumulus, stratocumulus distant in all
quadrants except NE, thin fog, except dense patches of shallow
ground fog all quadrants, heavy dew all surfaces
Temperature: 38F; Dew Point: 38F; Wind: NNE at 9 kts.
Sea-level pressure: 30.27 ins. Hg, steady then rising
Visibility: 5 miles, except 8 miles SW, 9 miles N, thin fog
6-hour min. temp: 37F
BHO SA 1155 28 SCT 5F 249/38/38/0209/027/ SC LYRS MSTLY DSNT ALQDS
XCPT NE VSBY SW 8 N 9 PTCHS DNS SHLW GF ALQDS BLO INVSN ALQDS HVY DEW
ALL SFCS/ 8/500 53006 10040 20037
10 A.M.
Weather: Clear, few stratocumulus NW-N, few cumulus and stratocumulus
distant ESE-SE
Temperature: 47F; Dew Point: 40F; Wind: ENE at 5 kts,
Wind: Light
Sea-level pressure: 30.28 ins. Hg, rising then falling slightly
Visibility: 12 miles, smoke layer along and above the horizon
WSW-N-E, hazy
BHO SA 1455 CLR 12 253/47/40/0605/028/ FEW CU/SC/SCSL DSNT NW-N
AND CU/SC DSNT ESE-SE K LYR ALG/ABV HRZN WSW-N-E HAZY WND LGT/
8/800 50004
WEATHER SUMMARY FOR WEDNESDAY, NOVEMBER 21
TEMPERATURE (DEGREES F)
MAX.....49 NORMAL.....48
MIN.....35 NORMAL.....32
MEAN....42 NORMAL.....40
DEPARTURE FROM 30-YEAR NORMAL.....................+2
TOTAL DEPARTURE FOR THE MONTH....................-27 [-1.5 DEGREES/DAY]
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............23 DEPARTURE........-2
TOTAL HEATING UNITS FOR THE MONTH...........484 DEPARTURE.......+27
TOTAL HEATING UNITS FOR THE SEASON..........892 DEPARTURE......-128
TOTAL HEATING UNITS LAST SEASON TO DATE.....759 DIFFERENCE.....+133
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............21 NE AT 1:11 P.M. *
AERO...................17 NE AT 12:43 P.M.
ASOS...................20 NE AT 12:13 P.M.
DAVIS..................18 NE AT 12:42 P.M. RMY 18
THE FASTEST MILE FOR YESTERDAY............13 NE AT 1:09 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE.............14 NE AT 1:12 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE............13 NNE AT 1:12 P.M.
AVERAGE WIND SPEED AND DIRECTION.........9.1 N
ASOS..................9.3
DAVIS.................8.7 N [011 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..........1.49 DEPARTURE..........-1.82
ASOS..............1.52
TOTAL PRECIPITATION FOR THE YEAR..........34.69 DEPARTURE.........-12.39
ASOS.............34.70
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M.........0.0 DEPARTURE..........-0.1
TOTAL SNOWFALL FOR THE MONTH...............4.0 DEPARTURE..........+3.0
TOTAL SNOWFALL FOR THE SEASON..............4.0 DEPARTURE..........+2.7
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2012 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY: 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 56/42/49/+3/0.00/371/60 28 SW AERO 28 MPH SW RMY 27
11/2 51/41/46/0/0.02/000/00 24 WNW AERO 22 MPH WNW RMY 22
11/3 52/37/45/-1/0.00/319/52 29 NW AERO N/A RMY 28
11/4 52/34/43/-2/0.00/587/96 27 NW AERO 25 MPH NW RMY 26
11/5 45/28/37/-8/0.00/292/48 25 NW AERO 25 MPH NW RMY 25
11/6 40/25/33/-12/0.00/600/99 22 ENE AERO 20 MPH ENE RMY N/A
11/7 42/29/36/-9/0.78/3.5/000/00 48 NNE AERO 52 MPH NNE RMY 51
11/8 36/29/33/-11/0.26/0.5/000/00 43 N AERO 50 MPH N RMY 44
11/9 51/34/43/-1/0.00/0.0/569/95 33 NW AERO 35 MPH NW RMY 32
11/10 53/36/45/+1/0.00/0.0/561/94 25 W AERO 23 MPH W RMY 23
11/11 62/40/51/+8/0.00/0.0/357/60 28 SSW AERO 27 MPH SSW RMY 28
11/12 66/50/58/+15/0.00/0.0/385/65 33 SSW AERO 33 MPH S RMY N/A
11/13 63/37/50/+7/0.43/0.0/000/00 45 S AERO 45 MPH S RMY N/A
11/14 44/33/39/-3/0.00/0.0/559/95 27 NNE AERO 23 MPH N RMY 24
11/15 39/32/36/-6/0.00/0.0/082/14 23 N AERO 21 MPH N RMY 25
11/16 45/31/38/-4/0.00/0.0/216/37 18 NNW AERO 17 MPH NNW RMY 19
11/17 47/32/40/-1/0/00/0/0/553/95 20 N AERO 20 MPH N RMY N/A
11/18 46/30/38/-3/0.00/0.0/487/84 22 ENE AERO 21 MPH ENE RMY 20
11/19 47/30/39/-2/0.00/0.0/451/78 20 NNE AERO 16 MPH NNE RMY N/A
11/20 48/32/40/0/0.00/0.0/.../.. 18 ENE AERO 15 MPH ENE RMY 17
11/21 49/35/42/+2/0.00/0.0/.../.. 21 NE AERO 17 MPH ENE RMY 18
11/22 morning low temp: 37F; the normal low is now 32F
DAILY RECORDS FOR NOVEMBER 2012
11/7 - NEW DAILY RECORD MAXIMUM SNOWFALL OF 3.5 INCHES;
surpasses the previous record of 1.0 inch in 1967
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: Robert Skilling/Patrick Peters