Sunday, December 1, 2013
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, DECEMBER 1, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
HUMID AND CLOUDY START TO DECEMBER
NOVEMBER ENDS COOLER AND DRIER THAN AVERAGE
December has started right on par as far as temperatures are concerned,
with today’s high and low readings nearly matching the 20 year average. Low
stratocumulus clouds have provided a complete overcast throughout the day
with the exception of a few breaks during sunrise. Occasional light rain and
even some frozen precipitation popped up sporadically but only amounting to
traces. Station pressure has plummeted in the past 28 hours, from a peak of
30.03 in Hg around 10 A.M. yesterday to 29.41 in Hg at 2 P.M. today and it
is still falling.
November ended on a chilly run of days (with the exception of Thanksgiving
Eve,) resulting in average temps for the month falling 1.7 degrees per day
below the 30 year average. The month also ended 1.17 inches short of the
average precipitation and 2.1 inches short in snowfall, which enhances the
dry trend for 2013.
Today’s Observations:
7 A.M.
Weather: Broken and overcast stratocumulus with occasional mixed light rain
and snow showers
Temperature: 35F; Dew Point: 30F; Wind: SE at 13 kts
Sea-level pressure: 30.27 ins. Hg, decreasing then decreasing more slowly
Visibility: 35 miles, light rain and fog
6-hr min temp: 31F
BHO SA 1155 E30 BKN 60 OVC 35R- 251/35/30/1413/027/ OCNL R-S- DSNT R-F-/
8/7// 56018 10035 20031
10 A.M.
Weather: Broken and overcast stratocumulus with occasional light rain
Temperature: 38F; Dew Point: 36F; Wind: SE at 10 kts
Sea-level pressure: 30.24 ins. Hg, decreasing then decreasing more rapidly
Visibility: 35 miles, light rain and fog
Visibility: Variable; 50 miles W-NNW, 15 miles N-ESE with light rain and fog
3 hour precip: Trace
BHO SA 1455 E40 BKN 60 OVC 35R- 242/38/36/1410/024/ OCNL R-
VSBY VBL 50 W-NNW AND 15RF N-ESE/ 8/7// 58009 MANUAL 6000T
1 P.M.
Weather: Broken and overcast stratocumulus with occasional mixed light rain
and snow showers
Temperature: 43F; Dew Point: 41F; Wind: SSE at 8 kts,
Sea-level pressure: 30.16 ins. Hg, decreasing then decreasing more rapidly
Visibility: miles,
ASOS 6 hour precip: 0.01 inch
Manual 6 hour precip: Trace
BHO SA 1755 E40 BKN 60 OVC 15 R-F- 212/43/41/1508/016/ OCNL R-S- DSNT R-F-/
8/7// 58030 ASOS 60001 MANUAL 6000T 10043 20035
WEATHER SUMMARY FOR SATURDAY, NOVEMBER 30, 2013
TEMPERATURE (DEGREES F)
MAX…..32 NORMAL…..45
MIN…..15 NORMAL…..29
MEAN….24 NORMAL…..37
DEPARTURE FROM 30-YEAR NORMAL…………………-13
TOTAL DEPARTURE FOR THE MONTH…………………-50 [-1.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..41 DEPARTURE……..+13
TOTAL HEATING UNITS FOR THE MONTH………….747 DEPARTURE……..+49
TOTAL HEATING UNITS FOR THE SEASON………..1224 DEPARTURE……..-37
TOTAL HEATING UNITS LAST SEASON TO DATE……1117 DIFFERENCE…….+74
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………18 SE AT 10:12 P.M.
AERO…………………..19 SE AT 11:46 P.M.
ASOS…………………..19 SE AT 10:13 P.M.
DAVIS………………….18 SE AT 10:13 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..15 SE AT 11:54 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..14 SE AT 11:58 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….15 SE AT 11:50 P.M.
AVERAGE WIND SPEED AND DIRECTION…………8.7 N
ASOS…………………8.7
DAVIS………………..7.9 ENE [68 degrees]
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……….3.59 DEPARTURE…………-1.17
ASOS…………..3.60
TOTAL PRECIPITATION FOR THE YEAR……….46.60 DEPARTURE…………-1.93
ASOS…………..N/A**
** ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…….0.0 DEPARTURE………….-0.2
TOTAL SNOWFALL FOR THE MONTH………….0.2 DEPARTURE………….-2.1
TOTAL SNOWFALL FOR THE SEASON…………0.2 DEPARTURE………….-2.4
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2013 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
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 68/56/62/+16/0.10/0.0/012/02 60 SSW AERO N/A N/A RMY 66
11/2 65/49/57/+11/0.00/0.0/296/48 22 WSW AERO N/A N/A RMY 23
11/3 49/30/40/-6/0.06/T/135/22 23 N AERO N/A N/A RMY N/A
11/4 42/27/35/-10/0.00/0.0/588/96 24 NNE AERO N/A N/A RMY 25
11/5 50/29/40/-5/0.00/0.0/487/80 16 SSW AERO N/A N/A RMY 17
11/6 59/40/50/+5/0.00/0.0/419/69 30 SSW AERO 31 MPH SSW RMY 33
11/7 65/37/51/+6/0.31/0.0/079/13 33 SW AERO 37 MPH SW RMY 37
11/8 48/31/40/-4/T/T/0.0/421/70 37 WNW AERO 37 MPH WNW RMY 39
11/9 44/29/37/-7/0.00/0.0/366/61 25 WNW AERO 25 MPH WNW RMY 29
11/10 52/40/46/+2/0.08/0.0/108/18 31 WNW AERO 33 MPH WNW RMY N/A
11/11 51/36/44/+1/0.00/0.0/500/84 36 WNW AERO 37 MPH WNW RMY 37
11/12 48/24/36/-7/0.11/0.2/000/00 42 SW AERO 43 MPH SW RMY 43
11/13 35/21/28/-15/0.00/0.0/591/100 29 NW AERO 30 MPH NW RMY 30
11/14 49/26/38/-4/0.00/0.0/536/91 25 SW AERO 25 MPH SW RMY 28
11/15 59/38/49/+7/0.00/0.0/393/67 24 S AERO 25 MPH S RMY 26
11/16 59/40/50/+8/0.00/0.0/363/62 20 WSW AERO 20 MPH WSW RMY N/A
11/17 59/42/51/+10/0.07/0.0/000/00 23 SSE AERO 25 MPH SSE RMY N/A
11/18 65/46/56/+15/0.28/0.0/400/69 40 SSW AERO 40 MPH S RMY N/A
11/19 46/28/37/-4/0.00/0.0/428/74 46 WNW AERO 46 MPH WNW RMY 46
11/20 40/25/33/-7/0.00/0.0/565/98 23 NW AERO 22 MPH NW RMY 22
11/21 46/26/36/-4/0.00/0.0/460/80 16 SW AERO 16 MPH SW RMY N/A
11/22 46/39/43/+3/0.22/0.0/000/00 17 WSW AERO 18 MPH SW RMY 19
11/23 46/27/37/-2/0.00/0.0/451/79 40 WNW AERO 44 MPH WNW RMY 48
11/24 27/17/22/-17/0.00/0.0/552/97 53 NW AERO 59 MPH NW RMY 57
11/25 32/14/23/-16/0.00/0.0/568/100 29 W AERO 29 MPH WNW RMY N/A
11/26 42/29/36/-2/0.13/T/000/00 25 SW AERO 27 MPH SW RMY 28
11/27 61/34/48/+10/2.23/0.0/000/00 63 SSE AERO 68 MPH SSE RMY 67
11/28 35/21/28/-10/0.00/0.0/…/.. 43 W AERO 46 MPH W RMY 45
11/29 33/19/26/-11/0.00/0.0/…/.. 23 NNW AERO 23 MPH NNW RMY 24
11/30 32/15/24/-13/0.00/0.0/…/.. 18 SE AERO 19 MPH SE RMY N/A
12/1 morning low temp: 30F; the normal low is now 29F
DAILY RECORDS FOR NOVEMBER 2013
11/27 – NEW RECORD MAXIMUM DAILY PRECIPITATION OF 2.23 INCHES;
surpasses the previous record of 1.92 inches in 1898
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
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
RECORDS FOR DECEMBER 2
HIGH 61 IN 1998
LOW 3 IN 1890
PRECIP 2.09 INS. IN 1974
SNOWFALL 5.0 INS. IN 1894, 1929
PEAK GUST 89e MPH SSE IN 1942
TODAY’S REPORT PREPARED BY: Forrest Iwanik
