Thursday, November 14, 2013
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, NOVEMBER 14, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
EARLY SEASON COLD YESTERDAY WAS AVERAGE FOR CHRISTMAS
MEAN TEMP. OF 28F WAS 15 DEGREES COLDER THAN NORMAL
ONE OF FOUR DAYS THIS YEAR WITH SUCH A LARGE MINUS
DEPARTURE OF -15 TO -16 DEGREES
Yesterday’s winter-like cold temperatures average six weeks
early in the season. The mean temperature of 28 degrees
was normal for December 25-28! The high was 35F and low 21F.
In addition, the daily departure of minus 15 degrees was
only the 4th day this year with such a large negative
departure. January 23 had a -15, January 24 a -16,
and May 25 with a high of 50 and low of 39F also had
a negative departure of 15 degrees.
A trace of ice was observed this morning in the southwest
corner of Ponkapoag Pond, 1.5 miles SSE.
A gradual moderation in temperature was taking place today
after starting out unseasonably cold at 26F, normal is 34F.
However, it likely will not reach the daily average maximum for
November 14 which is 51F.
Today’s Observations:
7 A.M.
Weather: Broken altocumulus, broken cirrus, (2 levels)
Temperature: 31F; Dew Point: 17F; Wind: WSW at 11 kts,
Sea-level pressure: 30.11 ins. Hg, rising slightly
Visibility: 55 miles, distant haze
6-hr min temp: 26F
BHO SA 1155 E130 BKN 220 BKN 250 BKN 55 197/31/17/2411/011/
DSNT HZ/ 8/071 53002 10031 20026
10 A.M.
Weather: Thin scattered cirrus, few patches lower thin cirrus
Temperature: 40F; Dew Point: 16F; Wind: WSW at 13G20 kts,
Wind: Direction variable SSW-WNW
Sea-level pressure: 30.11 ins. Hg, about steady
Visibility: 60 miles, distant haze
BHO SA 1455 300 –SCT 60 198/40/16/2513G20/011/ FEW LWR CI
THN K LYR DSNT NNW-NE DSNT HZ WND 22V29/ 8/001 50001
1 P.M.
Weather: Thin scattered cirrus, 2 levels, few lower cirrus
Temperature: 47F; Dew Point: 20F; Wind: WSW at 12 kts,
Wind: Direction variable SSW-W
Sea-level pressure: 30.07 ins. Hg, falling then falling more rapidly
Visibility: 60 miles, NW 70 miles, light distant haze
6-hr max temp: 49F
BHO SA 1755 250 –SCT 300 –SCT 60 182/47/20/2512/007/ FEW
LWR CI VSBY NW 70 WND 21V28/ 8/001 58016 10049 20031
WEATHER SUMMARY FOR WEDNESDAY, NOVEMBER 13, 2013
TEMPERATURE (DEGREES F)
MAX…..35 NORMAL…..51
MIN…..21 NORMAL…..34
MEAN….28 NORMAL…..43
DEPARTURE FROM 30-YEAR NORMAL…………………-15
TOTAL DEPARTURE FOR THE MONTH…………………-13 [-1.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..37 DEPARTURE……..+15
TOTAL HEATING UNITS FOR THE MONTH………….284 DEPARTURE……..+18
TOTAL HEATING UNITS FOR THE SEASON…………761 DEPARTURE……..-68
TOTAL HEATING UNITS LAST SEASON TO DATE…….684 DIFFERENCE…….+77
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………29 NW AT 8:30 A.M.
AERO…………………..30 NW AT 8:30 A.M.
ASOS…………………..32 NNW AT 8:31 A.M.
DAVIS………………….28 WNW AT 8:24 A.M. RMY 30
FASTEST MILE FOR YESTERDAY………………..23 NW AT 8:40 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..23 NW AT 8:41 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….21 NW AT 8:40 A.M.
AVERAGE WIND SPEED AND DIRECTION…………14.2 WNW
ASOS…………………13.7
DAVIS………………..11.5 WNW [290 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……….0.66 DEPARTURE…………-1.38
ASOS…………..0.64
TOTAL PRECIPITATION FOR THE YEAR……….43.61 DEPARTURE…………-2.14
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………….-0.1
TOTAL SNOWFALL FOR THE MONTH………….0.2 DEPARTURE………….-0.3
TOTAL SNOWFALL FOR THE SEASON…………0.2 DEPARTURE………….-0.6
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/…/.. 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/…/.. 29 NW AERO 30 MPH NW RMY 30
11/14 morning low temp: 26F; the normal low is now 34F
DAILY RECORDS FOR NOVEMBER 2013
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 2.08 INCHES IN 2009
SNOWFALL 3.5 IN 1997
PEAK GUST 63 W IN 2003
RECORDS FOR NOVEMBER 15
HIGH 74 IN 1993
LOW 15 IN 1933
PRECIP 1.66 INCHES IN 1981
SNOWFALL 4.0 IN 1967
PEAK GUST 65 SSE IN 2008
TODAY’S REPORT PREPARED BY: Robert Skilling
