Wednesday, November 12, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 12, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
FOGGY UNDERCAST LIFTS BY MID MORNING, THICK FOG
AND LIMITED VISIBILITY ON GREAT BLUE HILL
An impressively thick, yet shallow layer of fog
was present for this morning’s 7:00 AM EST observation
in all directions, leaving only Great Blue Hill, the Hancock
Building and Prudential Center above the fog. Shortly after,
the fog lifted and covered the hill limiting visibility
at times down to 1/16 of a mile and only 100 feet vertically.
Last night’s overnight low of 50F was just 2 degrees below
what should be our daily normal maximum of 52F for this
time of the year. Yesterday’s 24-hr average of 52F was
9 degrees above the norm.
Today’s Observations:
7 A.M.
Weather: Few altocumulus distant in all directions,
scattered cirrus, inversion present in all direction with
dense fog below, estimated tops of 500 ft over city
Temperature: 52F; Dew Point: 52F; Wind: ESE at 9 kts
Sea-level pressure: 29.90 ins. Hg, decreasing, then more quickly
Visibility: 70 miles
6-hr max temp: 52F
6-hr min temp: 50F
24-hr precip: 0.00 inches
BHO SA 1155 250 SCT 70 125/52/52/1109/990/
INVSN PRSNT ALQDS ESTMTD TOP 5HND OVR CITY DNS FG BLO INVSN ALQDS
FEW AC DSNT ALQDS/ 8/071 58014 10052 20050
10 A.M.
Weather: Thick fog
Temperature: 52F; Dew Point: 52F; Wind: Calm
Sea-level pressure: 29.91 ins. Hg, increasing, then decreasing and higher
Visibility: 1/8 of a mile, obscured by thick fog
3-hr precip: 0.00
BHO SA 1455 W2 X 1/8F 130/52/52/0000/991/ WND CALM/ 8//// 50005
1 P.M.
Weather: Fog
Temperature: 56F; Dew Point: 55F; Wind: SSW at 7 kts
Sea-level pressure: 29.87 ins. Hg, falling then more slowly
Visibility: 5 miles, obscured by fog
6-hr min temp: 56F
6-hr max temp: 50F
6-hr precip: 0.00 inches
BHO SA 1755 W3 X 5F 114/56/55/2007/987/ 8//// 56016 10056 20050
WEATHER SUMMARY FOR TUESDAY, NOVEMBER 11, 2014
TEMPERATURE (DEGREES F)
MAX…..61 NORMAL…..52
MIN…..43 NORMAL…..35
MEAN….52 NORMAL…..43
DEPARTURE FROM 30-YEAR NORMAL…………………….+9
TOTAL DEPARTURE FOR THE MONTH……………………+10 [+0.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..13 DEPARTURE………..-9
TOTAL HEATING UNITS FOR THE MONTH………….212 DEPARTURE……….-10
TOTAL HEATING UNITS FOR THE SEASON…………634 DEPARTURE………-151
TOTAL HEATING UNITS LAST SEASON TO DATE…….690 DIFFERENCE………-56
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………22 S AT 1:21 P.M.
ASOS…………………..25 S AT 1:22 P.M.
DAVIS………………….23 S AT 1:23 P.M. RMY 25
FASTEST MILE FOR YESTERDAY………………..19 S AT 1:21 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..20 S AT 1:22 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….18 S AT 1:24 P.M.
AVERAGE WIND SPEED AND DIRECTION…………11.1 SSE
ASOS…………………10.9
DAVIS………………..10.4 S (174 degrees)
* 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……….1.66 DEPARTURE……..-0.06
ASOS…………..1.69
TOTAL PRECIPITATION FOR THE YEAR……….43.21 DEPARTURE……..-2.28
ASOS………….43.56
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST
RMY: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
11/1 45/36/41/-5/…./0.0/000/00 35 NNE RMY N/A
11/2 37/32/35/-11/…./1.8/000/00 46 NW RMY 49
11/3 50/30/45/-6/0.00/0.0/…/.. 39 WNW RMY 43
11/4 61/44/53/+8/0.00/0.0/…/.. 28 SSW RMY 32
11/5 66/50/58/+13/0.00/0.0/…/.. 29 SSW RMY N/A
11/6 52/45/49/+4/0.58/0.0/000/00 23 NE RMY 24
11/7 46/34/40/-5/0.00/0.0/…/.. 39 NW RMY 42
11/8 47/30/39/-5/0.00/0.0/…/.. 24 W RMY 25
11/9 56/38/47/+3/0.00/0.0/…/.. 23 SSW RMY N/A
11/10 58/40/49/+5/0.00/0.0/…/.. 17 S RMY 20
11/11 61/43/52/+9/0.00/0.0/…/.. 22 S RMY 25
11/12 morning low temp: 50F since midnight; normal low now 35F
DAILY RECORDS FOR NOVEMBER 2014:
11/2 – A NEW RECORD DAILY SNOWFALL 1.8 INCHES;
surpasses the previous record of 0.2 ins. in 1906, 1951
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR NOVEMBER 12
HIGH 74 IN 1909
LOW 18 IN 1926
PRECIP 3.25 INCHES IN 1947
SNOWFALL 8.1 INCHES IN 1987
PEAK GUST 79e MPH NW IN 1947
RECORDS FOR NOVEMBER 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 INCHES IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
