Wednesday, November 26, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, NOVEMBER 26, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
RAIN TRANSITIONS WITH SLEET, SNOW, AS TEMPERATURES
SLIDE THROUGH THE 30S
Yesterday’s maximum of 61F, reached early at the 10:00 AM EST
observation, fell steadily throughout the day into today.
This morning’s 7:00 AM EST observation continued the slide at
41F, dropping to freezing by the 1:00 PM EST observation.
Rain began this morning just before 8:00 AM EST and began mixing
with sleet at 9:44 AM EST. Rain ended at 10:30 AM EST. Light
snow began to mix with sleet at 11:05 AM EST, with precipitation
finally transitioning to all snow at 11:29 AM EST. Snow has been
slow to accumulate however.
At the 1:00 PM EST observation precipitation totaled 0.4 inches
of frozen precipitation (snow and ice pellets) with moderate
snow falling, and 0.35 inches of liquid equivalent and rain.
Today’s daily record snowfall of 3.0 inches, set in 1974,
may be in jeopardy depending on accumulation here on the summit.
Today’s Observations:
7 A.M.
Weather: Overcast altocumulus
Temperature: 41F; Dew Point: 29F; Wind: estimated NW at 6 kts
Wind Speed: Light
Sea-level pressure: 30.16 ins. Hg, falling, then rising
Visibility: 50 miles, except 30 miles SW-WNW
6-hr max temp: 44F
6-hr min temp: 41F
24-hr precip: 0.00 in.
BHO SA 1155 E100 OVC 50 213/41/29/E3206/016/
VSBY SW-WNW 30 MI WND LGT/ 8/02/ 55009 10044 20041
10 A.M.
Weather: Fog, light ice pellets mixed with rain
Temperature: 37F; Dew Point: 35F; Wind: NE at 8 kts
Sea-level pressure: 30.14 ins. Hg, falling, then more quickly
Visibility: 5 miles, obscured by fog and ice pellets and rain
3-hr precip: 0.05 in
BHO SA 1455 E35 OVC 5IP-R-F 208/37/35/0408/014/
R-B1259IPB44/ 8/6// 58005 ASOS 60005 MANUAL 60005
1 P.M.
Weather: Moderate snow, thick fog
Temperature: 33F; Dew Point: 33F; Wind: NNE at 10 kts
Sea-level pressure: 30.03 ins. Hg, falling, then more quickly
Visibility: 1/8 of a mile, obscured by thick fog, moderate snow
6-hr max temp: 42F
6-hr min temp: 32F
6-hr precip: 0.35 in.
6-hr frozen precip (snow and ice pellets): 0.4 in.
BHO SA 1755 W3 X 1/8SF 169/33/33/0210/003/ NEW SNW PST 6 HRS
0.4 INS/ 8//// 58039 ASOS 60034 MANUAL 60035 10042 20032
SUMMARY FOR TUESDAY, NOVEMBER 25, 2014
TEMPERATURE (DEGREES F)
MAX…..61 NORMAL…..47
MIN…..44 NORMAL…..31
MEAN….53 NORMAL…..39
8DEPARTURE FROM 30-YEAR NORMAL……………………+14
TOTAL DEPARTURE FOR THE MONTH…………………….-17 [-0.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..12 DEPARTURE……….-14
TOTAL HEATING UNITS FOR THE MONTH………….577 DEPARTURE……….+17
TOTAL HEATING UNITS FOR THE SEASON…………999 DEPARTURE………-125
TOTAL HEATING UNITS LAST SEASON TO DATE……1061 DIFFERENCE………-62
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………28 SW AT 12:28 P.M.
ASOS…………………..30 SW AT 12:29 P.M.
DAVIS………………….28 SSW AT 7:12 A.M. RMY 30
FASTEST MILE FOR YESTERDAY………………..23 SSW AT 7:13 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..22 SSW AT 7:20 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….22 SSW AT 7:20 A.M.
AVERAGE WIND SPEED AND DIRECTION…………14.3 SW
ASOS…………………14.2
DAVIS………………..12.9 SW (226 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……….4.30 DEPARTURE…..+0.35
ASOS…………..4.37
TOTAL PRECIPITATION FOR THE YEAR……….45.85 DEPARTURE…..-1.87
ASOS………….46.24
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH…………….5.3 DEPARTURE……+3.8
TOTAL SNOWFALL FOR THE SEASON……………5.3 DEPARTURE……+3.5
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/-5/0.79/0.0/000/00 35 NNE RMY N/A
11/2 37/32/35/-11/0.29/1.8/000/00 46 NW RMY 49
11/3 50/30/45/-6/0.00/0.0/584/95 39 WNW RMY 43
11/4 61/44/53/+8/0.00/0.0/208/34 28 SSW RMY 32
11/5 66/50/58/+13/0.00/0.0/006/01 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/-5/0.00/0.0/079/13 39 NW RMY 42
11/8 47/30/39/-5/0.00/0.0/555/92 24 W RMY 25
11/9 56/38/47/+3/0.00/0.0/204/34 23 SSW RMY N/A
11/10 58/40/49/+5/0.00/0.0/592/99 17 S RMY 20
11/11 61/43/52/+9/0.00/0.0/358/60 22 S RMY 25
11/12 59/40/50/+7/0.00/0.0/095/16 22 W RMY 25
11/13 49/32/41/-2/0.08/T/450/76 21 NW RMY N/A
11/14 41/27/34/-8/0.29/3.5/442/75 23 NW RMY 27
11/15 37/24/31/-11/0.00/0.0/569/97 23 NW RMY 23
11/16 39/26/33/-9/0.00/0.0/012/02 17 S RMY 19
11/17 52/34/43/+2/1.67/0.0/000/00 29 ENE RMY 31
11/18 44/23/34/-7/0.00/0.0/494/85 33 W RMY 39
11/19 35/19/27/-14/0.00/0.0/544/94 31 WSW RMY N/A
11/20 47/26/37/-3/0.00/0.0/542/94 35 WSW RMY 41
11/21 34/22/28/-12/0.00/0.0/…/.. 31 WNW RMY 39
11/22 43/20/32/-8/0.00/0.0/…/.. 32 SW RMY 36
11/23 58/40/49/+10/0.00/0.0/…/.. 26 SW RMY N/A
11/24 63/43/53/+14/0.60/0.0/…/.. 44 S RMY 53
11/25 61/44/53/+14/0.00/0.0/…/.. 28 SW RMY 30
11/26 morning low temp: 41F since midnight; normal low now 30F
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
11/14 – DAILY SNOWFALL RECORD EQUALED: 3.5 INCHES;
ties previous record on this date in 1997
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR NOVEMBER 26
HIGH 66 IN 1979
LOW 6 IN 1938
PRECIP 2.22 INS IN 1888
SNOWFALL 3.0 INS IN 1974
PEAK GUST 78 SSE IN 1964
RECORDS FOR NOVEMBER 27
HIGH 68 IN 1896
LOW 5 IN 1932
PRECIP 1.92 INS IN 1898
SNOWFALL 16.0 INS IN 1898
PEAK GUST 68 NW IN 1997
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
