Saturday, January 4, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JANUARY 4, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
BITTER COLD TEMPERATURES THIS MORNING WITH VERY DRY AIR…
TEMPERATURE RECOVERING TO THE 20S TODAY UNDER FULL SUNSHINE
AND S-SW WINDS…
The low temperature this morning of -4F was still well above the
record low of -8F for the date set in 1904 and 1981. The high and
low temperatures for Friday were 12F and -3F, with the minimum
occurring at midnight. These were the coldest temperatures since
a high of 11F and a low of -7F were observed on January 24, 2011.
The low temperature of -3F on the 3rd was one degree above the
record low for that date of -4F set in 1904. The wind has
diminished from yesterday, though a sustained wind of 15-20 mph
earlier this morning dropped the wind chill to -15F. The sky
has been mostly sunny today with only a few altocumulus and
cirrus in the area, and the visibility has climbed to about 70
miles by early afternoon as the dew points rise from the single
digits below zero overnight and this morning to the single
digits above zero at mid-day. A total of 12 inches of snow
remains on the summit after the last snow storm.
THE PRELIMINARY DECEMBER 2013 STATS
[Departures are relative to the 1981-2010 averages]TEMPERATURE: Deg. F
Avg. Max. 38.0 [-1.1]
Avg. Min. 23.7 [+0.1]
Mean 30.9 [-0.4]
24-hr. corrected mean: 30.7
Max. temp: 63F on 22nd
Min. temp: 7F on 17th
Total heating degree day units: 1053 [+10]
Total seasonal heating units: 2277 [-28 less than average] [Season starts 7/1 ]
Seasonal total this date 2012: 2028 [249 more than last season]
PRECIPITATION: Inches
Total: 5.27 [+0.38]
Greatest in 24 hours: 1.43 (14-15th)
Total snowfall: 15.5 [+2.1]
Greatest in 24 hours: 6.8 inches (14-15th)
WIND
Av. speed (uncorrected): 11.9 mph
Av. speed (corrected): 12.3 mph
Prevailing direction: W 15%
SUNSHINE
Total astronomical minutes: 5,772 of possible 17,037 or 34%
Total Campbell Stokes card minutes; 5,574 of possible 16,470 or 34%
PRELIMINARY ANNUAL STATS FOR 2013
TEMPERATURE: Deg. F
Avg. Max. 58.5 [+0.8]
Avg. Min. 41.5 [+1.1]
Mean 50.0 [+0.9]
PRECIPITATION: Inches
Total: 51.87 [-1.55]
Snowfall: 99.3 [+36.6] (Jan-Dec)
Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus NW-E, few stratocumulus distant
offshore NE-ESE, total new snow past 24 hours 0.7 inch,
wind chill -15F
Temperature: -1F; Dew Point: -7F; Wind: WSW at 8 kts
Sea-level pressure: 30.47 ins. Hg, rising
Visibility: 55 miles
6-hr. min temp: -4F
24-hour precipitation: 0.05 inch
24-hour snowfall: 0.7 inch
Snow cover: 12 inches
BHO SA 1155 CLR 55 317/-1/-7/2408/047/ FEW AC NW-E FEW SC DSNT OFFSHR
NE-ESE TOTAL NEW SNW PAST 24 HRS 0.7 IN WND CHILL -15/ 8/530 4/012
53013 70005 11001 21004
10 A.M.
Weather: Clear, few altocumulus SSW-E, few cirrus overhead, thin
smoke layer along horizon WSW-NE
Temperature: 10F; Dew Point: -7F; Wind: SSW at 12 kts,
Sea-level pressure: 30.50 ins. Hg, rising
Visibility: 60 miles
BHO SA 1455 CLR 60 328/10/-7/2012/050/ FEW AC SSW-E FEW CI OHD THN K LYR
ALG HRZN WSW-NE/ 8/031 51011
1 P.M.
Weather: Clear, few cumulus distant SE-SW, few altocumulus lenticularis
distant NNW, few altocumulus SSW-E, few cirrus overhead
Temperature: 22F; Dew Point: -2F; Wind: SSW at 8 kts
Sea-level pressure: 30.40 ins. Hg, falling
Visibility: 70 miles
6-hr max. temp: 22F
BHO SA 1755 CLR 70 293/22/-2/2008/040/ FEW CU DSNT SE-SW FEW ACSL DSNT
NNW FEW AC SSW-E FEW CI OVHD/ 8/141 58035 10022 21001
WEATHER SUMMARY FOR FRIDAY, JANUARY 3, 2014
TEMPERATURE (DEGREES F)
MAX…..12 NORMAL…..35
MIN…..-3 NORMAL…..18
MEAN…..5 NORMAL…..26
DEPARTURE FROM 30-YEAR NORMAL…………………..-21
TOTAL DEPARTURE FOR THE MONTH…………………..-42 [-14.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..60 DEPARTURE…….. +21
TOTAL HEATING UNITS FOR THE MONTH………….157 DEPARTURE………+42
TOTAL HEATING UNITS FOR THE SEASON………..2434 DEPARTURE………+14
TOTAL HEATING UNITS LAST SEASON TO DATE……2163 DIFFERENCE…….+271
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………36 N AT 5:47 A.M.
AERO…………………..39 N AT 5:47 A.M.
ASOS…………………..40 N AT 5:48 A.M.
DAVIS………………….35 N AT 12:22 A.M. RMY 34
FASTEST MILE FOR YESTERDAY………………..27 N AT 6:30 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..26 N AT 6:35 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….25 N AT 6:34 A.M.
AVERAGE WIND SPEED AND DIRECTION…………17.9 N
ASOS…………………17.1
DAVIS………………..15.6 NNW [337]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.05 DEPARTURE………….-0.10
ASOS…………..0.07
TOTAL PRECIPITATION FOR THE MONTH……….1.35 DEPARTURE………….+0.91
ASOS…………..1.53
TOTAL PRECIPITATION FOR THE YEAR………..1.35 DEPARTURE………….+0.91
ASOS…………..1.53
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..0.7 DEPARTURE…………..+0.1
TOTAL SNOWFALL FOR THE MONTH………….15.6 DEPARTURE………….+13.9
TOTAL SNOWFALL FOR THE SEASON…………31.2 DEPARTURE………….+14.1
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 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
12/1 45/30/38/+1/0.28/T/000/00 22 SSE AERO 23 MPH SSE RMY 23
12/2 38/34/36/0/T/0.0/000/00 15 NW AERO 15 MPH NW RMY 16
12/3 45/32/39/+3/0.00/0.0/284/51 18 NNW AERO 18 MPH NNW RMY 20
12/4 43/29/36/+1/0.00/0.0/389/70 21 WNW AERO 21 MPH WNW RMY 21
12/5 53/38/46/+11/0.02/0.0/000/00 36 S AERO 40 MPH S RMY 39
12/6 55/33/44/+9/0.38/T/000/00 25 SSW AERO 28 MPH SSW RMY N/A
12/7 40/26/33/-1/0.12/T/287/52 23 NW AERO 25 MPH NW RMY N/A
12/8 30/22/26/-8/T/T/039/07 25 NW AERO 27 MPH NW RMY N/A
12/9 41/25/33/-1/0.35/0.6/000/00 28 E AERO 28 MPH E RMY 24
12/10 33/21/27/-6/0.14/2.1/000/00 28 W AERO 28 MPH W RMY 28
12/11 28/19/24/-9/0.00/0.0/345/63 27 SW AERO 28 MPH SW RMY 27
12/12 23/14/19/-14/0.00/0.0/542/99 28 WNW AERO 31 MPH NW RMY 30
12/13 28/14/21/-11/0.00/0.0/405/74 31 W AERO 32 MPH W RMY 33
12/14 28/9/19/-13/0.45/4.8/000/00 30 E AERO 26 MPH E RMY N/A
12/15 36/21/29/-3/0.98/2.0/000/00 48 NE AERO 50 MPH NE RMY 51
12/16 27/14/21/-10/0.00/0.0/529/97 36 W AERO 37 MPH W RMY N/A
12/17 23/7/15/-16/0.53/5.5/104/19 28 N AERO 30 MPH N RMY 28
12/18 32/15/24/-7/0.00/0.0/436/80 29 WNW AERO 30 MPH NW RMY 29
12/19 42/22/32/+2/0.00/0.0/425/78 38 SW AERO 44 MPH SW RMY 42
12/20 52/34/43/+13/0.00/0.0/332/61 26 SSW AERO 29 MPH SSW RMY 29
12/21 58/42/50/+20/0.00/0.0/082/15 28 SSW AERO 29 MPH SSW RMY 30
12/22 63/35/49/+20/0.01/0.0/000/00 37 SW AERO 41 MPH SW RMY 41
12/23 37/32/35/+6/0.73/0.0/000/00 24 NW AERO 25 MPH NW RMY 25
12/24 36/25/31/+2/T/T/142/26 25 NW AERO 29 MPH N RMY N/A
12/25 25/13/19/-9/0.00/0.0/480/88 29 NW AERO 30 MPH WNW RMY 30
12/26 35/19/27/-1/0.05/0.5/000/00 24 W AERO 25 MPH W RMY 25
12/27 32/22/27/-1/0.00/0.0/344/63 25 W AERO 25 MPH W RMY 26
12/28 46/25/36/+8/0.00/0.0/300/55 30 WSW AERO 32 MPH SW RMY 32
12/29 42/34/38/+11/1.23/0.0/000/00 36 NNE AERO 37 MPH NNE RMY 38
12/30 39/17/28/+1/0.00/0.0/071/13 38 W AERO 39 MPH W RMY 36
12/31 24/11/19/-9/0.00/0.0/236/43 30 W AERO 31 MPH W RMY 30
1/1 26/16/21/-6/0.00/0.0/…/.. 25 W AERO 25 MPH W RMY 27
1/2 24/0/12/-15/…./../000/00 39 NNE AERO 39 MPH NNE RMY 39
1/3 12/-3/5/-21/…/../000/00 36 N AERO 39 MPH N RMY 34
DAILY RECORDS FOR DECEMBER 2013
12/22- NEW DAILY RECORD MAXIMUM TEMPERATURE OF 63F;
surpasses previous record of 62F set in 1994
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JANUARY 4
HIGH 60F IN 2000
LOW -8F IN 1904, 1981
PRECIP 1.79 INS. IN 1982
SNOW 8.6 INS. 1923, 1941
PEAK GUST 84 MPH S IN 1982
RECORDS FOR JANUARY 5
HIGH 61F IN 2007
LOW -9F IN 1981
PRECIP 0.98 INS. IN 1993
SNOW 4.5 INS. IN 1891
PEAK GUST 70 MPH WNW IN 1959
TODAY’S REPORT PREPARED BY: Mike Iacono / Brian Fitzgerald
