Monday, January 20, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, JANUARY 20, 2014 MARTIN LUTHER KING DAY
ALL TIMES ARE IN EASTERN STANDARD TIME
WEEKEND SNOWFALL TOTALED 4.7 INCHES [3 SEPARATE EVENTS]
Rain changed to snow Saturday morning and fell heavily for awhile
around noon. By the time the snow ended at mid-afternoon there was
a total of 3.9 inches. One clap of thunder was heard during the snow.
Snow which had ended at mid-afternoon started up again Saturday evening
and left an additional 0.3 inch by midnight for a daily total of 4.2
inches.
Light snow and snow flurries began Sunday morning and 0.5 inch was
measured at the end of this event with 3 measurable hours.
Today’s Observations:
7 A.M.
Weather: Overcast altostratus, few altocumulus/altocumulus lenticularis
ENE-S, large break in overcast extending ENE-S, colorful sunrise
Temperature: 30F; Dew Point: 22F; Wind: SSW at 13 kts
Sea-level pressure: 29.57 ins. Hg, decreasing slightly
Visibility: 30 miles, distant haze
6-hr. min temp: 28F
Total snow depth on ground: 3 inches
BHO SA 1155 E170 OVC 35 102/30/22/2113/957/ FEW LWR AC/ACSL NE-S
BINOVC XTDNG DSNT ENE-S DSNT HZ COLORFUL SUNRISE TOTAL NEW SNW PST 24
HRS 0.5 IN/ 8/070 4/003 58004 ASOS 70003 MANUAL 70003 10030 20028
10 A.M.
Weather: Overcast stratocumulus, bright sky, higher clouds visible,
to the east thru south, small break in overcast SE
Temperature: 34F; Dew Point: 24F; Wind: WSW at 11G17 kts,
Sea-level pressure: 29.59 ins. Hg, rising then more slowly
Visibility: 30 miles
BHO SA 1455 E50 OVC 30 022/34/24/2411G17/959/ BRGHT SPTS/HIER CLDS VSBL
E-S SML BINOVC SE DSNT HZ WND GRDLY VEERING/ 8/57/ 51010
1 P.M.
Weather: Broken altostratus, overcast dense cirrostratus, few cumulus
fractus, cumulus E-SW, break in overcast SE and W-NW, sun dimly visible
Temperature: 37F; Dew Point: 25F; Wind: WSW at 13 kts,
Sea-level pressure: 29.52 ins. Hg, falling, then more quickly
Visibility: 30 miles, distant haze
6-hr max. temp: 37F
6-hr min. temp: 30F
BHO SA 1755 E150 BKN 200 OVC 30 998/37/25/2513/952/ FEW CUFRA/CU
E-SSW BINOVC DSNT E-SE AND DSNT W-NW DSNT HZ WND 22V27/
8/117 58024 10037 20030
WEATHER SUMMARY FOR SUNDAY, JANUARY 19, 2014
TEMPERATURE (DEGREES F)
MAX…..32 NORMAL…..33
MIN…..27 NORMAL…..17
MEAN….30 NORMAL…..25
DEPARTURE FROM 30-YEAR NORMAL……………………+5
TOTAL DEPARTURE FOR THE MONTH…………………..+61 [+3.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..35 DEPARTURE……….-5
TOTAL HEATING UNITS FOR THE MONTH………….688 DEPARTURE………-60
TOTAL HEATING UNITS FOR THE SEASON………..2965 DEPARTURE………-87
TOTAL HEATING UNITS LAST SEASON TO DATE……2633 DIFFERENCE…….+332
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………28 SW AT 9:18 P.M. * #
AERO…………………..35 SW AT 1:35 P.M.
ASOS…………………..35 SW AT 6:15 P.M.
DAVIS………………….34 SSW AT 6:14 P.M. RMY 34
FASTEST MILE FOR YESTERDAY………………..23 SW AT 6:15 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..25 SW AT 1:36 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….24 SSW AT 9:18 P.M.
AVERAGE WIND SPEED AND DIRECTION…………12.4 SW
ASOS…………………14.4
DAVIS………………..11.3 SW [225 deg.]
* last of several occurrences…
# cups may have had ice accumulation and thus the speed slowed…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.05 DEPARTURE………….-0.08
ASOS…………..0.05
TOTAL PRECIPITATION FOR THE MONTH……….4.16 DEPARTURE………….+1.46
ASOS…………..4.54
TOTAL PRECIPITATION FOR THE YEAR………..4.16 DEPARTURE………….+1.56
ASOS…………..4.54
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..0.5 DEPARTURE…………..+3.6
TOTAL SNOWFALL FOR THE MONTH………….20.6 DEPARTURE…………..+9.9
TOTAL SNOWFALL FOR THE SEASON…………36.3 DEPARTURE…………..+9.6
PRELIMINARY CLIMATE SUMMARY FOR JANUARY 2014 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
1/1 26/16/21/-6/0.00/0.0/505/92 25 W AERO 25 MPH W RMY 27
1/2 24/00/12/-15/0.97/10.9/000/00 39 NNE AERO 39 MPH NNE RMY 39
1/3 12/-3/05/-21/0.38/4.7/270/49 36 N AERO 39 MPH N RMY 34
1/4 25/-4/11/-15/0.00/0.0/545/99 35 SSW AERO 37 MPH SSW RMY 38
1/5 42/23/33/+07/0.08/0.0/259 47 30 SE AERO 32 MPH SE RMY 42
1/6 57/25/41/+15/0.29/0.0/006/01 41 S AERO 46 MPH S RMY 48
1/7 25/06/16/-10/0.00/0.0/555/100 44 WNW AERO 46 MPH WNW RMY 42
1/8 21/3/12/-14/0.00/0.0/550/99 28 WSW AERO 29 MPH WSW RMY N/A
1/9 28/13/21/-5/0.00/0.0/540/97 23 WNW AERO 24 MPH WNW RMY 27
1/10 37/17/27/+2/0.05/0.3/000/00 17 SSW AERO 18 MPH SW RMY N/A
1/11 57/37/47/+22/0.67/0.0/000/00 50 S AERO 59 MPH S RMY 59
1/12 51/32/42/+17/0.04/0.0/286/51 41 W AERO 44 MPH W RMY 42
1/13 50/30/40/+15/0.00/0.0/…/.. 33 S AERO 36 MPH S RMY 37
1/14 49/41/45/+20/0.83/0.0/…/.. 35 S AERO 37 MPH S RMY 32
1/15 46/33/40/+15/0.00/0.0/…/.. 24 W AERO 23 MPH W RMY N/A
1/16 40/34/37/+12/0.00/0.0/…/.. 14 ENE AERO 13 MPH ENE RMY 14
1/17 44/33/39/+14/0.00/0.0/…/.. 21 SW AERO 21 MPH SW RMY 22
1/18 37/30/34/+9/0.82/4.2/…/.. 18 E AERO 17 MPH E RMY 18
1/19 32/27/30/+5/0.03/0.5/…/.. 28 SW AERO 35 MPH SW RMY 34
1/20 morning low temp: 28F; the normal low is now 17F
DAILY RECORDS FOR JANUARY 2014
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JANUARY 20
HIGH 59F IN 1951
LOW -9F IN 1901
PRECIP 1.95 INS. IN 1978
SNOWFALL 19.0 INS. IN 1978 [RECORD FOR MONTH]
PEAK GUST 76e MPH NE IN 1978
RECORDS FOR JANUARY 21
HIGH 65F IN 1906
LOW -4F IN 1888,1893
PRECIP 2.49 INS. IN 1979
SNOWFALL 7.6 INS. IN 2011
PEAK GUST 78e MPH SE IN 1979
TODAY’S REPORT PREPARED BY: Robert Skilling
