Sunday, January 19, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 19, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
HEAVY WET SNOW TOTALING 4.2 INCHES COVERS GREAT BLUE HILL FOLLOWING
YESTERDAY’S DAY TIME STORM.
Yesterday a storm intensified off the Atlantic coast bringing rain followed
by heavy wet snow which fell at the rate of more than 1 inch per hour early
yesterday afternoon. Including the light rain that fell prior to the snow, total
liquid equivalent for the 0700 yesterday to 0700E period today was 0.81 inches of
water. With about 0.6 inches of this falling as snow, this indicates a water-heavy
snow-to-liquid ratio of approximately 7.5:1.
Low clouds, fog and a few snow showers added an additional coating to an already
white ground by mid morning today. By early afternoon sun and winds were both on the
increase ahead of a much cooler week to come. Yesterday’s daily temperature departure marks
the first time in a week that the departure has been less than +10 degrees (9 degrees
for Saturday with an average temperature of 34 degrees). Saturday’s normal daily average
temperature is 25 degrees.
Today’s Observations:
7 A.M.
Weather: Overcast stratus, few stratocumulus below summit ENE-SE,
thin fog, light glazing
Temperature: 28F; Dew Point: 27F; Wind: WSW at 8 kts
Sea-level pressure: 29.71 ins. Hg, decreasing, then increasing
Visibility: 10 miles, 5 miles ENE-SE with snow showers distant
6-hr. min temp: 28F
24-hr. Snowfall: 4.2 inches
24-hr. precipitation: 0.81 inches
BHO SA 1155 E5 OVC 10 060/28/27/2408/971/ FEW SC BBLO STA ENE-SE LIMITING VSBY
TO 5 MI LGT FG LGT GLZ TOTAL NEW SNOW PST 24 HOURS 4.2 IN/ 8/4// 4/004 55002
ASOS 70080 MANUAL 70081 10030 20028
10 A.M.
Weather: Light snow, overcast nimbostratus
Temperature: 27F; Dew Point: 26F; Wind: SSW at 13 kts,
Sea-level pressure: 29.68 ins. Hg, falling, then more quickly
Visibility: 9 miles
BHO SA 1455 E4 OVC 9S- 052/27/26/2113/968/ BINOVC LGT FG/ 8/4// 58008 6000/
1 P.M.
Weather: Scattered cumulus, broken cirrocumulus
Temperature: 28F; Dew Point: 26F; Wind: SW at 14G25 kts,
Sea-level pressure: 29.59 ins. Hg, falling, then more quickly
Visibility: 25 miles
6-hr max. temp: 30F
6-hr min. temp: 27F
6-hr snowfall: 0.5 inches
BHO SA 1755 20 SCT E250 BKN 25 021/28/26/2214G25/959/ NEW SNW PST 6 HRS 0.5 IN/
8/107 58031 ASOS 60003 MANUAL 60003 10030 20027
WEATHER SUMMARY FOR SATURDAY, JANUARY 18, 2014
TEMPERATURE (DEGREES F)
MAX…..37 NORMAL…..33
MIN…..30 NORMAL…..17
MEAN….34 NORMAL…..25
DEPARTURE FROM 30-YEAR NORMAL……………………+9
TOTAL DEPARTURE FOR THE MONTH…………………..+56 [+2.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..31 DEPARTURE……….-9
TOTAL HEATING UNITS FOR THE MONTH………….653 DEPARTURE………-55
TOTAL HEATING UNITS FOR THE SEASON………..2930 DEPARTURE………-82
TOTAL HEATING UNITS LAST SEASON TO DATE……2602 DIFFERENCE…….+328
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………18 E AT 10:18 A.M.
AERO…………………..17 E AT 10:17 A.M.
ASOS…………………..20 E AT 10:18 A.M.
DAVIS………………….18 N AT 2:30 A.M. RMY 18
FASTEST MILE FOR YESTERDAY………………..13 E AT 10:18 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..15 E AT 10:18 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….14 E AT 8:15 A.M.
AVERAGE WIND SPEED AND DIRECTION………….7.2 E
ASOS………………….8.1
DAVIS……………….. 6.8 NNE [20 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.81 DEPARTURE………….+0.68
ASOS…………..0.80
TOTAL PRECIPITATION FOR THE MONTH……….4.13 DEPARTURE………….+1.56
ASOS…………..4.52
TOTAL PRECIPITATION FOR THE YEAR………..4.13 DEPARTURE………….+1.56
ASOS…………..4.52
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..4.2 DEPARTURE…………..+3.6
TOTAL SNOWFALL FOR THE MONTH………….20.1 DEPARTURE………….+10.0
TOTAL SNOWFALL FOR THE SEASON…………35.8 DEPARTURE…………..+9.7
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/…./…/…/.. 18 E AERO 17 MPH E RMY 18
1/19 morning low temp: 27F; 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 19
HIGH 59F IN 1973
LOW -11F IN 1887
PRECIP 2.34 INS. IN 1936
SNOWFALL 10.5 INS. IN 1936
PEAK GUST 93e MPH WNW IN 1943
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
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
