Sunday, January 31, 2016

| January 31, 2016 | Reply

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 31, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

CLOUDS MOVE IN AS TEMPERATURES RISE

The morning low temperature was 36 degrees since midnight
and high through early afternoon  which is pretty seasonable
for this time of year.

Cloudy conditions prevailed throughout the morning and into
the afternoon as the pressure began to fall.  Temperatures have
warmed into the lower 50’s, and as of the 1 o’clock observation,
were just 4 degrees shy of the record.  Humidity has continued to
drop all day and now sits at 41%.

Today’s Observations:

7 A.M.
Weather: Broken Altocumulus and Altostratus
Temperature: 36F; Dew Point: 27F; Wind: SSW at 14 kts,
Sea-level pressure: 29.23 ins. Hg, increasing then more slowly
Visibility: 35 miles,
6-hr Max temp: 37F
6-hr Min temp: 36F
24-hr precip: none
24-hr snowfall: none
Snow depth: TRACE(snow cover patchy)
BHO SA 1155 E130 BKN 35 135/36/27/2114/993/ HAZY/ 8/07/
51006 10037 20036

10 A.M.
Weather: Broken Altocumulus and Altostratus
Temperature: 41F; Dew Point: 29F; Wind: WSW at 12 kts,
Sea-level pressure: 29.92 ins. Hg, increasing then decreasing
Visibility: 35 miles
BHO SA 1455 E110 BKN 35 132/41/29/2112/992/ HAZY/ 8/07// 58003

1 P.M.
Weather: Broken Cirrostratus
Temperature: 39F; Dew Point: 19F; Wind: SW at 8 kts,
Sea-level pressure: 29.85 ins. Hg, increasing then decreasing
but lower
Visibility: 50 miles
6-hr Max temp: 53F
6-hr Min temp: 36F
BHO SA 1755 E150 BKN 50 111/53/30/2112/985/ LGT DSNT HZ/
8/008 58021 10053 20036

SUMMARY FOR SATURDAY, JANUARY 30, 2016

TEMPERATURE (DEGREES F)
MAX…..42   NORMAL…..34
MIN…..26   NORMAL…..17
MEAN….33   NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL……………………+8
TOTAL DEPARTURE FOR THE MONTH…………………..+121 [+3.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..31   DEPARTURE………-9
TOTAL HEATING UNITS FOR THE MONTH…………1067   DEPARTURE……..-120
TOTAL HEATING UNITS FOR THE SEASON………..2723   DEPARTURE……..-768
TOTAL HEATING UNITS LAST SEASON TO DATE……3297   DIFFERENCE…….-574

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….39 SW AT   11:57 P.M.
ASOS……………………38 SW AT   11:55 P.M.
DAVIS…………………..38 SW AT   11:54 P.M. RMY 38
FASTEST MILE FOR YESTERDAY…………………29 SW AT   11:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………30 SW AT   11:55 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..30 SW AT   11:55 P.M.
AVERAGE WIND SPEED AND DIRECTION……………14.5 NW
ASOS……………………15.0
DAVIS…………………..13.0 WSW [251 Deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.77  DEPARTURE……-0.45
ASOS…………..3.94
TOTAL PRECIPITATION FOR THE YEAR………..3.77  DEPARTURE……-0.45
ASOS…………..3.94

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH……………14.3  DEPARTURE…….-2.3
TOTAL SNOWFALL FOR THE SEASON…………..15.6  DEPARTURE……-17.0

PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/ AERO/RMY GUST
AERO: Aerovane wind recording system 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

1/1   37/29/33/+6/0.00/0.0/005/01           29 W               RMY 29
1/2   37/27/32/+5/0.00/0.0/461/84           31 W               RMY N/A
1/3   41/27/34/+8/0.00/0.0/501/91           28 W               RMY 29
1/4   30/10/20/-6/T/T/000/00                29 NNW             RMY 29
1/5   23/4/14/-12/0.00/0.0/552/100          28 NNW             RMY N/A
1/6   43/17/30/+4/0.00/0.0/553/100          24 SW              RMY 24
1/7   43/25/34/+8/0.00/0.0/521/94           21 SW              RMY N/A
1/8   40/28/34/+8/T/0.0/000/00              28 E   AERO 25 ENE RMY 25
1/9   39/36/38/+12/T/0.0/000/00             21 ENE AERO 20 ENE RMY N/A
1/10  58/38/48/+23/1.55/0.0/000/00          53 SSE AERO 55 SSE RMY 53
1/11  48/21/35/+10/0.00/0.0/559/100         43 W   AERO 45 WSW RMY N/A
1/12  35/19/27/+2/…./…/359/64           30 SE  AERO N/A    RMY N/A
1/13  30/17/24/-1/…./…/551/98           50 W   AERO 58 W   RMY 54
1/14  28/17/23/-2/T/T/389/69                26 W   AERO N/A    RMY 25
1/15  40/23/32/+7/0.00/0.0/102/18           26 ESE AERO 25 ESE RMY 23
1/16  41/32/37/+12/1.03/T/000/00            32 NNW AERO 32 NNW RMY 28
1/17  33/26/30/+5/…./…/…/..           29 WNW AERO 28 WNW RMY N/A
1/18  26/15/21/-4/…./…/487/82           50 W   AERO 50 W   RMY 47
1/19  22/13/18/-7/0.00/0.0/194/34           55 WNW AERO 59 W   RMY 55
1/20  30/15/23/-2/0.00/0.0/…/..           46 WNW AERO 47 WNW RMY 45
1/21  30/15/23/-2/0.00/0.0/…/..           38 WNW AERO 38 NW  RMY 35
1/22  28/14/21/-4/0.00/0.0/…/..           32 NW  AERO 32 NW  RMY N/A
1/23  30/18/24/-1/0.74/7.1/000/00           54 NE  AERO 56 NE  RMY 50
1/24  33/14/24/-1/T/T/…/..                34 N   AERO 37 N   RMY 29
1/25  37/20/29/+4/0/0/…/..                22 NW  AERO 22 NW  RMY N/A
1/26  49/27/38/+13/0/0/…/..               44 SSW AERO 47 SSW RMY 43
1/27  43/27/35/+10/0/0/…/..               38 WNW AERO 40 SSW RMY 37
1/28  41/23/32/+7/0/0/…/..                29 SSW AERO 29 SSW RMY 29
1/29  39/32/36/+11/0/0/…/..               25 NW  AERO 24 NW  RMY 28
1/30  42/26/33/+8/0/0/…/..                39 SW  AERO 43 SW  RMY 38

1/31 morning low since midnight 36F; normal low is 17F

DAILY RECORDS FOR JANUARY 2016

**1/10/16: NEW DAILY RECORD MAXIMUM TEMPERATURE OF 58F, BREAKS
PREVIOUS RECORD OF 54F SET BACK IN 2000**

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JANUARY 31
HIGH 58F IN 1913, 1947, 2013
LOW -12F IN 1920
PRECIP 1.03 INS. IN 1914
SNOWFALL 9.0 INS. IN 1898
PEAK GUST 75 MPH NW IN 1974

RECORDS FOR FEBRUARY 1
HIGH 65F IN 1989
LOW -9F IN 1920
PRECIP 1.30 INS. IN 1898
SNOWFALL 11.0 INS. IN 1898
PEAK GUST 66e MPH SSW IN 1951

TODAY’S REPORT PREPARED BY: Robert Millette

Category: Daily Discussions

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