Saturday, January 30, 2016

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JANUARY 30, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

CLOUDS MOVE IN AS TEMPERATURES RISE

The morning low temperature was 25 degrees since midnight
and high through early afternoon 36 which is pretty seasonable
for this time of year.

Clear skies gave way to clouds later in the morning and  temps reached
towards the upper 30’s and lower 40’s.  Very little snow remains on the ground
and none is seen in the foreseeable future to replace it as it melts.

Today’s Observations:

7 A.M.
Weather: Few Stratocumulus and cumulus E-SE
Temperature: 26F; Dew Point: 19F; Wind: WNW at 11 kts,
Sea-level pressure: 29.95 ins. Hg, increasing then more rapidly
Visibility: 50 miles,
6-hr Max temp: 30F
6-hr Min temp: 27F
24-hr precip: none
24-hr snowfall: none
Snow depth: TRACE(snow cover patchy)
BHO SA 1155 CLR 50 143/26/19/2911/995/ FEW SC/CU E-SE LGT DSNT HZ/
8/800 53046 10030 20027

10 A.M.
Weather: Scattered Altocumulus, Scattered Cirrus
Temperature: 33F; Dew Point: 21F; Wind: W at 9 kts,
Sea-level pressure: 30.02 ins. Hg, increasing then more slowly
Visibility: 50 miles
BHO SA 1455 85 SCT 150 SCT 50 166/33/21/2609/002/ LGT DSNT HZ/
8/032 51023

1 P.M.
Weather: Broken Altostratus, Broken Cirrus
Temperature: 39F; Dew Point: 19F; Wind: SW at 8 kts,
Sea-level pressure: 30.00 ins. Hg, falling then increasing but lower
Visibility: 50 miles
6-hr Max temp: 39F
6-hr Min temp: 26F
BHO SA 1755 E85 BKN 220 BKN 158/39/19/2308/000/ LGT DSNT HZ/
8/012 55008 10039 20026

SUMMARY FOR FRIDAY, JANUARY 29, 2016

TEMPERATURE (DEGREES F)
MAX…..39   NORMAL…..34
MIN…..32   NORMAL…..17
MEAN….36   NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL……………………+11
TOTAL DEPARTURE FOR THE MONTH…………………..+113 [+3.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..29   DEPARTURE………-11
TOTAL HEATING UNITS FOR THE MONTH…………1036   DEPARTURE……..-111
TOTAL HEATING UNITS FOR THE SEASON………..2692   DEPARTURE……..-760
TOTAL HEATING UNITS LAST SEASON TO DATE……3256   DIFFERENCE…….-564

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 NW   AT    4:08 P.M.
ASOS……………………23 NW   AT    7:45 P.M.
DAVIS…………………..22 NW   AT    8:11 P.M. RMY 28
FASTEST MILE FOR YESTERDAY…………………16 NW   AT    8:45 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………16 NW   AT    8:46 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..15 NW   AT    8:46 P.M.
AVERAGE WIND SPEED AND DIRECTION……………8.5 NW
ASOS……………………8.5
DAVIS…………………..7.6 NW [304 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……-0.31
ASOS…………..3.94
TOTAL PRECIPITATION FOR THE YEAR………..3.77  DEPARTURE……-0.31
ASOS…………..3.94

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE…….-0.6
TOTAL SNOWFALL FOR THE MONTH……………14.3  DEPARTURE…….-1.8
TOTAL SNOWFALL FOR THE SEASON…………..15.6  DEPARTURE……-16.5

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 morning low since midnight 25F; 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 30
HIGH 60F IN 1914
LOW -8F IN 1948
PRECIP 1.12 INS. IN 1925
SNOWFALL 6.5 INS. IN 1986
PEAK GUST 76 MPH WNW IN 1962

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

TODAY’S REPORT PREPARED BY: Robert Millette