Friday, January 24, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JANUARY 24, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

ANOTHER CHILLY START TO THE DAY WITH A MORNING LOW
OF 3 ABOVE AND A SECOND CONSECUTIVE DAY OF ABUNDANT
SUNSHINE

Nearly cloudless skies overhead have prevailed so far today with
temperatures sitting well below normal after two consecutive days
of -16 (Wednesday) and -15 degree (Thursday) departures.

Since Tuesday’s snowfall the combination of cold temperatures and
stiff north and westerly winds have kept wind chills suppressed in
the negative teens.

Eight inches of snow remained on the ground this morning at 0700 AM.

Today’s Observations:

7 A.M.
Weather: Clear, stratocumulus layer distant offshore NE-SSW,
few altostratus lenticularis WNW and NNW
Temperature: 3F; Dew Point: -8F; Wind: WNW at 10G16 kts
Sea-level pressure: 30.022 ins. Hg, rising then more quickly
Visibility: 60 miles
6-hr. min temp: 2F
Total snow depth on ground: 8 inches
BHO SA 1155 CLR 60 234/3/-8/2910G16/022/ FEW SC DSNT OFFSHR NE-SSW
FEW ACSL WNW AND NNW/ 8/540 4/008 53018 10006 20002

10 A.M.
Weather: Clear, stratocumulus layer distant offshore NE-SSW
Temperature: 9F Dew Point: -8F; Wind: W at 10G19 kts,
Sea-level pressure: 30.25 ins. Hg, rising then steady
Visibility: 60 miles
BHO SA 1455 CLR 60 244/9/-8/2810G19/025/ FEW SC DSNT OFFSHR NE-SSW/
8/500 51010

1 P.M.
Weather: Clear, stratocumulus layer distant offshore NE-SSW
Temperature: 14F; Dew Point: -9F; Wind: W at 9G17 kts,
Sea-level pressure: 30.19 ins. Hg, steady, then decreasing
Visibility: 70 miles
6-hr max. temp: 14F
6-hr min. temp: 2F
BHO SA 1755 CLR 70 223/14/-9/2709G17/019/ FEW SC DSNT OFFSHR NE-SSE/
8/500 58021 10014 20002

WEATHER SUMMARY FOR THURSDAY, JANUARY 23, 2014

TEMPERATURE (DEGREES F)
MAX…..20    NORMAL…..34
MIN…..-1    NORMAL…..17
MEAN….10    NORMAL…..25

DEPARTURE FROM 30-YEAR NORMAL…………………..-15
TOTAL DEPARTURE FOR THE MONTH…………………..+27 [+1.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..55  DEPARTURE………+15
TOTAL HEATING UNITS FOR THE MONTH………….882  DEPARTURE………-27
TOTAL HEATING UNITS FOR THE SEASON………..3159  DEPARTURE………-54
TOTAL HEATING UNITS LAST SEASON TO DATE……2805  DIFFERENCE…….+354

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………30 W   AT   6:03 P.M.
AERO…………………..29 W   AT   6:28 P.M.
ASOS…………………..32 W   AT   6:33 P.M.
DAVIS………………….28 W   AT   6:32 P.M.  RMY 30
FASTEST MILE FOR YESTERDAY………………..22 W   AT   6:30 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..24 W   AT   6:03 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….21 W   AT   6:03 P.M.
AVERAGE WIND SPEED AND DIRECTION…………12.6 W
ASOS…………………12.8
DAVIS………………..11.2 W [283 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……….4.58  DEPARTURE………….+1.32
ASOS…………..4.87
TOTAL PRECIPITATION FOR THE YEAR………..4.56  DEPARTURE………….+1.32
ASOS…………..4.78

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……. 0.0    DEPARTURE…………..-0.5
TOTAL SNOWFALL FOR THE MONTH………….32.7    DEPARTURE………….+19.9
TOTAL SNOWFALL FOR THE SEASON…………48.4    DEPARTURE………….+19.6

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/+17/0.04/0.0/292/52         41 W   AERO 44 MPH W   RMY 42
1/13 50/30/40/+15/0.00/0.0/473/84         33 S   AERO 36 MPH S   RMY 37
1/14 49/41/45/+20/0.83/0.0/000/00         35 S   AERO 37 MPH S   RMY 32
1/15 46/33/40/+15/0.00/0.0/374/66         24 W   AERO 23 MPH W   RMY N/A
1/16 40/34/37/+12/0.00/0.0/000/00         14 ENE AERO 13 MPH ENE RMY 14
1/17 44/33/39/+14/0.00/0.0/541/95         21 SW  AERO 21 MPH SW  RMY 22
1/18 37/30/34/+9/0.82/4.2/000/00          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 39/23/31/+6/0.00/0.0/…/..          38 W   AERO 41 MPH W   RMY 42
1/21 23/8/16/-9/…./…/…/..           29 WNW AERO 30 MPH WNW RMY 32
1/22 15/3/9/-16/…./…/…/..           36 N   AERO 35 MPH N   RMY 34
1/23 20/-1/10/-15/0.00/0.0/…/..         30 W   AERO 29 MPH W   RMY 30

1/24 morning low temp: 2F; 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 24
HIGH 60F IN 1967
LOW -12F IN 1907
PRECIP 2.04 INS. IN 1998
SNOWFALL 11.3 INS. IN 1935
PEAK GUST 82 MPH S IN 1996

RECORDS FOR JANUARY 25
HIGH 56F IN 2010
LOW -10F IN 1935
PRECIP 2.24 INS. IN 1979
SNOWFALL 12.5 INS. IN 1941
PEAK GUST 81 MPH WNW IN 1972

TODAY’S REPORT PREPARED BY: Brian Fitzgerald