Thursday, January 2, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JANUARY 2, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

SNOW, BLOWING SNOW, FOG AND FALLING TEMPERATURES ABOUND.

Beginning just past midnight, snow has fallen lightly to moderately
throughout the day, with gusty winds and drifting/blowing snow. As of 1300E
3.1 inches of snow had accumulated, with a foot or more expected along
with bitterly cold temperatures.

THE PRELIMINARY DECEMBER 2013 STATS

TEMPERATURE: Deg. F
Av. Max. 38.0
Av. Min. 23.7
Mean     30.9 [-0.4] 24-hr. corrected mean: 30.7
Max. temp: 63F on 22nd
Min. temp: 7F  on 17th
Total heating degree day units: 1053 [+10] Total seasonal heating units:   2277 [-28 less than average] [Season starts 7/1 ] Seasonal total this date 2012:  2028 [249 more than last season]

PRECIPITATION: Inches
Total: 5.27 [+0.38] Greatest in 24 hours: 1.43 (14-15th)
Total snowfall: 15.5 [+2.1] *
Greatest in 24 hours: 6.8 inches (14-15th)
* 1981-2010 average 13.4

WIND
Av. speed (uncorrected): 11.9 mph
Av. speed (corrected): 12.3 mph
Prevailing direction: W 15%

SUNSHINE
Yet to be determined
Available next few days

Today’s Observations:

7 A.M.
Weather: Light snow and fog
Temperature: 18F; Dew Point: 15F; Wind: NNE at 13G19 kts
Sea-level pressure: 30.27 ins. Hg, steady, then decreasing
Visibility: 1 mile
6-hr. min temp: 16F
24-hour precipitation: 0.06 inch
24-hour snowfall: 0.9 inch
Snow on ground: 1 inch
BHO SA 1155 –X E15 OVC 1S-F 249/18/15/0213G19/027/ SF3 TOTAL NEW SNW PST 24
HRS 0.9 THN GL/RIME 8/02/ 4/001 58015 ASOS 60006 ASOS 70006 MANUAL 6006/
MANUAL 70006 10019 20016

10 A.M.
Weather: Light snow, fog and drifting snow
Temperature: 23F; Dew Point: 22F; Wind: NE at 10G22 kts,
Sea-level pressure: 30.22 ins. Hg, falling, then more quickly
Visibility: 3/4 of a mile
3-hour precipitation: N/A
3-hour snowfall: 0.7 inch
BHO SA 1455 W5 X 3/4S-F 235/23/22/0510G22/022/ VSBY SSW 1
MDT SNW PST HR TOTAL NEW SNW PST 3 HRS 0.7 IN/
8//// 58015 ASOS 60010

1 P.M.
Weather: Light to moderate snow, fog and drifting snow
Temperature: 24F; Dew Point: 18F; Wind: ENE at 17G28 kts
Sea-level pressure: 30.08 ins. Hg, falling, then more slowly
Visibility: 1 mile
6-hr max. temp: 24F
6-hr precipitation: 0.23 inch
6-hour snowfall: 2.2 inches
Snow on ground: N/A
BHO SA 1755 W5 X 1S-F 186/24/18/0617G28/008/ MDT SNW PST HR TOTAL NEW SNW
PAST 6 HRS 2.2 STORM TOTAL 3.1 PK WND 0431/07/ 8//// 56049 ASOS 60024 MANUAL
6023/ 10024 20018

WEATHER SUMMARY FOR WEDNESDAY, JANUARY 1, 2014

TEMPERATURE (DEGREES F)
MAX…..26    NORMAL…..35
MIN…..16    NORMAL…..19
MEAN….21    NORMAL…..27

DEPARTURE FROM 30-YEAR NORMAL…………………..-6
TOTAL DEPARTURE FOR THE MONTH…………………..-6 [-6.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..44  DEPARTURE…….. +6
TOTAL HEATING UNITS FOR THE MONTH…………..44  DEPARTURE………+6
TOTAL HEATING UNITS FOR THE SEASON………..2321  DEPARTURE……..-22
TOTAL HEATING UNITS LAST SEASON TO DATE……2066  DIFFERENCE……+255

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………25 W  AT 13:07 P.M.*
AERO…………………..25 W  AT 13:07 P.M.*
ASOS…………………..26 W  AT 13:08 P.M.
DAVIS………………….25 W  AT 13:07 P.M. RMY 27
FASTEST MILE FOR YESTERDAY………………..21 W  AT 13:08 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..21 W  AT 13:08 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….19 W  AT 12:11 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.3 W
ASOS…………………..11.2
DAVIS………………….9.6  W [280 deg.] *LAST OF SEVERAL OCCURRENCES

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.06  DEPARTURE………….-0.09
ASOS…………..0.07
TOTAL PRECIPITATION FOR THE MONTH……….0.06  DEPARTURE………….-0.09
ASOS…………..0.07
TOTAL PRECIPITATION FOR THE YEAR………..0.06  DEPARTURE………….-0.09
ASOS…………..0.07

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…….0.9     DEPARTURE………….+0.3
TOTAL SNOWFALL FOR THE MONTH………….0.9     DEPARTURE………….+0.3
TOTAL SNOWFALL FOR THE SEASON………..16.8     DEPARTURE………….+0.1

PRELIMINARY CLIMATE SUMMARY FOR DECEMBER 2013 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

12/1  45/30/38/+1/0.28/T/000/00           22 SSE AERO 23 MPH SSE RMY 23
12/2  38/34/36/0/T/0.0/000/00             15 NW  AERO 15 MPH NW  RMY 16
12/3  45/32/39/+3/0.00/0.0/284/51         18 NNW AERO 18 MPH NNW RMY 20
12/4  43/29/36/+1/0.00/0.0/389/70         21 WNW AERO 21 MPH WNW RMY 21
12/5  53/38/46/+11/0.02/0.0/000/00        36 S   AERO 40 MPH S   RMY 39
12/6  55/33/44/+9/0.38/T/000/00           25 SSW AERO 28 MPH SSW RMY N/A
12/7  40/26/33/-1/0.12/T/287/52           23 NW  AERO 25 MPH NW  RMY N/A
12/8  30/22/26/-8/T/T/039/07              25 NW  AERO 27 MPH NW  RMY N/A
12/9  41/25/33/-1/0.35/0.6/000/00         28 E   AERO 28 MPH E   RMY 24
12/10 33/21/27/-6/0.14/2.1/000/00         28 W   AERO 28 MPH W   RMY 28
12/11 28/19/24/-9/0.00/0.0/345/63         27 SW  AERO 28 MPH SW  RMY 27
12/12 23/14/19/-14/0.00/0.0/542/99        28 WNW AERO 31 MPH NW  RMY 30
12/13 28/14/21/-11/0.00/0.0/405/74        31 W   AERO 32 MPH W   RMY 33
12/14 28/9/19/-13/0.45/4.8/000/00         30 E   AERO 26 MPH E   RMY N/A
12/15 36/21/29/-3/0.98/2.0/000/00         48 NE  AERO 50 MPH NE  RMY 51
12/16 27/14/21/-10/0.00/0.0/529/97        36 W   AERO 37 MPH W   RMY N/A
12/17 23/7/15/-16/0.53/5.5/104/19         28 N   AERO 30 MPH N   RMY 28
12/18 32/15/24/-7/0.00/0.0/436/80         29 WNW AERO 30 MPH NW  RMY 29
12/19 42/22/32/+2/0.00/0.0/425/78         38 SW  AERO 44 MPH SW  RMY 42
12/20 52/34/43/+13/0.00/0.0/332/61        26 SSW AERO 29 MPH SSW RMY 29
12/21 58/42/50/+20/0.00/0.0/082/15        28 SSW AERO 29 MPH SSW RMY 30
12/22 63/35/49/+20/0.01/0.0/000/00        37 SW  AERO 41 MPH SW  RMY 41
12/23 37/32/35/+6/0.73/0.0/000/00         24 NW  AERO 25 MPH NW  RMY 25
12/24 36/25/31/+2/T/T/142/26              25 NW  AERO
12/25 25/13/19/-9/0.00/0.0/480/88         29 NW  AERO 30 MPH WNW RMY 30
12/26 35/19/27/-1/0.05/0.5/000/00         24 W   AERO 25 MPH W   RMY 25
12/27 32/22/27/-1/0.00/0.0/344/63         25 W   AERO 25 MPH W   RMY 26
12/28 46/25/36/+8/0.00/0.0/300/55         30 WSW AERO 32 MPH SW  RMY 32
12/29 42/34/38/+11/1.23/0.0/000/00        36 NNE AERO 37 MPH NNE RMY 38
12/30 39/17/28/+1/0.00/0.0/…/..         38 W   AERO 39 MPH W   RMY 36
12/31 24/11/19/-9/0.00/0.0/…/..         30 W   AERO 31 MPH W   RMY 30

1/1   26/16/21/-6/0.00/0.0/000/00         25 W   AERO 25 MPH W   EMY 27

DAILY RECORDS FOR DECEMBER 2013
12/22- NEW DAILY RECORD MAXIMUM TEMPERATURE OF 63F;
surpasses previous record of 62F set in 1994

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

RECORDS FOR JANUARY 2
HIGH 62F IN 1890
LOW -7F IN 1899,1918
PRECIP 2.10 INS. IN 1987
SNOWFALL 9.0 INS. IN 1904
PEAK GUST 85e MPH S IN 1942

RECORDS FOR JANUARY 3
HIGH 64F IN 2000
LOW -4F IN 1904
PRECIP 1.93 INS. IN 1999
SNOW 11.3 INS. 1996
PEAK GUST 92 MPH S IN 1960

TODAY’S REPORT PREPARED BY: Brian Fitzgerald and Robert Skilling