Wednesday, December 10, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, DECEMBER 10, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
RECORD-BREAKING RAIN DIMINISHES TO DRIZZLE, FOG
AND SHOWERS TODAY
Heavy rain fell for several hours yesterday as a strengthening
Nor’easter came ashore. High winds were observed by mid-day
yesterday with a peak gust of 48 MPH from the ENE at 2:28 PM EST.
As of 10:00 AM EST this morning 3.35 inches of rain had been
collected for this storm, with drizzle and showers continuing
to add to this total. By 1:00 PM EST another 0.16 inches of rain
had fallen, making a new storm total thus far of 3.51 inches
from this latest Nor’Easter.
A calendar day total of 3.23 inches of rain easily beats the
old record for December 9, 1.52 inches, set back in 1956.
This new record also moves into third place on the list of
wettest December calendar days here at Blue Hill:
BHO Wettest December Calendar Days, inches (1885-2014)
1) 3.94 on Dec 12, 1992
2) 3.64 on Dec 26, 1969
3) 3.23 on Dec 9, 2014
4) 3.03 on Dec 17, 1888
5) 2.93 on Dec 17, 1973
6) 2.87 on Dec 17, 2000
7) 2.86 on Dec 5, 1993
8) 2.78 on Dec 6, 2003
Today’s Observations:
7 A.M.
Weather: Thick fog, light drizzle
Temperature: 39F; Dew Point: 39F; Wind: NNE at 15G22 kts
Peak Wind: 25 kts ENE @ 06:07 AM EST
Sea-level pressure: 29.52 ins. Hg, rising unsteadily
Visibility: 1/8 of a mile, obscured by thick fog
6-hr max temp: 44F
6-hr min temp: 39F
24-hr precip: 3.15 in
24-hr snowfall: 0.00
BHO SA 1155 W2 X 1/8L-F 996/39/39/0215G22/952/ PK WND 0125/07/
8//// 51003 ASOS 60005 70333 MANUAL 70315 10044 20039
10 A.M.
Weather: Thick fog, light drizzle
Temperature: 39F; Dew Point: 39F; Wind: NNE at 15G28 kts
Peak Wind: 28 kts ENE @ 09:46 AM EST
Sea-level pressure: 29.52 ins. Hg, about the same
Visibility: 1/4 of a mile, obscured by thick fog
3-hour precip: 0.04 in
3-hour snowfall: 0.00
BHO SA 1455 W2 X 1/4L-F 997/39/39/0215G28/952/ PK WND 0228/46/
8//// 50001 ASOS 60005 MANUAL 60004
1 P.M.
Weather: Light rain, thick fog
Temperature: 39F; Dew Point: 39F; Wind: N at 11 kts
Sea-level pressure: 29.49 ins. Hg, falling rapidly
Visibility: 1/4 of a mile, obscured by thick fog
6-hr max temp: 40F
6-hr min temp: 39F
6-hour precip: 0.16
6-hour snowfall: 0.00
BHO SA 1755 W3 X 1/4R-F 988/39/39/0111/949/ PK WND 0227/58/
8//// 56009 ASOS 60016 MANUAL 60016 10040 20039
SUMMARY FOR TUESDAY, DECEMBER 9, 2014
TEMPERATURE (DEGREES F)
MAX…..48 NORMAL…..41
MIN…..25 NORMAL…..26
MEAN….37 NORMAL…..34
DEPARTURE FROM 30-YEAR NORMAL…………………….+3
TOTAL DEPARTURE FOR THE MONTH…………………….+2 [+0.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..28 DEPARTURE………..-3
TOTAL HEATING UNITS FOR THE MONTH………….267 DEPARTURE………..-2
TOTAL HEATING UNITS FOR THE SEASON………..1426 DEPARTURE………-105
TOTAL HEATING UNITS LAST SEASON TO DATE……1478 DIFFERENCE………-52
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………48 ENE AT 2:38 P.M.
ASOS…………………..53 ENE AT 2:38 P.M.
DAVIS………………….49 NE AT 1:19 P.M. RMY 52
FASTEST MILE FOR YESTERDAY………………..37 ENE AT 2:38 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..37 ENE AT 2:33 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….35 NE AT 2:33 P.M.
AVERAGE WIND SPEED AND DIRECTION………….19.1 ENE
ASOS………………….18.8
DAVIS…………………16.5 NE (052 degrees)
* Last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….3.15 DEPARTURE…..+2.99
ASOS…………..3.33
TOTAL PRECIPITATION FOR THE MONTH……….4.99 DEPARTURE…..+3.51
ASOS…………..5.16
TOTAL PRECIPITATION FOR THE YEAR……….52.75 DEPARTURE…..+2.74
ASOS………….53.35
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………0.00 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE MONTH…………..Trace DEPARTURE……-2.8
TOTAL SNOWFALL FOR THE SEASON……………8.7 DEPARTURE……+3.3
PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
12/1 63/37/50/+13/0.01/0.0/…/.. 28 WNW RMY 31
12/2 37/30/34/-2/0.10/T/000/00 26 E RMY 29
12/3 49/34/42/+6/0.31/0.0/000/00 40 W RMY 43
12/4 41/27/34/-1/…./0.0/…/.. 29 WNW RMY N/A
12/5 42/23/33/-2/…./0.0/…/.. 21 E RMY 22
12/6 43/36/40/+5/…./0.0/000/00 25 NNW RMY N/A
12/7 36/18/27/-7/…./0.0/…/.. 31 N RMY 34
12/8 25/16/21/-13/0.01/T/000/00 24 N RMY N/A
12/9 48/25/37/+3/3.23/0.0/000/00 48 ENE RMY 52
12/10 morning low temp: 39F since midnight; the normal low is now 26F
DAILY RECORDS FOR DECEMBER 2014:
– DAILY PRECIPITATION RECORD FOR DECEMBER 9 2014
Old record of 1.51 inches set in 1952,
replaced with new record of 3.23 inches.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR DECEMBER 10
HIGH 62 IN 1946
LOW -6 IN 1902
PRECIP 1.67 INS. IN 1907
SNOWFALL 6.0 INS. IN 1905
PEAK GUST 66e SW IN 1940
RECORDS FOR DECEMBER 11
HIGH 63 IN 1911
LOW -1 IN 1988
PRECIP 2.36 INS. IN 1992
SNOWFALL 6.0 INS. IN 1894
PEAK GUST 78 S IN 1969
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
