Friday, November 14, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, NOVEMBER 14, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

A RECORD TYING SNOWFALL FOR THE DATE OF 3.5 INCHES

EARLY MORNING SNOWFALL REACHES 3.5 INCHES AT SUMMIT
EQUALS A 1997 RECORD FOR THIS DATE, ALSO 3.5 INCHES…
A GREATER SNOWFALL OF 8.1 WAS RECORDED NOVEMBER 12,
BACK IN 1987.

The precipitation began as a mixture of rain and snow in the couple hours
before midnight last night and changed to all snow (accumulating) between
midnight and 1 A.M. A daily record equaling 3.5 inches was measured on the
snow boards at 7 A.M. (snow ended at 6:45 A.M.)

Snow accumulated very little on rocks and blacktop areas but was very
sticky clinging to everything including the trees making the summit appear
as a white “winter-wonderland”. There was a 1.5-inch high collar of snow
on the opening of the standard and recording 8-inch gauges.

The temperatures dropped to 31.2 degrees during the snowfall and had
risen to 31.8 degrees by 7 A.M.

Temperatures had only risen to near 40 degrees by early this afternoon
with partly sunny skies and a chill NW wind gusting to 20 to 25 MPH.
Only about a patchy inch of the 3.5 inches which fell early today
remains this afternoon.

Today’s Observations:

7 A.M.
Weather: Obscurement, heavy fog, snow ended at 6:45 A.M.
Total new snow accumulation: 3.5 inches
Temperature: 32F; Dew Point: 32F; Wind: NW at 7 kts
Sea-level pressure: 29.90 ins. Hg, falling slightly
Visibility: 1/16 mile, heavy fog, snow ended at 45 past hour
6-hr max temp: 32F
6-hr min temp: 31F
24-hr precip: 0.00 inches
24-hr snowfall: 3.5 ins.
BHO SA 1155 W2 X 1/16F 126/32/32/3207/990/ SE45 TOTAL NEW
SNOW 3.5 INS./ 8//// 4/004 56005 ASOS 60023 MANUAL 6//// ASOS
70034 MANUAL 70037 10032 20031

10 A.M.
Weather: Scattered stratocumulus, scattered altocumulus lenticularis and
some cirrus distant SE-S
Temperature: 36F; Dew Point: 33F; Wind: NNW at 10G17 kts,
Wind: Direction variable W-N
Sea-level pressure: 29.92 ins. Hg, rising slightly
Visibility: 40 miles except 55 miles WNW, 25 NE, light distant haze, fog
BHO SA 1455 15 SCT 70 SCT 250 SCT 40 131/36/33/3310G17/992/
FEW ACSL/CI DSNT SE-S VSBY NE 25 WNW 55 WND 27V36/ 8/541 53005

Weather: Scattered cumulus, stratocumulus moderate cumuloform tops,
broken altocumulus generated by cumulus
Temperature: 37F; Dew Point: 28F; Wind: NW at 12 kts
Sea-level pressure: 29.91 ins. Hg, falling slightly
Visibility: 70 miles, light distant haze
6-hr max temp: 40F
6-hr min temp: 33F
6-hr precip: 0.00 inches
BHO SA 1755 40 SCT E75 BKN 70 127/37/28/3112/991/
SC MDT CUFRM TOPS ACCU/ 8/460 58004 10040 20032

SUMMARY FOR THURSDAY, NOVEMBER 13, 2014

TEMPERATURE (DEGREES F)
MAX…..49   NORMAL…..51
MIN…..32   NORMAL…..34
MEAN….41   NORMAL…..43

DEPARTURE FROM 30-YEAR NORMAL…………………….-2
TOTAL DEPARTURE FOR THE MONTH……………………+15 [+1.0 DEGREE/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..24  DEPARTURE………..+2
TOTAL HEATING UNITS FOR THE MONTH………….251  DEPARTURE……….-15
TOTAL HEATING UNITS FOR THE SEASON…………673  DEPARTURE………-156
TOTAL HEATING UNITS LAST SEASON TO DATE…….756  DIFFERENCE………-83

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………21 NW  AT  3:05 A.M. *
ASOS…………………..24 NW  AT  3:06 A.M.
DAVIS………………….22 WNW AT 12:53 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………..19 NW  AT 12:54 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..20 NW  AT 12:53 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….19 NW  AT 12:55 A.M.
AVERAGE WIND SPEED AND DIRECTION………….8.4 NW
ASOS………………….8.7
DAVIS…………………7.2 NW (310 degrees)
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.37  DEPARTURE……..+0.21
ASOS…………..0.34
TOTAL PRECIPITATION FOR THE MONTH……….2.03  DEPARTURE……..-0.01
ASOS…………..2.03
TOTAL PRECIPITATION FOR THE YEAR……….43.58  DEPARTURE……..-2.23
ASOS………….43.90

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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

11/1  45/36/41/-5/0.79/0.0/000/00              35 NNE RMY N/A
11/2  37/32/35/-11/0.29/1.8/000/00             46 NW  RMY 49
11/3  50/30/45/-6/0.00/0.0/584/95              39 WNW RMY 43
11/4  61/44/53/+8/0.00/0.0/208/34              28 SSW RMY 32
11/5  66/50/58/+13/0.00/0.0/006/01             29 SSW RMY N/A
11/6  52/45/49/+4/0.58/0.0/000/00              23 NE  RMY 24
11/7  46/34/40/-5/0.00/0.0/079/13              39 NW  RMY 42
11/8  47/30/39/-5/0.00/0.0/555/92              24 W   RMY 25
11/9  56/38/47/+3/0.00/0.0/…/..              23 SSW RMY N/A
11/10 58/40/49/+5/0.00/0.0/…/..              17 S   RMY 20
11/11 61/43/52/+9/0.00/0.0/…/..              22 S   RMY 25
11/12 59/40/50/+7/0.00/0.0/…/..              22 W   RMY 25
11/13 49/32/41/-2/0.08/T/…/..                21 NW  RMY N/A

11/14 morning low temp: 31F since midnight; normal low now 34F

DAILY RECORDS FOR NOVEMBER 2014:
11/2 –  A NEW RECORD DAILY SNOWFALL 1.8 INCHES;
surpasses the previous record of 0.2 ins. in 1906, 1951
11/14 – DAILY SNOWFALL RECORD EQUALED, 3.5 INS.;
also this date in 1997

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

RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 2.08 INCHES IN 2009
SNOWFALL 3.5 IN 1997, 2014
PEAK GUST 63 W IN 2003

RECORDS FOR NOVEMBER 15
HIGH 74 IN 1993
LOW 15 IN 1933
PRECIP 1.66 INCHES IN 1981
SNOWFALL 4.0 IN 1967
PEAK GUST 65 SSE IN 2008

TODAY’S REPORT PREPARED BY: Robert Skilling