Saturday, February 15, 2014

| February 15, 2014 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, FEBRUARY 15, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

SKIES TURN OVERCAST WITH SNOW BEGINNING AGAIN THIS AFTERNOON

The sky was mostly cloudy with a little bit of sunshine observed early
this morning, but clouds quickly filled in the gaps and by 10:00 A.M. the
sky was overcast.  The morning low temperature was a well above average 27F,
but the temperature has only managed to hover around 31-34F for the late
morning and early afternoon hours.  Yesterday’s average temperature of 30F
was two degrees above average, breaking a streak of ten consecutive days of
at or below average temperatures.  Winds have been very light today,
averaging under 5mph for much of the day.  This is in sharp contrast to
yesterday, when winds gusted to 48mph in the wake of the week’s Nor’easter.

Despite one strong Nor’easter just pulling away, another storm is arriving
today.  The barometer began dropping again late this morning, and light snow
began falling around 12:30 this afternoon, with more expected later today and
tonight.  This will add further to our seasonal snow surplus.  We are 29.1
inches above average for the season so far.

Preliminary Storm Statistics, 2/13-2/14:
Total Snow: 5.4 inches
Total Liquid: 2.05 inches
Peak Gust: 48 mph W
Lowest sea level pressure: 28.84 ins. Hg, the lowest since 12/27/10

Today’s Observations:

7 A.M.
Weather: Broken altocumulus, broken cirrus, few lower altocumulus N-E, few
altocumulus lenticularis ENE
Temperature: 28F; Dew Point: 21F; Wind: Estimated W at 2 kts,
Wind: Light
Sea-level pressure: 29.84 ins. Hg, rising then falling
Visibility: 25 miles, distant haze
6-hr min temp: 27F
24-hr snowfall: 0.2 inches
24-hr precip: 0.01 inches
Snow depth: 12 inches
BHO SA 1155 E110 BKN 250 BKN 25 104/28/21/2602/984/ FEW LWR AC N-E
FEW ACSL ENE DSNT HZ NEW SNW PST 25 HRS 0.2 INS WND LGT/ 8/041
4/012 50012 MANUAL 70001 ASOS 70001 10028 20027

10 A.M.
Weather: Scattered altocumulus, overcast altostratus, Sun dimly visible
Temperature: 33F Dew Point: 23F; Wind: Estimated E at 3 kts,
Wind: Light and variable
Sea-level pressure: 29.85 ins. Hg, rising slightly
Visibility: 30 miles, distant haze
BHO SA 1455 110 SCT E170 OVC 30 110/33/22/1003/985/ SUN DMLY VSBL DSNT HZ
WND LGT AND VRB/ 8/070 50006

1 P.M.
Weather: Light snow, overcast nimbostratus
Temperature: 30F; Dew Point: 25F; Wind: E at 8 kts
Sea-level pressure: 29.77 ins. Hg, falling then falling more rapidly
Visibility: 8 miles
6-hr max. temp: 34F
6-hr min. temp: 28F
6-hr snowfall: Trace
6-hr precip: Trace
BHO SA 1755 E45 OVC 8S- 082/30/25/0908/977/ S-B25/ 8/020 58028 6000/
10034 20028

WEATHER SUMMARY FOR FRIDAY, FEBRUARY 14, 2014

TEMPERATURE (DEGREES F)
MAX…..34    NORMAL…..37
MIN…..26    NORMAL…..19
MEAN….30    NORMAL…..28

DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH……………………-19 [-1.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..35  DEPARTURE……….-2
TOTAL HEATING UNITS FOR THE MONTH………….555  DEPARTURE………+18
TOTAL HEATING UNITS FOR THE SEASON………..4072  DEPARTURE……….+4
TOTAL HEATING UNITS LAST SEASON TO DATE……3660  DIFFERENCE…….+412

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………48  W    AT   12:48 P.M. *
AERO…………………..51  WNW  AT    9:56 A.M.
ASOS…………………..53  W    AT    9:56 A.M.
DAVIS………………….48  WSW  AT   12:47 P.M. RMY 49
FASTEST MILE FOR YESTERDAY………………..37  W    AT   11:12 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..38  W    AT   11:14 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….33  W    AT    1:26 P.M.
AVERAGE WIND SPEED AND DIRECTION………….20.0 W
ASOS………………….18.5
DAVIS…………………16.3 W [277 deg.]
* last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01  DEPARTURE………….-0.13
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….3.76  DEPARTURE………….+1.84
ASOS…………..3.86
TOTAL PRECIPITATION FOR THE YEAR………..8.38  DEPARTURE………….+2.11
ASOS…………..8.77

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.2  DEPARTURE…………..-0.3
TOTAL SNOWFALL FOR THE MONTH……………20.3  DEPARTURE………….+13.4
TOTAL SNOWFALL FOR THE SEASON…………..69.1  DEPARTURE………….+29.1

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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

2/1  45/30/38/+12/0.00/0.0/402/67         24 S   AERO 23 MPH S   RMY 25
2/2  53/33/43/+17/0.00/0.0/181/30         22 S   AERO 21 MPH WNW RMY 21
2/3  36/22/29/+3/0.32/2.8/000/00          22 NNE AERO 18 MPH NNE RMY 21
2/4  33/18/26/0/0.00/0.0/377/62           20 NW  AERO 16 MPH NW  RMY 17
2/5  31/21/26/0/1.32/10.7/000/00          32 ENE AERO 30 MPH ENE RMY 30
2/6  26/15/21/-5/0.02/0.4/398/65          22 WNW AERO 21 MPH WNW RMY 22
2/7  29/13/21/-6/0.00/0.0/615/100         25 W   AERO 23 MPH W   RMY 27
2/8  28/12/20/-7/0.00/0.0/612/99          24 W   AERO 23 MPH W   RMY 23
2/9  28/19/24/-3/0.05/1.0/112/18          21 N   AERO 17 MPH N   RMY 19
2/10 27/14/21/-6/0.00/0.0/617/99          28 NW  AERO 28 MPH NW  RMY 30
2/11 24/8/16/-11/0.00/0.0/625/100         22 WNW AERO 20 MPH WNW RMY 25
2/12 25/2/14/-13/0.00/0.0/…/..          25 NNW AERO 23 MPH NW  RMY 21
2/13 33/19/26/-2/…./…/000/00          46 NE  AERO 51 MPH NE  RMY 51
2/14 34/26/30/+2/…./…/…/..          48 W   AERO 51 MPH WNW RMY 49

2/15 morning low temp: 27F; the normal low is now 19F

DAILY RECORDS FOR FEBRUARY 2014
None so far.

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

RECORDS FOR FEBRUARY 15
HIGH 60F IN 1954
LOW -18F IN 1943
PRECIP 1.28 INCHES IN 1950
SNOWFALL 11.2 INCHES IN 1940
PEAK GUST 94e MPH WNW IN 1946

RECORDS FOR FEBRUARY 16
HIGH 62F IN 1954
LOW -16F IN 1943
PRECIP 1.91 INCHES IN 1958
SNOWFALL 18.6 INCHES IN 1958
PEAK GUST 78 MPH W IN 1967

TODAY’S REPORT PREPARED BY: Jonathan O’Brien

Category: Daily Discussions

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