Wednesday, February 19, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, FEBRUARY 19, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

SNOWFALL TOTAL 4.0 INCHES FOR YESTERDAY
MONTHLY TOTAL NOW AT 31.9 INCHES; SEASON AT 80.7 INCHES
SEASON DEPARTURE HITS PLUS 38.7 INCHES!
TOTAL ON GROUND AT 18 INCHES THIS MORNING.

Yesterday’s snowfall totaled 4.0 inches and was on the
side of lower moisture content with 0.32 inch.  The monthly
snowfall total has increased to about 2.5 times normal and the
seasonal total is close to double the normal this far into
the season.

Sunshine this morning have given way to thickening high and
middle clouds and some light snow broke out at 2:47 PM.
Wind have been light today and have backed to light N to
NE around the onset time of precipitation.

Today’s Observations:

7 A.M.
Weather: Scattered cirrus, thin overcast cirrostratus, thin fog
Temperature: 24F; Dew Point: 19F; Wind: SW at 4 kts,
Sea-level pressure: 30.04 ins. Hg, decreasing then more quickly
Visibility: 15 miles, thin fog all quadrants
6-hr min temp: 20F
6-hr max temp: 25F
24-hr precip: 0.32 in.
24-hr snowfall: 4.0 ins.
Snow depth: 19 inches
The snow to water equivalent (SWE) was measured at 3.1 ins. liquid for
19 inches of snow (as requested by NWS)
BHO SA 1155 250 SCT 300 –OVC 15 172/24/19/2304/004/ THN F ALQDS
THN GLZ THIN RIME ICE TOTAL NEW SNW PST 24 HRS 4.0/ 8/007
4/019 58016 ASOS 70038 MANUAL 70032 10025 20020

10 A.M.
Weather: Scattered dense cirrus, broken opaque cirrus, overcast
cirrus partly thin E-S
Temperature: 30F Dew Point: 25F; Wind: SE at 9 kts
Sea-level pressure: 30.02 ins. Hg, decreasing, then more quickly
Visibility: 12 miles
BHO SA 1455 200 SCT E220 BKN 250 OVC 12 165/30/25/1409/002/
DNS CI XCPT OVC PTLY THN E-S/ HAZY ALQDS/ 8/002 58007

1 P.M.
Weather: Overcast altostratus with virga, patches lower altocumulus
Temperature: 34F; Dew Point: 28F; Wind: ESE at 4 kts
Sea-level pressure: 29.92 Hg, decreasing, then more quickly
Visibility: 20 miles, hazy
6-hr max. temp: 35F
6-hr min. temp: 24F
BHO SA 1755 E130 OVC 20 131/34/28/1204/992/ PTCHS LWR AC/VIRGA HAZY/
8/07/ 58034 10035 20024

WEATHER SUMMARY FOR TUESDAY, FEBRUARY 18, 2014

TEMPERATURE (DEGREES F)
MAX…..32    NORMAL…..37
MIN…..12    NORMAL…..20
MEAN….22    NORMAL…..29

DEPARTURE FROM 30-YEAR NORMAL…………………….-7
TOTAL DEPARTURE FOR THE MONTH……………………-36 [-2.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..43  DEPARTURE……….+6
TOTAL HEATING UNITS FOR THE MONTH………….719  DEPARTURE………+35
TOTAL HEATING UNITS FOR THE SEASON………..4236  DEPARTURE………+21
TOTAL HEATING UNITS LAST SEASON TO DATE……3806  DIFFERENCE…….+430

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………27 ESE   AT     2:19 P.M. *
AERO…………………..25 WNW   AT     7:54 P.M.
ASOS…………………..29 ESE   AT     2:20 P.M.
DAVIS………………….26 ESE   AT    10:36 A.M. RMY 28
FASTEST MILE FOR YESTERDAY………………..20 ESE   AT     1:52 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..20 WNW   AT     7:56 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….19 ESE   AT     1:46 P.M.
AVERAGE WIND SPEED AND DIRECTION………… 12.0 ESE
ASOS………………….12.6
DAVIS…………………10.4 E [100 deg.] * last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.32  DEPARTURE………….+0.17
ASOS…………..0.38
TOTAL PRECIPITATION FOR THE MONTH……….4.79  DEPARTURE………….+2.28
ASOS…………..4.94
TOTAL PRECIPITATION FOR THE YEAR………..9.41  DEPARTURE………….+2.55
ASOS…………..9.85

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….4.0  DEPARTURE…………..+3.5
TOTAL SNOWFALL FOR THE MONTH……………31.9  DEPARTURE………….+23.0
TOTAL SNOWFALL FOR THE SEASON…………..80.7  DEPARTURE………….+38.7

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 34/27/31/+3/…./…/…/..          48 W   AERO 51 MPH WNW RMY 49
2/15 34/27/31/+3/…./…/…/..          35 NW  AERO 35 MPH NW  RMY 48
2/16 30/18/24/-4/…./…/…/..          45 NW  AERO 46 MPH NW  RMY N/A
2/17 27/9/18/-10/0.00/0.0/…/..          38 NW  AERO 38 MPH NW  RMY 41
2/18 32/12/22/-7/0.32/4.0/…/..          27 ESE AERO 25 MPH WNW RMY 28

2/19 morning low temp: 20F; the normal low is now 20F

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 19
HIGH 66F IN 1981
LOW -5F IN 1923
PRECIP 2.73 INCHES IN 1972
SNOWFALL 12.0 INCHES IN 1893
PEAK GUST 76 MPH ENE IN 1972

RECORDS FOR FEBRUARY 20
HIGH 66F IN 1930
LOW -4F IN 1966
PRECIP 1.90 INCHES IN 1934
SNOWFALL 15.0 INCHES IN 1921,1934
PEAK GUST 78 MPH NW IN 1972

TODAY’S REPORT PREPARED BY: Robert Skilling