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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, FEBRUARY 21, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
A SUNNY AND WARM THURSDAY GIVES WAY TO THICK FOG AND DRIZZLE
FOR FRIDAY.
Yesterday’s maximum temperature of 48F marks the warmest
temperature since February 2nd’s maximum of 53F, which
is also the last time the daily departure has been in the
double-digits above normal. Even with a strengthening
February sun our average temperature for this date in history
is 29F.
Beginning last even a brief period of ice pellets fell, only
adding a trace of frozen precipitation before changing to all
rain. By 7:00 AM this morning 0.17 inches of liquid had be
collected.
Thick fog has remained in place today with visibilities
ranging from 1/4 to 1/8 of a mile with drizzle for most of
the morning. Snow pack by 7:00 AM this morning was significantly
reduced from 19 inches yesterday to 13 inches at observation
time this morning.
Today’s Observations:
7 A.M.
Weather: Moderate drizzle, fog
Temperature: 35F; Dew Point: 35F; Wind: E at 10 kts,
Sea-level pressure: 30.09 ins. Hg, decreasing, then increasing
Visibility: 1/4 of a mile, fog
6-hr min temp: 35F
6-hr max temp: 33F
24-hr precip: 0.17 in.
24-hr snowfall: Trace, fell as ice pellets
Snow depth: 13 inches
BHO SA 1155 W4 OVC 1/4LF 191/35/35/0910/009/ RWE40
NEW SNW PST 24 HRS TRACE/ 8//// 4/013 53004
ASOS 60002 70016 MANUAL 70017 10035 20033
10 A.M.
Weather: Light drizzle, thick fog
Temperature: 36F Dew Point: 36F; Wind: E at 12G20 kts
Sea-level pressure: 30.03 ins. Hg, decreasing, then more slowly
Visibility: 1/8 of a mile, thick fog
BHO SA 1455 W4 OVC 1/8L-F 171/36/36/0912G20/003/
8//// 56020 ASOS 60002
1 P.M.
Weather: Thick Fog
Temperature: 38F; Dew Point: 38F; Wind: E at 8 kts
Sea-level pressure: 29.91 Hg, falling, then more quickly
Visibility: 1/16 of a mile, thick fog
6-hr max. temp: 38F
6-hr min. temp: 35F
BHO SA 1755 W3 OVC 1/16F 130/38/38/0808/991/ LE1640/
8//// 58041 ASOS 60004 MANUAL 60002 10038 20035
WEATHER SUMMARY FOR THURSDAY, FEBRUARY 20, 2014
TEMPERATURE (DEGREES F)
MAX…..48 NORMAL…..38
MIN…..30 NORMAL…..20
MEAN….39 NORMAL…..29
DEPARTURE FROM 30-YEAR NORMAL……………………+10
TOTAL DEPARTURE FOR THE MONTH……………………-27 [-1.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..26 DEPARTURE……….-3
TOTAL HEATING UNITS FOR THE MONTH………….782 DEPARTURE……….25
TOTAL HEATING UNITS FOR THE SEASON………..4299 DEPARTURE………+12
TOTAL HEATING UNITS LAST SEASON TO DATE……3871 DIFFERENCE…….+428
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………26 WNW AT 2:03 A.M. *
AERO…………………..28 W AT 1:33 A.M.
ASOS…………………..31 WNW AT 1:35 A.M.
DAVIS………………….26 W AT 2:12 A.M. RMY 26
FASTEST MILE FOR YESTERDAY………………..20 WNW AT 2:02 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..22 WNW AT 2:04 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….18 SSW AT 8:32 P.M.
AVERAGE WIND SPEED AND DIRECTION………… 11.0 W
ASOS………………….11.6
DAVIS…………………9.6 WSW [246 deg.]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.17 DEPARTURE………….+0.02
ASOS…………..0.16
TOTAL PRECIPITATION FOR THE MONTH……….5.21 DEPARTURE………….+2.40
ASOS…………..5.35
TOTAL PRECIPITATION FOR THE YEAR………..9.83 DEPARTURE………….+2.67
ASOS…………..10.26
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..TRACE DEPARTURE…………..-0.5
TOTAL SNOWFALL FOR THE MONTH……………32.0 DEPARTURE………….+22.1
TOTAL SNOWFALL FOR THE SEASON…………..80.8 DEPARTURE………….+37.8
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 35/20/28/-1/0.25/0.1/…/.. 21 W AERO 20 MPH ESE RMY 26
2/20 48/30/39/+10/…./…/…/.. 26 WNW AERO 28 MPH W RMY 26
2/21 morning low temp: 33F; 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 21
HIGH 62F IN 1930
LOW -6F IN 1950
PRECIP 2.42 INCHES IN 1898
SNOWFALL 9.0 INCHES IN 1929
PEAK GUST 72 MPH WNW IN 1967
RECORDS FOR FEBRUARY 22
HIGH 63F IN 1997
LOW -1F IN 1918
PRECIP 1.38 INCHES IN 1900
SNOWFALL 8.0 INCHES IN 1893
PEAK GUST 74 MPH S IN 1974
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
