Sunday, February 25, 2018
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 25, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME
LIGHT MIXED PRECIPITATION FALLS THROUGHOUT THE DAY
Overcast clouds, distant fog and light precipitation
started before the 7 AM observation and continued
throughout the day. Visibility fluctuated at times
as the precipitation decreased or increased at times.
0.06 inches if precipitation had fallen by 7 AM, with a
storm total of .37 by the 1 o’clock observation.
Temperatures dropped overnight and remained seasonable
throughout the day with high humidities. Winds had
diminished during the morning, but picked back up in
the afternoon after slowly shifting the East Southeast.
Today’s Observations:
7 A.M.
Weather: Overcast Nimbostratus, Few Stratus Fractus
Temperature: 34F; Dew Point: 34F; Wind: E at 18G19 kts
Sea-level pressure: 30.25 ins. Hg, rising then falling
Visibility: 10 miles
6-hr Max temp: 36F
6-hr Min temp: 34F
24-hr precip: 0.06 ins.
24-hr snowfall: TRACE
Snow depth: 0 ins.
BHO SA 1155 E60 OVC 10 245/34/34/0812G19/025/
NEW SNW PST 24 HRS TRACE FEW STRFRA ALQDS DST FG ALQDS/
8/72/ 50000 MANUAL 70006 ASOS 70006 10036 20034
10 A.M.
Weather: Overcast Nimbostratus
Temperature: 35F; Dew Point: 35F; Wind: ESE at 11G21 kts,
Sea-level pressure: 30.20 ins. Hg, falling then more rapidly
Visibility: 5 miles
3-hr precip: 0.08
3-hr snowfall: TRACE
BHO SA 1455 W4 X 5 228/35/35/1110G21/020/ DSNT FG ALQDS/ 8/////
56017
1 P.M.
Weather: Overcast Nimbostratus
Temperature: 36F; Dew Point: 36F; Wind: ESE at 11G16 kts,
Wind: Peak gust ESE 26 kts at 12:55 PM
Sea-level pressure: 30. ins. Hg, falling, then more rapidly
Visibility: 5 miles
6-hr Max temp: 36F
6-hr Min temp: 34F
6-hr precip: 0.31 ins.
6-hr snowfall: Trace
Snow depth: 0 ins.
BHO SA 1755 W4 X 5 182/36/36/1116G26/006/ DSNT FG ALQDS/
8///// 56046 10036 20034
SUMMARY FOR SATURDAY, FEBRUARY 24, 2018
TEMPERATURE (DEGREES F)
MAX…..54 NORMAL…..39
MIN…..35 NORMAL…..21
MEAN….45 NORMAL…..30
DEPARTURE FROM 30-YEAR NORMAL………………………+15
TOTAL DEPARTURE FOR THE MONTH……………………..+190 [+7.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY………….20 DEPARTURE………-15
TOTAL HEATING UNITS FOR THE MONTH…………707 DEPARTURE……..-192
TOTAL HEATING UNITS FOR THE SEASON……….4028 DEPARTURE……..-386
TOTAL HEATING UNITS LAST SEASON TO DATE…..3789 DIFFERENCE…….+219
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….32 W AT 6:42 A.M.
AERO……………………30 W AT 6:40 A.M.
ASOS……………………32 W AT 6:42 A.M.
DAVIS…………………..28 M AT 6:37 A.M ** RMY 29
FASTEST MILE FOR YESTERDAY…………………16 W AT 6:42 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………17 W AT 6:43 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..20 M AT 6:42 A.M.**
AVERAGE WIND SPEED AND DIRECTION…………..11.8 WNW
ASOS…………………..11.6
DAVIS………………….10.4 **
** Davis direction malfunctioning
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.06 DEPARTURE……-0.10
ASOS…………..0.06
TOTAL PRECIPITATION FOR THE MONTH……….3.61 DEPARTURE……+0.19
ASOS…………..3.74
TOTAL PRECIPITATION FOR THE YEAR………..9.61 DEPARTURE……+1.84
ASOS………….10.32
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………..T DEPARTURE……..-0.5
TOTAL SNOWFALL FOR THE MONTH……………10.2 DEPARTURE……..-1.8
TOTAL SNOWFALL FOR THE SEASON…………..44.7 DEPARTURE……..-0.5
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system 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
M: Missing data
2/1 45/27/36/+10/…./0.0/120/20 36 SSW AERO 35 SSW RMY N/A
2/2 34/08/21/-5/…./2.5/223/37 43 WNW AERO 46 WNW RMY 46
2/3 25/04/15/-11/0.00/0.0/557/92 26 S AERO 24 S RMY 30
2/4 45/23/34/+8/…/T/000/00 31 SSE AERO 29 S RMY 30
2/5 46/19/33/+7/0.00/0.0/464/76 47 WNW AERO 47 WNW RMY 44
2/6 31/17/24/+2/T/T/025/04 26 SSW AERO 23 SSW RMY 23
2/7 42/21/32/+5/0.62/1.1/000/00 45 SW AERO 46 SW RMY 47
2/8 30/20/25/-2/0.00/0.0/501/81 38 WNW AERO 38 WNW RMY N/A
2/9 30/16/23/-4/0.00/0.0/384/62 28 S AERO 25 S RMY N/A
2/10 51/28/40/+13/…./0.0/…/.. 31 S AERO 30 S RMY 31
2/11 46/36/41/+14/…./0.0/000/00 24 SW AERO 21 SW RMY N/A
2/12 53/27/40/+13/…./0.0/…/.. 33 WNW AERO 33 WNW RMY N/A
2/13 31/21/26/-2/0.00/0.0/…/.. 22 S AERO 18 WNW RMY 21
2/14 46/25/36/+8/0.00/0.0/…/.. 30 S AERO 26 SSW RMY 29
2/15 47/35/41/+13/…./0.0/000/00 23 SSW AERO 20 SSW RMY N/A
2/16 50/31/41/+13/…./0.0/…/.. 45 W AERO 44 W RMY 42
2/17 38/23/31/+3/…./…/…/.. 33 SSW AERO 29 SSE RMY 33
2/18 42/29/35/+6/…./…/…/.. 32 WNW AERO 29 WNW RMY 34
2/19 48/30/39/+10/…./0.0/…/.. 39 SSW AERO 37 SSW RMY 40
2/20 68/48/58/+29/…./0.0/…/.. 32 SSW AERO 30 SSW RMY N/A
2/21 70/50/60/+31/0.00/0.0/…/.. 32 SW AERO 30 SW RMY 33
2/22 53/30/42/+13/…./0.8/…/.. 30 N AERO 28 N RMY N/A
2/23 41/28/35/+5/0.20/0.0/…/.. 34 SW AERO 20 SW RMY N/A
2/24 54/35/45/+15/0.06/T/…/.. 32 W AERO 30 W RMY 29
2/25 Low temp since midnight is 33F; normal low is now 30F
DAILY RECORDS FOR FEBRUARY 2018
2/20/18: NEW DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 68F
PREVIOUS RECORD WAS 66F SET IN 1930
2/21/18: NEW DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 70F
PREVIOUS RECORD WAS 62F SET IN 1930
2/21/18: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 50F
PREVIOUS RECORD WAS 45F SET IN 2002
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 25
HIGH 68F IN 2017
LOW -10F IN 1894
PRECIP 2.40 INCHES IN 1981
SNOWFALL 13.6 INCHES IN 1966
PEAK GUST 76 MPH S IN 2016
RECORDS FOR FEBRUARY 26
HIGH 67F IN 1957
LOW -7F IN 1928
PRECIP 2.24 INCHES IN 1979
SNOWFALL 11.1 INCHES IN 1933
PEAK GUST 66 MPH W IN 1961
TODAY’S REPORT PREPARED BY: Robert Millette
