Saturday, May 24, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, MAY 24, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
CLOUDY START BUT SOME CLEARING THIS AFTERNOON
This morning was characterized by cloudy skies, with plentiful
low and mid level clouds, although a few breaks of blue sky and
peeks of sunshine were observed. While clouds have stuck around
into this afternoon, they have broken up somewhat, allowing for
more sunshine to break through. The combination of clouds and
a light onshore wind has kept the temperature a little on the
cool side today, with a high for the day so far of 63F, compared
to the average high for today of 69F.
A few showers were observed to our north and west this morning,
but no precipitation has fallen at the summit. Visibility has
increased from 30 miles this morning to 50 miles this afternoon,
and the air has dried out some today, with dew points falling
into the 40s.
Today’s Observations:
7 A.M.
Weather: Broken altocumulus, overcast altostratus, few stratus fractus
all quadrants, cumulus distant ESE-S, few altocumulus lenticularis SE,
rain shower distant NW-N
Temperature: 52F; Dew Point: 48F; Wind: N at 7 kts
Sea-level pressure: 30.03 ins. Hg, rising then rising more rapidly
Visibility: 30 miles
6-hr max temp: 52F
6-hr min temp: 49F
BHO SA 1155 E65 BKN 85 OVC 30 169/52/48/3607/003/ FEW STFRA ALQDS
CU DSNT ESE-S FEW ACSL SE SHRA DSNT NW-N/ 8/74/ 53013 10052 20049
10 A.M.
Weather: Scattered stratocumulus (moderate tops SW), broken altocumulus,
few higher altocumulus
Temperature: 55F; Dew Point: 47F; Wind: NE at 6 kts
Sea-level pressure: 30.05 ins. Hg, rising then steady
Visibility: 45 miles
BHO SA 1455 20 SCT E80 BKN 45 177/55/47/0506/005/ MDT TOPS SW FEW HIER AC/
8/530 51008
1 P.M.
Weather: Scattered altocumulus, broken altocumulus, stratocumulus distant
all quadrants except NNE-E
Temperature: 63F; Dew Point: 47F; Wind: NE at8 kts,
Wind: Direction variable N-E
Sea-level pressure: 30.04 ins. Hg, steady then falling slightly
Visibility: 50 miles, distant haze
6-hr max temp: 63F
6-hr min temp: 52F
BHO SA 1755 75 SCT E110 BKN 50 172/63/47/0508/004/ SC DSNT ALQDS XCPT NNE-E
DSNT HZ WND 01V08/ 8/550 58005 10063 20052
WEATHER SUMMARY FOR FRIDAY, MAY 23, 2014
TEMPERATURE (DEGREES F)
MAX…..60 NORMAL…..68
MIN…..49 NORMAL…..50
MEAN….55 NORMAL…..59
DEPARTURE FROM 30-YEAR NORMAL……………………..-4
TOTAL DEPARTURE FOR THE MONTH…………………….+68 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..10 DEPARTURE……….+3
TOTAL HEATING UNITS FOR THE MONTH………….152 DEPARTURE………-70
TOTAL HEATING UNITS FOR THE SEASON………..6323 DEPARTURE………+67
TOTAL HEATING UNITS LAST SEASON TO DATE……5681 DIFFERENCE…….+642
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0 DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH………….13 DEPARTURE……….+1
TOTAL COOLING UNITS FOR THE SEASON…………13 DEPARTURE……….-1
TOTAL COOLING UNITS LAST SEASON TO DATE……..6 DIFFERENCE………+7
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………16 NE AT 7:11 P.M. *
ASOS…………………..19 ENE AT 5:24 P.M.
DAVIS………………….17 ENE AT 4:29 P.M. RMY 18
FASTEST MILE FOR YESTERDAY………………..13 ENE AT 4:47 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..14 ENE AT 6:30 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….13 NE AT 4:18 P.M.
AVERAGE WIND SPEED AND DIRECTION…………. 7.5 NE
ASOS…………………..7.8
DAVIS………………….6.7 E [78 deg]
* Last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE………….-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….2.39 DEPARTURE………….-0.51
ASOS…………..2.40
TOTAL PRECIPITATION FOR THE YEAR……….21.51 DEPARTURE………….+0.06
ASOS………….21.93
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE……………0.0
TOTAL SNOWFALL FOR THE MONTH…………….0.0 DEPARTURE……………0.0
TOTAL SNOWFALL FOR THE SEASON…………..85.6 DEPARTURE………….+22.9
PRELIMINARY CLIMATE SUMMARY FOR MAY 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
5/1 64/43/54/+1/0.49/0.0/093/11 32 SSE RMY 36
5/2 68/51/60/+7/T/0.0/457/54 28 W RMY 29
5/3 66/48/57/+4/0.00/0.0/332/39 21 SW RMY N/A
5/4 60/47/54/0/0.01/0.0/400/47 51 WNW RMY 54
5/5 64/46/55/+1/T/0.0/592/70 30 NW RMY 32
5/6 63/42/53/-1/T/0.0/506/59 30 NW RMY 30
5/7 64/42/55/0/0.00/0.0/850/99 21 WNW RMY 23
5/8 69/48/59/+4/0.00/0.0/612/71 17 SSW RMY 19
5/9 57/51/54/-1/0.05/0.0/000/00 21 S RMY N/A
5/10 78/57/68/+13/0.10/0.0/043/05 33 S RMY 37
5/11 79/58/69/+13/0.01/0.0/746/86 30 W RMY N/A
5/12 85/49/67/+11/0.00/0.0/792/91 39 NE RMY 42
5/13 54/42/48/-8/0.00/0.0/113/13 32 NE RMY N/A
5/14 73/42/58/+1/T/ 0.0/613/70 22 S RMY 24
5/15 77/57/67/+10/T/0.0/140/16 27 S RMY 33
5/16 73/60/67/+10/0.26/0.0/026/03 36 S RMY 41
5/17 74/52/63/+6/1.04/0.0/555/63 36 SSE RMY N/A
5/18 67/47/57/-1/0.00/0.0/521/59 20 NW RMY N/A
5/19 65/48/56/-2/0.12/0.0/443/50 35 NNW RMY 38
5/20 71/48/60/+2/T/0.0/771/89 25 NNW RMY 26
5/21 71/51/61/+2/0.00/0.0/…/.. 18 ESE RMY 20
5/22 67/51/59/0/…./0.0/…/.. 15 SSE RMY 18
5/23 60/49/55/-4/…./0.0/…/.. 16 NE RMY 18
5/24 morning low temp: 49F; the normal low is now 50F
DAILY RECORDS FOR MAY 2014
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR MAY 24
HIGH 92F IN 1964
LOW 35F IN 1956
PRECIP 2.13 INS IN 1951
PEAK GUST 54 MPH NNE IN 2005
RECORDS FOR MAY 25
HIGH 91F IN 2007
LOW 37F IN 1967
PRECIP 3.73 INS IN 1967
PEAK GUST 83 MPH NE IN 1967 (RECORD FOR MAY)
TODAY’S REPORT PREPARED BY: Jonathan O’Brien
