Monday, April 28, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, APRIL 28, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
AFTER VERY COOL, WET WEEKEND SKIES HAVE
PARTIALLY CLEARED ALLOWING FOR SOME SUNSHINE
TEMPS. RISE TO LOW TO MID 50’S AFTER BEING
STUCK IN THE CHILLY 40’S ALL WEEKEND
The weekend was very cool and damp with both days
averaging 9 degrees cooler than normal. Light rain
and overcast weather prevailed. Our total rainfall
added up to 0.43 inch. Temperatures have risen
to 56F by early afternoon with intermittent sunshine.
Winds have become light from the northeast.
Today’s Observations:
7 A.M.
Weather: Thin scattered cirrus filosus, patch altocumulus and
altocumulus lenticularis ESE-SE, few distant altocumulus distant
NE-SE, few cirrocumulus lenticularis SE-SSE
Temperature: 42F; Dew Point: 37F; Wind: NW at 7 kts
Sea-level pressure: 30.04 ins. Hg, rising, then more quickly
Visibility: 55 miles, light distant haze
6-hr max temp: 42F
6-hr min temp: 36F
24-hr precip: 0.03 inch
BHO SA 1155 250 –SCT 55 172/42/37/3207/004/ PTCH AC/ACSL ESE-SSE
FEW ACSL DSNT NE-SE/ 8/041 53010 ASOS 70003 MANUAL 70003
10042 20036
10 A.M.
Weather: Overcast stratocumulus generated by spreading out
of cumulus with cumulus present, numerous breaks in overcast,
higher clouds, altocumulus, altocumulus lenticularis and
cirrus visible distant NNE-ESE
Temperature: 49F; Dew Point: 36F; Wind: NE at 8 kts,
Wind: Direction variability N-ENE
Sea-level pressure: 30.06 ins. Hg, rising slightly
Visibility: 75 miles
3-hr precip: none
BHO SA 1455 E34 OVC 75 178/49/36/0508/006/ SCCG ALQDS NMRS BINOVC ALQDS
HIER CLDS AC/ACSL/CI VSB DSNT NNE-ESE ENF 36V07/ 8/441 53006
1 P.M.
Weather: Scattered cumulus, overcast stratocumulus cumulus generated,
cumulus embedded, small break in overcast
Temperature: 55F; Dew Point: 38F; Wind: NE at 6 kts
Wind: Light
Sea-level pressure: 30.04 ins. Hg, falling slightly
Visibility: 80 miles
6-hr max temp: 56F
6-hr min temp: 42F
BHO SA 1755 40 SCT E45 OVC 80 173/55/38/0506/004/ LWR CU EMBDED SML BINOVC
WND LGT/ 8/4// 58005 10056 20042
WEATHER SUMMARY FOR SUNDAY, APRIL 27, 2014
TEMPERATURE (DEGREES F)
MAX…..46 NORMAL…..60
MIN…..38 NORMAL…..42
MEAN….42 NORMAL…..51
DEPARTURE FROM 30-YEAR NORMAL…………………….-9
TOTAL DEPARTURE FOR THE MONTH……………………+33 [+1.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..23 DEPARTURE……….+9
TOTAL HEATING UNITS FOR THE MONTH………….476 DEPARTURE………-35
TOTAL HEATING UNITS FOR THE SEASON………..6103 DEPARTURE……..+108
TOTAL HEATING UNITS LAST SEASON TO DATE……5499 DIFFERENCE…….+604
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………21 NW AT 10:13 P.M *
AERO…………………..N/A
ASOS…………………..23 NNW AT 10:01 P.M.
DAVIS………………….20 WNW AT 9:40 P.M. RMY 23
FASTEST MILE FOR YESTERDAY………………..15 NW AT 10:12 P.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE……………..16 NW AT 10:51 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….14 NW AT 9:59 P.M.
AVERAGE WIND SPEED AND DIRECTION………….6.3 NW
ASOS………………….6.7
DAVIS…………………5.2 NNE [030 deg]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.03 DEPARTURE………….-0.10
ASOS…………..0.03
TOTAL PRECIPITATION FOR THE MONTH……….3.63 DEPARTURE………….-0.52
ASOS…………..3.60
TOTAL PRECIPITATION FOR THE YEAR……….18.75 DEPARTURE………….+0.60
ASOS………….19.14
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE………….. 0.0
TOTAL SNOWFALL FOR THE MONTH…………….0.8 DEPARTURE…………..-2.1
TOTAL SNOWFALL FOR THE SEASON…………..85.6 DEPARTURE………….+23.0
PRELIMINARY CLIMATE SUMMARY FOR APRIL 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: R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
4/1 48/31/40/-1/0.00/0.0/694/91 29 NNE AERO N/A RMY N/A
4/2 56/34/45/+4/0.00/0.0/452/69 22 WSW AERO 20 MPH WSW RMY N/A
4/3 55/36/46/+4/0.00/0.0/707/92 23 NNW AERO 22 MPH NW RMY 25
4/4 47/35/41/-1/0.31/0.0/255/33 26 ESE AERO N/A RMY 25
4/5 51/33/42/-1/0.19/0.0/186/24 39 WNW AERO N/A RMY 40
4/6 58/29/44/+1/0.00/0.0/755/97 25 W AERO N/A RMY N/A
4/7 59/44/52/+9/0.05/0.0/187/24 28 SSE AERO N/A RMY N/A
4/8 62/41/52/+8/0.61/0.0/016/02 45 W AERO N/A RMY 44
4/9 60/36/48/+4/0.00/0.0/707/90 35 NW AERO N/A RMY 36
4/10 57/33/45/0/0.00/0.0/742/94 38 S AERO N/A RMY 39
4/11 70/45/58/+13/T/0.0/111/14 32 S AERO N/A RMY N/A
4/12 68/44/56/+11/0.00/0.0/699/88 28 W AERO N/A RMY 28
4/13 65/45/55/+10/0.04/0.0/215/27 35 S AERO N/A RMY N/A
4/14 73/55/64/+18/0.00/0.0/296/37 55 SW AERO N/A RMY 62
4/15 66/38/52/+5/1.22/0.0/000/00 62 S AERO N/A RMY 68
4/16 43/28/36/-11/0.43/0.8/757/94 39 NNW AERO N/A RMY 39
4/17 39/29/34/-13/T/T/566/70 35 NE AERO N/A RMY 34
4/18 42/28/35/-13/0.00/0.0/016/02 25 E AERO N/A RMY 25
4/19 62/35/49/1/0.00/0.0/732/90 31 NW AERO N/A RMY 32
4/20 52/36/44/-5/0.00/0.0/783/96 21 E AERO N/A RMY 22
4/21 67/36/52/+3/0.00/0.0/778/95 25 SSW AERO N/A RMY 26
4/22 72/44/58/+9/0.07/0.0/427/52 32 S AERO N/A RMY 33
4/23 52/43/48/-2/0.27/0.0/…/.. 47 NW AERO N/A RMY 47
4/24 56/38/47/-3/0.00/0.0/…/.. 52 NW AERO N/A RMY 54
4/25 64/39/52/+2/0.00/0.0/…/.. 25 S AERO N/A RMY 25
4/26 44/39/42/-9/…./0.0/…/.. 18 E AERO N/A RMY 18
4/27 46/38/42/-9/…./0.0/…/.. 21 NW AERO N/A RMY 23
4/28 morning low temp: 36F; the normal low is now 42F
DAILY RECORDS FOR APRIL 2014
4/14 – Minimum temperature of 55F EQUALS RECORD HIGH
MINIMUM FOR THIS DATE SET IN 1909.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR APRIL 28
HIGH 92 IN 1990, 2009
LOW 26 IN 1947
PRECIP 2.41 IN 1904
SNOWFALL 10.0 IN. IN 1987
PEAK GUST 69 MPH NE 1967
RECORDS FOR APRIL 29
HIGH 85 IN 1974
LOW 26 IN 1909
PRECIP 1.65 IN 1923
SNOWFALL 1.0 IN. IN 1987
PEAK GUST 55 MPH WNW IN 2010
TODAY’S REPORT PREPARED BY: Robert Skilling
