Thursday, April 24, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, APRIL 24, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
CLEAR AND WINDY CONDITIONS PREVAIL FOLLOWING RAINFALL
TOTALING 0.27 INCHES YESTERDAY
A few heavier downpours yesterday brought just over a quarter
of an inch of rain along with a few rumbles of thunder.
A maximum temperature of 52F was recorded on Wednesday during
the 7:00 AM EST observation and was held suppressed during
much of the rest of the day. By 7:00 AM EST this morning
the mercury had fallen to a minimum of 38F.
By 1:00 PM EST today a maximum of 55F had been reached
under continuing gusty winds and exceptionally good visibility.
Today’s Observations:
7 A.M.
Weather: Clear, few cumulus distant NW-N,
few stratocumulus distant offshore NE-SE
Temperature: 41F; Dew Point: 18F; Wind: NW at 23G35 kts,
Peak Wind: 38 kts NW at 6:16 A.M.
Sea-level pressure: 29.65 ins. Hg, increasing, then more slowly
Visibility: 90 miles, maximum visibility
6-hr max temp: 43F
6-hr min temp: 38F
24-hr precip: 0.27 in.
BHO SA 1155 CLR 90 042/41/18/3123G35/965/
FEW CU DSNT NW-N FEW SC DSNT OFFSHR NE-SE PK WND 3138/16/
8/500 51012 ASOS 70028 MANUAL 70027 10043 20038
10 A.M.
Weather: Clear, few cumulus in all directions,
few altocumulus and cirrus distant N-ESE
Temperature: 48F; Dew Point: 22F; Wind: NW at 29G39 kts,
Peak Wind: 40 kts NW at 8:54 AM EST
Sea-level pressure: 29.67 ins. Hg, increasing, then steady
Visibility: 90 miles, maximum visibility
BHO SA 1455 CLR 90 049/48/22/3229G39/967/
FEW CU ALQDS FEW AC AND CI DSNT N-ESE PK WND 3240/1354/ 8/131 51007
1 P.M.
Weather: Clear, few cumulus distant W-NNW,
few altocumulus distant NNE-ESE, few cirrus distant NNE-WSW
Temperature: 54F; Dew Point: 17F; Wind: NNW at 21G38 kts,
Peak Wind: 45 kts NW @ 11:57 AM EST
Sea-level pressure: 29.68 ins. Hg, rising slightly
Visibility: 90 miles, maximum visibility
6-hr max temp: 55F
6-hr min temp: 41F
BHO SA 1755 CLR 90 051/54/17/3321G38/968/
FEW CU DSNT W-NNW FEW AC DSNT NNE-ESE FEW CI DSNT NNE-WSW
PK WND 3145/1657/ 8/131 53002 10055 20041
WEATHER SUMMARY FOR WEDNESDAY, APRIL 23, 2014
TEMPERATURE (DEGREES F)
MAX…..52 NORMAL…..59
MIN…..43 NORMAL…..41
MEAN….48 NORMAL…..50
DEPARTURE FROM 30-YEAR NORMAL…………………….-2
TOTAL DEPARTURE FOR THE MONTH……………………+52 [+2.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..17 DEPARTURE……….+2
TOTAL HEATING UNITS FOR THE MONTH………….399 DEPARTURE………-54
TOTAL HEATING UNITS FOR THE SEASON………..6026 DEPARTURE………+90
TOTAL HEATING UNITS LAST SEASON TO DATE……5451 DIFFERENCE…….+575
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………47 NW AT 4:21 P.M.
AERO…………………..N/A
ASOS…………………..49 NW AT 4:22 P.M.
DAVIS………………….44 NW AT 9:56 P.M. RMY 47
FASTEST MILE FOR YESTERDAY………………..34 NW AT 4:36 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..33 NW AT 4:11 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….30 NW AT 4:11 P.M.
AVERAGE WIND SPEED AND DIRECTION………….16.4 NW
ASOS………………….16.6
DAVIS…………………13.5 NW [305 deg]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.27 DEPARTURE………….+0.13
ASOS…………..0.28
TOTAL PRECIPITATION FOR THE MONTH……….3.20 DEPARTURE………….-0.42
ASOS…………..3.19
TOTAL PRECIPITATION FOR THE YEAR……….18.32 DEPARTURE………….+0.70
ASOS………….18.73
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…………..-2.0
TOTAL SNOWFALL FOR THE SEASON…………..85.6 DEPARTURE………….+23.1
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/…/.. 39 NNW AERO N/A RMY 39
4/17 39/29/34/-13/T/T/…/.. 35 NE AERO N/A RMY 34
4/18 42/28/35/-13/0.00/0.0/…/.. 25 E AERO N/A RMY 25
4/19 62/35/49/1/0.00/0.0/…/.. 31 NW AERO N/A RMY 32
4/20 52/36/44/-5/0.00/0.0/…/.. 21 E AERO N/A RMY 22
4/21 67/36/52/+3/0.00/0.0/…/.. 25 SSW AERO N/A RMY 26
4/22 72/44/58/+9/0.07/0.0/…/.. 32 S AERO N/A RMY 33
4/23 52/43/48/-2/0.27/0.0/…/.. 47 NW AERO N/A RMY 47 TSTM
4/24 morning low temp: 38F; the normal low is now 41F
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 24
HIGH 82 IN 2001
LOW 22 IN 1930
PRECIP 2.51 INS IN 1898
SNOWFALL 1.2 INS IN 1967
PEAK GUST 59 MPH NW IN 1962
RECORDS FOR APRIL 25
HIGH 83 IN 2009
LOW 24 IN 1892
PRECIP 1.38 IN. IN 1901
SNOWFALL 0.7 IN. IN 2002.
PEAK GUST 66 MPH SE IN 1968
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
