Wednesday, April 16, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, APRIL 16, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
WIND GUSTS OVER 60 MPH FROM SOUTH TUESDAY
RAIN MODERATE TO HEAVY AT TIMES YESTERDAY P.M.
RAIN CHANGED TO SNOW AND SLEET EARLY THIS MORNING
HIGH WINDS ON TUESDAY…APRIL 15..
ALMOST AN INCH OF SNOW THIS MORNING…APRIL 16
Maximum, Inc. Maestro 72 MPH
Maximum, Inc. Merlin 68 MPH S
Aerovane N/A
RM Young 68 MPH
Davis 64 MPH S AT 4:32 P.M.
NWS ASOS 66 MPH S AT 4:33 P.M.
420C 62 MPH S AT 4:32 P.M.
The average wind speed for the day was 28.7 MPH S
and the fastest hour was 40 MPH S 3-4 PM EST.
The two days 14-15 April have a combined average
of 28.1 MPH the highest recorded in a long time.
Rain changed to snow and ice pellets early this morning.
The total accumulation on the boards was 0.8 inch, the
first snowfall of April, but not a record for the date
which is 2.0 ins. on April 16, 1904, 1962.
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, scattered dense ci (layer NE-S
receding) few lower cumulus
Temperature: 28F; Dew Point: 20F; Wind: NW at 23G31 kts.
Wind: Peak wind from NNW @ @ 32 kts @ 6:43 A.M.
Sea-level pressure: 30.12 ins. Hg, RISING RAPIDLY
Visibility: 55 miles, light distant haze
6-hr max temp: 36F
6-hr min temp: 28F
24-hr precip: 1.58 inches
24-hr snowfall: 0.8 inch
Snow depth on ground: 1 inch
BHO SA 1155 28 SCT 220 SCT 55 200/28/20/3223G31/012/ FEW LWR CU
DNS CI LYR RCDNG NE-S SKY CLRG PST HR DSNT HZ PK WND 3332/43/
PRESRR/ TOTAL NEW SNW PST 6/24 HRS 0.8 IN/ 8/802 4/001 51081
ASOS 60037 MANUAL 6//// ASOS 70157 MANUAL 70158 10036 20028
10 A.M.
Weather: Clear, few cumulus fractus and cumulus forming,
layer cirrus and cirrostratus distant ENE-SSE is receding
Temperature: 34F; Dew Point: 19F; Wind: NW at 17G27 kts,
Wind: Peak wind gust 28 kts NW @ 9:05 A.M.
Sea-level pressure: 30.24 ins. Hg, rising then more slowly
Visibility: 60 miles, light distant haze
BHO SA 1455 CLR 60 242/34/19/3217G27/024/ CUFRA/CU FRMG
CS/CI LYR RCDNG DSNT ENE-SSE LGT DSNT HZ PK WND 3228/05/
WND 28V34/ 8/108 51042
1 P.M.
Weather: Clear, few cumulus fractus
Temperature: 40F; Dew Point: 21F; Wind: NW at 17G24 kts
Sea-level pressure: 30.34 ins. Hg, rising then more slowly
Visibility: 65 miles, except 70 miles NW, light distant haze
6-hr max temp: 40F
6-hr min temp: 28F
BHO SA 1755 CLR 65 274/40/21/3117G24/034/ FEW CUFRA/ 8/100 51032
10040 20028
WEATHER SUMMARY FOR TUESDAY, APRIL 15, 2014
TEMPERATURE (DEGREES F)
MAX…..66 NORMAL…..56
MIN…..38 NORMAL…..38
MEAN….52 NORMAL…..47
DEPARTURE FROM 30-YEAR NORMAL…………………….+5
TOTAL DEPARTURE FOR THE MONTH……………………+83 [+5.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..13 DEPARTURE……….-5
TOTAL HEATING UNITS FOR THE MONTH………….235 DEPARTURE………-84
TOTAL HEATING UNITS FOR THE SEASON………..5862 DEPARTURE………+60
TOTAL HEATING UNITS LAST SEASON TO DATE……5328 DIFFERENCE…….+534
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………62 S AT 3:32 P.M.
AERO…………………..N/A
ASOS…………………..66 S AT 3:33 P.M.
DAVIS………………….64 S AT 3:32 P.M. RMY 68
FASTEST MILE FOR YESTERDAY………………..47 S AT 3:37 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..46 S AT 3:39 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….46 S AT 3:39 P.M.
AVERAGE WIND SPEED AND DIRECTION…………28.7 S
ASOS…………………26.6
DAVIS………………..26.0 S [190 deg]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….1.58 DEPARTURE………….+1.43
ASOS…………..1.57
TOTAL PRECIPITATION FOR THE MONTH……….2.86 DEPARTURE………….+0.35
ASOS…………..2.84
TOTAL PRECIPITATION FOR THE YEAR……….17.98 DEPARTURE………….+1.47
ASOS………….18.38
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.8 DEPARTURE…………..+0.7
TOTAL SNOWFALL FOR THE MONTH…………….0.8 DEPARTURE…………..-1.4
TOTAL SNOWFALL FOR THE SEASON…………..85.6 DEPARTURE………….+23.7
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/…/.. 32 S AERO N/A RMY N/A
4/12 68/44/56/+11/0.00/0.0/…/.. 28 W AERO N/A RMY 28
4/13 65/45/55/+10/0.04/0.0/…/.. 35 S AERO N/A RMY N/A
4/14 73/55/64/+18/0.00/0.0/…/.. 55 SW AERO N/A RMY 62
4/15 66/38/52/+5/…./0.0/000/00 62 S AERO N/A RMY 68
4/16 morning low temp: 28F; the normal low is now 38F
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 16
HIGH 89 IN 2012
LOW 23 IN 1943
PRECIP 2.45 IN. IN 1929
SNOWFALL 2.0 IN. IN 1904, 1962
PEAK GUST 73 MPH E IN 2007
RECORDS FOR APRIL 17
HIGH 93 IN 2002
LOW 21 IN 1908
PRECIP 1.68 IN 1954
SNOWFALL 1.0 IN. IN 1899
PEAK GUST 63 MPH ESE IN 2011
TODAY’S REPORT PREPARED BY: Robert Skilling
