Tuesday, May 27, 2014
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, MAY 27, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
AFTER A WARM NIGHT BACK DOOR COLD ARRIVES THIS MORNING
TEMPERATURE DROPS 20 DEGREES IN 3 HOURS
Last night was our warmest night of the season to date
with an early morning low of 64 degrees. This was well
above the normal low temperature of 51 degrees.
A sharp back-door cold front passed close to 9 A.M. EDT
just after we reached a maximum of 74.0 degrees at
8:53 A.M. EDT. By 12:40 P.M. EDT early this afternoon
the thermometer had bottomed out at 54.0F for a fall
of 20 degrees in 3 hours!
Today’s Observations:
7 A.M.
Weather: Broken dense cirrostratus, thin overcast cirrus/cirrostratus,
few altocumulus chaotic dissipating past hour
Temperature: 71F; Dew Point: 56F; Wind: NNW at 5 kts
Sea-level pressure: 29.86.09 ins. Hg, rising then more slowly
Visibility: 30 miles, hazy
6-hr max temp: 71F
6-hr min temp: 64F
24-hr precip: 0.02 in.
BHO SA 1155 220 SCT 250 –OVC 30 112/71/56/3305/986/ AC/AC CHAOTIC ALQDS
DSSPTNG PST HR HAZY/ 8/097 51015 MANUAL 70002 ASOS 70002 10071 20064
10 A.M.
Weather: Scattered stratus, layer stratus/fog NW-E, moving
southwest, overcast altocumulus, small break in overcast overhead
Temperature: 61F; Dew Point: 57F; Wind: NE at 13 kts
Sea-level pressure: 29.88 ins. Hg, rising then more slowly
Visibility: 10 miles, except 5 miles NW, 2 miles N-E,
12 miles SE-SW
BHO SA 1455 3 SCT E95 OVC 10 120/61/57/0513/988/ 3 SCT FG/STRA NNW-E
MOVG SW SML BINOVC OVHD VSBY NNW-E 2 SE-SW 12 VSBY LWRG THN FG XCPT
DNS FG N-E/ 8/67/ 51008
1 P.M.
Weather: Low overcast stratus
Temperature: 55F; Dew Point: 52F; Wind: ENE at 12 kts,
Sea-level pressure: 29.89 ins. Hg, rising slightly
Visibility: 6 miles, except 4 miles W-NE and 10 miles S-SW,
thin fog all quadrants
6-hr max temp: 74F
6-hr min temp: 54F
6-hr precip: None
BHO SA 1755 E5 OVC 6F 123/55/52/0712/989/ VSBY W-NE 4 S-SW 10 THN
FG ALQDS/ 8/6// 51003 10074 20054
WEATHER SUMMARY FOR MONDAY, MAY 26, 2014 MEMORIAL DAY
TEMPERATURE (DEGREES F)
MAX…..76 NORMAL…..69
MIN…..52 NORMAL…..51
MEAN….64 NORMAL…..60
DEPARTURE FROM 30-YEAR NORMAL……………………..+4
TOTAL DEPARTURE FOR THE MONTH…………………….+70 [+2.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………1 DEPARTURE……….-5
TOTAL HEATING UNITS FOR THE MONTH………….166 DEPARTURE………-75
TOTAL HEATING UNITS FOR THE SEASON………..6337 DEPARTURE………+62
TOTAL HEATING UNITS LAST SEASON TO DATE……5724 DIFFERENCE…….+613
COOLING DEGREE DAYS (SEASON JAN-DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0 DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH………….13 DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE SEASON…………13 DEPARTURE……….-6
TOTAL COOLING UNITS LAST SEASON TO DATE……..6 DIFFERENCE………+7
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………30 W AT 3:01 P.M.
ASOS…………………..35 W AT 3:01 P.M.
DAVIS………………….33 W AT 12:01 P.M. RMY 34
FASTEST MILE FOR YESTERDAY………………..24 WSW AT 3:02 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..25 WSW AT 3:02 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….24 WSW AT 3:02 P.M.
AVERAGE WIND SPEED AND DIRECTION………….14.7 WSW
ASOS………………….14.6
DAVIS…………………13.2 WSW [240 deg]
* Last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.02 DEPARTURE………….-0.13
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE MONTH……….2.46 DEPARTURE………….-0.90
ASOS…………..2.46 *
TOTAL PRECIPITATION FOR THE YEAR……….21.56 DEPARTURE………….-0.33
ASOS………….21.96
* corr. to monthly ASOS total to 2.46 after adding 0.01 on 5/6
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 65/49/57/-2/…./0.0/…/.. 17 ENE RMY 18
5/25 71/49/60/0/0.00/0.0/…/.. 20 S RMY N/A
5/26 76/52/64/+4/0.05/0.0/…/.. 30 W RMY 34
5/27 morning low temp: 64F; the normal low is now 51F
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 27
HIGH 92F IN 1914
LOW 36F IN 1915
PRECIP 1.40 INS IN 1898
PEAK GUST 55 S IN 1956
RECORDS FOR MAY 28
HIGH 90F IN 1929
LOW 39F IN 1917
PRECIP 2.48 INS 1906
PEAK GUST 51e MPH NE IN 1946
TODAY’S REPORT PREPARED BY: Robert Skilling
