Monday, August 22, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, AUGUST 22, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
A HALF INCH OF RAIN EARLY THIS MORNING (0.54 IN.)
RAINFALL PUTS A SMALL DENT IN OUR EXTREME DROUGHT
PRECIPITATION DEPARTURE STILL OVER -9 INCHES FOR YEAR
COLD FRONTAL STORMS PRODUCED POSSIBLE SMALL TORNADO
This early morning’s early rainfall of just over a half
inch put a small dent in our ongoing severe to extreme drought.
The year’s precipitation departure is still over 9 inches below
normal.
The cold frontal passage very early this morning introduced cooler
and much drier air today. Local storms this morning brought what was
likely a small confirmed tornado to the Concord area to our NW.
There was considerable damage to trees, electric wires and poles.
The National Weather Service investigated this damaged area this morning.
7 A.M.
Weather: Scattered cirrocumulus, layer including altocumulus, and
altocumulus castellanus NNE-SSE receding, lone patch of stratus fractus
distant S
Temperature: 66F; Dew Point: 63F; Wind: WMW at 10 kts,
Wind: Direction variable W-NW
Sea-level pressure: 29.83 ins. Hg, rising then more quickly
Visibility: 30 miles, light distant fog and haze
6-hr Max temp: 73F
6-hr Min temp: 63F
24-hr precip: 0.54 inch
BHO SA 1155 220 SCT 30 100/66/63/2910/983/ LONE STFRA DSNT S
CC/CI/AC/ACC LYRS NNE-SSE RCDNG LGT DSNT F/HZ ALQDS WND 26V32/
8/689 53016 ASOS 60052 ASOS 70055 MANUAL 70054 10073 20063
10 A.M.
Weather: Scattered stratocumulus
Temperature: 73F; Dew Point: 61F; Wind: NW at 15 kts,
Wind: Direction variable WSW-NNW
Wind: Gust to 23 kts past hour w
Sea-level pressure: 29.87 ins. Hg, rising slightly then more slowly
Visibility: 60 miles, except NW 70
BHO SA 1455 26 SCT 60 115/73/61/3115/987/ VSBY NW 70
WND 25V33 GST 23 KTS PST HR/ 8/500 51015
1 P.M.
Weather: Clear, small cumulus and cumulus fractus
Temperature: 76F; Dew Point: 55F; Wind: NW at 14G24 kts,
Wind: Peak wind gust from W at 26 kts at 08 past the hour
Wind: Direction variable W-NNW
Sea-level pressure: 29.91 ins. Hg, rising then more slowly
Visibility: 70 miles, NW at 80 miles
6-hr Max temp: 77F
6-hr Min temp: 66F
BHO SA 1755 CLR 70 127/76/55/3114G24/991/ SML CU/CUFRA ALQDS VSBY NW 80
PK WND 2826/08/ WND 26V33/ 8/100 51012 10077 20066
SUMMARY FOR SUNDAY, AUGUST 21, 2016
TEMPERATURE (DEGREES F)
MAX…..87 NORMAL…..79
MIN…..63 NORMAL…..61
MEAN….75 NORMAL…..70
DEPARTURE FROM 30-YEAR NORMAL……………………+5
TOTAL DEPARTURE FOR THE MONTH…………………..+97 [+4.2 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..10 DEPARTURE……….+4
TOTAL COOLING UNITS FOR THE MONTH………….229 DEPARTURE………+91
TOTAL COOLING UNITS FOR THE SEASON…………703 DEPARTURE……..+214
TOTAL COOLING UNITS LAST SEASON TO DATE…….592 DIFFERENCE…….+111
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 S AT 4:26 P.M.
AEROVANE………………..22 SSE AT 1:19 P.M.
ASOS……………………25 S AT 4:26 P.M.
DAVIS…………………..23 SSE AT 1:19 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………16 S AT 4:06 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………18 S AT 4:07 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..17 S AT 3:53 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.1 SSE
ASOS…………………..10.6
DAVIS………………….10.0 SSE [160 Deg.]
* Last of several occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.54 DEPARTURE……+0.41
ASOS…………..0.55
TOTAL PRECIPITATION FOR THE MONTH……….1.53 DEPARTURE……-1.35
ASOS…………..1.52
TOTAL PRECIPITATION FOR THE YEAR……….24.72 DEPARTURE……-9.15
ASOS………….24.48
PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO/RMY 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
8/1 75/65/70/-2/0.02/320/37 21 NE AERO 20 ENE RMY 20
8/2 71/63/67/-5/0.12/000/00 16 ENE AERO 16 ENE RMY 16
8/3 81/60/71/-1/0.00/603/70 18 S AERO 16 S RMY 17
8/4 86/61/74/+2/0.00/833/97 23 S AERO 22 S RMY 17
8/5 87/61/74/+2/0.00/823/96 29 S AERO 29 S RMY 30
8/6 88/67/78/+6/T/419/49 24 SSW AERO 23 SSW RMY 23
8/7 89/65/77/+5/0.00/784/92 26 WNW AERO 25 WNW RMY 26
8/8 87/63/75/+3/0.00/816/96 23 W AERO 21 W RMY 22
8/9 90/65/78/+6/0.00/789/93 25 SSW AERO 24 SSW RMY 25
8/10 76/66/71/+0/0.28/017/02 30 SSW AERO 31 SSW RMY 33
8/11 93/73/83/+12/T/666/79 22 SSW AERO 21 SSW RMY 22
8/12 95/74/85/+14/0.00/487/58 30 SW AERO 30 SW RMY 31
8/13 77/67/72/+1/0.16/…/.. 25 NNW AERO 36 NNW RMY N/A TSTM
8/14 94/69/82/+11/0.39/…/.. 39 SSW AERO 40 SSW RMY N/A TSTM
8/15 89/68/79/+8/0.00/…/.. 25 W AERO 24 W RMY 28
8/16 83/69/76/+5/0.02/…/.. 31 S AERO 30 S RMY N/A
8/17 84/68/76/+5/0.00/…/.. 38 W* AERO 35 W RMY 39
8/18 89/65/77/+6/T/…/.. 22 SW AERO 20 SW RMY 21
8/19 86/68/77/+7/0.00/…/.. 17 S AERO 16 SSE RMY 17
8/20 86/65/76/+6/0.00/…/.. 25 S AERO 23 S RMY 25
8/21 87/63/75/+5/0.54/…/.. 25 S AERO 22 SSE RMY N/A
8/21 Low temp since midnight is 63F; normal low is now 61F
DAILY RECORDS FOR AUGUST 2016
8/11/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 73F,
TIES PREVIOUS RECORD SET IN 1900 AND 1988
8/12/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 74F,
TIES PREVIOUS RECORD SET IN 1988
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 22
HIGH 90F IN 1939
LOW 42F IN 1894
PRECIP 2.28 INCHES IN 1935
PEAK GUST 44 MPH SSW IN 1987
RECORDS FOR AUGUST 23
HIGH 88F IN 1918, 1947, 1949, 1996
LOW 45F IN 1923
PRECIP 2.09 INCHES IN 2010
PEAK GUST 60e MPH NW IN 1940
TODAY’S REPORT PREPARED BY: Robert Skilling
