BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, AUGUST 27, 2012 ALL TIMES ARE IN EASTERN STANDARD TIME SUNSHINE AND ABOVE NORMAL TEMPERATURES CONTINUE TODAY.... MONTHLY AVERAGE WIND SPEED CONTINUES TO DECREASE A HIGH MAXIMUM BAROMETRIC READING ON SUNDAY Twenty-three of the first twenty-six days this month have been warmer than average, and August 2012 is now among the warmest on record with an average departure of more than three degrees per day. The corrected mean temperature for August through the 26th is 73.0 deg F. Warmest Augusts (deg F), 1885-2011: 1) 72.5 in 1988 2) 72.3 in 2005 3) 72.1 in 2002 4) 72.0 in 2001 August continues to be yet another month with very low winds speeds. The monthly wind average (corrected) through August 26 is only 9.6 MPH. The highest barometric pressure since March was recorded by ASOS at 30.38 inches at 9:14 A.M. yesterday. Today's observations: 7 A.M. Scattered altocumulus, 2 levels, few lenticularis Temperature: 66F; Dew Point: 60F; Wind: WSW at 7 kts, Sea-level pressure: 30.21 ins. Hg, rising then falling Visibility: 40 miles, 55 miles above inversion WNW, thin smoke layer along horizon S-W 6-hour min. temp: 61F BHO SA 1155 120 SCT 150 SCT 40 229/66/60/2407/021/ AC/FEW ACSL ESE-SW-NNW PTCH DSNT GF SSE VSBY WNW 55 ABV INVSN THN K LYR ALG HRZN S-W DSNT HZ/ 8/030 50005 10066 20061 10 A.M. Weather: Scattered altocumulus, 2 levels, few lenticularis, patch altocumulus with virga S, cumulus forming distant SE-SW, stratocumulus distant SW-W Temperature: 76F; Dew Point: 63F; Wind: SSW at 9 kts, Wind: Direction variable SSE-WSW Sea-level pressure: 30.18 ins. Hg, decreasing then more rapidly Visibility: 35 miles, distant haze BHO SA 1455 120 SCT 150 SCT 35 221/76/63/2109/018/ CU FRMG DSNT SE-SW SC DSNT SW-W AC/ACSL AC VIRGA S DSNT HZ INCRSNG WND 14V24/ 8/830 58008 1 P.M. Weather: Clear, few cumulus fractus overhead and cumulus fractus and cumulus distant SE-SW-NW, few altocumulus lenticularis distant WSW-NW, cirrus and cirrus densus WSW-NNW Temperature: 84F; Dew Point: 63F; Wind: SSW at 8 kts, Wind: Gust to 20 kts past hour Wind: Direction variable SSE-W Sea-level pressure: 30.11 ins. Hg, decreasing then more slowly Visibility: 40 miles, 45 miles WNW, distant haze 6-hour max. temp: 84F BHO SA 1755 CLR 40 197/84/63/2008/011/ FEW CUFRA OVHD CUFRA/CU SE-SW-NW CU XCPT N-E FEW DSNT ACSL WSW-NW CI/DNS CI DSNT SW-NNW VSBY WNW 45 WND GST 20 KTS PST HR DSNT HZ WND 15V27/ 8/142 56024 10084 20066 WEATHER SUMMARY FOR SUNDAY, AUGUST 26 TEMPERATURE (DEGREES F) MAX.....80 NORMAL.....78 MIN.....63 NORMAL.....61 MEAN....72 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL.....................+3 TOTAL DEPARTURE FOR THE MONTH....................+88 [+3.2 DEGREES/DAY] PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.............17 SW AT 9:14 P.M. * AERO..................15 SW AT 9:14 P.M. * ASOS..................16 SW AT 9:14 P.M. DAVIS.................16 SSW AT 9:13 P.M. RMY 16 THE FASTEST MILE FOR YESTERDAY...........12 SSW AT 9:16 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE............14 SSW AT 9:14 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE...........13 SSW AT 9:14 P.M. AVERAGE WIND SPEED AND DIRECTION........6.5 E ASOS.................6.3 DAVIS................5.9 SE [140 deg] * last of several occurrences. PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE...........-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.74 DEPARTURE...........-0.74 ASOS..............2.70 TOTAL PRECIPITATION FOR THE YEAR..........24.35 DEPARTURE..........-10.12 ASOS.............24.25 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2012 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY: RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 8/1 82/66/74/+2/0.58/390/45 33 W AERO 33 MPH W RMY 35 8/2 87/67/77/+5/T/648/75 20 W AERO 20 MPH W RMY 20 8/3 90/70/80/+8/0.00/707/82 23 SW AERO 23 MPH SW RMY 23 8/4 91/72/82/+10/0.00/713/83 22 S AERP 21 MPH S RMY 23 8/5 87/72/80/+8/0.14/660/77 37 S AERO 37 MPH SSW RMY 37 8/6 82/67/75/+3/0.00/710/83 25 WNW AERO 27 MPH WNW RMY 26 8/7 84/65/75/+3/0.00/725/85 23 S AERO 21 MPH S RMY 23 8/8 87/68/78/+6/0.00/578/68 20 S AERO 18 MPH S RMY 18 8/9 89/68/79/+7/0.00/630/77 25 S AERO 23 MPH S RMY 25 8/10 84/70/77/+6/0.87/228/27 32 SE AERO 32 MPH SE RMY 32 TSTM 8/11 84/69/77/+6/0.00/464/55 25 S AERO 27 MPH S RMY 27 8/12 83/70/77/+6/0.03/420/50 24 S AERO 23 MPH S RMY 23 8/13 84/66/75/+4/0.00/787/94 21 WNW AERO 20 MPH WNW RMY 19 8/14 81/64/73/+2/0.00/451/54 18 W AERO 18 MPH SW RMY 19 8/15 83/63/73/+2/0.89/358/43 33 W AERO 33 MPH W RMY 32 TSTM 8/16 82/64/73/+2/T/714/86 23 WNW AERO 22 MPH WNW RMY 21 8/17 84/65/75/+4/T/729/88 26 S AERO 26 MPH SSW RMY 27 8/18 69/62/66/-5/0.22/0/0 18 WNW AERO 17 MPH WNW RMY 16 8/19 73/56/65/-5/T/353/43 17 N AERO 16 MPH NNW RMY 16 8/20 77/61/69/-1/0.00/312/38 16 SSW AERO 15 MPH SSW RMY 16 8/21 81/62/72/+2/0.01/539/66 21 W AERO 20 MPH W RMY 19 8/22 82/62/72/+2/0.00/766/94 17 W AERO 17 MPH SW RMY N/A 8/23 85/63/74/+4/0.00/.../.. 21 SSW AERO 21 MPH SSW RMY 21 8/24 80/65/73/+3/0.00/.../.. 18 W AERO 16 MPH W RMY 16 8/25 80/64/72/+3/0.00/.../.. 20 ESE AER0 18 MPH ESE RMY 18 8/26 80/63/72/+3/0.00/.../.. 17 SW AERO 15 MPH SW RMY 16 8/27 our morning low temp: 61F; the normal low is now 60F DAILY RECORDS FOR AUGUST 2012 8/4 - DAILY RECORD HIGH MINIMUM TEMP OF 72F; ties the current record of 72F in 1974. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 27 HIGH 99F IN 1948 LOW 44F IN 1885 PRECIP 2.77 INCHES IN 1946 PEAK GUST 48 MPH NW IN 1983 RECORDS FOR AUGUST 28 HIGH 95F IN 1948 LOW 43F IN 1885 PRECIP 1.80 INCHES IN 1922 PEAK GUST 87 MPH SSE IN 1971 (DORIA) PEAK GUST 77 MPH SE IN 2011 (T.S.IRENE) TODAY'S REPORT PREPARED BY: Robert Skilling/Patrick Peters/Peter Volpe