BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, OCTOBER 18, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME DENSE FOG ONCE AGAIN EARLY THIS MORNING TURNS TO PARTIAL SUNSHINE LATER THIS MORNING...LOW CLOUDS RETURN THIS AFTERNOON AS SHOWERS APPROACH FROM TO THE WEST... The temperature was unseasonably warm again today near 70F with moderate humidity and dew points in the middle 50s. A strong S-SSW breeze is picking up again today with a peak gust to 29 mph occurring several times since mid-morning. A strong cold front approaching from the west will bring the chance of showers later today and a return to colder temperatures tomorrow and next week. Today's Observations: 7 A.M. Weather: Sky obscured with dense fog Temperature: 58F; Dew Point: 58F; Wind: SSW at 11 kts Sea-level pressure: 29.63 ins. Hg, falling then rising Visibility: 1/16 mile 6-hr max temp: 58F 6-hr min temp: 56F 24-hr precip: 0.00 inch BHO SA 1155 W1 X 1/16F 033/58/58/2011/963/ 8//// 55004 10058 20056 10 A.M. Weather: Scattered stratocumulus, few moderate cumuloform tops, thin broken altocumulus Temperature: 67F; Dew Point: 56F; Wind: S at 16G22 kts, Sea-level pressure: 29.59 ins. Hg, falling Visibility: 30 miles, hazy BHO SA 1455 20 SCT 75 -BKN 30 020/67/56/1816G22/959/ SC FEW MDT CUFRM TOPS ESE-S HAZY/ 8/530 58013 1 P.M. Weather: Scattered stratocumulus (2 levels), broken altocumulus, rain showers distant WSW and WNW, light rain shower past hour Temperature: 68F; Dew Point: 57F; Wind: S at 13G21 kts, Sea-level pressure: 29.53 ins. Hg, falling Visibility: 35 miles, except 45 miles WNW 6-hr max temp: 71F 6-hr min temp: 58F 6-hour precip: Trace BHO SA 1755 30 SCT 65 SCT 120 BKN 35 001/68/57/1913G21/953/ RW DSNT WSW AND WNW HAZY/ 8/570 56019 10071 20058 WEATHER SUMMARY FOR FRIDAY, OCTOBER 17, 2014 TEMPERATURE (DEGREES F) MAX.....71 NORMAL.....60 MIN.....57 NORMAL.....42 MEAN....64 NORMAL.....51 DEPARTURE FROM 30-YEAR NORMAL........................+13 TOTAL DEPARTURE FOR THE MONTH........................+55 [+3.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............1 DEPARTURE..........-13 TOTAL HEATING UNITS FOR THE MONTH.............139 DEPARTURE..........-53 TOTAL HEATING UNITS FOR THE SEASON............240 DEPARTURE..........-94 TOTAL HEATING UNITS LAST SEASON TO DATE.......253 DIFFERENCE.........-13 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................28 SW AT 1:34 P.M. ASOS.......................30 SW AT 1:34 P.M. DAVIS......................28 SSW AT 1:35 P.M. RMY 30 FASTEST MILE FOR YESTERDAY....................23 SW AT 1:33 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE.................23 SW AT 1:35 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................21 SW AT 1:29 P.M. AVERAGE WIND SPEED AND DIRECTION............13.3 SW ASOS.....................13.1 DAVIS....................11.7 SW (215 degrees) * Last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE........-0.15 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.26 DEPARTURE........+0.74 ASOS..............3.24 TOTAL PRECIPITATION FOR THE YEAR..........34.85 DEPARTURE........-6.75 ASOS.............35.04 PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/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 10/1 56/55/56/-1/1.63/000/00 33 NE RMY 36 10/2 55/47/51/-6/0.29/000/00 30 NE RMY N/A 10/3 54/46/50/-6/0.05/000/00 20 NE RMY 20 10/4 63/52/58/+2/0.30/000/00 30 SE RMY 32 10/5 60/45/53/-3/0.00/658/95 26 W RMY 28 10/6 66/42/54/-1/0.00/669/97 25 SSE RMY N/A 10/7 72/54/63/+8/0.01/281/38 43 S RMY 49 10/8 72/53/63/+9/0.01/562/82 40 S RMY N/A 10/9 64/48/56/+2/0.00/648/95 35 W RMY 39 10/10 63/43/53/-1/0.00/489/72 23 W RMY N/A 10/11 50/43/47/-6/0.35/.../.. 15 N RMY N/A 10/12 60/40/50/-3/0.00/.../.. 20 NW RMY N/A 10/13 61/45/53/+0/0.00/.../.. 23 S RMY 25 10/14 75/58/67/+15/0.00/.../.. 29 S RMY 31 10/15 79/62/71/+18/0.02/.../.. 32 SSW RMY 36 10/16 70/60/65/+14/0.60/000/00 37 S RMY 41 10/17 71/57/64/+13/0.00/.../.. 28 SW RMY 30 10/18 morning low temp: 56F since midnight; normal low now 42F DAILY RECORDS FOR OCTOBER 2014: 10/1 - A NEW RECORD DAILY PRECIPITATION OF 1.63 INCHES; surpasses the previous record of 1.44 ins. in 1984 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 18 HIGH 82F IN 1908 LOW 26F IN 1939 PRECIP 2.79 INCHES IN 1975 SNOWFALL 3.0 INCHES IN 2009 PEAK GUST 66 MPH S IN 1967 RECORDS FOR OCTOBER 19 HIGH 81F IN 1945 LOW 21F IN 1922 PRECIP 3.64 INCHES IN 1932 SNOWFALL 1.0 INCHES IN 1972 PEAK GUST 66 MPH SSW IN 1967 TODAY'S REPORT PREPARED BY: Mike Iacono