BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, OCTOBER 7, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME TEMP & DEW POINT RISING ON STRONG SOUTH WINDS Dense fog reduced visibility to zero at times this morning. Southerly winds developed early this morning, pushing the temperature and dew point into the mid 60s by the 7 A.M. EST observation. The wind has increased throughout the morning into this afternoon, gusting frequently in the 35-45 mph range with a few higher gusts. Today's Observations: 7 A.M. Weather: Sky obscured by dense fog Temperature: 65F; Dew Point: 65F; Wind: SSE at 11 kts. Sea-level pressure: 30.05 ins. Hg, decreasing then steady Visibility: 0 mile, variable to 1/16 mile, dense fog 24-hr precip: 0.46 inch 6-hour min. temp: 58F BHO SA 1155 W2 X 0VF 177/65/65/1611/005/ VSBY 0V1/16/ 8//// 56005 MANUAL 70046 ASOS 70046 10065 20058 WEATHER SUMMARY FOR SUNDAY, OCTOBER 6, 2013 TEMPERATURE (DEGREES F) MAX.....58 NORMAL.....64 MIN.....53 NORMAL.....47 MEAN....56 NORMAL.....55 DEPARTURE FROM 30-YEAR NORMAL......................+1 TOTAL DEPARTURE FOR THE MONTH.....................+40 [+6.5 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............0 DEPARTURE..........0 TOTAL COOLING UNITS FOR THE MONTH..............4 DEPARTURE.........+2 TOTAL COOLING UNITS FOR THE SEASON...........700 DEPARTURE.......+101 TOTAL COOLING UNITS LAST SEASON TO DATE......766 DIFFERENCE.......-66 HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............9 DEPARTURE.........-1 TOTAL HEATING UNITS FOR THE MONTH.............17 DEPARTURE........-39 TOTAL HEATING UNITS FOR THE SEASON...........163 DEPARTURE........-35 TOTAL HEATING UNITS LAST SEASON TO DATE......123 DIFFERENCE.......+40 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................20 NE AT 7:28 A.M. * AERO.......................20 NE AT 7:06 A.M. * ASOS.......................22 NE AT 7:28 A.M. DAVIS......................21 ENE AT 7:05 A.M. RMY N/A FASTEST MILE FOR YESTERDAY....................15 E AT 2:32 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................15 E AT 2:55 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................15 E AT 2:33 P.M. AVERAGE WIND SPEED AND DIRECTION............10.1 E ASOS......................9.8 DAVIS.....................8.8 E [079 degrees] * last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.46 DEPARTURE.............+0.31 ASOS..............0.46 TOTAL PRECIPITATION FOR THE MONTH..........0.83 DEPARTURE.............-0.06 ASOS..............0.82 TOTAL PRECIPITATION FOR THE YEAR..........42.85 DEPARTURE.............+2.78 ASOS..............N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 2013 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 10/1 75/50/63/+6/0.00/676/96 16 WNW AERO 16 MPH WNW RMY 18 10/2 78/56/67/+10/0.00/666/95 29 W AERO 30 MPH W RMY 29 10/3 77/56/67/+11/0.00/.../.. 20 WNW AERO 20 MPH WNW RMY N/A 10/4 67/56/62/+6/0.26/.../.. 18 NW AERO 20 MPH NW RMY N/A 10/5 67/56/62/+6/0.01/.../.. 14 ENE AERO 12 MPH ENE RMY N/A 10/6 58/53/56/+1/0.56/.../.. 20 NE AERO 20 MPH NE RMY N/A 10/7 morning low temp (since midnight): 57F; the normal low is now 46F DAILY RECORDS FOR OCTOBER 2013 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 7 HIGH 88F IN 1963 (RECORD FOR MONTH) LOW 30F IN 1904,1986 PRECIP 1.75 INCHES IN 1972 PEAK GUST 54 W IN 2009 RECORDS FOR OCTOBER 8 HIGH 81F IN 1916,1990 LOW 28F IN 1919 PRECIP 2.31 INCHES IN 1891 SNOWFALL TRACE IN 1988, 2001 (EARLIEST DATE) PEAK GUST 60 MPH NE IN 1996 TODAY'S REPORT PREPARED BY: Sean Fankhauser and Robert Skilling