BLUE HILL METEOROLOGICAL OBSERVATORY  MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, SEPTEMBER 15, 2014    ALL TIMES ARE IN EASTERN STANDARD TIME MERCURY DIPS TO 43F OVERNIGHT, WHILE SUNDAY MAXES OUT AT 66F After a chilly morning of only 43F, temperatures have increased into the low to mid 60s by mid morning with low cumulus and stratocumulus building at times. Today's normal morning low is 55F. By the 1:00 PM EST observation a maximum of 65F had been reached with a single broken layer of stratocumulus at approximately 4,400 feet. Visibility was good at 75 miles in all directions. Today's Observations: 7 A.M. Weather: Scattered cirrus fibratus, few stratocumulus distant in all directions Temperature: 51; Dew Point: 44F; Wind: NNE at 8 kts Sea-level pressure: 30.24 ins. Hg, rising then more slowly           Visibility: 50 miles, light distant haze   6-hr max temp: 51F 6-hr min temp: 43F 24-hr precip: 0.00 in.   BHO SA 1155 250 SCT 50 242/51/44/0308/024/ FEW SC DSNT ALQDS LGT DSNT HZ ALQDS/ 8/501 50005 10051 20043 10 A.M.   Weather: Scattered cirrus fibratus, few cumulus in  all directions, few altocumulus distant distant NW-ENE  Temperature: 62F; Dew Point: 43F; Wind: estimated NNW at 4 kts Wind Speed: Light Sea-level pressure: 30.23 ins. Hg, steady then falling          Visibility: 70 miles  BHO SA 1455 250 SCT 70 238/62/43/E3304/023/ FEW CU ALQDS FEW AC DSNT NW-ENE WND LGT/ 8/131 58004  1 P.M. Weather: Broken stratocumulus Temperature: 63F; Dew Point: 46F; Wind: estimated SW at 4 kts Wind Speed: Light Sea-level pressure: 30.18 ins. Hg, falling, then more quickly Visibility: 75 miles 6-hr max temp: 65 6-hr min temp: 51 BHO SA 1755 E44 BKN 75 220/63/46/E2104/018/ WND LGT/ 8/400 58018 10065 20051   WEATHER SUMMARY FOR SUNDAY, SEPTEMBER 14, 2014   TEMPERATURE (DEGREES F) MAX.....66    NORMAL.....72 MIN.....47    NORMAL.....55 MEAN....57    NORMAL.....64 DEPARTURE FROM 30-YEAR NORMAL.........................-7 TOTAL DEPARTURE FOR THE MONTH........................+54 [+3.7 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............0   DEPARTURE...........-2 TOTAL COOLING UNITS FOR THE MONTH.............86   DEPARTURE..........+45 TOTAL COOLING UNITS FOR THE SEASON...........565   DEPARTURE..........-13 TOTAL COOLING UNITS LAST SEASON TO DATE......694   DIFFERENCE........-129 HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............8  DEPARTURE..........+5 TOTAL HEATING UNITS FOR THE MONTH..............17  DEPARTURE.........-11      TOTAL HEATING UNITS FOR THE SEASON.............19  DEPARTURE.........-34 TOTAL HEATING UNITS LAST SEASON TO DATE........41  DIFFERENCE........-22 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY..................25 NW  AT  8:17 A.M. *                                ASOS.......................27 NW  AT  5:49 A.M.                                    DAVIS......................22 NW  AT  5:49 A.M. RMY 24         FASTEST MILE FOR YESTERDAY....................18 NW  AT  8:15 A.M.      MAXIMUM 2-MINUTE ASOS AVERAGE.................17 NW  AT  9:23 A.M.              MAXIMUM 2-MINUTE DAVIS AVERAGE................16 WNW AT  9:24 A.M.                           AVERAGE WIND SPEED AND DIRECTION..............9.3 NW                    ASOS.......................9.2                     DAVIS......................N/A   * last of several occurrences                    PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE..........-0.14                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.20  DEPARTURE..........-1.55                               ASOS..............0.18   TOTAL PRECIPITATION FOR THE YEAR..........31.38  DEPARTURE..........-5.39                          ASOS.............31.61    PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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 9/1  88/69/79/+11/0.00/710/90             16 W   RMY 19 9/2  91/70/81/+13/0.00/495/63             24 S   RMY 27 TSTM 9/3  83/67/75/+8/0.00/681/87              24 NW  RMY 27    9/4  86/61/74/+7/0.00/758/97              20 SW  RMY 22  9/5  89/66/78/+11/0.00/731/94             25 SSW RMY 29  9/6  90/67/79/+12/T/481/62                33 SSW RMY 36 TSTM 9/7  77/62/70/+4/0.03/687/89              26 NW  RMY N/A 9/8  74/57/66/+0/0.00/601/78              25 ENE RMY 25 9/9  71/59/65/-1/0.00/384/50              23 ENE RMY 23 9/10 71/58/65/0/0.00/.../..               20 NE  RMY 20  9/11 78/60/69/+4/0.00/.../..          31 SW  RMY 35  9/12 72/51/62/-3/0.00/.../..              25 NNW RMY 22 9/13 67/50/59/-5/0.17/.../..              23 E   RMY 24  9/14 66/47/57/-7/0.00/.../..              25 NW  RMY 24 9/15  morning low temp: 43F since midnight; normal low now 55F DAILY RECORDS FOR SEPTEMBER 2014: None so far. DAILY EXTREMES  Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):      RECORDS FOR SEPTEMBER 15 HIGH 89F IN 1931 LOW 35F IN 1913 PRECIP 3.93 INCHES IN 1904 (Extra-tropical storm making landfall in New England on 9/15/1904 passing east of BHO and bringing a storm total of 4.11 inches 9/14-15/1904) PEAK GUST 65e MPH NW, WSW IN 1944 (In the wake of Great Atlantic Hurricane) RECORDS FOR SEPTEMBER 16 HIGH 91F IN 1939,1941 LOW 39F IN 1984 PRECIP 5.12 INCHES IN 1933 (Hurricane) PEAK GUST 59 MPH SSE IN 1999 TODAY'S REPORT PREPARED BY: Brian Fitzgerald