BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, OCTOBER 24, 2015 ALL TIMES ARE IN EASTERN STANDARD TIME OVERCAST SKIES THIS MORNING, AS TEMPS STAY SEASONABLY COOL Yesterday's maximum temperature of 55F, occurred at midnight yesterday as temperatures cooled throughout the day from the 50s through the upper 30s. The midnight from midnight minimum of 35F was reached at midnight this morning. Another dry day yesterday has added to our already significant deficit which is now 2.38 inches below normal for the month and 7.32 inches for the year. Mostly cloudy to overcast skies have continued throughout this morning with winds shifting between NW and NE. By the 10:00 AM EST observation skies were nearly overcast with stratocumulus. Drier air in the distance to the NW allowed visibility of 70 miles, while the predominant surface visibility was just 40 miles. Today's Observations: 7 A.M. Weather: Broken stratocumulus Temperature: 39F; Dew Point: 32F; Wind: NNE at 8 kts, Sea-level pressure: 30.42 ins. Hg, steady, then rising Visibility: 40 miles, except 90 miles SW-NNW 6-hr Max temp: 39F 6-hr Min temp: 33F 24-hr precip: 0.00 ins. BHO SA 1155 E30 BKN 40 303/39/32/0208/042/ VSBY SW-NNW 90 MI/ 8/500 53003 10039 20033 10 A.M. Weather: Broken stratocumulus Temperature: 44F; Dew Point 35F; Wind: estimated N at 5 kts, Wind Speed: Light Sea-level pressure: 30.45 ins. Hg, rising, then more slowly Visibility: 40 miles, except 70 miles WNW-N BHO SA 1455 E30 BKN 40 313/44/35/E0105/045/ VSBY WNW-N 70 MI WND LGT/ 8/500 51010 SUMMARY FOR FRIDAY, OCTOBER 23, 2015 TEMPERATURE (DEGREES F) MAX.....55 NORMAL.....58 MIN.....34 NORMAL.....40 MEAN....45 NORMAL.....49 DEPARTURE FROM 30-YEAR NORMAL.......................-4 TOTAL DEPARTURE FOR THE MONTH.......................-6 [-0.5 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0 DEPARTURE...........0 TOTAL COOLING UNITS FOR THE MONTH...............0 DEPARTURE..........-5 TOTAL COOLING UNITS FOR THE SEASON............810 DEPARTURE........+208 TOTAL COOLING UNITS LAST SEASON TO DATE.......595 DIFFERENCE.......+215 HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............20 DEPARTURE..........+4 TOTAL HEATING UNITS FOR THE MONTH.............283 DEPARTURE..........+0 TOTAL HEATING UNITS FOR THE SEASON............326 DEPARTURE.........-99 TOTAL HEATING UNITS LAST SEASON TO DATE.......320 DIFFERENCE.........+6 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................31 NNW AT 10:34 A.M.* ASOS........................35 NW AT 8:57 A.M. DAVIS.......................31 NNW AT 8:19 A.M. RMY 34 FASTEST MILE FOR YESTERDAY.....................25 NNW AT 9:36 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................24 NNW AT 9:37 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................22 NW AT 11:25 A.M. AVERAGE WIND SPEED AND DIRECTION..............13.1 N ASOS.......................13.4 DAVIS......................11.1 NNW [333 Deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00 DEPARTURE.....-0.16 ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........1.07 DEPARTURE.....-2.38 ASOS...............1.05 TOTAL PRECIPITATION FOR THE YEAR...........35.21 DEPARTURE.....-7.32 ASOS................N/A *** *** ASOS annual total not available due to erroneous readings 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 55/51/53/-4/..../000/00 39 NE RMY N/A 10/2 51/47/49/-8/..../000/00 40 NE RMY 43 10/3 51/45/48/-8/..../000/00 38 NE RMY N/A 10/4 55/49/52/-4/0.00/474/68 35 E RMY 40 10/5 59/46/53/-3/T/125/18 21 NE RMY 20 10/6 68/43/56/+1/0.00/663/96 17 NW RMY 17 10/7 69/46/58/+3/0.00/640/93 20 W RMY 20 10/8 63/49/56/+2/0.00/678/99 21 S RMY N/A 10/9 68/50/59/+5/0.27/130/19 45 S RMY 49 10/10 59/44/53/-2/0.00/673/99 33 NNW RMY N/A 10/11 67/46/57/+4/0.00/582/86 26 SW RMY 28 10/12 76/50/63/+10/0.00/647/96 22 SSW RMY 24 10/13 70/55/63/+10/0.27/208/31 23 S RMY 24 10/14 66/46/56/+4/0.00/428/64 26 W RMY 29 10/15 60/41/51/-1/0.00/659/99 20 SW RMY 27 10/16 60/44/52/+1/T/471/71 31 W RMY 34 10/17 54/35/45/-6/T/482/73 30 WNW RMY 33 10/18 45/28/37/-14/0.00/480/73 24 NNW RMY 25 10/19 47/26/37/-13/0.00/648/99 25 SSW RMY 30 10/20 65/43/54/+4/0.00/.../.. 28 SW RMY 28 10/21 59/51/55/+5/0.01/.../.. 18 SSE RMY 21 10/22 71/51/61/+12/T/.../.. 31 W RMY 34 10/23 55/34/45/-4/0.00/.../.. 31 NNW RMY 34 10/24 low since midnight is 33F; normal low is now 40F DAILY RECORDS FOR OCTOBER 2015 -NONE SO FAR. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 24 HIGH 79F IN 1963 LOW 22F IN 1969 PRECIP 2.96 INCHES IN 1890 SNOWFALL 1.8 INCHES IN 1960 PEAK GUST 70 MPH SE IN 1959 RECORDS FOR OCTOBER 25 HIGH 81F IN 1963 LOW 26F IN 1922,1939 PRECIP 2.45 INCHES IN 2005 SNOWFALL 1.2 INCHES IN 1960 PEAK GUST 72 MPH ESE IN 1980 TODAY'S REPORT PREPARED BY: Brian Fitzgerald