BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, NOVEMBER 27, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME GALES, WARM TEMPERATURES AND HEAVY RAIN SSE-VEERING TO S WINDS GUSTING OVER 60 MPH TEMPERATURE HITS 61 DEGREES RAINFALL REACHES 2.04 INS. THRU 1 P.M. NEW DAILY RAINFALL RECORD FOR NOVEMBER 27 Strong to gale force south-southeast veering to south winds were increasing early today and peak gusts of 63 to 72 MPH have been recorded between 7 and 8 A.M. on our various wind systems. Maximum, Inc. Maestro 72 MPH Maximum, Inc. Merlin 67 MPH SSE Aerovane 68 MPH SSE (7:30 A.M.) RM Young 67 MPH Davis 63 MPH S (7:42 A.M.) NWS ASOS 63 MPH SSS (7:30 A.M.) 420C 63 MPH SSE (7:30 A.M.) Temperatures have risen from 32F 24 hours ago to 58F by 8 a.m. this morning; the record high for this date is 68F in 1896. The maximum through 1 p.m. was 61 degrees. The greatest rainfall rainfall since September 1 (2.32 inches) is in progress and has totaled 2.04 inches (1 P.M.) since precipitation began as some light ice pellets late Tuesday afternoon. A new daily rainfall record has been established but not finalized with 2.04 inches as of early this afternoon. previously 1.92 inches in 1898. Today's Observations: 7 A.M. Weather: Overcast stratus fractus, moderate rain and fog, rain occasionally light rain Temperature: 56F; Dew Point: 56F; Wind: SSE at 27G48 kts. Wind: Peak wind 48 kts from SSE at 6:53 A.M. Wind: Direction variable SE to S Sea-level pressure: 29.49 ins. Hg, falling rapidly then more slowly Visibility: 2 miles, moderate rain and fog 24-hr precip: 0.84 in. 24-hr snowfall: Trace 6-hr min temp: 44F BHO SA 1155 E6 OVC 2RF 985/56/56/1627G48/949/ R OCNL R- PK WND 1648/53/ WND 13V19/ 8/7// 56092 ASOS 60063 MANUAL 6062/ ASOS 70083 MANUAL 70083 10056 20044 10 A.M. Weather: Overcast stratus fractus, light rain and fog Temperature: 60F; Dew Point: 60F; Wind: S at 30G43 kts, Wind: Peak wind 47 kts from S at 9:28 A.M. Sea-level pressure: 29.39 ins. Hg, falling then more slowly Visibility: 2 miles, light rain and flog 3-hr precip: 0.51 in. BHO SA 1455 E7 OVC 2R- 953/60/60/1830G43/939/ PK WND 1747/28 WND 14V20/ 8/7// 56032 ASOS 60050 MANUAL 6051/ 1 P.M. Weather: Stratus drifting over summit, scattered variable to broken stratus fractus, overcast nimbostratus, light rain and fog Temperature: 60F; Dew Point: 60F; Wind: S at 15 kts, Sea-level pressure: 29.33 ins. Hg, falling then more slowly Visibility: 3/4 mile variable 1/4 to 1.5 miles Visbility SSE-W 1 miles 6-hr max temp: 61F 6-hr rainfall: 1.20 ins. Event total: 2.04 ins. BHO SA 1755 7V SCT E25 OVC 3/4VR-F 931/60/60/1815/933/ 7 SCT V BKN STRA DRFTG OVR SMT VSBY 1/4V11/2 VSBY SSE-W 1 R+ PST HR/ 8/72/ 56022 ASOS 60125 MANUAL 60120 EVENT 2.04/ 10061 20056 WEATHER SUMMARY FOR TUESDAY NOVEMBER 26, 2013 TEMPERATURE (DEGREES F) MAX.....42 NORMAL.....46 MIN.....29 NORMAL.....30 MEAN....36 NORMAL.....38 DEPARTURE FROM 30-YEAR NORMAL......................-2 TOTAL DEPARTURE FOR THE MONTH.....................-26 [-1.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............29 DEPARTURE.........+2 TOTAL HEATING UNITS FOR THE MONTH.............613 DEPARTURE........+26 TOTAL HEATING UNITS FOR THE SEASON...........1090 DEPARTURE........-61 TOTAL HEATING UNITS LAST SEASON TO DATE......1020 DIFFERENCE.......+70 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................25 SW AT 3:07 A.M. AERO.......................27 SW AT 3:03 A.M. * ASOS.......................29 SW AT 2:43 A.M. DAVIS......................25 SSW AT 12:00 A.M. RMY 28 FASTEST MILE FOR YESTERDAY....................19 SW AT 4:11 A.M. * MAXIMUM 2-MINUTE ASOS AVERAGE.................20 SW AT 4:13 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................19 SSW AT 1:02 A.M. AVERAGE WIND SPEED AND DIRECTION............11.6 SW ASOS.....................11.9 DAVIS....................10.7 S [190 degrees] * last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.84 DEPARTURE............+0.68 ASOS..............0.83 TOTAL PRECIPITATION FOR THE MONTH..........2.07 DEPARTURE............-2.04 ASOS..............2.05 TOTAL PRECIPITATION FOR THE YEAR..........45.08 DEPARTURE............-2.80 ASOS..............N/A** ** ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M.....Trace DEPARTURE.............-0.2 TOTAL SNOWFALL FOR THE MONTH.............0.2 DEPARTURE.............-1.5 TOTAL SNOWFALL FOR THE SEASON............0.2 DEPARTURE.............-1.8 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 11/1 68/56/62/+16/0.10/0.0/012/02 60 SSW AERO N/A N/A RMY 66 11/2 65/49/57/+11/0.00/0.0/296/48 22 WSW AERO N/A N/A RMY 23 11/3 49/30/40/-6/0.06/T/135/22 23 N AERO N/A N/A RMY N/A 11/4 42/27/35/-10/0.00/0.0/588/96 24 NNE AERO N/A N/A RMY 25 11/5 50/29/40/-5/0.00/0.0/487/80 16 SSW AERO N/A N/A RMY 17 11/6 59/40/50/+5/0.00/0.0/419/69 30 SSW AERO 31 MPH SSW RMY 33 11/7 65/37/51/+6/0.31/0.0/079/13 33 SW AERO 37 MPH SW RMY 37 11/8 48/31/40/-4/T/T/0.0/421/70 37 WNW AERO 37 MPH WNW RMY 39 11/9 44/29/37/-7/0.00/0.0/366/61 25 WNW AERO 25 MPH WNW RMY 29 11/10 52/40/46/+2/0.08/0.0/108/18 31 WNW AERO 33 MPH WNW RMY N/A 11/11 51/36/44/+1/0.00/0.0/500/84 36 WNW AERO 37 MPH WNW RMY 37 11/12 48/24/36/-7/0.11/0.2/000/00 42 SW AERO 43 MPH SW RMY 43 11/13 35/21/28/-15/0.00/0.0/591/100 29 NW AERO 30 MPH NW RMY 30 11/14 49/26/38/-4/0.00/0.0/536/91 25 SW AERO 25 MPH SW RMY 28 11/15 59/38/49/+7/0.00/0.0/393/67 24 S AERO 25 MPH S RMY 26 11/16 59/40/50/+8/0.00/0.0/363/62 20 WSW AERO 20 MPH WSW RMY N/A 11/17 59/42/51/+10/0.07/0.0/000/00 23 SSE AERO 25 MPH SSE RMY N/A 11/18 65/46/56/+15/0.28/0.0/400/69 40 SSW AERO 40 MPH S RMY N/A 11/19 46/28/37/-4/0.00/0.0/428/74 46 WNW AERO 46 MPH WNW RMY 46 11/20 40/25/33/-7/0.00/0.0/.../.. 23 NW AERO 22 MPH NW RMY 22 11/21 46/26/36/-4/0.00/0.0/.../.. 16 SW AERO 16 MPH SW RMY N/A 11/22 46/39/43/+3/0.22/0.0/.../.. 17 WSW AERO 18 MPH SW RMY 19 11/23 46/27/37/-2/0.00/0.0/.../.. 40 WNW AERO 44 MPH WNW RMY 48 11/24 27/17/22/-17/0.00/0.0/.../.. 53 NW AERO 59 MPH NW RMY 57 11/25 32/14/23/-16/0.00/0.0/.../.. 29 W AERO 29 MPH WNW RMY N/A 11/26 42/29/36/-2/..../T/000/00 25 SW AERO 27 MPH SW RMY 28 11/27 morning low temp: 42F since midnight; the normal low is now 30F DAILY RECORDS FOR NOVEMBER 2013 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 27 HIGH 68 IN 1896 LOW 5 IN 1932 PRECIP 1.92 INS IN 1898 SNOWFALL 16.0 INS IN 1898 PEAK GUST 68 NW IN 1997 RECORDS FOR NOVEMBER 28 HIGH 70 IN 1990 LOW 10 IN 1901,1930,1936 PRECIP 1.84 INCHES IN 1889 SNOWFALL 3.0 INS IN 1917 PEAK GUST 90 SSW IN 1958 TODAY'S REPORT PREPARED BY: Robert Skilling