BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, JANUARY 13, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME A CALM AND CLEAR MONDAY FEATURING ABOVE AVERAGE TEMPERATURES CONTINUES THE JANUARY THAW. Gusty westerly winds yesterday have relaxed today as the flow has shifted toward the south under abundant sunshine. By mid day today skies were partly cloudy with only high cirrus to be found ahead of a weak system likely bringing more rain to our region by tomorrow. Today's Observations: 7 A.M. Weather: Clear, few thin altostratus. Temperature: 31F; Dew Point: 24F; Wind: SW at 10 kts Sea-level pressure: 30.10 ins. Hg, increasing, then steady Visibility: 35, hazy 6-hr. min temp: 30F BHO SA 1155 CLR 35 193/31/24/2310/010/ THN AS DSNT NNE THN HZ DSNT WSW-NNE 8/010 51016 10032 20030 10 A.M. Weather: Scattered cirrus fibratus, few cirrocumulus and dense cirrus Temperature: 38F; Dew Point: 27F; Wind: SSW at 8 kts Sea-level pressure: 30.11 ins. Hg, increasing, then steady Visibility: 50 miles BHO SA 1455 250 SCT 50 198/38/27/2008/011/ FEW CICU SE-WNW FEW DNS CI SE-NW DRK K LYR ALG HRZN SSW-NNE 8/001 51005 1 P.M. Weather: Scattered dense cirrus, broken cirrus fibratus Temperature: 48F; Dew Point: 27F; Wind: S at 10 kts Sea-level pressure: 30.04 ins. Hg, steady, then decreasing Visibility: 40 miles 6-hr max. temp: 49F BHO SA 1755 200 SCT E250 BKN 40 174/48/27/1910/004/ SCT DNS CI ALQDS DRK K LYR ALG HRZN SSW-NNE/ 8/001 58024 10049 20031 WEATHER SUMMARY FOR SUNDAY, JANUARY 12, 2014 TEMPERATURE (DEGREES F) MAX.....51 NORMAL.....34 MIN.....32 NORMAL.....17 MEAN....42 NORMAL.....25 DEPARTURE FROM 30-YEAR NORMAL.......................+17 TOTAL DEPARTURE FOR THE MONTH.......................-29 [-2.6 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............23 DEPARTURE.........-17 TOTAL HEATING UNITS FOR THE MONTH.............498 DEPARTURE.........+30 TOTAL HEATING UNITS FOR THE SEASON...........2775 DEPARTURE..........+2 TOTAL HEATING UNITS LAST SEASON TO DATE......2432 DIFFERENCE.......+343 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................41 W AT 11:06 A.M. AERO.......................44 W AT 11:05 A.M. ASOS.......................45 W AT 11:09 A.M. DAVIS......................40 WNW AT 12:25 P.M. RMY 42 FASTEST MILE FOR YESTERDAY....................30 W AT 12:07 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................31 W AT 12:08 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................29 WNW AT 11:43 A.M. AVERAGE WIND SPEED AND DIRECTION.............20.4 W ASOS......................20.1 DAVIS.....................17.4 W [274 deg.] 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..........2.48 DEPARTURE........+0.78 ASOS..............2.86 TOTAL PRECIPITATION FOR THE YEAR...........2.48 DEPARTURE........+0.78 ASOS..............2.86 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.........-0.6 TOTAL SNOWFALL FOR THE MONTH...............15.9 DEPARTURE.........+9.1 TOTAL SNOWFALL FOR THE SEASON..............31.6 DEPARTURE.........+8.8 PRELIMINARY CLIMATE SUMMARY FOR JANUARY 2014 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 1/1 26/16/21/-6/0.00/0.0/505/92 25 W AERO 25 MPH W RMY 27 1/2 24/00/12/-15/..../../000/00 39 NNE AERO 39 MPH NNE RMY 39 1/3 12/-3/05/-21/.../../270/49 36 N AERO 39 MPH N RMY 34 1/4 25/-4/11/-15/..../../545/99 35 SSW AERO 37 MPH SSW RMY 38 1/5 42/23/33/+07/..../../259 47 30 SE AERO 32 MPH SE RMY 42 1/6 57/25/41/+15/..../../006/01 41 S AERO 46 MPH S RMY 48 1/7 25/06/16/-10/0.00/0.0/555/100 44 WNW AERO 46 MPH WNW RMY 42 1/8 21/3/12/-14/0.00/0.0/550/99 28 WSW AERO 29 MPH WSW RMY N/A 1/9 28/13/21/-5/0.00/0.0/.../.. 23 WNW AERO 24 MPH WNW RMY 27 1/10 37/17/27/+2/..../0.3/000/00 17 SSW AERO 18 MPH SW RMY N/A 1/11 57/37/47/+22/..../0.0/000/00 50 S AERO 59 MPH S RMY 59 1/12 51/32/42/+17/0.00/0.0/.../.. 41 W AERO 44 MPH W RMY 42 1/13 morning low temp: 30F; the normal low is now 17F DAILY RECORDS FOR JANUARY 2014 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JANUARY 13 HIGH 57F IN 1890,1932 LOW -10F IN 1912,1914 PRECIP 1.54 INS. IN 1979 SNOWFALL 12.6 INS. IN 1964 PEAK GUST 74 MPH NE IN 1964 RECORDS FOR JANUARY 14 HIGH 65F IN 1995 LOW -12F IN 1914 PRECIP 1.45 INS. IN 2008 SNOWFALL 10.3 INS. IN 2008 PEAK GUST 68 MPH WNW IN 1976, S IN 2005 TODAY'S REPORT PREPARED BY: Brian Fitzgerald