BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, NOVEMBER 21, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME Today's discussion.... High clouds have increased steadily today and are covering the sky as a dense cirrostratus overcast with the sun shining through early this afternoon. Visibility has increased only slightly from 20 miles this morning to 25 miles with hazy conditions early this afternoon. Temperatures have returned to above normal again and the month is still averaging 4 degrees warmer than normal. The temperatures were colder than normal for the past three days. Today's observations: 7 A.M. high thin scattered with 20 miles visibility with thin fog below inversion; temp. 42; dewpoint 26; wind SSW 14 MPH; six hourly min. temp. 40 deg. BHO SA 1155 250 -SCT 20 156/42/26/2112/999/ PTCH AC DSNT SE AND PTCHS AC/ACSL SSW-W CI E-SSW FEW DENSE PTCHS THN FH BLO INVSN/ 8/042 56007 10044 20040 10 A.M. high thin scattered with 20 miles visibility; temp. 51; dewpoint 28; wind SSW 09 MPH... BHO SA 1455 300 -SCT 20 144/51/28/2009/996/ LWR CS LYR SSE-SW THN K LYR W-NE HAZY/ 8/005 58012 1 P.M. high dense overcast with thin spots NNW-NE and break in overcast distant N-NE with partial halo; hazy with visibility 25 miles; temp. 56; dewpoint 34; wind S 16 gusting 23 MPH; six hourly max. temp. 56 deg. BHO SA 1755 E250 OVC 25 120/56/34/1914G20/988/ SML PTCH AC NE FEW THN SPTS IOVC NNW-NE BINOVC DSNT N-NE PARTIAL HALO HAZY/ 8/046 56024 10056 20042 WEATHER SUMMARY FOR SUNDAY, NOVEMBER 20: TEMPERATURE (DEGREES F) MAX.....55 NORMAL.....48 HAZEN 55.0 @ 2:10 P.M. MIN.....34 NORMAL.....33 HAZEN 34.3 @ 12:01 A.M. MEAN....45 NORMAL.....40 DEPARTURE FROM 30-YEAR NORMAL......+ 5 TOTAL DEPARTURE FOR THE MONTH......+84 [ 4.0 DEG WARMER THAN NORMAL] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........20 DEPARTURE....- 5 TOTAL HEATING UNITS FOR THE MONTH.........346 DEPARTURE....-84 TOTAL HEATING UNITS FOR THE SEASON........807 DEPARTURE...-215 TOTAL HEATING UNITS LAST SEASON TO DATE...990 DIFFERENCE..-183 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........27 SSW AT 1:49 P.M. AEROVANE..........31 SSW AT 1:49 P.M. ASOS..............26 SSW AT 1:50 P.M. DAVIS.............30 SSW AT 2:12 P.M. FASTEST MILE FOR YESTERDAY...........21 SSW AT 1:45 P.M. ** MAXIMUM 2-MINUTE ASOS AVERAGE........22 SSW AT 2:13 P.M. MAXIMUM 1-MINUTE DAVIS AVERAGE.......23 SSW AT 1:46 P.M. AVERAGE WIND SPEED AND DIRECTION.....14.2 SSW ASOS..............14.3 SSW [200 deg] DAVIS.............14.6 SSW [210 deg] ** last of several occurrences... 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......... 1.64 DEPARTURE....-1.48 ASOS..............1.60 TOTAL PRECIPITATION FOR THE YEAR..........59.26 DEPARTURE...+14.27 ASOS.............58.15* *EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28. SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE....-0.1 TOTAL SNOWFALL FOR THE MONTH................0.0 DEPARTURE....-1.7 TOTAL SNOWFALL FOR THE SEASON...............1.5 DEPARTURE....-0.4 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2005......CALENDAR DAY DATA DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 11/1 70/48/59/+12/0/0/446/72 39 MPH S Aero 40 MPH S 11/2 56/39/48/+2/T/0/543/88 37 MPH WNW Aero 39 MPH WNW 11/3 62/36/49/+3/0/0/449/73 50 MPH S Aero 52 MPH S 11/4 69/46/58/+12/0/0/465/76 29 MPH SSE Aero 30 MPH SSE 11/5 71/47/59/+14/0/0/268/44 18 MPH S 11/6 57/49/53/+8/0.25/0/000/00 31 MPH SSW Aero 36 MPH SSW TSTM 11/7 57/45/51/+6/0.01/0/430/71 47 MPH W Aero 48 MPH W 11/8 60/42/51/+7/0/0/265/44 35 MPH W Aero 36 MPH W 11/9 57/34/46/+2/0.20/258/43 36 MPH SSE Aero 41 MPH SSE 11/10 58/32/45/+1/0.46/102/17 37 MPH W Aero 44 MPH W TSTM 11/11 41/29/35/-8/0/0/536/90 29 MPH W 11/12 51/26/39/-4/0/0/594/100 18 MPH W 11/13 62/41/52/+9/0/0/496/84 30 MPH S Aero 37 MPH S 11/14 63/44/54/+12/T/0/524/89 31 MPH WSW Aero 37 MPH WSW 11/15 53/42/48/+6/0.09/0/000/00 22 MPH E 11/16 65/47/56/+14/0.40/0/029/05* 54 MPH S Aero 58 MPH S 11/17 47/30/39/-2/0.19/0/.../.. 28 MPH W 11/18 38/26/32/-9/0/0/.../.. 30 MPH W 11/19 43/26/35/-6/0/0/.../.. 23 MPH W 11/20 55/34/45/+5/0/0/.../.. 27 MPH SSW Aero 31 MPH SSW 11/21 morning low temp. 40; normal now 33 deg. * the sunshine minutes have been corrected from 37 to 29 minutes.... DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 21 HIGH 69 IN 1931 LOW 10 IN 1888 PRECIP 2.60 INCHES IN 1950 SNOWFALL 4.0 INS IN 1929 PEAK GUST 69 NW IN 1989 RECORDS FOR NOVEMBER 22 HIGH 70 IN 1931 LOW 12 IN 1987 PRECIP 0.92 INS IN 1997 SNOWFALL 9.0 INS IN 1971 PEAK GUST 70e SE IN 1945 TODAY'S REPORT BY: Robert Skilling