BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, NOVEMBER 23, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME Today's discussion.... FIRST SNOWFALL FOR NOVEMBER THIS MORNING.... LOWEST PRESSURE FOR ANY MONTH SINCE FEBRUARY 1995... A light dusting of snow measured 0.2 inch at 7 a.m. this morning. This was the first snow observed thus far during November and our first snowfall since October 29 with 1.5 inches. The lowest sea level pressure of 28.72 inches at 2:40 p.m. yesterday was our lowest for any month since 28.67 inches on February 4, 1995, and lowest for November in over 60 years. Today's observations: 7 A.M. overcast with very light snowflurries and 20 miles visibility; temp. 27; dewpoint 23; wind west at 13 mph; six hourly min. temp. 27 deg; 24 hourly snowfall 0.2 inch; precip 0.77 in. BHO SA 1155 E65 BKN 85 OVC 20SW- 947/27/23/2611/937/ FEW SC W-N-E NMRS BINOVC VSBY W-NW 15 SE-SW 25 PCPN VRY LGT TOTAL NEW SNW PST 24 HRS 0.2 IN/ 8/57/ 51029 ASOS 60000 MANUAL 6001/ ASOS 70077 MANUAL 70077 10032 20027 10 A.M. broken variable overcast with 70 miles visibility; temp. 29; dewpoint 17; wind W 15 gusting 25 MPH; 3-HOURLY SNOWFALL trace; precip. trace BHO SA 1455 E29 BKN 250 BKN 70 964/29/17/2713G22/942/ 29 BKN V OVC FEW PTCHS VIRGA ALQDS MTN INCLD 70 NW SE10/ 8/501 MANUAL 6000/ 1 P.M. overcast with a few breaks and visibility 70 miles; temp. 29; dewpoint 16; wind west at 16 gusting 23 mph; six hourly max. temp. 30; snowfall and precip. a trace BHO SA 1755 E35 OVC 70 971/29/16/2714G20/944/ BINOVC DSNT S-SW OCNL SML BINOVC OVHD HIER CLD VSB VIRGA DSNT NE-SE WND 24V30/ 8/5// 51007 MANUAL 6000/ 10030 20027 WEATHER SUMMARY FOR TUESDAY, NOVEMBER 22: TEMPERATURE (DEGREES F) MAX.....47 NORMAL.....48 MIN.....33 NORMAL.....33 MEAN....40 NORMAL.....40 DEPARTURE FROM 30-YEAR NORMAL...... 0 TOTAL DEPARTURE FOR THE MONTH......+92 [ 4.0 DEG WARMER THAN NORMAL] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY..........25 DEPARTURE.... 0 TOTAL HEATING UNITS FOR THE MONTH.........388 DEPARTURE....-92 TOTAL HEATING UNITS FOR THE SEASON........849 DEPARTURE...-223 TOTAL HEATING UNITS LAST SEASON TO DATE..1072 DIFFERENCE..-186 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........44 W AT 7:52 P.M. AEROVANE..........50 W AT 7:52 P.M. ASOS..............44 W AT 7:52 P.M. DAVIS.............43 WNW AT 7:43 P.M. FASTEST MILE FOR YESTERDAY...........34 W AT 7:52 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE........33 W AT 7:52 P.M. MAXIMUM 1-MINUTE DAVIS AVERAGE.......36 W AT 7:52 P.M. AVERAGE WIND SPEED AND DIRECTION.....18.9 W ASOS..............18.6 WNW[290 deg] DAVIS.............18.4 NW [320 deg] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.77 DEPARTURE....+0.61 ASOS..............0.77 TOTAL PRECIPITATION FOR THE MONTH......... 3.63 DEPARTURE....+0.35 ASOS..............3.60 TOTAL PRECIPITATION FOR THE YEAR..........61.25 DEPARTURE...+16.10 ASOS.............60.15* *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..........0.2 DEPARTURE....+0.1 TOTAL SNOWFALL FOR THE MONTH................0.2 DEPARTURE....-1.7 TOTAL NORMAL SNOWFALL FOR NOVEMBER..........2.7 TOTAL SNOWFALL FOR THE SEASON...............1.7 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 56/40/48/+8/0.20/0/403/70 25 MPH S 11/22 47/33/40/0/1.78/0/000/00 44 MPH W Aero 50 MPH W 11/23 today's high temp. 33 deg at start of the day.... and 0.2 snow and 0.01 melted early today... A new daily rainfall record has been established for November 22 with 1.78 inches; the previous record was 0.92 inch in 1997.... DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 23 HIGH 73 IN 1931 LOW 09 IN 1888 PRECIP 2.19 INS IN 1953 SNOWFALL 5.5 INS IN 1989 PEAK GUST 64e S IN 1953 RECORDS FOR NOVEMBER 24 HIGH 69 IN 1931 LOW 07 IN 1897 PRECIP 1.76 INCHES IN 1901 SNOWFALL 4.5 INS IN 1936 PEAK GUST 69 SSW IN 1959 TODAY'S REPORT BY: Robert Skilling