BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, NOVEMBER 9, 2012 ALL TIMES ARE IN EASTERN STANDARD TIME MOSTLY SUNNY AND BREEZY; TEMPERATURES RETURNING CLOSE TO NORMAL A layer of stratocumulus clouds present to our east early this morning quickly moved offshore by mid morning, giving way to mostly sunny skies. Only a few cirrus and altocumulus have been observed late this morning and this afternoon. A brisk NW wind is gusting at times to 25-30 mph. The NW wind has been brining in a drier air mass today, with the dew point temperature falling into the mid 20s this afternoon. Temperatures are noticeably warmer since yesterday, but still running a couple of degrees below normal. Today will likely mark the 7th consecutive day of below normal temperatures. The month of November is now running more than 5 degrees below normal! Today's observations: 7 A.M. Weather: Scattered stratocumulus, scattered altocumulus, stratocumulus and stratocumulus lenticularis NNW-E-SSE, few altocumulus and altocumulus lenticularis distant NNE, thin smoke layer aloft distant all quadrants, light distant haze Temperature: 34F; Dew Point: 30F; Wind: NW at 16G25 kts, Wind: Direction variable WNW-N Sea-level pressure: 29.87 ins. Hg, rising Visibility: 70 miles, light distant haze 24-hour precip: 0.17 inch 24-hour snowfall: Trace 6-hour min. temp: 34F BHO SA 1155 30 SCT 100 SCT 70 115/34/30/3216G25/987/ SC/SCSL NNW-E-SSE FEW AC/ACSL DSNT NNE THN K LYR ALF DSNT ALQDS LGT DSNT HZ WND 29V35/ 8/540 4/001 53024 MANUAL 70017 ASOS 70017 10036 20034 10 A.M. Weather: Scattered altocumulus, scattered thin cirrus, cumulus and stratocumulus layer along/offshore distant NE-SE, altocumulus lenticularis W-N, cirrus NNE-SSE, thin smoke layer aloft distant N-ESE, light distant haze Temperature: 42F; Dew Point: 31F; Wind: NW at 16G24 kts, Wind: Peak wind 26 kts. from the NW at 9:18 A.M. Wind: Direction variable WNW-N Sea-level pressure: 29.91 ins. Hg, rising Visibility: 75 miles, light distant haze BHO SA 1455 100 SCT 250 –SCT 75 130/42/31/3216G24/991/ CU/SC LYR ALG/OFFSHR DSNT NE-SE ACSL W-N CI NNE-SSE THN K LYR ALF DSNT N-ESE LGT DSNT HZ PK WND 3226/18 WND 29V36/ 8/541 51015 1 P.M. Weather: Scattered altocumulus, cumulus and stratocumulus layer along/ offshore distant ENE-SE, altocumulus lenticularis overhead and NE-S and SSW-W, thin smoke layer aloft distant NE-SE, light distant haze Temperature: 49F; Dew Point: 25F; Wind: NW at 17G26 kts, Wind: Peak wind 26 kts from the NW at 12:51 P.M. Wind: Direction variable W-N Sea-level pressure: 29.93 ins. Hg, rising Visibility: 75 miles, light distant haze 6-hour max. temp: 50F BHO SA 1755 100 SCT 75 136/49/25/3117G26/993/ CU/SC LYR ALG/OFFSHR DSNT ENE-SE ACSL OVHD AND NE-S AND SSW-W THN K LYR ALF DSNT NE-SE LGT DSNT HZ PK WND 3126/51 WND 27V35/ 8/540 50006 10050 20034 WEATHER SUMMARY FOR THURSDAY, NOVEMBER 8 TEMPERATURE (DEGREES F) MAX.....36 NORMAL.....53 MIN.....29 NORMAL.....36 MEAN....33 NORMAL.....44 DEPARTURE FROM 30-YEAR NORMAL....................-11 TOTAL DEPARTURE FOR THE MONTH....................-40 [-5.2 DEGREES/DAY] HEATING DEGREE DAYS TOTAL HEATING UNITS FOR YESTERDAY............32 DEPARTURE.......+11 TOTAL HEATING UNITS FOR THE MONTH...........198 DEPARTURE.......+41 TOTAL HEATING UNITS FOR THE SEASON..........606 DEPARTURE......-115 TOTAL HEATING UNITS LAST SEASON TO DATE.....573 DIFFERENCE......+33 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..............43 N AT 11:32 A.M. * AERO...................50 N AT 1:49 A.M. ASOS...................48 N AT 1:50 A.M. DAVIS..................48 N AT 1:50 A.M. RMY 44 THE FASTEST MILE FOR YESTERDAY............33 N AT 6:23 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.............31 N AT 6:24 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE............30 N AT 6:24 A.M. AVERAGE WIND SPEED AND DIRECTION........22.7 N ASOS.................20.8 DAVIS................20.2 N [351 deg] *last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.17 DEPARTURE..........+0.02 ASOS..............0.17 TOTAL PRECIPITATION FOR THE MONTH..........1.06 DEPARTURE..........-0.18 ASOS..............1.11 TOTAL PRECIPITATION FOR THE YEAR..........34.26 DEPARTURE.........-10.75 ASOS.............34.29 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M.......Trace DEPARTURE..........-0.1 TOTAL SNOWFALL FOR THE MONTH...............4.0 DEPARTURE..........+3.7 TOTAL SNOWFALL FOR THE SEASON..............4.0 DEPARTURE..........+3.4 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2012 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/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 56/42/49/+3/0.00/371/60 28 SW AERO 28 MPH SW RMY 27 11/2 51/41/46/0/0.02/000/00. 24 WNW AERO 22 MPH WNW RMY 22 11/3 52/37/45/-1/0.00/319/52 29 NW AERO N/A RMY 28 11/4 52/34/43/-2/0.00/570/96 27 NW AERO 25 MPH NW RMY 26 11/5 45/28/37/-8/0.00/292/48 25 NW AERO 25 MPH NW RMY 25 11/6 40/25//33/-12/0.00/600/99 22 ENE AERO 20 MPH ENE RMY N/A 11/7 42/29/36/-9/0.78/3.5/000/00 48 NNE AERO 52 MPH NNE RMY 51 11/8 36/29/33/-11/0.26/0.5/000/00 43 N AERO 50 MPH N RMY 44 11/9 morning low temp: 34F; the normal low is now 35F DAILY RECORDS FOR NOVEMBER 2012 11/7 - NEW DAILY RECORD MAXIMUM SNOWFALL OF 3.5 INCHES; surpasses the previous record of 1.0 inch in 1967 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 9 HIGH 72 IN 1975 LOW 17 IN 1971 PRECIP 1.37 INCHES IN 1969 SNOWFALL 0.2 IN 1921,1923 PEAK GUST 73e S IN 1943 RECORDS FOR NOVEMBER 10 HIGH 75 IN 1931 LOW 20 IN 2004 PRECIP 2.11 INCHES IN 1888 SNOWFALL 2.2 IN 1987 PEAK GUST 83e S IN 1942 TODAY'S REPORT PREPARED BY: Sean Fankhauser