BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, JULY 25, 2004 ALL TIMES ARE IN EASTERN STANDARD TIME Today's observations: 7 A.M. Weather: Overcast with clear skies SW-N Temperature: 59F, Dew point: 56F, Wind: N at 10kt Sea-level pressure: 30.33 inches of Hg (rising) Precipitation last 6 hours: 0 inches BHO SA 1155 50 OVC 70 271/59/56/0110/033/ CLR DSNT SW-N FEW STRA E-S FEW BINOVC VCTY STN VSBY E 20/ 8/47/ 53008 10059 20058 70133 10 A.M. Weather: Overcast with a few breaks Temperature: 66, Dew point: 56, Wind: NNE AT 10kt Sea-level pressure: 30.33 inches of Hg (steady) Precipitation last 3 hours: 0 inches BHO SA 1455 50 OVC 70 271/66/56/0210/033/ FEW BINOVC ALQDS FEW LWR CU FRMG DSNT S-NW/ 8/5// 58000 1 P.M. Weather: Temperature: 70, Dew Point: 53, Wind: NE AT 12kt Sea-level pressure: 30.30 inches of Hg falling Precipitation last 6 hours: 0 inches BHO SA 1755 120 BKN 200 OVC 75 261/70/53/0512G16/030/ FEW SC SW-NW/ 8/571 56010 10070 20058 WEATHER SUMMARY FOR SATURDAY, JULY 24: TEMPERATURE (DEGREES F) MAX.....72 NORMAL.....82 ASOS.....72 AT 5:33 AM MIN.....58 NORMAL.....63 ASOS.....58 AT 11:59 AM MEAN....65 NORMAL.....73 DEPARTURE FROM 30-YEAR NORMAL......-8 TOTAL DEPARTURE FOR THE MONTH.....-33 (-1.4 DEGREES/DAY) HEATING DEGREE DAYS TOTAL HEATING DEGREE DAYS FOR 2003-2004 SEASON...6291 DIFFERENCE..-80 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........30 N AT 8:02 A.M. AEROVANE.........34 N AT 8:02 A.M. ASOS.............33 N AT 8:02 A.M. FASTEST MILE FOR YESTERDAY..........28 N AT 8:04 A.M. ASOS.............26 N AT 8:06 A.M. AVERAGE WIND SPEED AND DIRECTION..11.3 NE ASOS...........11.5 PRECIPITATION (INCHES) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.33 DEPARTURE....+1.21 ASOS..............1.37 TOTAL PRECIPITATION FOR THE MONTH..........4.65 DEPARTURE....+1.75 ASOS..............4.71 TOTAL PRECIPITATION FOR THE YEAR..........27.52 DEPARTURE....-1.05 ASOS.............25.95 SNOWFALL (INCHES) TOTAL SNOWFALL FOR 2003-2004 SEASON.......58.0 DEPARTURE.....+1.7 PRELIMINARY CLIMATE SUMMARY FOR JULY, 2004 CALENDAR DAY DATA DATA REPORTED: DATE MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST 7/1 82/62/72/+02/0.06/T/507/55 29 MPH S TSTM * 7/2 83/59/71/+01/0.93/T/575/63 45 MPH W TSTM * 7/3 80/59/70/+-0/0.00/0/892/98 21 MPH NNW 7/4 81/59/70/+-0/0.00/0/817/90 23 MPH SSE 7/5 69/63/66/-05/1.29/0/000/00 33 MPH S 7/6 79/65/72/+01/T /0/367/40 22 MPH NW 7/7 78/63/71/+-0/0.00/0/690/76 23 MPH SSE 7/8 75/62/69/-02/0.01/0/045/05 24 MPH S 7/9 75/62/69/-02/0.00/0/534/59 25 MPH S 7/10 80/59/70/-01/0.00/0/842/93 21 MPH NW 7/11 74/60/67/-05/0.00/0/713/79 20 MPH N 7/12 76/59/68/-04/0.00/0/189/21 24 MPH S 7/13 64/60/62/-10/0.27/0/000/00 28 MPH ENE 7/14 63/59/61/-11/0.18/0/000/00 27 MPH NNE 7/15 77/60/69/-03/0.00/0/000/00 29 MPH S AERO 33 MPH S 7/16 79/62/71/-01/0.00/0/395/44 30 MPH SW AERO 33 MPH SW 7/17 84/63/74/+02/0.00/0/600/67 23 MPH WSW 7/18 82/66/74/+02/T /0/751/84 22 MPH ESE 7/19 72/64/68/-04/0.13/0/009/01 22 MPH NNE 7/20 84/67/76/+04/0.00/0/.../.. 22 MPH WSW 7/21 84/66/75/+03/0.00/0/.../.. 16 MPH SE AERO 20 MPH SE 7/22 86/67/77/+05/0.00/0/.../.. 24 MPH SSW AERO 28 MPH S 7/23 83/67/73/-03/0.00/0/.../.. 28 MPH S 7/24 72/58/65/-08/1.45/0/000/00 30 MPH N 7/25 MORNING LOW: 58 * = Trace of Hail AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available DAILY EXTREMES RECORDS FOR JULY 25 HIGH 94F IN 1963 LOW 51F IN 1901,1953 PRECIP 2.25 INCHES IN 1920 SNOW 0 WIND 88 MPH NW IN 1972 RECORDS FOR JULY 26 HIGH 97F IN 1963 LOW 47F IN 1920 PRECIP 2.05 INCHES IN 1899 SNOW 0 WIND 74e MPH NNW IN 1940 e = Estimated TODAY'S REPORT BY: Andrew Hoell