BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY CLIMATE SUMMARY FRIDAY, JULY 23, 2004 ALL TIMES ARE IN EASTERN DAYLIGHT TIME [unless otherwise noted] TODAY'S DISCUSSION.... Typical warm, hazy and rather humid July weather continues with temperatures warming to near 80 degrees late this morning. The breeze is varying between south and southwest at 10 to 15 mph. Visibility has been between 3 and 6 miles all morning averaging out to be around 5 miles at 11 A.M. in haze. TODAY'S MANUAL OBSERVATIONS.... 7/23/2004 FRI 8 a.m. partial obscuration estimated 400 ft broken stratus; 4 miles visibility in fog and haze; temp. 71; dewpoint 68; wind south at 14 mph; visibility 6 miles to the east; 6-hr max. temp. 71; 6-hr min. temp. 68 BHO SA 1155 -X E4 BKN 4FH 142/71/68/1912/995/ F2 VSBY E 6/ 8/600 50003 10071 20068 11 a.m. estimated 1500 ft broken cumulus; 5 miles visibility in haze; temp. 78; dewpoint 68; wind ssw at 18 mph gusting to 23 mph; BHO SA 1455 E15 BKN 5H 149/78/68/2016G20/997/ 8/200 51007 WEATHER SUMMARY FOR THURSDAY JULY 22: TEMPERATURE (DEGREES F) MAX.....86 NORMAL.....82 HAZEN SHELTER: 86.1 @ 2:04 p.m. MIN.....67 NORMAL.....63 HAZEN SHELTER: 67.2 @ 11:40 p.m. MEAN....77 NORMAL.....72 DEPARTURE FROM 30-YEAR NORMAL.........+5 TOTAL DEPARTURE FOR THE MONTH.........-28 JULY IS AVERAGING ABOUT 1.5 DEGREES COOLER THAN NORMAL PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........24 SSW AT 4:36 p.m. AEROVANE..........28 S AT 5:29 p.m. ASOS..............23 S AT 6:22 p.m. DAVIS.............29 S AT 6:33 p.m. ASOS 2-MINUTE.....21 S AT 5:33 p.m. FASTEST MILE......20 S AT 5:33 p.m. OUR AVERAGE.......11.3 MPH S ASOS AVERAGE......11.9 MPH S [180 deg.] DAVIS AVERAGE.....11.4 MPH SSW [200 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EDT) TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.00 DEPARTURE....-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.20 DEPARTURE....+0.54 ASOS..............3.23 TOTAL PRECIPITATION FOR THE YEAR..........26.07 DEPARTURE....-2.26 ASOS.............24.47 PRELIMINARY CLIMATE SUMMARY FOR JULY 2004......CALENDAR DAY DATA DATA REPORTED: 24 HOUR PERIODS ENDING MIDNIGHT EST DATE MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane recording wind system when significant TSTM: Thunderstorm day ....: Data not yet available 7/1 82/62//72/+2/0.06/T/507/55 29 MPH S TSTM trace/sml hail 7/2 83/59/71/+1/0.93/T/575/63 45 MPH W TSTM trace of hail * 7/3 80/59/70/0/0/892/98 21 MPH NNW 7/4 81/59/70/0/0/817/90 23 MPH SSE 7/5 69/63/66/-5/1.29/000/00 33 MPH S 7/6 79/65/72/+1/T/367/40 22 MPH NW 7/7 78/63/71/0/0/690/76 23 MPH SSE 7/8 75/62/69/-2/0.01/045/05/ 24 MPH S 7/9 75/62/69/-2/0/534/59 25 MPH S 7/10 80/59/70/-1/0/842/93 21 MPH NW 7/11 74/60/67/-5/0/713/79 20 MPH N 7/12 76/59/68/-4/0/189/21 24 MPH S 7/13 64/60/62/-10/.../000/00 28 MPH ENE 7/14 63/59/61/-11/0.18/000/00 27 MPH NNE 7/15 77/60/69/-3/0/000/00 29 MPH S AERO 33 MPH S 7/16 79/62/71/-1/0/395/44 30 MPH SW AERO 33 MPH SW 7/17 84/63/74/+2/0/600/67 23 MPH WSW 7/18 82/66/74/+2/T/751/84 22 MPH ESE 7/19 72/64/68/-4/0.13/9/1 22 MPH NNE 7/20 84/67/76/+4/0/.../.. 22 MPH WSW 7/21 84/66/75/+3/0/.../.. 16 MPH SE AERO 20 MPH SE 7/22 86/67/77/+5/0/.../.. 24 MPH SSW AERO 28 MPH S 7/23 Morning low 68 degrees... VERY HEAVY RAINFALL EVENT ON JULY 2ND..... 7/2.. * short period rainfall 0.41 in 3 mins.; 0.50 in 5 mins.; 0.80 in 10 mins. 0.86 in 15 mins.... DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR JULY 23 HIGH 99F IN 1952 LOW 51F IN 1923,1977 PRECIP 1.82 INCHES IN 1953 PEAK GUST 54e MPH S IN 1946 RECORDS FOR JULY 24 HIGH 96F IN 1987 LOW 49F IN 1893,1912 PRECIP 2.21 INCHES IN 1988 PEAK GUST 41 MPH S IN 1975, 41e MPH WSW 1977 TODAY'S REPORT BY: Matt Douglas