BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY CLIMATE SUMMARY TUESDAY, JULY 13, 2004 ALL TIMES ARE IN EASTERN DAYLIGHT TIME [unless otherwise noted] TODAY'S DISCUSSION AT 2 P.M. COOL AND WET WEATHER TODAY BUT NOT MUCH RAINFALL.... Low clouds and heavy fog have enveloped the summit by 2 p.m. today. Low and a heavy cloud cover and east winds have held the temperatures down to very cool levels with a high of only 64 degrees through early this afternoon. The reading had fallen to a very cool mid-summer afternoon reading of just 61 degrees by 2 p.m. along with almost tenth of an inch of rain. A few light showers before dawn have been followed by periods of light rain later this morning into this afternoon. TODAY'S MANUAL OBSERVATIONS.... 7/13/2004 TUE 8 a.m. overcast conditions with 20 miles visibility and hazy; temp. 63; dewpoint 55; wind se 9 mph; six hourly min. temp. 61 deg. BHO SA 1155 E65 OVC 20 163/63/55/1308/001/ FEW SC N-NE BRGHT SPTS IOVC ENE-SE SUN OCNL DMLY VSB HAZY/ 8/57/ 51002 10063 20061 11 a.m. scattered at 1500 and overcast at 3500 with 8 miles visibility and thin fog with light rain; temp. 63; dewpoint 60; wind ene at 13 mph; 3-hourly rainfall .01 ins. BHO SA 1455 E15 SCT 35 OVC 8 R- 156/63/60/0711/999/ THN F ALQDS/ 8/72/ 56007 MANUAL 6001/ ASOS 60001 2 p.m. obscurement with variable visibility 1/16 variable 1/8 with heavy fog and light rain; temp. 61; dewpoint 61; wind ene at 15 mph; 6-hourly max temp. 64 deg.; 6-hourly precip. .08 ins. BHO SA 1755 W3 X 1/16VR-F 137/61/61/0713/993/VSBY 1/16V1/8/ 8//// 56019 MANUAL 6008/ ASOS 60008 10064 20061 WEATHER SUMMARY FOR MONDAY JULY 12: TEMPERATURE (DEGREES F) MAX.....76 NORMAL.....81 HAZEN SHELTER: 75.6 @ 2:50 p.m. MIN.....59 NORMAL.....62 HAZEN SHELTER: 59.0 @ 5:24 a.m. MEAN....68 NORMAL.....72 DEPARTURE FROM 30-YEAR NORMAL.........-4 TOTAL DEPARTURE FOR THE MONTH.........-15 JULY IS AVERAGING 1.5 DEGREES COOLER THAN NORMAL PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY.........24 S AT 3:57 p.m. AEROVANE..........28 S AT 3:57 p.m. ASOS..............24 S AT 3:58 p.m. DAVIS.............28 S AT 3:58 p.m. ASOS 2-MINUTE.....20 S AT 3:53 p.m. FASTEST MILE......19 S AT 3:54 p.m. OUR AVERAGE....... 11.0 MPH S ASOS AVERAGE...... 11.8 MPH S [190 deg.] DAVIS AVERAGE......11.7 MPH SSW [200 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EDT) TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....TRACE DEPARTURE....-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........2.29 DEPARTURE....+0.83 ASOS..............2.31 TOTAL PRECIPITATION FOR THE YEAR..........25.16 DEPARTURE....-1.97 ASOS.............23.57 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 ...MORNING LOW 61; no sunshine today... 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 12 HIGH 97F IN 1943 LOW 48F IN 1945 PRECIP 1.43 INCHES IN 1975 WIND 48e MPH SSW IN 1944 RECORDS FOR JULY 13 HIGH 95F IN 1894 LOW 52F IN 1888, 1895, 1939, 1973 PRECIP 3.54 INCHES IN 1996 WIND 55 MPH SE IN 1996 RECORDS FOR JULY 14 HIGH 98F IN 1952 LOW 51F IN 1895, 1937 PRECIP 1.97 INS IN 1960 WIND 110e MPH NW IN 1942 [RECORD FOR MONTH] RECORDS FOR JULY 15 HIGH 94F IN 1995 LOW 50F IN 1929, 1930 PRECIP 1.64 INS IN 1896 WIND 71 MPH WNW IN 2002 RECORDS FOR JULY 16 HIGH 94F IN 1968, 1980, 1983, 1999 LOW 50F IN 1889, 1903 PRECIP 0.89 INS IN 1919 WIND 48e MPH SW 1944 TODAY'S REPORT BY: Kim Jeffs/Robert Skilling