BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS 02186 ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, MAY 27, 2005 ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted] TODAY'S OBSERVATIONS 7am BHO SA 1155 E10 OVC 2 061/50/50/2910/971/ STRA DRFTG OVR SMT VSBY W 1 VSBY E 10 FEW BINOVC DSNT NE-E/ 8/4// 51016 70029 10050 20049 10am BHO SA 1455 E10 BKN 15 OVC 50 065/54/50/2810/972/ BINOVC N-NE HIER CLDS VSBL/ 8/4// 51009 1pm BHO SA 1755 30 OVC 75 065/58/50/2708/972/ FEW BRGT SPTS IOVC/ 8/5// 53000 10058 20050 WEATHER SUMMARY FOR THURSDAY, MAY 26: TEMPERATURE (DEGREES F) MAX.....49 NORMAL.....70 ASOS MAXIMUM 49F AT MIDNIGHT P.M. MIN.....43 NORMAL.....50 ASOS MINIMUM 43F AT 6:13 A.M. MEAN....46 NORMAL.....60 DEPARTURE FROM 30-YEAR NORMAL.....-14 TOTAL DEPARTURE FOR THE MONTH....-168 (-6.7 DEGREES/DAY) PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY........51 NNE AT 12:50 A.M. AEROVANE.........51 NNE AT 12:45 A.M. ASOS.............49 NE AT N/A FASTEST MILE FOR YESTERDAY..........37 NNE AT 12:50 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......33 NNE AT N/A AVERAGE WIND SPEED AND DIRECTION...16.0 N ASOS............15.4 PRECIPITATION (INCHES) ENDING 7 A.M. EST TODAY TOTAL PRECIPITATION 24 HRS ENDING 8 A.M....0.29 DEPARTURE....+0.17 ASOS..............0.29 TOTAL PRECIPITATION FOR THE MONTH..........8.21 DEPARTURE....+5.04 ASOS..............8.18 TOTAL PRECIPITATION FOR THE YEAR..........29.30 DEPARTURE....+8.33 ASOS.............28.21 PRELIMINARY CLIMATE SUMMARY FOR MAY 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 5/1 57/44/51/-1/0.14/118/14 33 MPH WNW 5/2 63/39/51/-1/0.05/593/70 43 MPH S 5/3 58/38/48/-5/0/604/71 30 MPH WSW 5/4 59/40/50/-3/T/400/47 21 MPH E 5/5 60/38/49/-4/0/777/91 23 MPH E 5/6 54/42/48/-6/0.08/103/12 26 MPH NNE 5/7 44/39/42/-12/1.19/000/00 58 MPH N 5/8 47/39/43/-11/0.22/000/00 43 MPH NNW 5/9 52/43/48/-7/0.04/026/03 36 MPH N 5/10 64/46/55/0/0/502/58 20 MPH E 5/11 75/46/61/+6/0/807/93 27 MPH S 5/12 60/41/51/-5/0/835/96 40 MPH NW 5/13 64/35/50/-6/0/846/97 28 MPH WNW 5/14 64/47/56/-1/T/288/33 21 MPH E 5/15 58/41/50/-7/0.14/132/15 24 MPH N 5/16 57/41/49/-8/0.11/193/22 21 MPH ENE 5/17 65/47/56/-1/0/343/39 21 MPH ESE 5/18 59/45/52/-6/0.01/203/23 28 MPH N 5/19 62/42/52/-6/0.05/681/77 25 MPH WNW 5/20 66/45/56/-2/0/310/35 24 MPH S 5/21 51/43/47/-12/0.31/000/00 35 MPH NNW 5/22 54/43/49/-10/0.03/009/01 30 MPH NW 5/23 48/43/46/-13/0.18/000/00 35 MPH N 5/24 45/41/43/-17/1.53/000/00 54 MPH NNE 5/25 46/41/44/-16/3.31/000/00 62 MPH NNE 5/26 49/43/46/-14/.../000/00 51 MPH NNE DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): NEW OR EQUALED DAILY RECORDS FOR MAY TO DATE: May 7 - NEW RECORD CALENDAR DAY RAINFALL TOTAL OF 1.19 INS.; the previous record was 1.15 inches in 1998 May 13 - MINIMUM TEMPERATURE OF 35 DEGREES EQUALED THE RECORD LOW TEMP. FOR THIS DATE OF 35 DEGREES SET IN 1914. May 24 - NEW RECORD LOW MAXIMUM TEMP. OF 45 DEGREES; the previous record was 46 in 2003 and two earlier years RECORDS FOR MAY 27 HIGH 92F IN 1914 LOW 36F IN 1915 PRECIP 1.40 INCHES IN 1898 PEAK GUST 55 MPH S IN 1956 RECORDS FOR MAY 28 HIGH 90F IN 1929 LOW 39F IN 1917 PRECIP 2.48 INS IN 1906 PEAK GUST 51e MPH NE IN 1946 TODAY'S REPORT BY: Andrew Hoell