BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, MAY 23, 2014 ALL TIMES ARE IN EASTERN STANDARD TIME SHOWERS YESTERDAY AFTERNOON WRAP UP THIS MORNING WITH CONTINUED FOGGY AND HUMID CONDITIONS Rain showers began yesterday afternoon at 12:24 PM EST increasing in intensity over the couple of hours. Another round of showers and drizzle this morning combined with yesterday's precipitation totaled 0.31 inches. Fog has dissipated and reformed throughout the day with rain showers re-entering the picture by this afternoon's 1:00 PM EST observations. BHO IN THE NEWS: Blue Hill Observatory and Science Center played host to NECN's Chief Meteorologist Matt Noyes this morning, showcasing the history and people that make BHO so special. A big thanks to the whole NECN crew for spending their morning with us! Today's Observations: 7 A.M. Weather: Partial fog, broken stratocumulus, overcast altocumulus, fog below station in all directions and dissipating, breaks in overcast distant S Temperature: 54F; Dew Point: 52F; Wind: SE at 1 kts Wind Speed and Direction: Light and variable Sea-level pressure: 29.91 ins. Hg, increasing, then more slowly Visibility: 6 miles, 3 miles NW-NE, 8 miles S, obscured by fog 6-hr max temp: 54F 6-hr min temp: 52F 24-hr precip: 0.31 BHO SA 1155 E20 BKN 50 OVC 6F 130/54/52/E1401/991/ FG BLOW STA ALQDS FG DSPTNG VSBY NW-NE 3 MI VSBY S 8 MI BINOVC BRKS DSNT S WND LGT AND VRB/ 8/51/ ASOS 70031 MANUAL 70031 10054 20052 10 A.M. Weather: Overcast stratus, few stratus fractus distant NNE Temperature: 57F; Dew Point: 54F; Wind: E at 4 kts, Wind Speed: Light Sea-level pressure: 29.92 ins. Hg, increasing, then more quickly Visibility: 25 miles, 12 miles SW-N, obscured by thin fog BHO SA 1455 E16 OVC 25 133/57/54/E0804/992/ FEW STFRA DSNT NNE VSBY SW-N 12 MI THN FG ALQDS WND LGT/ 8/6// 53008 1 P.M. Weather: Scattered stratocumulus, broken stratus, broken altostratus, overcast cirrostratus, showers distant SW-WNW Temperature: 57F; Dew Point: 51F; Wind: NE at 7 kts, Sea-level pressure: 29.91 ins. Hg, decreasing, then steady Visibility: 30 miles, 15 miles SW-WNW, obscured by rain showers and thin fog in all directions 6-hr max temp: 60F 6-hr min temp: 53F 6-hr precip: none BHO SA 1755 13 SCT E40 BKN 130 BKN 240 OVC 30 130/57/51/0507/991/ SHWRS DSNT SW-WNW VSBY SW-WNW 15 MI THN FG ALQDS/ 8/626/ 56003 10060 20053 WEATHER SUMMARY FOR THURSDAY, MAY 22, 2014 TEMPERATURE (DEGREES F) MAX.....67 NORMAL.....68 MIN.....51 NORMAL.....50 MEAN....59 NORMAL.....59 DEPARTURE FROM 30-YEAR NORMAL..........................+0 TOTAL DEPARTURE FOR THE MONTH.........................+72 [+3.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............6 DEPARTURE..........-1 TOTAL HEATING UNITS FOR THE MONTH.............142 DEPARTURE.........-73 TOTAL HEATING UNITS FOR THE SEASON...........6313 DEPARTURE.........+63 TOTAL HEATING UNITS LAST SEASON TO DATE......5680 DIFFERENCE.......+633 COOLING DEGREE DAYS (SEASON JAN-DEC) TOTAL COOLING UNITS FOR YESTERDAY..............0 DEPARTURE..........-1 TOTAL COOLING UNITS FOR THE MONTH.............13 DEPARTURE..........+3 TOTAL COOLING UNITS FOR THE SEASON............13 DEPARTURE..........+1 TOTAL COOLING UNITS LAST SEASON TO DATE........6 DIFFERENCE.........+7 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY..................15 SSE AT 3:30 P.M * ASOS.......................17 S AT 1:57 P.M. DAVIS......................17 SE AT 1:46 P.M. RMY 18 FASTEST MILE FOR YESTERDAY....................13 SSE AT 1:50 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.................12 S AT 4:15 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE................13 SE AT 1:47 P.M. AVERAGE WIND SPEED AND DIRECTION............. 5.9 ASOS.......................6.2 DAVIS......................5.5 SSE [148 deg] * Last of several occurrences... PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.31 DEPARTURE.............+0.17 ASOS..............0.31 TOTAL PRECIPITATION FOR THE MONTH..........2.39 DEPARTURE.............-0.36 ASOS..............2.40 TOTAL PRECIPITATION FOR THE YEAR..........21.51 DEPARTURE.............+0.21 ASOS.............21.93 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE...............0.0 TOTAL SNOWFALL FOR THE MONTH................0.0 DEPARTURE...............0.0 TOTAL SNOWFALL FOR THE SEASON..............85.6 DEPARTURE.............+22.9 PRELIMINARY CLIMATE SUMMARY FOR MAY 2014 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST RMY: R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized 5/1 64/43/54/+1/0.49/0.0/093/11 32 SSE RMY 36 5/2 68/51/60/+7/T/0.0/457/54 28 W RMY 29 5/3 66/48/57/+4/0.00/0.0/332/39 21 SW RMY N/A 5/4 60/47/54/0/0.01/0.0/400/47 51 WNW RMY 54 5/5 64/46/55/+1/T/0.0/592/70 30 NW RMY 32 5/6 63/42/53/-1/T/0.0/506/59 30 NW RMY 30 5/7 64/42/55/0/0.00/0.0/850/99 21 WNW RMY 23 5/8 69/48/59/+4/0.00/0.0/612/71 17 SSW RMY 19 5/9 57/51/54/-1/0.05/0.0/000/00 21 S RMY N/A 5/10 78/57/68/+13/0.10/0.0/043/05 33 S RMY 37 5/11 79/58/69/+13/0.01/0.0/746/86 30 W RMY N/A 5/12 85/49/67/+11/0.00/0.0/792/91 39 NE RMY 42 5/13 54/42/48/-8/0.00/0.0/113/13 32 NE RMY N/A 5/14 73/42/58/+1/T/ 0.0/613/70 22 S RMY 24 5/15 77/57/67/+10/T/0.0/140/16 27 S RMY 33 5/16 73/60/67/+10/0.26/0.0/.../.. 36 S RMY 41 5/17 74/52/63/+6/1.04/0.0/.../.. 36 SSE RMY N/A 5/18 67/47/57/-1/0.00/0.0/.../.. 20 NW RMY N/A 5/19 65/48/56/-2/0.12/0.0/.../.. 35 NNW RMY 38 5/20 71/48/60/+2/T/0.0/.../.. 25 NNW RMY 26 5/21 71/51/61/+2/0.00/0.0/.../.. 18 ESE RMY 20 5/22 67/51/59/0/..../0.0/.../.. 15 SSE RMY 18 5/23 morning low temp: 52F; the normal low is now 50F DAILY RECORDS FOR MAY 2014 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR MAY 23 HIGH 92F IN 1964,1992 LOW 38F IN 1976 PRECIP 0.97 INS IN 1979 PEAK GUST 49e MPH W IN 1945 RECORDS FOR MAY 24 HIGH 92F IN 1964 LOW 35F IN 1956 PRECIP 2.13 INS IN 1951 PEAK GUST 54 MPH NNE IN 2005 TODAY'S REPORT PREPARED BY: Brian Fitzgerald