Issue link: https://www.epageflip.net/i/675091
Washington 63/53 New York 56/49 Miami 86/68 Atlanta 72/50 Detroit 61/45 Houston 80/56 Chicago 52/39 Minneapolis 63/43 Kansas City 67/43 El Paso 85/60 Denver 73/45 Billings 81/54 Los Angeles 71/56 San Francisco 65/55 Seattle 65/51 AIRQUALITYFORECAST Whatitmeans:0-50:Good; 51-100:Moderate; 101-150:Unhealthyforsensitivepeople; 151+:Unhealthyforall. Source: Airnow.gov City Today'sairquality City Hi/Lo/W Hi/Lo/W CALIFORNIA CITIES National and world forecast s-sunny,pc-partly cloudy,c-cloudy,sh-showers,t-thunderstorms,r-rain,sf-snow flurries,sn-snow,i-ice City Hi/Lo/W Hi/Lo/W Summary National Extremes World Extremes North and South America Asia, Australia Africa CarsonCity Hawthorne Reno Herlong Lovelock Sacramento Yuba City Napa Ukiah Chico Corning Lakeview Alturas Susanville Redding Red Bluff Laytonville Fort Bragg Point Arena Eureka Redway Mount Shasta Yreka Crescent City Ashland Shown is today's weather. Temperatures are today's highs and tonight's lows. Shown are today's noon positions of weather systems and precipitation. Temperature bands are highs for the day. ALMANAC Precipitation Temperatures ALLERGY REPORT Pollenlevels Source: National Allergy Bureau TODAY'S UV INDEX (The higher the number, the faster skin damage will occur.) Extreme Very high High Moderate Low SUN SETTINGS, MOON PHASES Sunrise Sunset Moonrise Moonset Hoursofsunlight River Levels SacramentoRiver Flood 7a.m. 24-hr Stage yest. chg. Lake Levels Elevation Yesterday Storage (acre-feet) Percent Capacity Q: A: THURSDAY 75° 56° FRIDAY 78° 56° Va riable clouds with a t‑storm Mostly cloudy with a t‑storm SATURDAY 74° 57° Cool with periods of sun SUNDAY 78° 58° Pa rtly sunn y and pleasant TODAY 79° 55° Cloudy with a shower or thunderstorm in the area. A stray evening shower; otherwise, mostly cloudy tonight. High ....................................................................... 80° Low ........................................................................ 54° Normal high ......................................................... 77° Normal low ........................................................... 51° Record high ............................................. 98° in 2013 Record low .............................................. 36° in 1950 Humidity noon today ........................................ 47% 24 hours through 2 p.m. yesterday ................. 0.00" Month to date ................................................... 0.00" Normal month to date ..................................... 0.15" Season to date ................................................ 21.59" Normal season to date .................................. 22.35" Red Bluff through 2 p.m. yesterday Chico .................................................................. Good Napa ..................................................... Not available Red Bluff .............................................. Not available Redding ............................................... Not available Yuba City ........................................................... Good Allergy, dust and dander today: Beneficial Grass ...................... High Mold .........................Low Trees ............. Moderate Weeds ..................... Low 5 Highest at 12 p.m. Today 6:05 a.m. 8:07 p.m. 4:55 a.m. 5:51 p.m. Thursday 6:04 a.m. 8:08 p.m. 5:34 a.m. 7:04 p.m. 14 hr., 02 min. May6 New May13 First Full May21 Last May29 aboveBendBridge......................27 ...........2.00 .......none atHamiltonCity.........................148 ......128.60 ....... -0.10 atOrdFerry................................114 ........96.17 ....... -0.07 atRedBluffDiversionDam.......253 ......238.40 .......none atTehamaBridge ......................213 ......201.00 .......none atVinaWoodsonBridge............183 ......166.82 ....... -0.06 BlackButte ....................460.53..............85,645 .....59.6% LakeOroville..................891.55.........3,405,815 .....91.1% LakeShasta .................1056.06.........4,233,396 .....93.0% LakeTrinity..................2302.70.........1,494,356 .....56.4% Whiskeytown...............1208.72............237,005 .....98.3% Weather Trivia ™ 7.8 inches is a world rainfall record for 15 minutes or one hour? 15 minutes; Plumb Point, Jamaica, May 12, 1915. Today Thursday Anaheim 71/55/pc 67/53/t Bakersfield 86/55/pc 75/56/t Chula Vista 68/55/pc 67/54/t Crescent City 60/50/c 60/49/sh Death Valley 100/67/pc 92/59/pc Eureka 61/51/sh 61/50/sh Fremont 70/55/c 67/53/t Fresno 82/55/c 74/54/t Glendale 72/51/pc 66/51/t Huntington Beach 66/57/pc 64/55/t Irvine 68/56/pc 65/55/t Lake Tahoe 59/37/t 50/34/t Long Beach 68/57/pc 67/56/t Los Angeles 71/56/pc 67/55/t Mammoth Mountain 62/33/c 57/31/sh Modesto 81/55/c 73/54/t Monterey 64/53/c 63/51/t Moreno Valley 78/51/pc 67/48/t Napa 71/52/c 68/51/t Needles 99/72/pc 91/63/pc Oakland 68/55/c 67/53/t Oxnard 66/54/pc 64/51/t Redding 79/56/sh 75/56/t Riverside 78/51/pc 67/49/t Sacramento 77/54/c 72/51/t San Bernardino 79/51/pc 69/49/t San Diego 68/58/pc 68/58/t San Francisco 65/55/c 65/52/t San Jose 71/55/c 69/53/t San Luis Obispo 68/52/c 67/50/t Santa Ana 67/57/pc 65/56/t Santa Barbara 67/51/pc 64/50/t Santa Clarita 75/49/pc 68/49/t Stockton 79/53/c 73/51/t Ventura 66/52/pc 63/51/t Yosemite Valley 69/43/c 60/40/t Today Thursday Albuquerque 75/50/s 80/55/pc Atlanta 72/50/pc 65/51/pc Baltimore 61/48/sh 60/49/r Boston 52/45/c 51/48/c Buffalo 64/46/c 63/47/r Chicago 52/39/c 60/44/pc Cincinnati 59/43/t 62/46/c Dallas 81/55/s 80/57/s Denver 73/45/s 79/50/pc Detroit 61/45/t 66/46/pc El Paso 85/60/s 90/63/pc Fargo 68/48/s 84/57/s Honolulu 85/74/pc 85/72/pc Houston 80/56/s 81/54/s Indianapolis 56/41/t 62/43/pc Kansas City 67/43/s 72/50/s Las Vegas 91/68/pc 86/57/pc Louisville 62/46/t 65/49/pc Miami 86/68/t 85/65/s Minneapolis 63/43/s 75/56/pc New Orleans 78/63/s 79/60/s New York City 56/49/sh 59/52/r Oklahoma City 78/48/s 78/53/s As warm and humid air holds, severe thunder- storms will hit portions of the Florida Peninsula today. Dry air will allow some sunshine from the central Gulf Coast to the balance of the southern Atlantic Seaboard today. Meanwhile, showers and thunderstorms will increase in coverage and intensity from the Ohio Valley and Great Lakes region to the central Appalachians and coastal Northeast. A new batch of cool air will drop southward over the Upper Midwest. The vast majority of areas from the Plains to the Rockies and Southwest can expect sunshine. High ............................ 96° in Thermal, CA Low ................. 8° in Hohnholz Ranch, CO High ....................... 115° in Kharga, Egypt Low ... -32° in Summit Station, Greenland Bogota 63/51/c 65/51/t Buenos Aires 64/46/pc 63/49/sh Caracas 87/76/pc 88/78/t Ensenada 73/55/s 68/55/pc Mexico City 83/55/t 80/53/t Montreal 60/44/pc 61/45/pc Rio de Janeiro 81/69/pc 79/69/pc Tijuana 70/56/s 67/53/pc Toronto 61/44/c 62/45/r Vancouver 61/48/c 65/49/pc Orlando 78/62/t 80/57/s Philadelphia 58/49/sh 62/52/r Phoenix 100/72/s 95/66/pc Pittsburgh 64/48/t 62/48/r Portland, ME 53/41/c 52/42/c Portland, OR 67/52/sh 73/51/pc St. Louis 67/46/pc 68/49/s Salt Lake City 82/60/pc 83/60/t Seattle 65/51/sh 69/52/pc Tucson 97/64/s 94/60/pc Washington, DC 63/53/c 60/52/r Cairo 85/66/pc 87/65/s Casablanca 80/62/c 73/58/pc Johannesburg 69/42/s 70/45/s Kinshasa 88/74/c 88/74/c Lagos 90/81/c 91/80/c Nairobi 77/59/pc 76/61/pc Tripoli 78/55/s 82/64/pc Baghdad 103/73/pc 93/73/c Beijing 82/53/pc 81/52/pc Hong Kong 84/79/sh 87/78/t Jerusalem 70/53/c 74/55/s Kabul 69/46/pc 76/48/s Manila 97/83/s 95/83/pc Melbourne 63/56/pc 69/60/c New Delhi 107/77/t 103/78/t Seoul 68/49/s 76/60/s Singapore 93/79/c 90/79/c Sydney 73/56/s 74/57/s Tehran 85/68/pc 87/67/c Tokyo 74/63/r 74/62/s Amsterdam 60/43/pc 66/48/pc Athens 71/57/t 64/54/t Belgrade 62/48/sh 68/48/pc Berlin 57/41/pc 64/46/s Budapest 69/50/sh 71/48/pc Dublin 58/45/pc 57/44/pc London 63/44/s 67/50/pc Madrid 80/56/pc 71/51/t Moscow 66/43/pc 56/43/r Paris 63/42/pc 68/46/s Rome 73/51/t 71/50/s Stockholm 65/42/pc 63/42/s Vienna 53/46/sh 64/45/pc Zurich 58/37/pc 66/40/s 68/43 77/47 73/48 71/47 81/49 77/54 80/54 71/52 75/48 79/56 78/55 66/42 68/45 67/47 79/56 79/55 70/48 61/52 61/50 61/51 71/50 67/45 70/47 60/50 70/51 Forecasts and graphics provided by AccuWeather, Inc. ©2016 CHRISLANGDON—THEUNIVERSITYOFMIAMI The Carysfort Reef in Florida in 1976and 2016. BySethBorenstein The Associated Press WASHINGTON Seawater— increasingly acidic due to global warming — is eating away the limestone frame- work for the coral reef of the upper Florida Keys, accord- ing to a new study. It's some- thing that scientists had ex- pected, but not so soon. This is one of the first times scientists have docu- mented long-term effects of ocean acidification on the foundation of the reefs, said studyauthorChrisLangdon, a biological oceanographer at the University of Miami. "This is what I would call a leading indicator; it's tell- ing us about something hap- pening early on before it's a crisis," Langdon said. "By the time you observe the corals actually crumbling, disappearing, things have pretty much gone to hell by that point." The northern part of the Florida Keys reef has lost about 12 pounds per square yard (6.5 kilograms per square meter) of limestone over the past six years, ac- cording to the study pub- lished in the journal Global Biogeochemical Cycles. Over the length of the reef, that's more than 6 million tons. The water eats away at the nooks and crannies of the limestone foundation, mak- ing them more porous and weaker, Langdon said. So far the effect is subtle, not noticeable to the eye, and can only be detected by intricate chemical tests. But as ocean acidification increases, scientists expect more reefs to dissolve and become flatter, and that fish will leave, Langdon said. Also, increasing acid- ity eats away at the shells of the shellfish, making them easier prey for other fish and harder for humans to har- vest. Acidification occurs when oceans absorb more carbon dioxide from the air, alter- ing seawater chemistry. Sci- entists expected limestone to dissolve, but not until the second half of this century. It's about 40 years early, Langdon said. "This is another one of those cases where we're finding that we're underes- timate the level of damage caused by excess carbon di- oxide in the atmosphere," said National Oceanic and Atmospheric Administra- tion reef watch coordina- tor Mark Eakin, who wasn't part of the research. Eakin and two other out- side experts said the study made sense. But NOAA's Derek Manzello, a scientist in the ocean acidification program who studied the same area earlier, said it is difficult to blame the foun- dation loss just on ocean acidification, because long- term coral bleaching and death will also cause the limestone to dissolve. There's a natural cycle of limestone production on reefs. Limestone generally grows faster in the summer as the water become less acidic and ocean life absorbs carbon from the ocean. But in the winter and fall, life dies off, carbon is released andthewaterbecomesmore acidic naturally, slowing or stopping limestone growth. But "to actually see a negative was a big sur- prise," Langdon said. Ex- tra, man-made carbon di- oxide is being absorbed by the water and adding to its acidity. And it's worse in the northern parts of the Keys, because the colder the wa- ter, the more carbon diox- ide dissolves into it, Lang- don said. 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