First Alert Weather Alert: Flood Warning expires at 10:04 PM on 4/24, issued at 10:04 PM Blackshear, GA | Bristol, GA | Mershon, GA | Millwood, GA

More Rain... Wind Shift=Less Rain... MJO & the Tropics... "Earth Gauge": Waterways, Climate 2012, Estuaries

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Updated: 8/16/2013 10:11 pm

Click ** here ** for detailed tropical updates - "Talking the Tropics With Mike"....click ** here ** to download the free First Alert Weather iPad App.

Not a washout this weekend, but it will rain.  Rain will be heaviest & most widespread Sat. but there will still be dry periods with some sun but, of course, sky high humidity.  Showers & storms will become more scatterd Sun. & push more inland -- west of I-95 in the afternoon as surface winds become more E/SE.  This change in the winds will continue through the middle of the week -- onshore or from the E/SE.  Such a wind pattern translates into scattered morning showers @ the beaches & near the coast then scattered afternoon inland showers & t'storms.  The overall pattern is not as wet but is still hot & humid with highs ranging from the mid to upper 80s at the beaches to low to
mid 90s inland.

MJO-No.... The MJO - Madden-Julian Oscialltion is getting ready to ramp up.  This phenomenon is a combination of atmospheric circulation and heavy rain/t'storm cluster that originate in the W. Pacific & then propage eastward.  When the MJO begins to work eastward (generally a 1-2 months cycle that is then followed by suppressed convection), it can be a signal of an uptick in tropical activity during the hurricane season.  Aftern taking its sweet time the last few weeks, it would appear the MJO is about to take off, & the GFS forecast model is indeed showing an uptick in deep tropical activity the last week or so of August that would likely continue into at least early Sept.  Stay tuned!  Click ** here ** to read more about the MJO including a definition & forecasts.

Earth Gauge: Waterway Invasive Introductions: By Boat
An invasive species is one that is introduced to areas that are not part of its natural range, where it may not have any natural enemies to keep its population in check. Invasive plants and animals can wreak havoc on natural areas, causing economic, environmental and even human health impacts. Invasive species are especially disruptive and prevalent in aquatic environments because of how easily they are able to spread through connected watersheds. Often, it’s humans who accidentally transport and introduce invasive species into new environments.

Recreational boating in unconnected waterways is one way that invasive species are spread to new places. Bivalves such as zebra mussels and aquatic plants such as milfoil can latch onto or get snagged on boat hulls, anchors, fishing gear, diving equipment or any other surface that spends extended periods of time in the water. Plant and animal larvae are commonly found in bilge water or engine water and can easily be discharged in very different locations from where they were picked up. Green crabs are able to survive in larval form for 90 days, making it likely that they could go unnoticed in between boating trips.  Boat trailers can sometimes act as carriers after only brief contact with the water.

Tip: When transporting boats or any other gear from one body of water to another (or even to store on land before transporting at a later date), wash surfaces that have been in contact with the water. For boats that were in contact with the water for longer periods of time, check for mussels, barnacles and algae that may have grown on the hull and scrape off all remnants before returning the boat to any water source. It only takes a small amount of water to transport an invasive plant or animal that could lead to irreparable change.

By learning more about invasive species in your area, you can help control their spread and protect the rivers, lakes and oceans near you. Find out more about invasive species.

(Sources: U.S. Environmental Protection Agency. “Pathways for Invasive Species Introduction.”; Emily Darbyson1, Andrea Locke2*, John Mark Hanson2 and J. H. Martin Willison1. “Marine boating habits and the potential for spread of invasive species in the Gulf of St. Lawrence.”  Aquatic Invasions (2009) Volume 4, Issue 1: 87-94)

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Climate Fact: State of the Climate in 2012 

The National Oceanic and Atmospheric Administration (NOAA) recently released the State of the Climate in 2012 report, published by the American Meteorological Society (AMS).  The report was compiled by 384 scientists from 52 countries, and summarizes global climate indicators, weather events and data collected by monitoring stations around the globe.

Report highlights include:

• 2012 was among the ten warmest years on record. Temperatures across global land surfaces ranked among the ten warmest on record. Sea surface temperatures were among the eleven warmest on record. Heat content in the upper 2,300 feet (700 m) of the ocean remained near record high levels in 2012.
• For the first time in years, El Niño did not dominate climate conditions worldwide. A weak La Niña dissipated during spring of 2012. Neither El Niño nor La Niña prevailed during the majority of 2012.
• September 2012 saw a new record low minimum sea ice extent in the Arctic (1.32 million square miles), whereas a new record high maximum sea ice extent was reported for Antarctica (7.51 million square miles). The Artic continues to warm at about twice the rate of lower latitudes. Artic sea ice extent was 18 percent lower than the previous record low and 56 percent lower than the record high minimum ice extent of 2.90 million square miles in 1980. Conversely, Antarctica maximum sea ice extent was 0.5 percent higher than the previous record high of 7.47 million square miles in 2006.
• Global sea level reached the highest yearly average in satellite record at 1.4 inches above the 1993-2010 average. Oceans were also saltier than average in areas of high evaporation and fresher than average in areas of high precipitation.
• Global cyclone activity was near average, with a total of 84 storms. The North-Atlantic region was the only hurricane basin with above-normal activity. Sandy devastated Cuba and parts of the North American seaboard.

Download the complete State of Climate in 2012 report here (BIG PDF file).

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Climate in the News: “Climate Change Threatens U.S. Estuaries” – ScienceDaily, August 7, 2013The nation's 28 National Estuarine Research Reserves (NERR) are experiencing the negative effects of human and climate-related stressors.

Have a great & safe weekend!

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