The Mother’s Day weekend storm brought late-season weather misery to much of the country over the weekend, and continues to cause trouble in the Northeast US. And, it looks like the rainy weather is likely to continue.

The storm initially caused tornadoes in Oklahoma and Missouri before moving into Georgia early Sunday morning. The Atlanta area was placed under a tornado watch as early as Saturday afternoon and the storms struck overnight, with two EF2 tornadoes striking in Carroll and Douglas counties shortly after 4 AM. It had a 25 mile long path, and caused large scale property damage.

An hour later, a third tornado tore into Clayton county near I-675. Also an EF2, this storm had a 13 mile track into Henry, Rockdale and Newton counties with wind speeds of up to 130 MPH. Further south, yet another EF2 tornado caused considerable damage in the city of Macon when it went through Bibb and Twiggs counties, including destroying two businesses and creating a lot of damage at Macon State College.

The fifth tornado caused one death and three injuries as it moved through Laurens county north of Dublin around 6:30 AM. It destroyed several mobile homes in its seven mile path. It was also an EF2. Another tornado touched down near Vidalia around 7:30 AM, and the Weather Service thinks that more tornadoes may have touched down elsewhere in the state.

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It’s been about ten days since I last posted. I guess you can blame the lack of posting on a combination of chamber of commerce weather in the Atlanta area, my trying to get the garden in shape and a busy April that is taking me out of town three times this month.

There really hasn’t been much to complain about the weather since the cold threat back on April 14-15.  Even that turned out to be a bust, with temperatures hovering just above freezing. We seem to have settled into a pattern of beautiful weekday weather, with a cold front coming in on the weekend to bring rain.  It looks like that pattern might continue for another week or two.  Rain is expected both this weekend and next. It’s bad news for the weekend gardener trying to plant annuals in wet soil.

Of course, wet soils are the least of the problems for much of the Midwest and Northeast, which have been inundated with precipitation, leading to flooding.  Missouri had its second wettest March ever.  Cape Girardeau, Missouri had 13.84 inches of rain in 48 hours last month–about what the Atlanta area has seen all year.  Pennsylvania and New York had their third wettest March since recordkeeping began.  Georgia ended up having its 36th driest month, however it appears that for a change, the northern half of the state had closer to normal rainfall than the southern half.

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Gwinnett County today revised its watering restrictions to allow hand watering as permitted by state guidelines, but held off on making changes to its policy for watering of professionally installed landscaping.

As you may remember, in mid-February, the county revised the watering restrictions it had put in place in December to allow filling of swimming pools. It also modified its rules regarding watering of professionally installed landscaping to allow watering on 10 days within 30 days of installation if a sign was posted and the homeowner had completed an online course. The county’s guidelines were set to expire on March 31st.

In March, the county commission delegated the authority for managing watering restrictions during the drought to county administrator Jock Connell. He decided today to relax the restrictions on hand watering to those allowed by the state. That means you can use a hose with a hand-activated nozzle to water your plants for up to 25 minutes three days per week, on an odd-even schedule. People with even numbered addresses can water on Monday, Wednesday and Saturday, while people with odd numbered addressed can water on Tuesday, Thursday and Sunday. All watering must be done between midnight and 8 AM. Food gardens can be watered anytime, and the you are not allowed to use your 25 minute window to wash your car.

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Some folks in North Georgia got an unusual late March sight: snow flurries fell briefly this afternoon.  Although it was 45 degrees outside, much colder air aloft combined with lower pressure caused by a short wave passing through squeezed out just enough moisture for the flakes, which melted on contact with the ground. Temperatures today are 20 degrees cooler than normal, and the northern two thirds of the state will see a freeze tonight.  If you succumbed to the spring planting urge over the weekend, either bring your plants in, or at least cover them over.

Tonight’s freeze won’t be anywhere near as bad as the Easter Freeze of 2007. though.  Not only is it likely to be a bit warmer than the 28 degrees recorded last April, but not as many plants have started to bloom. A freeze in late March isn’t too unusual.  For metro Atlanta, the typical last frost occurs sometime between April 1st and April 15th.

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The last 24 hours have brought perhaps the most significant severe weather to North Georgia since the Dunwoody tornadoes back in April, 1998.

National Weather Service officials said that a F2 tornado touched down at Simpson Road and Burbank Drive just west of the Georgia dome at 9:38 PM Friday night. The 200 yard wide twister traveled through downtown Atlanta and proceeded about six miles, until it ended at Braeburn and Josephine Roads in DeKalb County.

There was extensive damage to the Georgia Dome, where viewers of the SEC Basketball tournament were surprised when things began to sway. Additional damage was reported throughout downtown, including the CNN building and Centennial Olympic Park. Fortunately, no one was killed in the evening storm. You can read about the storm here, here and here.

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