The Washington, DC area is recovering from its second major snowstorm of the season. At Dulles Airport, the 32.4 inches of snow was the highest two-day total ever recorded. 17.8 inches of snow was measured at Reagan National Airport. That was the second highest total recorded at that location, and the fourth highest total snowfall recorded in Washington. (26 inches was the record DC snowfall, in 1922.)

While the Baltimore airport only recorded 24.8 inches of snow, just to the northwest, in Elkridge, they seem to have gotten more snow than anywhere else, with 34.8 inches.

The bad news for the Washington area is that they are again under a winter storm warning, with a prediction of an additional 10 to 20 inches between noon Tuesday and Wednesday evening. In Atlanta, the storm will only be rain, with the possibility of some snow in the Northeast Georgia mountains.

The real threat for Georgia is this weekend. when another in the series of storms comes barreling north. Some models are indicating several inches of snow, with the snowfall possibly extending into middle and south Georgia. There’s not a lot of confidence in the forecast yet, which is why the early forecast for the weekend doesn’t mention it. But, the models are best at the predictable, and this winter has certainly not been that. Keep your eyes on the forecast as it gets closer to Friday.

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We are now just one week away from the start of winter. You may think winter begins on December 20th, the shortest day of the year, but from a weather perspective, winter is the three month period of December, January and February. We’ve enjoyed a relatively mild (albeit wet) fall, with temperatures yet to drop below freezing in the metro Atlanta area, but that will change soon.

The latest predictions from the weather service for winter are pretty much in line with earlier forecasts. Much of the South and Mid-Atlantic states have a 40% chance of colder than normal weather, while the upper Midwest and northern states should be warmer than normal. This is a typical winter pattern in El Nino years like we have this year.

The precipitation forecast also reflects typical El Nino conditions, with wetter than normal conditions stretching from California along the southern US border to South Carolina, and drier than normal conditions centered over Tennessee and Kentucky. This puts Georgia right in the middle, with the north likely dry, normal in the middle, and wet in the south. Exactly where the dry/wet lines fall could make a big difference in how the weather plays out.

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If you’re like me, you are probably sick of all the rain we’ve had over the past month or so. The good news, in addition to less rain today than predicted, is that the weather is going to change beginning on Friday. The bad news is that we are going to get cold.

A front passes through on Friday, blowing out all the rain and tropical air. Behind the front is some of the Canadian air that has been causing some record cold temperatures in the upper Midwest. And, because of a Nor’Easter that will be bringing snow to Pennsylvania and points north, the cold air will be driven further south than it might otherwise have been. The low temperatures forecast for the weekend were in the mid 40s earlier this week. Tonight’s zone forecast calls for temperatures around 40 Saturday and Sunday nights.

But, if you look at the GFS modeling, it’s calling for temperatures around freezing Monday morning in Atlanta, and in the upper 20s for Athens. Will we get there? The record low in Atlanta is 34 for Saturday, 31 for Sunday and 35 for Monday. The normal first freeze in Atlanta is November 10th, about three weeks away. We may not be breaking any records this weekend, but I wouldn’t be surprised if we did end up below 40 degrees. If your furnace has a pilot light, you might want to check it and/or turn it on.

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Much of the southeast US has been caught up in a blocking pattern over the past few days, with an upper level low pressure system stuck over the Mississippi/Louisiana area causing wet, tropical air to be brought up from the Gulf of Mexico. While there’s no tropical storm bringing in all this precipitation, the effects are much the same.

In fact, the three day total rainfall I’ve recorded at my home of 4.45 inches is the largest three day total since exactly five years ago on September 16-17, 2004, when 4.73 inches of rain fell as the remnants of Hurricane Ivan came through the state. And it’s possible that we’ll get even more rain later today to beat that record.

Rainfall amounts are varying widely across north Georgia. While I don’t yet have official readings for today, yesterday, Atlanta recorded .76 inches of rain, while I received 2.23 inches. Other areas with a lot of rain yesterday include Chamblee with 1.99 inches and Charlie Brown field with 1.16 inches.

Unfortunately, the rain is going to stick around through the weekend and possibly into the first part of next week before we get to a dry spell. With the ground already saturated from rain, much of Georgia from the Atlanta metro area south has been placed in a flood watch until Saturday morning. As of now, there are no reports of flooding, but it’s certainly possible.

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If it seems pretty warm out there, you’re right. Today’s high temperature of 95.1 in Lawrenceville at 2:20 PM makes it the warmest day of 2009 so far. Of course, the 93-95 degree high temperatures we’ve had for the last two weeks are 5-8 degrees above normal. In Atlanta, it’s been over ten days since the low temperature dropped below 70 degrees, another sign of a heat wave. For the month to date, Atlanta is 2.9 degrees above normal, with an average temperature of 79.5. In Lawrenceville, where nighttime temperatures don’t have the same heat island effect as Atlanta, the average is 77.4 degrees.

All of this isn’t being helped by the lack of rainfall — none here in the last two weeks. Now I know that it has rained in places around Atlanta — just not here. Rain chances increase from this afternoon to tomorrow evening, but after a cold front passes through Sunday night, it’s back to warmer than normal temperatures and dry weather for the work week.

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