Tennessee Valley Weather Blog

Wednesday 08/13/2014
Beautiful Weather Ends By Weekend

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Plenty of sunshine will be the main story in our forecast for the Tennessee Valley up until Friday, as higher pressure will build in from the North, bringing cool, dry weather. Temperatures look to stay into the mid 80's for overall highs. That's almost 5 to 8 degrees below average for this time of year.10269343_559701597467772_7621240933516461988_o

Unfortunately, all good things must come to an end as higher pressure builds to the East, we'll welcome in our next storm system from the West. Winds will tap back in from the South, causing our humidity levels to spike and temperatures to soar into the mid to lower 90's. A rather hot and humid forecast this weekend with scattered showers developing by Sunday in the forecast. 10269343_559701597467772_7621240933516461988_o

Get outside and enjoy the nice weather we'll be seeing for the next 3 days!

METEOROLOGIST LIZ COSGROVE

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Monday 08/11/2014
Goodbye Storms and Humidity, Hello Sunshine and Comfy Conditions!

Who's tired of the humidity? This weekend, a strong southerly flow of warm, moist air from the Gulf Coast had us wearing the air and plagued us with scattered showers and thunderstorms. Places such as Decatur picked up on 3 1/2 inches of rain in less than an hour, causing major flooding. Capture

We have one more wave of energy moving in from the Midwest that will pack another punch this afternoon and spark scattered showers and thunderstorms. Rain accumulations could reach up to 1 to 2 inches, causing flooding to be the biggest concern with these storms along with possible hail and vivid lightning.

CaptureA weakening southerly flow of air on Tuesday will only spark a few pop up showers for the Tennessee Valley, as winds will start to drive in from the North come Tuesday evening, funneling in drier weather that will hinder thunderstorms from pop up during the nighttime hours, and decreasing cloud cover. Tuesday night into early Wednesday morning will be our best bet to view the Perseids Meteor shower, where over 100 meteors fly through the sky in an hour span of time!Capture

Northerly winds will be our friends especially when it comes to breaking the high humidity levels over the Valley, bringing cool, drier weather to the Tennessee Valley. Expect plenty of sunshine from Wednesday to Saturday with highs only reaching to the upper 80's with dewpoints in the comfy range on our muggy meter! A well deserved break from the sticky conditions that plagued our forecast this past weekend!

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METEOROLOGIST LIZ COSGROVE

lcosgrove@waaytv.com

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Monday 08/04/2014
Heating Up, Then Storms On The Way

Expect a rise in temperatures for the beginning of the workweek this week, as higher pressure to the North of the Tennessee Valley will surpress the air and allow the sun to shine. Temperatures will quickly approach the upper 80's by lunchtime and lower 90's during the afternoon hours. Perfect weather conditions for our kids across Northern Alabama as they head back to school this week! If you do decided to hit up the pool to stay cool, remember to slap on some sunscreen as UV indices will be very high, allowing only a short amount of time to get burnt by the sun.Capture

Soupy air will return back to our neck of the woods come Wednesday, when a strong southerly flow of air will push warm, moist air in from the Gulf of Mexico. Temperatures will climb into the mid 90's on Wednesday, and with dewpoints looking to push into the lower 70's, heat indices could rise up into the triple digits! Yikes!Capture

This strong flow of southerly winds is mainly due in part to an incoming cold front, that will move ever so slowly across the Tennessee Valley from Wednesday Night until Saturday, causing on and off rain showers and thunderstorms in the forecast. The severe threat will be low, with flooding being the main concern as we could accumulate over 4 to 5 inches of rain by Saturday.

Have a great week everyone!

METEOROLOGIST LIZ COSGROVE

lcosgrove@waaytv.com

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Friday 07/25/2014
Warm Weekend With A Cool Down By Next Week

CaptureWhat a way to end the workweek folks! As higher pressure sits to our North, drier air will funnel on in to the Tennessee Valley, allowing us to see a mix of sun and clouds with comfortable conditions. Temperatures look to reach into the lower 90's for Friday and Saturday.

As we head into Sunday, the soupy weather will return back to the Tennessee Valley as a dominate southerly flow of air make things hot and humid again. Temperatures will stay into the mid 90's but the heat indices will make it feel like it's into the triple digits. With warm, moist air come the potential of thunderstorms popping up Sunday Night into Monday as an approaching cold front will provide the lift needed to trigger these thunderstorms. Some thunderstorms could produce winds gusting as high as 30 to 40 mph, small hail, minor flooding, and vivid lightning.

After this cold front passes late Monday afternoon, it will live up to it's name, causing us to drop 10 to 15 degrees below average. Overall highs look to stay into the lower 80's with more comfortable conditions in terms of humidity.

Meteorologist Liz Cosgrove

lcosgrove@waaytv.com

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Tuesday 07/22/2014
Humidity on the Rise, A Few Sticky Days Before Relief

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You'll be wearing the air today as lower pressure sitting to the South of the Tennessee Valley will be funneling in warm, humid air from the Gulf, making it a very unbearable day today.

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Dewpoints will climb into the lower 70's with temperature creeping up into the upper 80's to lower 90's. Look for a chance of isolated thunderstorms during the afternoon time with a mix of sun and clouds.

By Wednesday we'll catch a brief break in the stormy weather pattern as higher pressure will slide in for the morning and early afternoon hours. Look for a mix of sun and clouds with temperatures soaring into the lower 90's.

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Our weather pattern start to change Wednesday night and into Thursday, as a cold front from the North will bring in a round of scattered showers and thunderstorms. With mostly cloudy skies and winds driving in from the North, temperatures look to stay into the mid 80's with muggy conditions for Thursday.

Drier air will move through the Tennessee Valley Friday into Saturday, allowing ample amounts of sunshine and temperatures to soar into the lower 90's. However, with drier air in place, dewpoints will only reach into the mid 60's, making it feel more comfortable outside.

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Monday 07/21/2014
More Rain, Relief comes Wednesday

A stalling weather pattern will lead to more rain showers and thunderstorms for the Tennessee Valley for Monday and Tuesday. 

CaptureLower pressure off to the south of The Tennessee Valley is causing our weather to come from the Southeast today. Rare, but it's all due in part to the counterclockwise spin of lower pressure that'll drive in moisture from the Gulf. Primarily, Northeast Alabama will be getting the brunt of the precipitation for Monday and Tuesday. Be careful of slick roads and low visibility due to the hilly terrain of Northeast Alabama. 

Throughout the day, showers will push to the Northwest, which will allow Madison and Limestone county pick up on isolated showers throughout the day, with the Shoals and Northwest Alabama looking to receive a stray thunderstorm or two. Due to more sunshine and a lesser chance of rain, the Shoals will be the warm spot on our map for Monday and Tuesday, looking to push into the lower 90's. Humidity levels will be on the rise, making it feel very uncomfortable outside.

CaptureBy Wednesday, lower pressure will get a kick off to the East of Alabama, allowing higher pressure to move in and send in some drier weather. Look for a mix of sun and clouds Wednesday with temperatures soaring into the lower 90's for all the of the Tennessee Valley thanks to more sunshine in the forecast.

CaptureBy Wednesday night into Thursday, a cold front will push through the region, ending our nice day of sunny weather and returning the rain back in the forecast. Scattered showers and thunderstorms are expected in the forecast with breezy conditions. Highs will only reach into the mid 80's thanks to cloud cover and it'll be a muggy one out there as dewpoints look to stay into the upper 60's to lower 70's. 

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Monday 07/07/2014
Stormy Weather This Week For Tennessee Valley

CaptureHot, humid, and showers, oh my! Yes folks, welcome back to summer after a cool and comfortable 4th of July weekend. Southerly winds tap back in for the Tennessee Valley, causing temperatures to soar into the lower 90's for today's highs, causing instability and some pop up thunderstorms to develop over Northwest Alabama this afternoon.

Not much is changing for Tuesday's forecast, as we'll see more pop up thunderstorms forming over the Tennessee Valley. Brief downpours, vivid lightning and gusty winds is possible with these storms. Temperatures will warm up to the mid 90's and with dewpoints forecasted to be in the lower 70's, heat indices could climb into the triple digits. 

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By Wednesday a cold front is expected to plow through the Tennessee Valley until Thursday, bringing widespread scattered showers and thunderstorms in the forecast with mostly cloudy skies. Temperatures will drop into the mid to lower 80's thanks to cloud cover and cooler air from the downdrafts of these thunderstorms, but the humidity levels will remain high, making it a very muggy and rainy Wednesday forecast. Avoid making plans outdoors for Wednesday and Thursday.

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Friday 07/04/2014
Nice Holiday Weekend Across The Tennessee Valley

Mother Nature has been bringing relief from the hot and humid weather just in time for the Fourth of July! Higher pressure from the North is bringing in drier and cooler air, keeping temperatures anywhere between 5 to 10 degrees below average and dewpoints down into the upper 50's, making it a pleasant holiday.

CaptureIf you're venturing out to see the fireworks display across the Tennessee Valley for tonight, bringing a sweater may be a good idea as clear skies and light winds will let the heat during the day escape into the upper atmosphere, dropping our temperatures significantly from the mid 80's at 5 p.m. to the upper 60's by the time the fireworks show ends.

Heading into Saturday, we're looking to hit the replay button on our forecast. Nothing but sunshine and temperatures into the upper 80's. Make sure to slap on some sunscreen before heading to the pool or even if you're going to play golf. UV indices will be very high, meaning extreme risk of harm from unprotected sun exposure.

By Sunday, higher pressure will move over eastward, causing our winds to tap back in from the South. Temperatures will climb closer to 90 degrees, along with sticky conditions returning back into the forecast. With the southerly flow of air strengthening in our forecast for the start of the workweek, we'll begin to increase the chances of pop up thunderstorms in the forecast.

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Tuesday 07/01/2014
Tropical Storm Arthur Forms - Why It Could Mean Less Humidity for the TN Valley

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The National Hurricane Center has just classified Tropical Depression One as a Tropical Storm - its name is Arthur. It is located 95 miles southeast of Cape Canveral, Florida and is nearly stationary or moving very slowly to the northwest at 2 mph. Maximum sustained winds are 40 mph right now, but it is expected to strengthen steadily over the next several days, likely reaching hurricane status by sometime Thursday. 

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Here's the forecast path for TS Arthur. It will eventually pick up forward speed and move north-northwest, paralleling the eastern Florida coastline. It will eventually turn to the northeast as a frontal zone approaches from the west and helps steer this system away from most of the U.S. mainland. It could skirt the coastlines of North Carolina and South Carolina, but a major U.S. impact doesn't appear likely at this point. However, if you have travel plans towards the Mid-Atlantic/New England areas, watch this system closely. 

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This tropical system is actually going to have a bit of an impact on our weather indirectly. As it moves east of our area, counter-clockwise flow combined with anti-cyclonic flow associated with approaching high pressure will result in a nice, dry northeasterly wind here in the Valley. This will translate to some lower humidity values across the area Thursday afternoon into your 4th of July. Overnight lows will drop into the low 60s Thursday night and maybe Friday night as well. Daytime highs will still be in the 80s, but it should feel a little less humid out there, so enjoy the fireworks!

Isaac Williams

WAAY-TV Meteorologist

iwilliams@waaytv.com

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Sunday 06/29/2014
Mid 90s by Mid-Week, then Dry 4th of July Forecast for TN Valley

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Our weather pattern is changing to favor a hotter and drier solution at least for a couple of days. The upper air pattern shown above shows an elongated ridge of high pressure located around 18,000 feet off the ground (~500mb). Meanwhile, a large upper-level low pressure system will be lifting into the southern Canadian Provinces out of the northern Plains. The ridge of high pressure over the southern states will help suppress vertical motion in the atmosphere, and thus our rain chances have been taken out of the forecast starting on Tuesday. Highs will reach the mid 90s both Tuesday and on Wednesday as a result of this high pressure ridging. 

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By Thursday, you can definitely notice a change in the weather pattern. Troughing/lowering of mid-level heights will overspread the area late Wednesday into Thursday. As a result, a round of scattered thunderstorms will be possible at just about any time on Thursday and some of these could become strong thanks to the local increase in mid-level winds that would support some multi-cell storm organization. 

Behind this feature, it appears some drier air could spill down into parts of the TN Valley for the 4th of July weekend thanks to what might be Arthur skirting up the eastern Atlantic seaboard. Confidence isn't all that high in this scenario, but it does certainly appear possible beginning Friday we could see some lower humidity and highs drop back into the mid 80s...stay tuned!

Isaac Williams

WAAY-TV Meteorologist

iwilliams@waaytv.com

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