May 24, 2011: Thunderstorm risks - tornadoes Wednesday possible

Tuesday, May 24, 2011
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I will be sending out an email update shortly - you can now subscribe to the free emails by going to this link...
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http://www.weatherobservatory.com/newsletter.htm
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I will be running threads on the Beau Dodson Facebook page with updates as the severe weather unfolds.  I try to break these threads down into 3-4 hour threads.  That way it is easier to keep up with questions and reports.

Links you may need for this event or that may be useful for you

Radars
Watches and warnings
Second backup for watches and warnings
Beau Dodson Facebook  
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Round one of severe weather on Monday brought some damaging winds to a few of our counties.  Winds of 60-80 mph damaged portions of Cape Girardeau, Scott, Gallatin, McCracken, and Calloway Counties - Christian County, KY also had damage with a possible tornado.  The National Weather Service will be assessing the damage today and this afternoon to determine if any tornadoes touched down.

Now we move on to the next severe weather chances.  There will be a few thunderstorms develop this afternoon over our counties - in the heat of the day.  A strong storm can't be ruled out.

A more widespread area of thunderstorms could approach our western counties late tonight - most likely in the form of a squall line or broken line of thunderstorms.  A few of these storms could produce severe weather - this is most true in Arkansas into Missouri and then southwest Illinois.

Areas well to our west may see a tornado outbreak this afternoon and tonight.

Then attention turns to the big event on Wednesday.  We have been talking about this event for over a week now.  And now the picture is becoming more clear.

Strong instability will combine with sufficient lift in the atmosphere and wind shear to cause thunderstorms - some supercells - to form over our region on Wednesday.  A few of these storms could even produce tornadoes.

The Storm Prediction Center is quite concerned about the potential for widespread severe weather.

Best advice - listen to NOAA Weather Radio for updates - and local media.  This is potentially a dangerous weather situation developing.  As we have seen over the last two months - tornadoes can strike with little notice and cause a lot of damage.  

Stay tuned over the coming 48 hours for updates.

I will be running threads on the Beau Dodson Facebook page with updates as the severe weather unfolds.  I try to break these threads down into 3-4 hour threads.  That way it is easier to keep up with questions and reports.

Links you may need for this event

Radars
Watches and warnings
Second backup for watches and warnings
Beau Dodson Facebook
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Watches and warnings will likely be necessary for some of our counties from time to time.
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This page is best viewed with Mozilla Firefox.  There could be issues with spacing on Internet Explorer




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This forecast covers far southern Illinois, southeast Missouri, and western Kentucky - for your local town - click here
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Tuesday: Partly sunny and warm - humid.  Scattered showers and thunderstorms will be possible.  Above normal temperatures.
Highs:  in the lower to middle 80s | Wind: southerly winds at 15-20 mph - gusty at times.  Normal highs are around 74-75 degrees.

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Tuesday night:  Partly cloudy with scattered storms possible - a few storms may be severe.  Above normal temperatures.
Lows: around 68 degrees  |  Wind: southerly winds at 10-20 mph. Normal lows are around 52-54 degrees.
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Wednesday:  A chance for thunderstorms - some severe.   Above normal temperatures.
Highs:  around 84 degrees  | Wind: southerly winds at 10-25 mph - gusty at times.  Normal highs are around 74-75 degrees.
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Wednesday night: Thunderstorms - some severe.  Above normal temperatures.
Lows: around 67 degrees  |  Wind: southerly winds at 10-20 mph and gusty. Normal lows are around 52-54 degrees..
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Thursday:  Showers and thunderstorms.  Above normal temperatures.
Highs:  around 77 degrees  | Wind: southerly winds at 10-15 with gusts to 20 mph.  Normal highs are around 74-75 degrees.
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Join me on Facebook for more frequent updates on the weather in our local area
Click Here
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Did you know that the McCracken County Office of Emergency Management also now has a Facebook?  You can view it here
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Forecast for your local town/city - Click Here
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River Stages - Click Here

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The McCracken County Office of Emergency Management reminds you that owning a NOAA Weather Radio is the best way to receive notifications of severe weather watches and warnings.
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Also our new forecast page is finished!  Just click the link below to see all of our Weather Observatory graphics - from the severe weather outlook to lake and river stages - extended outlooks - monthly outlooks - satellite - and more!.


Weather Observatory Graphics and Forecast Page
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Remember you can view all of the temperature maps below - and more - by clicking here
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Below image - Low temperatures for Tuesday morning - n/a
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Below image - High temperatures for Tuesday afternoon
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Below image - High temperatures for Wednesday afternoon
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The forecast for severe or extreme weather risk for today, tonight, and tomorrow... 


Tuesday:  A few storms may produce heavy rain, lightning, gusty winds, and hail. 
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Tuesday night:  A few strong storms are possible - some severe storms
 

Wednesday: Severe thunderstorms are likely - a few storms may produce winds greater than 70 mph and tornadoes. 
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Wednesday night: Severe thunderstorms likely - a few storms may produce winds greater than 70 mph and tornadoes.
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Wednesday: A few thunderstorms will once again be possible.  A few of these storms may be severe with high winds, hail, lightning,  and heavy rain.  


Let's take a look at the official severe weather outlooks for today (Tuesday) and for Wednesday.  You can see the Storm Prediction Center is quite concerned.  We have a rare high risk for portions of the central United States - today.  Tomorrow we have a moderate risk for our region.  Probabilities are quite high for a damaging storms with this series of storms.
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Here is the outlook from the SPC for today - Tuesday.  The pink area is the rare high risk designation.  Tornadoes are likely today in those areas of pink.  Tornadoes can occur in the red and orange areas, as well.  I think our greatest threat for tornadic storms, in our region, will be with the Wednesday event.
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And here is the outlook below for Wednesday - the deep red means a moderate risk for severe thunderstorms and tornadoes.


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You can view the updated rainfall forecast maps - updated twice a day by going to the Weather Observatory Forecast Site - Click Here

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Rainfall totals for the next 72 hours - any storms that form could produce locally heavy rain
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We have a number of new radars available on our Weather Observatory web-site!
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We now offer St Louis, Mt Vernon, Evansville, Poplar Bluff, Cape Girardeau, Marion, Paducah, Hopkinsville, and Dyersburg Interactive City Radars.  We also have the two regional radars and now offer you three GR Earth radars.

http://www.weatherobservatory.com/weather-radar.htm---
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You can now view the 6-10 and 8-14 day forecasts!  Maps are available by clicking here. 


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1. Focus right now is completely on the severe weather threats over the next few days. 

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You can find me on Twitter under Beau Dodson

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Have you joined the email list?  I send out emails 2-4 days in advance of severe weather.  Basically this is a "heads up" email.  If you would like to subscribe then click here.
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You can find me on Facebook under Beau Dodson Weather - hit LIKE at the top of the page and you can follow along - also please pass the link along to your friends.
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Meteorologist Beau Dodson
McCracken County Office of Emergency Management


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For the latest watches and warnings please visit your local National Weather Service Office
http://www.weather.gov/organization.php


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To view all watches and warnings in Illinois- Click Here


To view all watches and warnings in Kentucky - Click Here
To view all watches and warnings in Missouri - Click Here
To view all watches and warnings in Tennessee - Click Here
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Other States- Click Here
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