Beau Dodson's WeatherTalk Blog

July 18, 2023: Thunderstorms and significant flash flooding potential.

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Seven-day forecast for southeast Missouri, southern Illinois, western Kentucky, and western Tennessee.

This is a BLEND for the region.  Scroll down to see the region by region forecast.

THE FORECAST IS GOING TO VARY FROM LOCATION TO LOCATION.  Scroll down to see the region by region forecast.

Today’s Local Almanacs (for a few select cities).  Your location will be comparable.

Note, the low is this morning’s low and not tomorrows.

Today’s almanac numbers from a few select local cities.

The forecast temperature shows you today’s expected high and this morning’s low.

The graphic shows you the record high and record low for today. It shows you what  year that occurred, as well.

It then shows you what today’s average temperature is.

Then, it shows you the departures (how may degrees above or below average temperatures will be ).

It shows you the average precipitation for today.  Average comes from thirty years of rain totals.

It also shows you the record rainfall for the date and what year that occurred.

The sunrise and sunset are also shown.

 

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48-hour forecast



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Tuesday to Tuesday

1. Is lightning in the forecast? Yes. Lightning is possible today through Thursday.  I will monitor beyond Thursday.

2.  Are severe thunderstorms in the forecast?  Monitor.   Severe thunderstorms are possible today, tonight, and Thursday

3. Is flash flooding in the forecast? YES.  Flash flooding is likely today/tonight/tomorrow morning.  Some locations could exceed six inches of rain.  Avoid flooded roadways.

4. Will the heat index exceed 100 degrees?  Yes.  Wednesday.

5. Will the wind chill dip below 10 degrees?  No.

6.  Is measurable snow and/or sleet in the forecast?  No.

7.  Is freezing rain/ice in the forecast?  No.
Freezing rain is rain that falls and instantly freezes on objects such as trees and power lines

 

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Tuesday, July 18, 2023
Confidence in the forecast?  High Confidence  
Tuesday  Forecast:  A mix of sun and clouds. A chance of showers and thunderstorms.  A couple of rounds of storms will be possible.  One during the morning and then additional chances during the afternoon and evening.
What is the chance of precipitation?
Far northern southeast Missouri ~ 60%
Southeast Missouri ~ 70%
The Missouri Bootheel ~ 60%
I-64 Corridor of southern Illinois ~ 60%
Southern Illinois ~ 70%
Extreme southern Illinois (southern seven counties) ~ 60%
Far western Kentucky ~ 70%
The Pennyrile area of western KY ~ 40%
Northwest Kentucky (near Indiana border) ~ 60%
Northwest Tennessee ~ 60%

Coverage of precipitation: Numerous
Timing of the precipitation:  Any given point of time
Far northern southeast Missouri ~ 86° to 88°
Southeast Missouri ~ 86° to 88°
The Missouri Bootheel ~ 86° to 88°
I-64 Corridor of southern Illinois ~ 86° to 88°
Southern Illinois ~ 86° to 88°
Extreme southern Illinois (southern seven counties) ~ 86° to 88°
Far western Kentucky ~ 86° to 88°
The Pennyrile area of western KY ~ 86° to 88°
Northwest Kentucky (near Indiana border) ~ 86° to 88°
Northwest Tennessee ~ 86° to 88°

Winds will be from this direction: South southwest 8 to 16 mph
Wind chill or heat index (feels like) temperature forecast: 90° to 95°
What impacts are anticipated from the weather? Wet roadways.  Lightning.  Gusty winds near storms.  Locally heavy rain.   Some storms could be severe with damaging wind and hail.  Some storms could produce flash flooding. Monitor updates.
Should I cancel my outdoor plans? No, but monitor updates and the Beau Dodson Weather Radars and app
UV Index: 9. Very high.
Sunrise: 5:49 AM
Sunset:  8:14 PM
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Tuesday night ForecastA flash flood alert has been issued for the area. Partly cloudy. A chance of showers and thunderstorms.  One round of storms during the evening.  Additional storms are possible late at night.   Monitor updates.  Some locations could receive more than six inches of rain.  I am monitoring Illinois, Kentucky, and Tennessee for the highest risk of flash flooding.  Some significant.
What is the chance of precipitation?
Far northern southeast Missouri ~ 60%
Southeast Missouri ~ 60%
The Missouri Bootheel ~ 40%
I-64 Corridor of southern Illinois ~ 70%
Southern Illinois ~ 80%
Extreme southern Illinois (southern seven counties) ~ 90%
Far western Kentucky ~ 90%
The Pennyrile area of western KY ~ 70%
Northwest Kentucky (near Indiana border) ~ 60%
Northwest Tennessee ~ 70%

Coverage of precipitation: Numerous
Timing of the precipitation: Any given point of time.
Temperature range:
Far northern southeast Missouri ~ 70° to 75°
Southeast Missouri ~ 70° to 75°
The Missouri Bootheel ~ 70° to 75°
I-64 Corridor of southern Illinois ~ 70° to 75°
Southern Illinois ~ 70° to 75°
Extreme southern Illinois (southern seven counties) ~ 70° to 75°
Far western Kentucky ~ 70° to 75°
The Pennyrile area of western KY ~ 70° to 75°
Northwest Kentucky (near Indiana border) ~ 70° to 75°
Northwest Tennessee ~ 70° to 75°

Winds will be from this direction: South southeast 8 to 16 mph.
Wind chill or heat index (feels like) temperature forecast: 70° to 75°
What impacts are anticipated from the weather?  Flash flooding. Some significant. Wet roadways.  Lightning.  Gusty wind near storms.   Some storms could be severe with damaging wind and hail.
Should I cancel my outdoor plans? No, but monitor updates and the Beau Dodson Weather Radars and app
Moonrise: 6:19 AM
Moonset: 9:19 PM
The phase of the moon:  Waxing Crescent

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Wednesday, July 19, 2023
Confidence in the forecast?  High Confidence  
Wednesday  Forecast:  After sunrise. Morning clouds. A chance of showers and thunderstorms.  Morning storms could be heavy.  Flash flooding possible. Hot and muggy.
What is the chance of precipitation?
Far northern southeast Missouri ~ 20%
Southeast Missouri ~ 20%
The Missouri Bootheel ~ 30%
I-64 Corridor of southern Illinois ~ 20%
Southern Illinois ~ 30%
Extreme southern Illinois (southern seven counties) ~ 40%
Far western Kentucky ~ 60%
The Pennyrile area of western KY ~ 40%
Northwest Kentucky (near Indiana border) ~ 40%
Northwest Tennessee ~ 60%

Coverage of precipitation: Numerous early.  Becoming scattered.
Timing of the precipitation:  Any given point of time.
Far northern southeast Missouri ~ 92° to 95°
Southeast Missouri ~ 94° to 98°
The Missouri Bootheel ~ 94° to 98°
I-64 Corridor of southern Illinois ~ 88° to 92°
Southern Illinois ~ 90° to 92°
Extreme southern Illinois (southern seven counties) ~ 90° to 92°
Far western Kentucky ~ 92° to 95°
The Pennyrile area of western KY ~ 90° to 92°
Northwest Kentucky (near Indiana border) ~ 88° to 92°
Northwest Tennessee ~ 92° to 95°  

Winds will be from this direction: Southwest 15 to 30 mph
Wind chill or heat index (feels like) temperature forecast: 98° to 108°
What impacts are anticipated from the weather? Wet roadways.  Lightning. Flash flooding in some areas.
Should I cancel my outdoor plans? No, but monitor the Beau Dodson Weather Radars
UV Index: 9. Very high.
Sunrise: 5:49 AM
Sunset:  8:14 PM
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Wednesday night Forecast:  Partly cloudy.  A chance of showers and thunderstorms.
What is the chance of precipitation?
Far northern southeast Missouri ~ 40%
Southeast Missouri ~ 40%
The Missouri Bootheel ~ 30%
I-64 Corridor of southern Illinois ~ 40%
Southern Illinois ~ 40%
Extreme southern Illinois (southern seven counties) ~  40%
Far western Kentucky ~ 30%
The Pennyrile area of western KY ~ 30%
Northwest Kentucky (near Indiana border) ~ 40%
Northwest Tennessee ~ 20%

Coverage of precipitation: Widely scattered
Timing of the precipitation: Any given point of time.
Temperature range:
Far northern southeast Missouri ~ 70° to 74°
Southeast Missouri ~ 73° to 76°
The Missouri Bootheel ~ 74° to 78°
I-64 Corridor of southern Illinois ~ 70° to 72°
Southern Illinois ~ 72° to 74°
Extreme southern Illinois (southern seven counties) ~ 72° to 74°
Far western Kentucky ~ 73° to 76°
The Pennyrile area of western KY ~ 73° to 76°
Northwest Kentucky (near Indiana border) ~ 73° to 76°
Northwest Tennessee ~ 74° to 78°

Winds will be from this direction: South southwest 10 to 20 mph
Wind chill or heat index (feels like) temperature forecast: 70° to 78°
What impacts are anticipated from the weather? Wet roadways.  Lightning.
Should I cancel my outdoor plans? No, but monitor the Beau Dodson Weather Radars
Moonrise: 7:20 AM
Moonset: 9:49 PM
The phase of the moon:  Waxing Crescent

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Thursday, July 20, 2023
Confidence in the forecast?  High Confidence  
Thursday  Forecast:  Mostly sunny. A chance of showers and thunderstorms.
What is the chance of precipitation?
Far northern southeast Missouri ~ 30%
Southeast Missouri ~ 30%
The Missouri Bootheel ~ 30%
I-64 Corridor of southern Illinois ~ 30%
Southern Illinois ~ 30%
Extreme southern Illinois (southern seven counties) ~ 30%
Far western Kentucky ~  30%
The Pennyrile area of western KY ~ 30%
Northwest Kentucky (near Indiana border) ~ 30%
Northwest Tennessee ~ 30%

Coverage of precipitation:  Isolated
Timing of the precipitation:  Any given point of time.
Far northern southeast Missouri ~ 88° to 92°
Southeast Missouri ~ 88° to 92°
The Missouri Bootheel ~ 88° to 92°
I-64 Corridor of southern Illinois ~ 88° to 92°
Southern Illinois ~ 88° to 92°
Extreme southern Illinois (southern seven counties) ~ 88° to 92°
Far western Kentucky ~ 88° to 92°
The Pennyrile area of western KY ~  88° to 92°
Northwest Kentucky (near Indiana border) ~ 88° to 92°
Northwest Tennessee ~ 88° to 92°

Winds will be from this direction: West southwest 7 to 14 mph
Wind chill or heat index (feels like) temperature forecast: 88° to 92°
What impacts are anticipated from the weather? Wet roadways.  Lightning.  A few storms could be intense.
Should I cancel my outdoor plans? No, but monitor the Beau Dodson Weather Radars
UV Index: 7. High.
Sunrise: 5:50 AM
Sunset:  8:13 PM
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Thursday night Forecast:  Mostly clear.  A slight chance of showers and thunderstorms.
What is the chance of precipitation?
Far northern southeast Missouri ~ 10%
Southeast Missouri ~ 20%
The Missouri Bootheel ~ 30%
I-64 Corridor of southern Illinois ~ 10%
Southern Illinois ~ 20%
Extreme southern Illinois (southern seven counties) ~ 20%
Far western Kentucky ~  30%
The Pennyrile area of western KY ~ 30%
Northwest Kentucky (near Indiana border) ~ 30%
Northwest Tennessee ~ 20%

Coverage of precipitation: Isolated
Timing of the precipitation: Any given point of time.
Temperature range:
Far northern southeast Missouri ~ 63° to 66°
Southeast Missouri ~ 62° to 65°
The Missouri Bootheel ~ 66° to 70°
I-64 Corridor of southern Illinois ~ 63° to 66°
Southern Illinois ~ 62° to 65°
Extreme southern Illinois (southern seven counties) ~ 64° to 66°
Far western Kentucky ~ 64° to 68°
The Pennyrile area of western KY ~ 64° to 68°
Northwest Kentucky (near Indiana border) ~ 62° to 64°
Northwest Tennessee ~ 66° to 70°

Winds will be from this direction: West northwest 7 to 14 mph
Wind chill or heat index (feels like) temperature forecast: 64° to 70°
What impacts are anticipated from the weather? Wet roadways.  Lightning.
Should I cancel my outdoor plans? No, but monitor the Beau Dodson Weather Radars
Moonrise: 8:20 AM
Moonset: 10:16 PM
The phase of the moon:  Waxing Crescent

 

 

 

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Weather Highlights

    1.   Flash flood alert.
    2.   A few storms today and tonight could be severe.
    3.  Hot and windy Wednesday.
    4.  A few storms possible Thursday, as well.  Possibly a few intense storms.

Weather advice:

Avoid flooded roadways.  Every year people die trying to cross flooded roadways.

Make sure you have three to five ways of receiving your severe weather information.

Don’t forget the sunscreen on this summer warm days!  Review summer heat safety rules.

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Forecast Discussion

Today’s Average Regional Forecast Numbers

Temperatures will vary based on cloud cover and precipitation.  Keep that in mind.

Thunderstorm chances.

Flash Flood Alert

The primary message today is two-fold.

We will have scattered thunderstorms forming throughout the day.  Some of these thunderstorms could produce heavy rain, large hail, and damaging wind.

Yesterday, some of the thunderstorms produced golf ball to tennis ball size hail, 3 to 5 inches of rain, and 75 mph wind gusts.

The atmosphere will be unstable today.  Monitor your Beau Dodson Weather app.

My bigger concern will be the threat of significant rainfall tonight over portions of my forecast area.

The heaviest rain will likely fall across portions of southern Illinois, western Kentucky, and northwest Tennessee.  Rain totals of three to six+ inches will be possible.

Of course, not everyone will experience these large rain totals.  A few spots, however, likely will.

This will occur as thunderstorms develop late tonight and repeatedly train over the same areas.  Most likely, the heaviest rain will occur after midnight into the wee morning hours.

This is a particularly dangerous flash flood situation.  Avoid flooded roadways.  Every year people die trying to cross flooded roadways.

The rain will taper off after sunrise tomorrow morning.

A few storms will be possible Wednesday and Wednesday night.  Another chance Thursday.

For now, let’s focus on the next 24 hours.

The WPC has placed us in a risk of excessive rainfall, as well.  That means storms could produce pockets of flash flooding.

This is a moderate risk and could be upgraded to a rare high risk.  The bottom line is that flash flooding is likely over the next 24 hours in some counties.  Not everyone will experience flash flooding.  A few spots, however, could have very large rain totals.

Today

Tomorrow, after the morning flash flood threat, the WPC has us in a low end risk the rest of the day into Wednesday night.

 

 

 



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This outlook covers southeast Missouri, southern Illinois, western Kentucky, and far northwest Tennessee.

Today through April 18th:  A couple of the Saturday afternoon and night thunderstorms could produce damaging wind and hail.  The tornado risk is low, but not zero.  Mainly over Missouri for the tornado risk.  The line will weaken with time as it moves farther east.

 

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Today’s Storm Prediction Center’s Severe Weather Outlook

Light green is where thunderstorms may occur but should be below severe levels.

Dark green is a level one risk. Yellow is a level two risk. Orange is a level three (enhanced) risk. Red is a level four (moderate) risk. Pink is a level five (high) risk.

One is the lowest risk. Five is the highest risk.

A severe storm is one that produces 58 mph wind or higher, quarter size hail, and/or a tornado.

Explanation of tables.  Click here.

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Tornado Probability Outlook

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Large Hail Probability Outlook

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High wind Probability Outlook

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Tomorrow’s severe weather outlook.

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Day Three Severe Weather Outlook

 

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The images below are from NOAA’s Weather Prediction Center.

24-hour precipitation outlook..
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48-hour precipitation outlook.
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Again, as a reminder, these are models. They are never 100% accurate. Take the general idea from them.

What should I take from these?

  1. The general idea and not specifics. Models usually do well with the generalities.
  2. The time-stamp is located in the upper left corner.

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What am I looking at?

You are looking at computer model data.  Meteorologists use many different models to forecast the weather.

Occasionally, these maps are in Zulu time.  12z=7 AM.  18z=1 PM.  00z=7 PM. 06z=1 AM

Green represents light rain.  Dark green represents moderate rain.  Yellow and orange represent heavier rain.

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This  animation is the Hrrr Model.

Occasionally, these maps are in Zulu time.  12z=7 AM.  18z=1 PM.  00z=7 PM. 06z=1 AM

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This  animation is the NAM 3K Model.

Occasionally, these maps are in Zulu time.  12z=7 AM.  18z=1 PM.  00z=7 PM. 06z=1 AM

 

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.Average high temperatures for this time of the year are around 90 degrees.

Average low temperatures for this time of the year are around 70 degrees.

Average precipitation during this time period ranges from 0.90″ to 1.20″

Six to Ten Day Outlook.

Blue is below average.  Red is above average.  The no color zone represents equal chances.

Average highs for this time of the year are in the lower 60s.  Average lows for this time of the year are in the lower 40s.

Green is above average precipitation.  Yellow and brown favors below average precipitation.  Average precipitation for this time of the year is around one inch per week.

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Average high temperatures for this time of the year are around 90 degrees.

Average low temperatures for this time of the year are around 70 degrees.

Average precipitation during this time period ranges from 0.90″ to 1.20″
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Eight to Fourteen Day Outlook.

Blue is below average.  Red is above average.  The no color zone represents equal chances.

Green is above average precipitation.  Yellow and brown favors below average precipitation.  Average precipitation for this time of the year is around one inch per week.

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Regional Radar
https://imagery.weathertalk.com/prx/RadarLoop.mp4

** NEW ** Zoom radar with chaser tracking abilities!
ZoomRadar

Lightning Data (zoom in and out of your local area)
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Not working? Email me at beaudodson@usawx.com

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National map of weather watches and warnings. Click here.

Storm Prediction Center. Click here.

Weather Prediction Center. Click here.

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Live lightning data: Click here.

Real time lightning data (another one) https://map.blitzortung.org/#5.02/37.95/-86.99

Our new Zoom radar with storm chases

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Interactive GOES R satellite. Track clouds. Click here.

GOES 16 slider tool.   Click here.

College of DuPage satellites. Click here

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Here are the latest local river stage forecast numbers Click Here.

Here are the latest lake stage forecast numbers for Kentucky Lake and Lake Barkley Click Here.

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