Beau Dodson's WeatherTalk Blog

February 25, 2021. Beau’s subscriber’s weather blog update. Not a subscriber? Go to www.weathertalk.com/welcome Once subscribed, download the WeatherTalk app in the app store

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Do you have any suggestions or comments?  Email me at beaudodson@usawx.com

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

This is a BLEND for the region.  See the detailed region by region forecast further down in this post.

Rain chances will vary greatly from north to south over the coming days.

See the daily details further down in the blog.  See the future-cast radars, as well.

I posted some graphics in the main portion of the weather discussion blog.  They will show you a graphical view of the probability chances of rain.

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Wednesday to Wednesday

1.  Are accumulating snow or ice in the forecast? No.

2. Is lightning in the forecast?   Monitor.  I am watching Saturday night into Sunday.  I can’t rule out lightning.

3.  Are severe thunderstorms in the forecast?  No.

* The NWS officially defines a severe thunderstorm as a storm with 58 mph wind or greater,  1″ hail or larger,  and/or tornadoes

4.  Is flash flooding in the forecast?  Monitor.  Locally heavy rain in the Tennessee Valley over the coming seven days.  This will cause some of our rivers to rise, as well.  Remember, that water flows northward (some of it).  Monitor updates locally, as well.  The placement of a frontal boundary will determine rain totals.

6.  Will the wind chill dip below 10 degrees above zero?  No.

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February 25, 2021
How confident am I that this days forecast will verify? High Confidence
Thursday Forecast: Partly cloudy.  Cooler.  A few clouds.
What is the chance of precipitation? SE MO ~ 0%    IL ~ 0%    KY ~ 0%    TN ~ 0%
Temperature range: MO Bootheel 52° to 54°    SE MO 48° to 52°    South IL  48° to 52°   Northwest KY (near Indiana border)  50° to 52°    West KY 50° to 52°    NW TN 50° to 54°
Wind direction and speed: North northeast at 7 to 14 mph
Wind chill or heat index (feels like) temperature forecast: 48° to 52°
Coverage of precipitation: None
What impacts are anticipated from the weather?  None
Should I cancel my outdoor plans? No
UV Index: 2. Low
Sunrise: 6:31 AM
Sunset: 5:46 PM
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Thursday night Forecast:  Increasing clouds.  A few showers will be possible over our southern counties.  Mainly the Bootheel eastward along the KY/TN State line.  Perhaps a wet snowflake mixed in with no impact.
What is the chance of precipitation? SE MO ~ 20%    IL ~ 10%    KY ~ 20%    TN ~ 40%
Temperature range: MO Bootheel 32° to 35°     SE  MO  30° to 35°     South IL  30° to 35°     Northwest KY (near Indiana border) 30° to 34°    West KY 32° to 35°     NW TN 32° to 35°
Wind direction and speed: East northeast at 5 to 10 mph
Wind chill or heat index (feels like) temperature forecast: 30° to 35°
Coverage of precipitation:  None north.  Scattered far south.
What impacts are anticipated from the weather? Wet roadways far south.  See graphics and future-cast radars.
Should I cancel my outdoor plans? No
Moonrise: 4:01 PM
Moonset:  5:47 AM
The phase of the moon: Waxing Gibbous

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February 26, 2021
How confident am I that this days forecast will verify? Medium Confidence
Friday Forecast: Intervals of clouds.  A chance of mainly rain showers across the Missouri Bootheel and then along the Kentucky/Tennessee State line.
What is the chance of precipitation? SE MO ~ 10% north and 30% Bootheel    IL ~ 20%    KY ~ 30%    TN ~ 50%
Temperature range: MO Bootheel 48° to 50°    SE MO 46° to 50°    South IL  46° to 50°   Northwest KY (near Indiana border)  46° to 48°    West KY 48° to 50°    NW TN 48° to 52°
Wind direction and speed: East southeast at 6 to 12 mph with higher gusts
Wind chill or heat index (feels like) temperature forecast: 45° to 50°
Coverage of precipitation:  Scattered south.
What impacts are anticipated from the weather?  Wet roadways.
Should I cancel my outdoor plans? No, but check radars
UV Index: 3. Medium.
Sunrise: 6:30 AM
Sunset: 5:47 PM
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Friday night Forecast: Cloudy.  Scattered rain showers.
What is the chance of precipitation? SE MO ~ 30%    IL ~ 30%    KY ~ 40% along the OH River and 50% further south    TN ~ 50%
Temperature range: MO Bootheel 42° to 44°     SE  MO  35° to 40°     South IL  34° to 38°     Northwest KY (near Indiana border) 35° to 40°    West KY 36° to 40°     NW TN 42° to 45°
Wind direction and speed: South at 6 to 12 mph
Wind chill or heat index (feels like) temperature forecast: 32° to 42°
Coverage of precipitation: Scattered (higher chances further south vs north)
What impacts are anticipated from the weather?  Wet roadways.
Should I cancel my outdoor plans? Check radars.
Moonrise: 5:11 PM
Moonset:  6:26 AM
The phase of the moon: Full

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February 27, 2021
How confident am I that this days forecast will verify? Medium Confidence
Saturday Forecast:  Intervals of clouds and sun.  A chance of a few showers (mainly over the Bootheel into western Kentucky and northwest Tennessee)
What is the chance of precipitation? SE MO ~ 20%    IL ~ 10%    KY ~ 20%    TN ~ 30%
Temperature range: MO Bootheel 58° to 62°    SE MO 56° to 60°    South IL  56° to 60°   Northwest KY (near Indiana border)  54° to 60°    West KY 56° to 60°    NW TN 58° to 62°
Wind direction and speed: South southwest at 7 to 14 mph
Wind chill or heat index (feels like) temperature forecast: 54° to 60°
Coverage of precipitation: Isolated far south
What impacts are anticipated from the weather?  None for most.  A few wet roadways over our southern counties.
Should I cancel my outdoor plans? No, but monitor updates
UV Index: 4. Medium.
Sunrise: 6:28 AM
Sunset: 5:48 PM
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Saturday night Forecast:   Cloudy.   A chance of showers and perhaps a thunderstorm.  There remain questions about how far north to bring the rain.
What is the chance of precipitation? SE MO ~ 50% north and 80% Bootheel    IL ~ 60%    KY ~ 60% to 70%    TN ~ 90%
Temperature range: MO Bootheel 46° to 52°     SE  MO  40° to 44°     South IL  40° to 44°     Northwest KY (near Indiana border) 40° to 45°    West KY 46° to 52°     NW TN 50° to 52°
Wind direction and speed: Southeast at 5 to 10 mph with gusts to 15 mph
Wind chill or heat index (feels like) temperature forecast: 38° to 54°
Coverage of precipitation: Numerous
What impacts are anticipated from the weather? Wet roadways.  Lightning.
Should I cancel my outdoor plans? Have a plan B and check radars
Moonrise: 6:21 PM
Moonset:  7:01 AM
The phase of the moon: Full

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February 28, 2021
How confident am I that this days forecast will verify? Medium Confidence
Sunday Forecast:   Mostly cloudy. Scattered showers and thunderstorms.  More south vs north.
What is the chance of precipitation? SE MO ~ 30% north and 60% far south    IL ~ 30% north and 60% far south    KY ~ 60%    TN ~ 70%
Temperature range: MO Bootheel 58° to 62°    SE MO 55° to 60°    South IL  55° to 60°   Northwest KY (near Indiana border)  55° to 58°    West KY 56° to 62°    NW TN 56° to 62°
Wind direction and speed: North at 6 to 12 mph
Wind chill or heat index (feels like) temperature forecast: 52° to 62°
Coverage of precipitation: Scattered to numerous.
What impacts are anticipated from the weather? Wet roadways. Lightning.
Should I cancel my outdoor plans? Have a plan B far south and monitor radars far north.
UV Index: 3. Medium.
Sunrise: 6:27 AM
Sunset: 5:49 PM
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Sunday night Forecast:   Cloudy.   A chance of showers.
What is the chance of precipitation? SE MO ~ 30% far north and 60% far south    IL ~ 30% far north and 50% far south    KY ~ 60%    TN ~ 60%
Temperature range: MO Bootheel 40° to 45°     SE  MO  32° to 40°     South IL  32° to 38°     Northwest KY (near Indiana border) 36° to 40°    West KY 36° to 40°     NW TN 40° to 44°
Wind direction and speed: North at 7 to 14 mph.  Gusty.
Wind chill or heat index (feels like) temperature forecast: 30° to 40°
Coverage of precipitation: Widely scattered far north and numerous far south (see graphics further down in the blog)
What impacts are anticipated from the weather? Wet roadways. Lightning.
Should I cancel my outdoor plans? No, but check radars and monitor updates.
Moonrise: 7:33 PM
Moonset:  7:34 AM
The phase of the moon: Waning Gibbous

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March 1, 2021
How confident am I that this days forecast will verify? LOW Confidence
Monday Forecast:   Mostly cloudy.  A chance of widely scattered showers.
What is the chance of precipitation? SE MO ~ 20%    IL ~ 20%    KY ~ 30%    TN ~ 30%
Temperature range: MO Bootheel 52° to 55°    SE MO 50° to 55°    South IL  50° to 55°   Northwest KY (near Indiana border)  52° to 55°    West KY 52° to 55°    NW TN 52° to 55°
Wind direction and speed: North at 7 to 14 mph
Wind chill or heat index (feels like) temperature forecast: 48° to 54°
Coverage of precipitation: Widely scattered
What impacts are anticipated from the weather? Wet roadways.
Should I cancel my outdoor plans? No, but check radars and monitor updates.
UV Index: 3. Medium.
Sunrise: 6:26 AM
Sunset: 5:50 PM
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Monday night Forecast:   Cloudy.   A chance of showers.
What is the chance of precipitation? SE MO ~ 30%    IL ~ 30%    KY ~ 30%    TN ~ 30%
Temperature range: MO Bootheel 34° to 38°     SE  MO  32° to 38°     South IL  32° to 36°     Northwest KY (near Indiana border) 34° to 36°    West KY 34° to 36°     NW TN 35° to 40°
Wind direction and speed: Northeast and east at 6 to 12 mph.
Wind chill or heat index (feels like) temperature forecast: 30° to 40°
Coverage of precipitation: Widely scattered
What impacts are anticipated from the weather? Widely scattered wet roadways.
Should I cancel my outdoor plans? No, but check radars and monitor updates.
Moonrise: 8:43 PM
Moonset:  8:04 AM
The phase of the moon: Waning Gibbous

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March 2, 2021
How confident am I that this days forecast will verify? Medium Confidence
Tuesday Forecast:   Partly sunny. A slight chance of showers.
What is the chance of precipitation? SE MO ~ 20%    IL ~ 20%    KY ~ 20%    TN ~ 20%
Temperature range: MO Bootheel 54° to 58°    SE MO 53° to 56°    South IL  53° to 56°   Northwest KY (near Indiana border)  52° to 55°    West KY 53° to 56°    NW TN 55° to 60°
Wind direction and speed:  South 5 to 10 mph
Wind chill or heat index (feels like) temperature forecast: 50° to 60°
Coverage of precipitation: Isolated
What impacts are anticipated from the weather? Isolated wet roadways
Should I cancel my outdoor plans? No
UV Index: 4. Medium.
Sunrise: 6:24 AM
Sunset: 5:51 PM
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Tuesday night Forecast:  Partly cloudy.
What is the chance of precipitation? SE MO ~ 0%    IL ~ 0%    KY ~ 0%    TN ~ 0%
Temperature range: MO Bootheel 36° to 40°     SE  MO  33° to 36°     South IL  33° to 36°     Northwest KY (near Indiana border) 34° to 36°    West KY 34° to 36°     NW TN 35° to 40°
Wind direction and speed: South 5 to 10 mph
Wind chill or heat index (feels like) temperature forecast: 30° to 35°
Coverage of precipitation:  None
What impacts are anticipated from the weather? None
Should I cancel my outdoor plans? No
Moonrise: 9:55 PM
Moonset:  8:34 AM
The phase of the moon: Waning Gibbous

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Double click on the images to enlarge them.

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Graphic-cast

Click here if you would like to return to the top of the page.

Illinois

During active weather check my handwritten forecast towards the top of the page.

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Kentucky

During active weather check my handwritten forecast towards the top of the page.


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.Tennessee

During active weather check my handwritten forecast towards the top of the page.


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Today through March 3rd.  Severe weather is not anticipated.

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Today’s outlook (below).

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.

The tan states are simply a region that SPC outlined on this particular map.  Just ignore that.

The black outline is our local area.

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Tomorrow’s severe weather outlook.

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The images below are from the WPC.  Their totals are a bit lower than our current forecast.  I wanted to show you the comparison.

24-hour precipitation outlook.
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48-hour precipitation outlook.
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72-hour precipitation outlook.
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Weather advice:

Monitor river levels over the coming weeks.

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Weather Discussion

    1.   Monitoring a series of rain events.  Rain could be locally heavy in our far southern counties
    2.   No snowstorms in the forecast.
    3.   No severe weather outbreaks in the forecast.

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Forecast Discussion

An active weather pattern is developing.  This will last into Monday.

The main concern will be locally heavy rain totals.  This would primarily occur across the Missouri Bootheel and then east along the Kentucky/Tennessee border counties.  From there southward.

There are still some concerns about how far north or south to place the boundary.  The boundary placement is key to rain totals.  I have been struggling to keep tabs on exactly where to play the boundary.

There may still be adjustments.

The easier way for me to show you the rain probabilities will be through a series of graphics.  These graphics cover 12-hour time periods.

Take the general idea from these graphics.  It won’t be perfect.

There may be some lightning Saturday night and Sunday.  No severe weather, thankfully.

See the future-cast radars further down in this blog update.  That will give you an idea on each system.

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Today and Tonight

Today will be dry.  Cooler than the last couple of days.  No rain today.

A weak system will brush the Bootheel, western Kentucky, and northwest Tennessee tonight and tomorrow.

A few rain showers will be the end result.  Perhaps a rain/snow mix with no accumulation.

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Friday night into the weekend.

On and off rain chances into Monday.

There will be time-periods when rain chances will peak.  That will be Saturday night into Sunday.

That means that rain chances will look like this.

Let me show you a series of graphics that show you the probability of rain during each 12-hour time period.

Double click on the images to enlarge them.

Thursday night

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Friday

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Friday night

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Saturday

Double click on the images to enlarge them.

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Saturday night

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Sunday

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Sunday night

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Here is the WPC/NOAA rainfall forecast.

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Let me show you some models and their forecast rain totals.

Notice these are not for the same time periods.

Some of the models go out further than others.

Rain totals through Saturday 12 AM.

Rain totals through Saturday 12 pm.

Rain totals through Sunday 12 pm.

GFS model.  Rain totals through next Tuesday.

EC model.  Rain totals through next Tuesday.

You cam tale the general idea from those graphics.  More rain south.   Less rain north.

At this time, severe weather appears a no-go through next Tuesday.  I can’t 100% rule out lightning Sunday.

Let me show you some ensemble graphics.

What are ensembles?

First, the EC ensembles.

A few rain events will be possible.  Especially, over our southern counties.

Questions remain on how far north to take the precipitation.  Notice the higher totals are over the Tennessee Valley.

These maps represent the Mean of the ensembles.

Double click on the images to enlarge them.

This is through Tuesday.

GFS model.  Rain totals through Tuesday.  These maps represent the Mean of the ensembles.

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Here is a new model.  The NWS Blend of Models.  This is just what it sounds like.  It blends a bunch of models together.

Again, notice the placement of heavier rain totals south vs north.

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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.
  3.  The EC European weather model is in Zulu time.

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What am I looking at? 
You are looking at different models.  Meteorologists use many different models to forecast the weather.  All models are wrong.  Some are more wrong than others.  Meteorologists have to make a forecast based on the guidance/models.

I show you these so you can see what the different models are showing as far as precipitation.  If most of the models agree, then the confidence in the final weather forecast increases.

You can see my final forecast at the top of the page.

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This animation is the Storm Prediction Center WRF model.

This animation shows you what radar might look like as the next system pulls through the region.  It is a future-cast radar.

Time-stamp upper left.  Click the animation to enlarge it.

 

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This animation is the Hrrr short-range model.

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This animation is the 3K NAM American Model.

This animation shows you what radar might look like as the next system pulls through the region.  It is a future-cast radar.

Time-stamp upper left.  Click the animation to enlarge it.

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This next animation is the lower-resolution NAM American Model.

This animation shows you what radar might look like as the system pulls through the region.  It is a future-cast radar.

Time-stamp upper left.  Click the animation to enlarge it.

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This next animation is the GFS American Model.

This animation shows you what radar might look like as the system pulls through the region.  It is a future-cast radar.

Time-stamp upper left.  Click the animation to enlarge it.

The system later today and tonight.  Weak event.

Short-range.  The GFS pops some light sprinkles along the incoming Wednesday cold front.  Do not expect much if anything at all.

 

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This next animation is the EC European Weather model.

This animation shows you what radar might look like as the system pulls through the region.  It is a future-cast radar.

Time-stamp upper left.  Click the animation to enlarge it.

 

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Click here if you would like to return to the top of the page.

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Average high temperatures for this time of the year are around 53 degrees.

Average low temperatures for this time of the year are around 34 degrees.

Average precipitation during this time period ranges from 0.70″ to 1.00″

Yellow and orange colors are above average temperatures.  Red is much above average.  Light blue and blue are below-average temperatures.  Green to purple colors represents much below-average temperatures.

This outlook covers  February 25th through March 3rd

Click on the image to expand it.

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The precipitation forecast is PERCENT OF AVERAGE. Brown is below average. Green is above average. Blue is much above average.

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Average high temperatures for this time of the year are around 55 degrees

Average low temperatures for this time of the year are around 35 degrees

Average precipitation during this time period ranges from 0.70″ to 1.00″
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This outlook covers  March 4th through March 10th

Click on the image to expand it.

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The precipitation forecast is PERCENT OF AVERAGE. Brown is below average. Green is above average. Blue is much above average.

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THIS IS UPDATED ON TUESDAY AND FRIDAY
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Outlook definitions
EC = Equal chances of above or below average
BN= Below average
M/BN = Much below average
AN = Above average
M/AN = Much above average
E/AN = Extremely above average
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Average high temperatures for this time of the year are around 57 degrees
Average low temperatures for this time of the year are around 37 degrees

Average precipitation during this time period ranges from 1.40″ to 2.00″

This outlook covers March 9th through March 22nd

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Precipitation outlook

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LONG RANGE DISCUSSION

Key Points: This was written by the BAMwx team. I don’t edit it.

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E/BN extremely below normal.
M/BN is much below normal
EC  equal chances
AN above normal
M/AN much above normal
E/AN extremely above normal.

February Temperature Outlook

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February Precipitation Outlook

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Spring Outlook

E/BN extremely below normal.
M/BN is much below normal
EC  equal chances
AN above normal
M/AN much above normal
E/AN extremely above normal.

March, April, and May Temperature Outlook

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March, April, and May Precipitation Outlook

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E/BN extremely below normal.
M/BN is much below normal
EC  equal chances
AN above normal
M/AN much above normal
E/AN extremely above normal.

And the preliminary March outlooks

Temperature departures

Precipitation

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And the preliminary April outlooks

E/BN extremely below normal.
M/BN is much below normal
EC  equal chances
AN above normal
M/AN much above normal
E/AN extremely above normal.

Temperature departures

Precipitation

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And the preliminary May outlooks

E/BN extremely below normal.
M/BN is much below normal
EC  equal chances
AN above normal
M/AN much above normal
E/AN extremely above normal.

Temperature departures

Precipitation

 

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Radar Link: Interactive local city-view radars & regional radars.

You will find clickable warning and advisory buttons on the local city-view radars.

If the radar is not updating then try another one. If a radar does not appear to be refreshing then hit Ctrl F5. You may also try restarting your browser.

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.

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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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2016-11-19_11-50-24

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