Beau Dodson's WeatherTalk Blog

July 12th and 13th, 2017: A cold front approaches from the north.

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This forecast update covers southern Illinois, southeast Missouri, western Kentucky. and northwest Tennessee.
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Wednesday Night Forecast Details:
Forecast
: Partly cloudy.  Warm and muggy.  An isolated evening thunderstorm possible.
Temperatures:   MO ~ 72 to 76     IL ~ 72 to 76    KY ~ 72 to 76   TN ~ 72 to 76
Winds:  South and southwest winds at 6 to 12 mph with gusts to 18 mph
What impacts are anticipated from the weather?  Isolated wet roadways and isolated lightning.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  No, but monitor updates
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 20%    IL ~ 20%    KY ~ 20%    TN ~ 20%
Coverage of precipitation
: None to isolated.
Should I cancel my outdoor plans? No

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July 13, 2017
Thursday Forecast Details
Forecast:  Mostly to partly sunny.  Hot and muggy.  Scattered thunderstorms possible, especially during the afternoon hours.  Heat index values of 95 to 102 degrees.
Temperatures:   MO ~ 88 to 94     IL ~ 88 to 94    KY ~ 88 to 94  TN ~ 88 to 94
Winds:  South and southwest winds at 5 to 10 mph with gusts to 16 mph
What impacts are anticipated from the weather?  Lightning.  Wet roadways.  Heavy downpours.
My confidence in the forecast verifying:  Medium.  Some adjustments are possible.
Is severe weather expected?  Low-end severe weather risk
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 40%    IL ~ 40%    KY ~ 30% to 40%    TN ~ 30% to 40%
Coverage of precipitation
: Scattered
Should I cancel my outdoor plans? No, but check radars.
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Thursday Night Forecast Details:
Forecast
: Partly cloudy.  Warm and muggy.  Scattered thunderstorms possible.
Temperatures:   MO ~ 70 to 75     IL ~ 70 to 75    KY ~ 70 to 75   TN ~ 70 to 75
Winds:  South and southwest winds at 3 to 6 mph with gusts to 14 mph
What impacts are anticipated from the weather?  Wet roadways and lightning.  Heavy downpours.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  Low-end severe weather risk.
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 30%    IL ~ 30%    KY ~ 30%    TN ~ 30%
Coverage of precipitation
: Scattered
Should I cancel my outdoor plans? No, but monitor radars

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July 14, 2017
Friday Forecast Details
Forecast:  Mostly to partly sunny.  Scattered thunderstorms possible.  Warm.  Rain chances shifting southward with time.  Rain chances ending near Mt Vernon, first and then southward from there.
Temperatures:   MO ~ 86 to 92     IL ~ 86 to 92    KY ~ 86 to 92  TN ~ 86 to 92
Winds:  South winds 5 to 10 mph with gusts to 16 mph.  Winds behind the front will become west and northwest.
What impacts are anticipated from the weather?  Lightning.  Wet roadways.  Heavy downpours.  Some storms could produce high winds.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  Low-end severe weather risk.
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 40%    IL ~ 40%    KY ~ 40% to 50%    TN ~ 40% to 50%
Coverage of precipitation
: Scattered
Should I cancel my outdoor plans? Have alternative plans in case storms move into the area.
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Friday Night Forecast Details:
Forecast
: Partly cloudy.  Warm.  Scattered thunderstorms possible, especially early.  Rain chances shifting southward with time.  Rain chances ending near Mt Vernon, first and then southward from there.
Temperatures:   MO ~ 66 to 72     IL ~ 65 to 70    KY ~ 66 to 72   TN ~ 66 to 72
Winds:  Variable winds at 3 to 6 mph with gusts to 12 mph.  Winds becoming northwest and north.
What impacts are anticipated from the weather?  Wet roadways and lightning.  Heavy downpours possible.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  Evening storms could be intense with strong winds.
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 30%    IL ~ 30%    KY ~ 40%    TN ~ 50%
Coverage of precipitation
: Scattered, but perhaps ending from north to south.
Should I cancel my outdoor plans?  Evening plans could be interrupted by scattered storms.  Monitor radars and updates.
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There remain some questions about thunderstorm activity lingering into Saturday morning across the Missouri Bootheel and then along the KY/TN border.  Lower than normal confidence on the Saturday morning forecast.
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July 15, 2017
Saturday Forecast Details
Forecast:  Mostly to partly sunny.  Warm.  Perhaps less muggy.  Small chance for a storm near the KY/TN border and then southward from there.
Temperatures:   MO ~ 85 to 90     IL ~ 85 to 90    KY ~ 85 to 90  TN ~ 85 to 90
Winds:  North winds at 5 to 10 mph.
What impacts are anticipated from the weather? Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 0%    IL ~ 0%    KY ~ 20%    TN ~ 20%
Coverage of precipitation
:  Most likely none
Should I cancel my outdoor plans? No
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Saturday Night Forecast Details:
Forecast
: Mostly clear and mild.
Temperatures:   MO ~ 65 to 70     IL ~ 65 to 70    KY ~ 65 to 70   TN ~ 65 to 70
Winds:  North winds at 3 to 6 mph
What impacts are anticipated from the weather? Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 0%    IL ~ 0%    KY ~ 0%    TN ~ 0%
Coverage of precipitation
: Most likely none
Should I cancel my outdoor plans? No

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July 16, 2017
Sunday Forecast Details
Forecast:  Mostly to partly sunny.
Temperatures:   MO ~ 84 to 88     IL ~ 84 to 88     KY ~ 84 to 88    TN ~ 84 to 88
Winds:  North winds at 5 to 10 mph.
What impacts are anticipated from the weather?  Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 0%    IL ~ 0%    KY ~ 0%    TN ~ 10%
Coverage of precipitation
:  Most likely none
Should I cancel my outdoor plans? No
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Sunday Night Forecast Details:
Forecast
: Partly cloudy.  Warm.
Temperatures:   MO ~ 65 to 70     IL ~ 65 to 70    KY ~ 65 to 70   TN ~ 65 to 70
Winds:  North winds at 3 to 6 mph
What impacts are anticipated from the weather?  Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 10%    IL ~ 10%    KY ~ 10%    TN ~ 10%
Coverage of precipitation
: Most likely none.
Should I cancel my outdoor plans? No

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July 17, 2017
Monday Forecast Details
Forecast:  Mostly to partly sunny.
Temperatures:   MO ~ 85 to 90     IL ~ 85 to 90     KY ~ 85 to 90      TN ~ 85 to 90
Winds:  Variable winds at 5 to 10 mph.
What impacts are anticipated from the weather?  Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?   No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 10%    IL ~ 10%    KY ~ 10%    TN ~ 10%
Coverage of precipitation
: Most likely none
Should I cancel my outdoor plans? No
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Monday Night Forecast Details:
Forecast
: Partly cloudy.  Warm.
Temperatures:   MO ~ 65 to 70     IL ~ 65 to 70    KY ~ 65 to 70   TN ~ 65 to 70
Winds: Variable winds at 3 to 6 mph
What impacts are anticipated from the weather?  Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 10%    IL ~ 10%    KY ~ 10%    TN ~ 10%
Coverage of precipitation
: Most likely none.
Should I cancel my outdoor plans? No

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July 18, 2017
Tuesday Forecast Details
Forecast:  Mostly to partly sunny.
Temperatures:   MO ~ 85 to 90     IL ~ 85 to 90     KY ~ 85 to 90      TN ~ 85 to 90
Winds:  Variable winds at 5 to 10 mph.
What impacts are anticipated from the weather?  Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?   No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 10%    IL ~ 10%    KY ~ 10%    TN ~ 10%
Coverage of precipitation
: Most likely none
Should I cancel my outdoor plans? No
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Tuesday Night Forecast Details:
Forecast
: Partly cloudy.  Warm.
Temperatures:   MO ~ 65 to 70     IL ~ 65 to 70    KY ~ 65 to 70   TN ~ 65 to 70
Winds: Variable winds at 3 to 6 mph
What impacts are anticipated from the weather?  Most likely none.
My confidence in the forecast verifying: Medium.  Some adjustments are possible.
Is severe weather expected?  No
The NWS defines severe weather as 58 mph winds or great, 1″ hail or larger, and/or tornadoes
What is the chance of precipitation
?  MO ~ 10%    IL ~ 10%    KY ~ 10%    TN ~ 10%
Coverage of precipitation
: Most likely none.
Should I cancel my outdoor plans? No

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A severe thunderstorm is defined as a storm that produces quarter size hail or larger, 58 mph winds or greater, and/or a tornado.  That is the official National Weather Service definition of a severe thunderstorm.

Wednesday night:  Isolated evening storms are possible.  Heavy rain, gusty winds, and cloud to ground lightning would be the concern.

Thursday into Friday night: Scattered thunderstorms are likely to occur along and ahead of an in-coming cold front.  Storms that do form could be intense.  Gusty winds, frequent lightning, heavy downpours, and small hail will be possible.  I can’t rule out a few severe thunderstorms.  Damaging wind gusts would be the primary concern.

Saturday through Monday:  A small risk for thunderstorms on Saturday morning for the Missouri Bootheel into northwest Tennessee and perhaps near the Kentucky and Tennessee border.  Most of the region should remain dry.

A weak cold front will approach on Sunday/Sunday night.  I can’t rule out a few storms along the front, although it appears moisture will be somewhat limited.

beausanalysis

How are you enjoying our summer weather?  It certainly does fell like summer outside.  Hot and muggy conditions will continue into Thursday.

The good news is that a cold front will enter our region on Thursday and Friday.  A second cold front is anticipated for Sunday and Sunday night.  Both of these fronts will provide some lift in the atmosphere.  They will also help shave a few degrees off the backyard thermometer.

Showers and thunderstorms will develop along and ahead of the Thursday/Friday cold front.  There will be plenty of moisture in the atmosphere for locally heavy rain.  Some areas may remain dry, while others pick up one to two inches of rain.  Slow moving storms can always produce higher amounts.  Keep that in mind.

Dew points will remain in the upper 60’s to middle 70’s ahead of the front.  PWAT values, a measure of moisture in the entire atmospheric column, will range from 1.7 to 2.2 inches.  High.  Again, plenty of moisture for storms to tap into.

Temperatures on Thursday and Friday will remain hot.  Highs will push into the upper 80’s to lower 90’s.  Clouds may knock a few degrees off the thermometer, but overall, it will be hot and muggy.

The front will sag into our northern counties on Thursday.  The best chances for scattered showers and thunderstorms will likely remain over the northern half of the region on Thursday and then slide southward with time.

Peak thunderstorm chances for southeast Missouri, far southern Illinois, western Kentucky, and northwest Tennessee may hold off until Friday.  That is not to say it won’t storm before then.

Thunderstorms that do form could produce gusty winds.  CAPE values of 1000 to 3000 are anticipated on Thursday and Friday.  That is quite a bit of energy.  Wind fields, however, are weak.  Stronger wind fields would increase the threat for severe thunderstorms.  As it stands, we will have a low-end risk for severe thunderstorms.  Damaging winds being the main concern.

Let me show you the 3K NAM model guidance.  These are future-cast radar images.  Models don’t handle this type of set-up all that great.  Take the general idea from these graphics and not specifics.

4 PM Thursday

7 PM Thursday

10 pm Thursday

Weekend Outlook

The front should sag to our south by Saturday.  That will cut off rain chances.  I will be monitoring how far south the front moves on Friday night.  If the front stalls, for a few hours, then thunderstorm chances may continue along the Kentucky and Tennessee border into Saturday morning.  Low confidence of that happening, but I am monitoring trends.

A second cold front arrives on Sunday/Sunday night.  Moisture, ahead of this front, will be limited.  I did include a slight chance for storms on Sunday and Sunday night.

Dew points, a measure of moisture in the lower atmosphere, will decrease on Saturday and Sunday.  This should help it feel a bit less humid outside.  It will remain warm over the weekend with highs in the middle to upper 80’s.  The lower dew points should help our cause, if only a bit.

Saturday high temperatures

Sunday high temperatures

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The official 6-10 day and 8-14 day temperature and precipitation outlook.  Check the date stamp at the top of each image (so you understand the time frame).
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The forecast maps below are issued by the Weather Prediction Center (NOAA)
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The latest 8-14 day temperature and precipitation outlook.  Note the dates are at the top of the image.  These maps DO NOT tell you how high or low temperatures or precipitation will be.  They simply give you the probability as to whether temperatures or precipitation will be above or below normal.
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Who do you trust for your weather information and who holds them accountable?

I have studied weather in our region since the late 1970’s.  I have 39 years of experience in observing our regions weather patterns.  My degree is in Broadcast Meteorology and a Bachelor’s of Science.

My resume includes:

Member of the American Meteorological Society.

NOAA Weather-Ready Nation Ambassador. 

Meteorologist for McCracken County Emergency Management.  I served from 2005 through 2015.

Meteorologist for McCracken County Rescue.  2015 through current

I own and operate the Southern Illinois Weather Observatory.

I am the chief meteorologist for Weather Talk LLC.  I am the owner of Weather Talk LLC.

I am also a business owner in western Kentucky.

Recipient of the Mark Trail Award, WPSD Six Who Make A Difference Award, Kentucky Colonel, and the Caesar J. Fiamma” Award from the American Red Cross

In 2005 I helped open the largest American Cross shelter in U.S. history in Houston, Texas.  I was deployed to help after Hurricane Katrina and Hurricane Rita.  I was a shelter manager of one of the Houston, Texas shelter divisions.

In 2009 I was presented with the Kentucky Office of Highway Safety Award. 

Recognized by the Kentucky House of Representatives for my service to the State of Kentucky leading up to several winter storms and severe weather outbreaks.

If you click on the image below you can read the Kentucky House of Representatives Resolution.

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I am also President of the Shadow Angel Foundation which serves portions of western Kentucky and southern Illinois.

There is a lot of noise on the internet.  A lot of weather maps are posted without explanation.  Over time you should learn who to trust for your weather information.

My forecast philosophy is simple and straight forward.

  • Communicate in simple terms
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WeatherBell is a great resource for weather model guidance.

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