Dense Fog Advisory

DESCRIPTION: …Dense Fog Advisory In Effect Until 9 Am Est This Morning…

The National Weather Service In Peachtree City Has Issued A Dense Fog Advisory…Which Is In Effect Until 9 Am Est This Morning.

* Locations…Mainly From La Grange To Athens Initially But Gradually Spreading Over Remaining Locations Through Daybreak.

* Visibilities…Periods Of Quarter Mile Or Less Visibility Are Expected.

* Timing…Through 9 Am.

* Impacts…Hazardous Driving Conditions.

 

INSTRUCTION: A Dense Fog Advisory Means Visibilities Will Frequently Be Reduced To Less Than One Quarter Mile. If Driving…Slow Down…Use Your Headlights…And Leave Plenty Of Distance Ahead Of You.

 

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Flood Watch

DESCRIPTION: …Flood Watch Remains In Effect From Friday Afternoon Through Saturday Afternoon…
The Flood Watch Continues For
* Portions Of North And All Of Central Georgia.
* From Friday Afternoon Through Saturday Afternoon.
* Periods Of Heavy Rain Will Occur Early Friday Through Saturday Over Portions Of North Georgia And All Of Central Georgia. The Watch Area Will Be Mainly South Of A Line From Cedartown To Cumming To Homer. Rainfall Amounts Of Around 2 Inches Can Be Expected Over Portions Of North Georgia. Rainfall Amounts Of
0.25 To 0.50 Inch Have Already Occurred Over Extreme North Georgia Since 600 Pm Edt On Thursday Evening. Rainfall Amounts Around 4 Inches Are Expected Over Central Georgia.
The Watch Time Period Is For The First Round Of Heavy Rain Expected For The Weekend. A Second Round Of Potentially Heavy Rain May Add Another 1 To 2 Inches Over The Watch Area Sunday Night Into Monday. This May Require An Extension Or Another Watch Issuance.
* Localized Flash Flooding Will Be Possible If The Heavy Rain Repeatedly Moves Over The Same Area. Also…Storm Drains…
Ditches…And Low Lying Areas May Become Quickly Clogged With Debris And Cause Extensive Street Flooding.
Widespread Minor Flooding Of The Larger Creeks Or Rivers Is Most Likely To Occur With The Expected Storm Total Rainfall Amounts.
This Would Include The Chattahoochee…Flint…Ocmulgee And Oconee River Basins And Their Associated Tributaries…Mainly South Of Atlanta To Athens.
However…Due To Wet Antecedent Soil Conditions…Isolated Significant Flooding May Affect Flood Prone Roads And Structures Nearby. This Will Be Possible In The Abbeville Area Since The Ocmulgee River Was In Minor Flood Just This Week.
Precautionary/preparedness Actions…
A Flood Watch Means There Is A Potential For Flooding Based On Current Forecasts.
You Should Monitor Later Forecasts And Be Alert For Possible Flood Warnings. Those Living In Areas Prone To Flooding Should Be Prepared To Take Action Should Flooding Develop.

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Flash Flood Watch

DESCRIPTION: …Flash Flood Watch In Effect From This Evening Through Monday Afternoon…
The National Weather Service In Peachtree City Has Issued A
* Flash Flood Watch For North Georgia…Generally Along And North Of A Line From Carrollton…To Atlanta…To Athens…To Lexington.
* From 7 Pm Est This Evening Through 1 Pm Est Monday Afternoon.
* Heavy Rain Will Develop Across North Georgia This Evening And Continue Into Monday Morning. Rainfall Amounts Of 1 To 3 Inches Are Expected Across North Georgia By Monday Morning.
* Recent Rainfall Has Made The Soil Very Moist Across North Georgia. As The Rain Is Likely Fall Quickly Tonight…Flash Flooding Could Develop Along Small Streams And Creeks. Flooding Will Also Be Possible Along Larger Streams And Rivers.

INSTRUCTION: A Flash Flood Watch Means That Conditions May Develop That Lead To Flash Flooding. Flash Flooding Is A Very Dangerous Situation.
You Should Monitor Later Forecasts And Be Prepared To Take Action Should Flash Flood Warnings Be Issued.

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Hydrologic Outlook

DESCRIPTION:

…Heavy Rain And Flooding Likely Over North Georgia Sunday Night Spreading Into Central Georgia By Tuesday…

 Rainfall Expected…

Storm Total Rainfall Amounts Of 2 To 4 Inches Are Forecast To Begin In North Georgia Sunday Night And Gradually Spread Into Central Georgia By Tuesday. Isolated Higher Amounts Will Be Possible. This Will Include The Atlanta Metro Area.

 Synopsis…

A Strong Low Pressure System Is Expected To Develop Over The Central Plains On Saturday And Move Into The Great Lakes Region Next Week. As This Occurs A Warm Front Over The Lower Mississippi River Valley Will Approach Georgia On Sunday As Moisture Returns To The Southeast United States. A Strong Low Level Jet Will Force Abundant Gulf Moisture In Advance Of An Approaching Cold Front Which Will Combine With The Orographic Effects Of The Georgia Mountains To Enhance The Rainfall. The Cold Front Should Stall Over South Georgia On Tuesday With Another Low Pressure System Moving Through North Georgia Tuesday Night. These Combined Weather Systems Will Maintain Periods Of Heavy Rain Over North And Central Georgia Through Early Wednesday.

 Pre-Existing Conditions…

Rainfall Amounts Of 5 To 10 Inches Have Occurred Over North Georgia Since The Beginning Of The Year…Generally North Of Interstate 20.

In Central Georgia…1 To 3 Inches Of Rain Occurred Just Yesterday.

Streamflow Levels Are Generally Normal To Above Normal In North Georgia And Are Rising Into The Normal Range In Central Georgia. Consequently…Moist Soil Conditions Exist With Some Areas Still Wet. This Will Allow Any Heavy Rain Early Next Week To Be Quickly Absorbed…Then Run Off Into Nearby Streams…Creeks And Rivers.

 Impacts…

Areas Of Flash Flooding Will Be Possible If The Heavy Rain Repeatedly Moves Over The Same Area. Also…Storm Drains And Ditches May Become Quickly Clogged With Debris And Cause Extensive Street Flooding And Road Ponding.

Minor Flooding Of Some Of The Larger Creeks Or Rivers Is More Likely With The Expected Storm Total Rainfall Amounts. However…Due To The Pre-Existing Conditions…Isolated Significant Flooding May Affect Flood Prone Roads And Some Structures Nearby.

This Weather Situation Should Become More Certain With Each Model Run…So Stay Alert For Possible Flood Watches And Future Warnings. Know What To Do If A Warning Is Issued And You Live Near A Creek Or River.

For Additional Hydrologic Information…Visit Our Website At Weather.Gov/atlanta. Click On The Rivers And Lakes Tab Under Current Weather To Access The Latest River Stage And Precipitation Information.

 

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