Weather Report

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Weather Report

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Overview:

Confidence is increasing that an unseasonably warm and moist environment ahead of a strong storm system will set the stage for a rather long-duration (multi-round) period of active weather, including strong to severe storms, capable of producing damaging winds, tornadoes and localized flash flooding.

Primary Storm Threats:

  • Damaging winds > 60 MPH 
  • Tornadoes (best chance south and west of an Ellijay to Gainesville to Athens line)
  • Flash Flooding (and river/stream/creek flooding) due to multiple rounds of heavy rain/storms

Timing: see simulated graphic below

**Round 1 — beginning late this afternoon**

  • 4PM to 9PM — north/west of I-85
  • 7PM to Midnight — south/east of I-85

**Round 2 — beginning after midnight tonight**

  • 1AM to 8-10AM (Wednesday) — north/west of I-85
  • 7AM to 3-6PM — south/east of I-85

** Radar (model) simulation — from ~4PM today through 5AM Wednesday **

hrrr-georgia-refc-1672761600-1672779600-1672826400-40.gif

** Other Graphics / Event Information **

1. Storm Threat Risk (goes along with SPC Day 1 Outlook)

20230103_SvrThreatGraphic.png

2. SPC Severe Risk Outlook — 1st graphic is through 7AM Wed // 2nd graphic is 7AM Wed through ~4-6PM Wednesday afternoon when severe threat is expected to exit the forecast area **these graphics are subject to change with future updates **

SPC_CO_Zoom_Day1.png
SPC_CO_Zoom_Day2.png

3. Heavy Rainfall / Flash Flood Risk (through early Wednesday AM)

  • Areas in red have a 4 in 10 chance of seeing FLASH FLOODING
  • Areas in yellow have nearly a 2 in 10 chance of seeing FLASH FLOODING.
WPC_Zoom_Day1ExcessiveRainfall.png

4. Expected Storm Total Rainfall — through Wednesday afternoon

20230103_StormTotalQPF.png

Additional information and resources:

  • We will continue to update everyone on this evolving, multi-round storm system through the night, either via email and/or NWSChat. For updated graphics on outlooks, and storm/flood risks, see below…
  • NWS Atlanta Decision Support Page– source for various graphics and resources to aid decision support, with links to more specialized forecast information
    NWS Point Forecast Page– provides the forecast for a single location straight from the NWS database and is customizable to fit your needsNWS Atlanta/Peachtree City Contact Information– for immediate questions, concerns, or storm reports:* NWSChat: ffcchatEmail: sr-ffc.mets@noaa.gov* Phone: 770-486-1133 (option 4)

Thank you always for your support, and please be safe out there through tomorrow! 

-NWS Peachtree City/Atlanta Decision Support Team

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