Here’s an UPDATE on impact weather expected to affect north and central Georgia late tonight through Wednesday evening, as of 3:30PM EST Tuesday (November 17).
Changes from previous forecast (yesterday):
1. The heaviest rain associated with a broken “squall line” of showers/thunderstorms is expected to be about 3-6 hours slower than thought yesterday. This will place the axis of heavy rain entering northwest GA between 12PM (noon) and 3PM Wednesday. The heaviest rain should exit our eastern/southern-most counties after midnight, Wednesday night.
2. We are also expecting slightly higher total rainfall amounts (see attached graphic), especially across northeast Georgia where 3-4 inches of rain is possible.
- Heavy Rain — 1 to 3 inches of rain is expected (area-wide), with locally higher amounts, between midnight tonight and early Thursday morning, with much of this rain occurring between noon (12PM) and 10PM Wednesday.
- IMPACTS: localized flash flooding / minor flooding of area creeks/streams/rivers
- Strong (non-thunderstorm) winds — widespread gusty winds 15-30 MPH will develop tonight, especially in the higher elevations of North GA, and continue through Wednesday. Strongest wind gusts (> 35 MPH) are expected across exposed areas and mountain ridgetops of north Georgiabetween 12AM (midnight) and 12PM Wednesday.
- NOTE: brief higher wind gusts (45-55 MPH) within showers and thunderstorms are possible
- IMPACTS: downed trees/powerlines due to winds and saturated grounds from heavy rain.
- Severe Storms — the threat for widespread severe thunderstorms continues to remain LOW – but areas along and south of a Columbus to Macon to Warrenton line may see an increased storm threat Wednesday afternoon/evening.
- Heavy rain & minor flooding — High
- Timing of heaviest rain — Medium to High
- Strong (non-thunderstorm) winds — High
- Downed trees due to wind + saturated soils — Medium to High
- Total Rainfall FORECAST valid 1AM Tonight to 7AM Thursday
- NOTE: Much of this rain is expected to occur in just a 4-8 hour window Wednesday afternoon/evening
- Peak Wind Gusts – strongest wind gusts forecast to occur between midnight (tonight) and 3PM Wednesday