Please see the below weather update from the National Weather Service (NWS) New Orleans / Baton Rouge.
- A cold front will bring a marginal (level 1 of 5) threat of severe weather to our area.
- Main timing for East Baton Rouge Parish will be this evening 6:00 PM through early morning Tuesday around 6:00 AM.
- Rain amounts of 1″ can be expected on average with localized higher amounts of 4″ being possible today.
Overview:
WHAT:
· SLIGHT RISK of Heavy Rain leading to flash flooding
· Marginal Risk (level 1 of 5) of severe weather
· Coastal Flood Advisory for tides 1 to 2 feet above normal
· Small Craft Advisory for southeast winds 20 to 25 knots with gusts to 30 knots
WHEN:
· Heavy Rain & Severe Weather window - Roughly 6PM tonight thru 8AM Tuesday
· Coastal flooding - the overnight high tide cycle
· Small Craft Advisory - through midnight Tuesday night/Wednesday morning. Then again Wednesday into Thursday
WHERE: The greatest threat will be generally along and southeast of a line from Houma to Poplarville
· Heavy Rain - Greatest threat New Orleans Metro, Northshore of Lake Pontchartrain and MS coast
· Severe Weather - All of southeastern Louisina and southern Mississippi, especially west of I-55
· Coastal flooding - East facing shores of coastal parishes/counties of LA and MS
· Small Craft Advisory - mainly open Gulf waters
CONFIDENCE: We have high confidence that high rainfall rates will lead to at least nuisance flooding of some roads and other low lying/poor drainage areas Monday night into Tuesday morning. We have less confidence in the exact rainfall totals that will occur and how many storms will become severe.
Impacts:
· Intense rainfall rates can lead to Flash Flooding and event totals of 3 to 5 inches. There is a low (10%) chance of local amounts of up to 8 inches.
· In areas that receive the most rain, flash flooding could result in some roads becoming impassable, especially near underpasses
· Coastal Flooding - around a foot or 2 above normally dry ground during high tide cycles. Some roads may become impassable due to flooding, especially during high tide tomorrow night
· Severe Weather - IF any storms become severe, the greatest threat will be damaging wind gusts, but there is also a small (2-5%) chance of a few tornadoes