Southeast Louisiana and Southern Mississippi partners -
Here is an update concerning the severe weather threat this evening into early tomorrow morning.
Changes from previous update:
- No substantive changes to information in this morning's email. Confidence remains high in the threat and timing of the severe weather across our area.
- Not Severe, but associated with the general weather pattern - winds not associated with thunderstorms are a concern...
- a Wind Advisory is in place for all land areas through midnight tonight for non-thunderstorm wind gusts around 40mph.
- a Small Craft Advisory is in place for all marine areas (including lakes and sounds) until 6AM Tuesdayfor non-thunderstorm winds of up to 25kt.
Overview:
WHAT: SLIGHT RISK of Severe Weather
WHEN: Sunday evening into Sunday night.
WHERE: Areas along and north of I-10/12 corridor, especially west of I-55.
CONFIDENCE:
- Confidence is high that severe thunderstorms embedded within a line of storms will develop on Sunday afternoon and move east across Louisiana.
- Confidence is high in the timing of this line of thunderstorms as it arrives in our area Sunday evening.
- Confidence is increasing that this line will weaken as it moves across the I-55 corridor and the severe threat will quickly diminish as the line reaches the coast.
Impacts:
The main threats associated with any severe storms will be-
Damaging Winds:
- Storms capable of wind gusts greater than 60 mph.
- Winds of this magnitude are capable of causing damage to trees and power lines, leading to isolated/scattered power outages
Tornadoes:
- Stronger storms embedded within this line could produce a tornado.
Rainfall:
- Runoff will lead to ponding of water in low lying areas and areas of poor drainage.
- If the line of storms weakens before arrival, the flooding threat will decrease.
The attached briefing/graphic(s) below highlights the threats and timing associated with this system.
