Tropical Updates

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Hurricane Delta Update - 10/7/20 at 4PM

Click HERE for an update concerning Hurricane Delta.

Changes from previous update: 

No changes


  • Hurricane Delta is forecast to move generally northwest across the Yucatan Peninsula this morning. The system is expected to bring impacts to the northern Gulf coast from Thursday night through Saturday.


  • If the current forecast holds, we remain confident that moderate to significant impacts will be experienced across portions of SE LA and S MS

  • There continues to be some uncertainty in the track but more so the intensity forecast. At some point, the system is expected to turn more northward and depending on when and where that occurs the expected impacts could still change significantly.


Storm Surge

  • 7-11 feet of inundation: Pecan Island to Port Fourchon
  • 4-6 feet of inundation: Port Fourchon to Ocean Springs, including Lake Borgne
  • 3-5 feet of inundation: Lake Pontchartrain and Maurepas
  • 2-4 feet of inundation: Ocean Springs to the AL/FL State Line

Heavy rainfall: 

  • 4-8 inches will be possible generally west of I-55 and north of I-10 in SE LA and S MS. 
  • Less than 4 inches is forecast for the rest of SE LA and coastal MS
  • Locally higher or double amounts are possible for our area, especially if any banding sets up over the area


  • Hurricane Force winds will be possible along the Atchafalaya Basin and coastal Louisiana up to Grand Isle. 
  • Tropical Storm force winds will be possible over the rest of SE LA and S MS eastward, which includes Baton Rouge metro, New Orleans metro, S MS Counties, Pearl River, and Hancock County.

The attached briefing highlights the threats associated with this system.

Additional Information and Resources:

NWS New Orleans Website:

NWS New Orleans DSS Website:

NWS New Orleans Tropical Page:

River Gauges and Forecasts:

NWS New Orleans Facebook:

NWS New Orleans Twitter:

Online Severe Weather Reporting:

National Hurricane Center Website: https:///

Next Update and Contact Information:

The next update will be sent after the 10PM CDT advisory.

Vicki Travis LEM
Deputy Director
Homeland Security & Emergency Management
Phone: 985-748-2271
Mobile: 985-634-0234


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