Disasters · Storm surgeContinuing story · report 6 of 7

Lower Plaquemines faces 3–5-foot surge forecast—and an unresolved warning clock

Port Sulphur, Empire and Venice are named in a potentially life-threatening surge forecast through Saturday morning. A voluntary evacuation covers Tidewater Road businesses; conflicting expiration times are no all-clear.

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5 quiet days
  1. Update 1Isaias disrupts Gulf Coast plans as a possible hurricane landfall nears
  2. Update 2Coastal Jefferson warned of possible 4–6-foot flooding before Friday surge window
  3. Update 3Lower St. Bernard warned of 3–5 feet of surge above ground
  4. Update 4Southern Harrison’s 3–5-Foot Surge Threat Is Not Just a Wind Story
  5. Update 5Coastal Bay faces 4–7-foot surge risk as wind threat increases
  6. Update 6Lower Plaquemines faces 3–5-foot surge forecast—and an unresolved warning clockYou are here
  7. Update 7Isaias leaves 600,000-plus customers without power ahead of Sunday storm riskNewer

What changed since our last report

Within the hour

Then

Coastal Bay faces 4–7-foot surge risk as wind threat increases

What we said was still open

  1. The exact landfall point, strength near shore and eventual wind, surge and flooding impacts remain unresolved.

    Still open

    The new record supplies local surge and wind forecasts, not an established landfall point, near-shore storm strength or measured impacts. Those outcome questions remain unresolved.

  2. Watch for official intensity and track updates, any changes from watches to warnings, and specific evacuation or closure announcements.

    Still open

    Protective-action reporting is partly established by the voluntary evacuation for Tidewater Road businesses in Venice, and earlier listings show Lower Plaquemines already had warnings Thursday. Verified continuing warning status, updated intensity and track, broader evacuation instructions, shelters and closures remain unestablished. 11314

Now

Port Sulphur, Empire and Venice are named in a potentially life-threatening surge forecast through Saturday morning. A voluntary evacuation covers Tidewater Road businesses; conflicting expiration times are no all-clear.

What moved

  • The available morning warning record forecasts potentially life-threatening surge through Saturday morning; its expiration remains unresolved.

Lower Plaquemines faces a potentially life-threatening storm-surge forecast through Saturday morning, but the warning record gives two conflicting expiration times on Friday—five hours apart. Neither time is a reliable signal that the water danger will be over. The urgent issue is the forecast itself: water could reach 3–5 feet above normally dry ground somewhere in surge-prone areas, with Port Sulphur, Empire and Venice named in the warning. 1

The available National Weather Service record identifies the warning as issued by its New Orleans office at 4:12 a.m. Central Daylight Time on Friday, October 9, 2026. It says surge flooding greater than 3 feet above ground is possible and could threaten life. The complete official warning could not be independently recovered, so these particulars rest on the available alert record—not a separately verified copy of its full text. 1

That distinction matters, but it does not turn a dangerous forecast into a report of disaster already under way. The reporting available as of 11:09 UTC October 9—6:09 a.m. CDT—does not establish observed flooding in any of the three named communities, a measured local surge height, a damage tally or a displacement count. Those are gaps in the evidence, not proof that impacts are absent. 1 13 14

In reports aired October 9 UTC, we described surge warnings for Lower St. Bernard in Louisiana and Coastal Jefferson County in Florida, carrying forecasts of 3–5 feet and 4–6 feet respectively. This morning’s development supplies a warning record specifically for Lower Plaquemines. It does not establish that Lower Plaquemines has only now entered a warning: earlier products were recorded on Thursday.

Warnings and action before Friday morning

  1. October 8, 4 p.m. CDT

    A voluntary evacuation takes effect for businesses along Tidewater Road in Venice.

    1314
  2. October 8, 4:13 p.m. CDT

    AreaZine records a Lower Plaquemines warning, with a listed expiration of 12:15 a.m. CDT October 9.

    10
  3. October 8, 10:01 p.m. CDT

    AreaZine records another Lower Plaquemines warning, with a listed expiration of 6:15 a.m. CDT October 9.

    4
  4. October 9, 4:12 a.m. CDT

    The available morning warning record forecasts potentially life-threatening surge through Saturday morning; its expiration remains unresolved.

    1

What three to five feet means

The forecast describes water depth over land that is ordinarily dry, not an elevation measured from sea level. “Somewhere” is essential: it does not predict the same depth across Lower Plaquemines, or at every home and business. The National Hurricane Center defines a storm-surge warning as danger from rising water moving inland from the shoreline somewhere within the specified area. 9 19

The concern extends through Saturday morning. October 9, 2026, is Friday, so the following Saturday is October 10. That resolves the calendar reference in the warning’s wording; it does not resolve where flooding will occur or how high the water will ultimately reach. 1 25

The local wind forecast calls for peak winds of 25–35 mph, with gusts up to 65 mph. These are predictions, not observed readings, and they do not establish the storm’s overall maximum sustained wind. Wind and surge are separate hazards. The water warning remains consequential without a stronger local wind forecast. 1

A narrow evacuation, not a blanket order

There is one corroborated protective action with a specific place and start time. Plaquemines Parish President Keith Hinkley issued a voluntary evacuation for businesses along Tidewater Road in Venice, effective Thursday, October 8, at 4 p.m. CDT. WGNO and WDSU report the action; WWL-TV also reports it. The full official parish announcement was not independently recovered. 13 14 16

The action addressed potential 3–5-foot surge associated with Isaias and possible effects on travel and roadway conditions Thursday night and Friday. Its scope cannot be enlarged by implication: it was voluntary, covered businesses along Tidewater Road, and does not establish a mandatory departure order for all Lower Plaquemines residents or an evacuation order naming Port Sulphur or Empire. Possible roadway problems do not establish that Tidewater Road has closed. 13 14

No event-specific shelter opening, shelter address, actual road closure or mandatory parish-wide evacuation is established in the available reporting at the 11:09 UTC cutoff. The parish website’s “Mandatory Evacuation” page, without a dated order and affected area in the available excerpt, cannot supply that missing evidence. A weather warning identifies a hazard; it is not itself an evacuation order. 12 17 19

The clock cannot settle the danger

The expiration discrepancy is material. The descriptive account says 5:15 p.m. CDT October 9, equivalent to 22:15 UTC. The associated timestamp instead says 17:15 UTC, equivalent to 12:15 p.m. CDT. These are not two ways of expressing the same moment. Without the matching full official record, neither can be confirmed as the exact expiration. 1

Both proposed times also fall before the stated concern extending through Saturday morning. Product expiration does not demonstrate that dangerous water has receded, that a warning has been cancelled, or that authorities have issued an all-clear. No later Lower Plaquemines product matching or superseding the morning warning is established here. 1

A related tropical cyclone local statement covered Lower Plaquemines and other areas from 10:13 p.m. CDT Thursday to 6:15 a.m. CDT Friday. That was a broader, different product. Its ending time cannot verify the complete morning warning or prove that the individual warning was replaced. Nor can the earlier Thursday warning listings resolve Friday morning’s conflicting expiration fields. 8 4 10

The morning warning’s preparation section is incomplete, and its missing instructions cannot responsibly be reconstructed as event-specific advice. Independently established general guidance is clear: follow evacuation orders, heed emergency-management evacuation advice, and do not enter floodwaters on foot or in a vehicle. That guidance does not imply that an additional local order has been issued. 18 29 30 32

Sources and supporting reference material

National Weather Service: Lower Plaquemines storm-surge warning record, October 9, 4:12 a.m. CDT. 1

NWS: New Orleans-area watch and warning summary. 2

Forth: NWS storm-surge and tropical-storm warning excerpt. 3

AreaZine: Lower Plaquemines October 8 evening warning listing. 4

National Hurricane Center: New Orleans-area local statement text. 5

NWS: New Orleans-area briefing document. 6

NHC: Local statement archive endpoint. 7

Weather Alert Watch: Multi-area tropical cyclone local statement. 8

NWS: Hurricane storm-surge threats and impacts interactive display. 9

AreaZine: Lower Plaquemines October 8 afternoon warning listing. 10

Defcon Level: October 8, 10:01 p.m. CDT NWS warning listing. 11

Plaquemines Parish: Official website. 12

WGNO: Voluntary evacuation for Venice-area businesses. 13

WDSU: Venice Tidewater Road voluntary evacuation. 14

WDSU: Shrimper prepares for upcoming storm conditions. 15

WWL-TV: Voluntary evacuation for Plaquemines businesses. 16

Plaquemines Parish: Mandatory Evacuation page. 17

NWS: New Orleans-area hurricane storm-surge threats and impacts guidance. 18

NHC: Storm Surge Products. 19

NHC: Hurricane Isaias public advisory. 20

NHC: Local statement endpoint listed as Tropical Storm Bertha Advisory 12; not verification of this warning. 21

NHC: Atlantic public advisory text endpoint. 22

Pastebin: Truncated NWS API excerpt. 23

NWS: Alerts Web Service documentation. 24

Global Incident Tracker: Lower Plaquemines October 9 warning listing. 25

API Evangelist: NOAA alerts API specification. 26

NOAA: Stay Protected During Storms. 27

NWS: Actions to Take When a Tropical Storm or Hurricane Threatens. 28

NWS: During a Flood. 29

NWS: Turn Around Don't Drown. 30

NWS: Basic flood safety rules. 31

NOAA: Hurricane safety, explained. 32

NOAA: Alternate Stay Protected During Storms page. 33

As aired 14 lines
  1. On October 9 we reported regional surge warnings. Now Lower Plaquemines faces a three-to-five-foot surge forecast. Water moving inland could threaten lives in Port Sulphur, Empire and Venice. The concern extends through Saturday morning.
  2. The immediate question is what protection is in place, and when residents can safely consider the danger over.
  3. The forecast puts three to five feet of water over normally dry ground somewhere in surge-prone areas. The warning says flooding above three feet could threaten life. That depth is measured from the ground beneath the water.
  4. The forecast doesn't put the same depth at every home or business. Conditions can vary within the warned area. The danger comes from water pushed inland from the shoreline, reaching land that's ordinarily dry.
  5. Port Sulphur, Empire and Venice are all named in the warning. A separate voluntary evacuation covers businesses along Tidewater Road in Venice. That action has a narrower reach than the surge warning covering Lower Plaquemines.
  6. The National Weather Service office in New Orleans issued the morning warning on Friday, October 9, at four twelve a.m. Central time. Its forecast reaches through Saturday morning, October 10. That's the period of concern residents need to keep in mind, even though the warning's expiration time is disputed.
  7. Local gusts could reach sixty-five miles an hour. The forecast also calls for peak local winds of twenty-five to thirty-five miles an hour. Those figures describe expected conditions in this area, and the surge brings its own danger.
  8. The wind figures are forecasts. Actual conditions still have to be measured as the storm reaches the area. Residents shouldn't use the local wind forecast to judge how much water could move inland. The warning identifies a potentially life-threatening water hazard on its own.
  9. Parish President Keith Hinkley issued a voluntary evacuation for businesses along Tidewater Road in Venice. It took effect Thursday, October 8, at four p.m. The action addressed potential three-to-five-foot surge associated with Isaias and possible effects on travel.
  10. Officials were concerned about roadway conditions Thursday night and Friday. Businesses in that area were given a voluntary evacuation instruction. Its scope covers those businesses; it doesn't require every Lower Plaquemines resident to leave. Possible roadway problems also don't mean Tidewater Road has closed.
  11. Lower Plaquemines had warnings Thursday, too. One was issued at four thirteen p.m., with a listed expiration of twelve fifteen a.m. Friday. Another followed at ten oh one p.m., with a listed expiration of six fifteen a.m. Friday.
  12. A broader tropical cyclone local statement also covered Lower Plaquemines and other areas. It began at ten thirteen p.m. Thursday and ended at six fifteen a.m. Friday. That statement covered several areas together. Its ending time doesn't tell residents whether officials replaced the individual morning surge warning.
  13. The morning warning has two conflicting expiration times, twelve fifteen p.m. and five fifteen p.m. Central time. They're five hours apart. The exact expiration and any replacement or cancellation still need clarification, especially as the earlier time approaches.
  14. Both times fall before Saturday morning, when the forecast concern ends. A warning's clock can't tell residents whether dangerous water has receded. Safety depends on conditions and official instructions. Follow evacuation orders and emergency-management advice, and don't enter floodwaters on foot or in a vehicle.

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  1. r1First published.