Calamity
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MediumSevere WeatherCS: 28 · v5

Severe Weather in United States

United StatesNOAA

Right now

The most recent data we hold from NOAA arrived 4 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.

Nothing else has been detected within 20 km in the last 24 hours.

Distance and hazards
Only these hazards

Tick none to hear about every hazard.

One message per event, not per detection. We send a confirmation first, and every message carries a link to stop them. We store the address and the place, nothing else.

This alert expired on 4 October 2026 at 21:45 UTC. It is kept here as a record.

It is the 6th strongest of the 8 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.

What the source measured

NOAA reported: Special Marine Warning issued October 4 at 3:48PM CDT until October 4 at 4:45PM CDT by NWS New Orleans LA

Urban PEI: 40,696 within a heuristic 50 km radius; not unique people.

Nearby, since 16 March 2026

How we know

One source: NOAA. Not yet confirmed by a second, independent source.

Our own score for this event is 28 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

Event data

TypeSevere Weather
SeverityMedium
Calamity Score (ours)28 / 100
Legacy data-support index0.81/1
Coordinates30.1456, -88.3773
Nearest cityPascagoula (31 km)
Urban exposure index (PEI)40.7K within 50 km
Impact tiersignificant
Timestamp2026-10-04T20:48:00.000Z
Sourcehttps://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.3ac51a0b70271b8843d069f2b64d6b3201e06d99.001.1
LicenceUS public domain · NOAA National Weather Service

Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: noaa. Occurrence: 2026-10-04T20:48:00.000Z.

First archived: 2026-10-04T20:48:06.668Z. Material modification: 2026-10-04T20:53:35.360Z.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

  1. 2026-10-04T20:53:35.360Z · data change

    Index 37 → 28.

Score breakdown

35
intensity
40
Urban PEI term
0
Scenario weight
18
Recorded reference / batch anomaly

Technical details

EventSpecial Marine Warning
MessageIdurn:oid:2.49.0.1.840.0.3ac51a0b70271b8843d069f2b64d6b3201e06d99.001.1
UrgencyImmediate
CertaintyLikely
AreaDescChandeleur Sound; Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM; South Mobile Bay; Coastal waters from Pensacola FL to Pascagoula MS out 20 NM; South Mobile Bay; Mississippi Sound; Coastal waters from Pensacola FL to Pascagoula MS out 20 NM and 1 more areas
HeadlineSpecial Marine Warning issued October 4 at 3:48PM CDT until October 4 at 4:45PM CDT by NWS New Orleans LA
Expires2026-10-04T16:45:00-05:00
SenderNameNWS New Orleans LA
HasExactCoordstrue
MergedCount4
MergedIds["noaa_urn:oid:2.49.0.1.840.0.3ac51a0b70271b8843d069f2b64d6b3201e06d99.001.1","noaa_urn:oid:2.49.0.1.840.0.4867a66b7f506e7cd3d3d5c90f6ae1f6b28f01d9.001.1","noaa_urn:oid:2.49.0.1.840.0.1c47add8e5a4f88ae8adfa7fe40f5b4644b0222b.001.1","noaa_urn:oid:2.49.0.1.840.0.3684d96915c8dd3b8529b11c884312496c64d1cc.001.1"]

Safety information

What to do in dangerous seas

Three things first, then what to do before, during and after. From the US National Weather Service.

For this reportSevere Weather · United States

  1. Stay out of rough water

    High waves and strong currents can pull even strong swimmers out. Swim only where there are lifeguards.

    NWS

  2. Caught in a current? Swim sideways

    Do not fight it: swim parallel to the shore until you are out of it, or float and wave for help.

    NWS

  3. Keep off jetties and rocks

    Big waves sweep people off piers, breakwaters and rocks.

    NWS

Before, during, after. Here it is “after”.

Before · Before going to the sea

  • Check the forecast

    The beach and marine forecast, and the flags on the beach.

  • Ask the lifeguards

    They know today’s currents.

National Weather Service

During · When the sea is rough

  • Small boats stay in port

    Follow the harbour master and the marine warnings.

  • Helping someone

    Call a lifeguard or the emergency number; throw something that floats, do not jump in.

National Weather Service

After · When the sea calms

  • Currents last

    They can stay strong after the waves drop.

National Weather Service

If a life is in danger

911

Emergency number: United States

Call 911

Questions people ask

How do I get out of a rip current?

Stay calm and do not swim against it. Swim parallel to the shore until you are free, then swim back at an angle; or float and wave for help. Source: US National Weather Service.

Is a calm, sunny day safe?

Not always: rip currents often form on calm, sunny days. Swim near lifeguards. Source: US National Weather Service.

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