Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
Nothing else has been detected within 20 km in the last 24 hours.
This alert is in force until 10 September 2026, 20:15 UTC.
It is the 18th strongest of the 22 detections recorded within 20 km of this point since 26 April 2026. The last comparable one was on 23 August 2026.
What the source measured
NOAA reported: Flash Flood Warning issued September 10 at 12:08PM CDT until September 10 at 3:15PM CDT by NWS New Orleans LA
An estimated 48,422 people live within 50 km of this point.
Nearby, since 26 April 2026
- May 9, 2026 · score 39 · 18.2 km
- May 22, 2026 · score 34 · 22.1 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 87 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 87% |
| Coordinates | 30.4761, -90.0088 |
| Nearest City | Slidell (31 km) |
| Population Exposed | 48.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-10T17:08:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.73d774e80e68eb04fba8615da4c5724e4488fce0.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Livingston, LA; St. Helena, LA; Tangipahoa, LA; Hancock, MS; Harrison, MS |
| Headline | Flash Flood Warning issued September 10 at 12:08PM CDT until September 10 at 3:15PM CDT by NWS New Orleans LA |
| Expires | 2026-09-10T15:15:00-05:00 |
| SenderName | NWS New Orleans LA |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.73d774e80e68eb04fba8615da4c5724e4488fce0.001.1","noaa_urn:oid:2.49.0.1.840.0.93d5c4f2a6a4c0d0ec67cbfa5a9fc2d465600044.001.1"] |
| Iem TypeSummary | F |
| Iem City | 2 WSW Pass Christian |
| Iem County | Harrison |
| Iem State | MS |
| Iem Wfo | LIX |
| Iem Remark | Lots of ponding water along Hwy 90 between Waveland and Gulfport. |
| MergedSources | [{"id":"iem_F_30.020_-90.270_1789042500000","source":"iem","severity":"low","severityValue":25,"timestamp":1789042500000,"latitude":30.02,"longitude":-90.27},{"id":"iem_F_30.310_-89.270_1789056000000","source":"iem","severity":"low","severityValue":25,"timestamp":1789056000000,"latitude":30.31,"longitude":-89.27}] |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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.
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