Right now
The most recent data we hold from NOAA arrived 4 minutes 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.
This alert expired on 21 July 2026 at 11:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 52 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Storm Surge Watch issued July 20 at 10:10PM CDT by NWS Mobile AL
Urban PEI: 222,013 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- July 20, 2026 · score 37 · 0.0 km
- June 3, 2026 · score 43 · 6.5 km
- July 21, 2026 · score 43 · 10.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 30.1692, -89.1123 |
| Nearest City | Long Beach (20 km) |
| Urban exposure index (PEI) | 222.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T03:10:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Storm Surge Watch_noaa_urn:oid:2.49.0.1.840.0.b9c985293b8be40bebeb13bc22b3687d |
Physical priority index · v1. 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: 2026-07-21T03:10:00.000Z.
First archived: 2026-07-21T08:54:33.706Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Storm Surge Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Baldwin Coastal; Mobile Coastal; Lower St. Bernard and 6 more areas |
| Headline | Storm Surge Watch issued July 20 at 10:10PM CDT by NWS Mobile AL |
| Expires | 2026-07-21T06:15:00-05:00 |
| SenderName | NWS Mobile AL |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b9c985293b8be40bebeb13bc22b3687da2c2696b.001.1","noaa_urn:oid:2.49.0.1.840.0.b9c985293b8be40bebeb13bc22b3687da2c2696b.002.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.011.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.020.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.022.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.008.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.013.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.021.1","noaa_urn:oid:2.49.0.1.840.0.f3c8aee78d9440af01d98891627337954e7e411c.019.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
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.
Review the area, threshold and delivery channel in your account.
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