Right now
The most recent data we hold from NOAA arrived 21 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 24 May 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 31 recorded within 20 km of this point since 1 May 2026 — 17 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flood Warning issued May 23 at 6:06PM CDT until May 23 at 7:15PM CDT by NWS Houston/Galveston TX
Urban PEI: 3,536,689 within a heuristic 50 km radius; not unique people.
Nearby, since 1 May 2026
- August 28, 2026 · score 52 · 2.0 km
- May 23, 2026 · score 52 · 7.1 km
- August 28, 2026 · score 52 · 10.7 km
How we know
5 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 52 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) | 52 / 100 |
| Legacy data-support index | 0.89/1 |
| Coordinates | 29.4876, -95.3472 |
| Nearest City | Pearland (10 km) |
| Urban exposure index (PEI) | 3.5M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-23T23:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Flood Warning_noaa_urn:oid:2.49.0.1.840.0.28c015c94d00ce53127fa8eb93ca5ada |
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: 2026-05-23T23:06:00.000Z.
First archived: 2026-05-23T23:41:46.086Z. 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 | Flood Warning |
| Urgency | Expected |
| Certainty | Likely |
| AreaDesc | Brazoria, TX; Fort Bend, TX; Harris, TX; Waller, TX; Brazoria, TX; Galveston, TX |
| Headline | Flood Warning issued May 23 at 6:06PM CDT until May 23 at 7:15PM CDT by NWS Houston/Galveston TX |
| Expires | 2026-05-23T19:15:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.28c015c94d00ce53127fa8eb93ca5ada15142607.001.1","noaa_urn:oid:2.49.0.1.840.0.b1abfa5ea7f648834774b1ffd0e40730b294a2ca.001.1","noaa_urn:oid:2.49.0.1.840.0.f9ae279b81853834c97923e6141adb36f66505ce.001.1"] |
| Iem TypeSummary | F |
| Iem City | Hillcrest |
| Iem County | Brazoria |
| Iem State | TX |
| Iem Wfo | HGX |
| Iem Remark | Estimated 4 inches of water in Hillcrest, TX. |
| Google News RssFeed | weather |
| Google News SourceName | KHOU |
| MergedSources | [{"id":"iem_M_29.360_-94.720_1779561000000","source":"iem","severity":"low","severityValue":25,"timestamp":1779561000000,"latitude":29.36,"longitude":-94.72},{"id":"iem_F_29.690_-95.520_1779571980000","source":"iem","severity":"low","severityValue":25,"timestamp":1779571980000,"latitude":29.69,"longitude":-95.52},{"id":"iem_F_29.390_-95.220_1779562200000","source":"iem","severity":"low","severityValue":25,"timestamp":1779562200000,"latitude":29.39,"longitude":-95.22},{"id":"gnews_weather_494324_145","source":"google_news","severity":"medium","severityValue":40,"timestamp":1779569940000,"latitude":29.76,"longitude":-95.36}] |
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.
Review the area, threshold and delivery channel in your account.
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