This alert expired on 20 June 2026 at 16:30 UTC. It is kept here as a record.
No stronger detection stands among the 5 recorded within 20 km of this point since 20 June 2026 — one other scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Flash Flood Warning issued June 20 at 9:24AM CDT until June 20 at 11:30AM CDT by NWS Houston/Galveston TX
An estimated 18,288 people live within 50 km of this point.
How we know
Confirmed by 16 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 91% |
| Coordinates | 31.3643, -95.5105 |
| Nearest City | Palestine (45 km) |
| Population Exposed | 18.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-20T14:24:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2e8681f8dc6021ba3e2a6bce51e1b08c9a90b97a.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Houston, TX |
| Headline | Flash Flood Warning issued June 20 at 9:24AM CDT until June 20 at 11:30AM CDT by NWS Houston/Galveston TX |
| Expires | 2026-06-20T11:30:00-05:00 |
| SenderName | NWS Houston/Galveston TX |
| HasExactCoords | true |
| Iem TypeSummary | F |
| Iem City | 2 SE Crockett |
| Iem County | Houston |
| Iem State | TX |
| Iem Wfo | HGX |
| Iem Remark | A member of the public reported on social media that flooding was ongoing along US 287 south of the Loop 304 outside of Crockett. |
| MergedSources | [{"id":"iem_R_31.570_-95.670_1781949600000","source":"iem","severity":"low","severityValue":25,"timestamp":1781949600000,"latitude":31.57,"longitude":-95.67},{"id":"iem_R_31.460_-96.100_1781955900000","source":"iem","severity":"low","severityValue":25,"timestamp":1781955900000,"latitude":31.46,"longitude":-96.1},{"id":"iem_R_31.420_-95.870_1781956500000","source":"iem","severity":"low","severityValue":25,"timestamp":1781956500000,"latitude":31.42,"longitude":-95.87},{"id":"iem_F_31.500_-95.480_1781955000000","source":"iem","severity":"low","severityValue":25,"timestamp":1781955000000,"latitude":31.5,"longitude":-95.48},{"id":"iem_R_31.610_-95.540_1781949600000","source":"iem","severity":"low","severityValue":25,"timestamp":1781949600000,"latitude":31.61,"longitude":-95.54},{"id":"iem_F_31.490_-96.260_1781947560000","source":"iem","severity":"low","severityValue":25,"timestamp":1781947560000,"latitude":31.49,"longitude":-96.26},{"id":"iem_F_31.490_-96.080_1781956320000","source":"iem","severity":"low","severityValue":25,"timestamp":1781956320000,"latitude":31.49,"longitude":-96.08},{"id":"iem_F_31.480_-96.080_1781959140000","source":"iem","severity":"low","severityValue":25,"timestamp":1781959140000,"latitude":31.48,"longitude":-96.08},{"id":"iem_F_31.490_-96.060_1781956320000","source":"iem","severity":"low","severityValue":25,"timestamp":1781956320000,"latitude":31.49,"longitude":-96.06},{"id":"iem_F_31.460_-96.060_1781947980000","source":"iem","severity":"low","severityValue":25,"timestamp":1781947980000,"latitude":31.46,"longitude":-96.06},{"id":"iem_F_31.320_-95.440_1781958000000","source":"iem","severity":"low","severityValue":25,"timestamp":1781958000000,"latitude":31.32,"longitude":-95.44},{"id":"iem_R_31.500_-95.890_1781955900000","source":"iem","severity":"low","severityValue":25,"timestamp":1781955900000,"latitude":31.5,"longitude":-95.89},{"id":"iem_R_31.500_-95.890_1781949600000","source":"iem","severity":"low","severityValue":25,"timestamp":1781949600000,"latitude":31.5,"longitude":-95.89},{"id":"iem_F_31.460_-96.060_1781952120000","source":"iem","severity":"low","severityValue":25,"timestamp":1781952120000,"latitude":31.46,"longitude":-96.06},{"id":"iem_F_31.300_-95.440_1781957400000","source":"iem","severity":"low","severityValue":25,"timestamp":1781957400000,"latitude":31.3,"longitude":-95.44}] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.