Flash Flood Warning for Galveston and Harris Counties, TX
This alert is no longer in effect.
NOAA issued it on July 26, 2026, 4 weeks ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Houston/Galveston TX has issued a Flash Flood Warning for northern Galveston County and Harris County until 2:45 PM CDT on June 20, 2026.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Galveston and Harris Counties, TX
- Issued
- July 26, 2026
- Issuing authority
- NWS Houston/Galveston TX
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 weeks ago; use the issuing agency's live warning service for current conditions in Galveston and Harris Counties, TX.
Alert Details
Flash Flood Warning issued by NWS Houston/Galveston TX. Effective from 12:43 PM CDT June 20, 2026 until 2:45 PM CDT June 20, 2026. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Northern Galveston County in southeastern Texas and Harris County in southeastern Texas. Specific locations that will experience flash flooding include Southeastern Pasadena, northeastern League City, La Porte, Seabrook, Kemah, eastern Clear Lake, Nassau Bay, Taylor Lake Village, El Lago, Shoreacres, Clear Lake Shores, Morgan's Point and The Johnson Space Center.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Expected Conditions
At 12:43 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. Hazard: Flash flooding caused by thunderstorms. Source: Radar and automated gauges. Impact: Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
Timeline
The warning is effective from 12:43 PM CDT until 2:45 PM CDT on June 20, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,367 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 26, 2026.
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