What’s happening near you?

Use My Location or enter a city or ZIP above.

FloodNational Weather Service

Flood Advisory — Grimes + 3 more areasFlood Advisory — Grimes + 3 more areas

Completed official-source record with preserved facts and meaningful-change history. The final record does not infer impacts the source did not report.

StatusCompleted
Affected area / locationGrimes; Harris; Montgomery
Record roleIncident record
Last meaningful change3 weeks ago
Last source check3 weeks ago
Official sourceNational Weather Service
FINAL RECORD

What the preserved official data shows

Automated factual summary

This Flood Advisory left the National Weather Service active-alert feed after being preserved by Texas Hazard Watch. The official record named Grimes; Harris; Montgomery; Waller. Completion confirms the alert is no longer in the active feed; it does not by itself establish damage or other impacts.

First collected
Oct 2, 2026 · 1:26 AM CDT
Record completed
Oct 2, 2026 · 4:30 AM CDT
Monitored duration
3 hours, 3 minutes
Official severity
Minor
Named areas
Grimes; Harris; Montgomery; Waller
Official expiration
Oct 2, 2026 · 4:30 AM CDT
Final monitor status
Left the active NWS alert feed
EXACT LOCATION & OFFICIAL GIS

Show the Official Affected Area

Official NWS warning polygon

The map distinguishes an official point, official warning/perimeter geometry, and optional satellite thermal detections. Aerial imagery is a basemap and may be older than the incident.

Official source pointOfficial warning/zone area
Loading official geometry…

Record facts

Event
Flood Advisory
Affected Texas areas
Grimes; Harris; Montgomery; Waller
Effective
2026-10-02T01:25:00-05:00
Expires
2026-10-02T04:30:00-05:00
Issuing authority
NWS Houston/Galveston TX
LATEST MEANINGFUL CHANGE

Completed

Official record ended or left the source’s active window.

Instructions preserved with the record

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

This record is completed. Check current official sources before acting.

Latest official-source information

* WHAT...Urban area and small stream flooding caused by excessive
rainfall is expected.

* WHERE...Southeastern Grimes County in southeastern Texas...
Harris County in southeastern Texas...
Southwestern Montgomery County in southeastern Texas...
Northeastern Waller County in southeastern Texas...

* WHEN...Until 430 AM CDT.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
River or stream flows are elevated.

* ADDITIONAL DETAILS...
- At 125 AM CDT, Doppler radar and automated rain gauges indicated
heavy rain due to thunderstorms. This will cause urban and small
stream flooding. Between 6 and 8 inches of rain have fallen.
- Additional rainfall amounts of 0.5 to 1 inch are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Pinehurst, Hockley, Waller, Magnolia, Stagecoach, Todd Mission,
Plantersville and Dobbin.
- http://www.weather.gov/safety/flood

RECORDED TIMELINE

Meaningful official changes

2 meaningful changes

The complete source history remains preserved. Routine monitoring snapshots and small gauge fluctuations are condensed here for readability.

  1. Record completedOfficial record ended or left the source’s active window.
  2. First recordedNew official record added to the monitor.

Original source

This record is derived from an official public source. Texas Hazard Watch preserves and organizes it but does not replace the issuing authority.

Open official source ↗