Flash Flood Warning: Durant–Bryan County Area Until 8:45 PM CDT

The National Weather Service in Norman has issued a Flash Flood Warning for southwestern Bryan County, Oklahoma — including Durant, Colbert, Achille, Silo, Mead, Hendrix, Cartwright, Calera, and eastern Lake Texoma — until 8:45 PM CDT this evening. At 7:18 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area, with between 2 and 3.5 inches of rain already fallen. Flash flooding is ongoing or expected to begin shortly. No additional rainfall is expected, but flooding impacts will continue. The NWS expects flash flooding of small creeks and streams, urban areas, highways, streets and underpasses, and other poor-drainage and low-lying areas — this is the scenario that puts water in structures.

This is a live snapshot as of about 7:30 PM CDT. Conditions change fast — always verify with the National Weather Service for your specific county or ZIP code.

Durant and Bryan County — Flash Flood Warning

Issued by: National Weather Service Norman, OK
Issued: 7:18 PM CDT Sunday, September 20, 2026
Expires: 8:45 PM CDT Sunday, September 20, 2026

Warned area: Southwestern Bryan County in southeastern Oklahoma.

Hazard detail, verbatim from the alert:

• Hazard: Flash flooding caused by thunderstorms
• Rainfall: Between 2 and 3.5 inches have fallen
• Source: Radar indicated
• Status: Flash flooding is ongoing or expected to begin shortly

Expected impacts from the NWS: Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses, as well as other poor-drainage and low-lying areas.

Locations that will experience flash flooding: Durant, Colbert, Achille, Silo, Mead, Hendrix, Cartwright, eastern Lake Texoma, and Calera.

Source: NWS Norman (alert AWIPS identifier FFSOUN).

Stay safe tonight

• Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
• Never drive through flooded roadways — six inches of moving water can knock you down, and twelve inches can carry a car. Underpasses and low-water crossings in and around Durant and along the Lake Texoma shoreline fill first.
• If water enters the home: stay out of standing water where electricity may be present, avoid the basement until water recedes and power is confirmed off.
• Photograph everything before cleanup — waterlines on walls, damaged flooring, affected belongings. Documentation matters for insurance, and adjusters settle faster with timestamped photos.
• Then call a local restoration contractor — water left sitting starts a second wave of damage within a day.

What this means for restoration teams

Between 2 and 3.5 inches of rain have fallen in southwestern Bryan County, and flash flooding is ongoing or expected to begin shortly, per the NWS. Here’s the contractor read for Bryan County tonight.

Damage categories to expect:

• Interior water intrusion: Ground-level flooding through doorways, garage slabs, and foundation seepage — especially in low-lying neighborhoods near creeks and the Lake Texoma shoreline. Saturated carpet, pad, and the bottom 12–24 inches of drywall.
• Saturated drywall and insulation: Floodwater wicks upward. Anything the water touched — plus the capillary zone above it — has to come out. Insulation behind wet drywall is a total loss.
• Mold risk within 24–48 hours: September warmth plus standing water is a mold clock. Drying equipment can’t wait long — the sooner it’s on-site, the better.
• Sewage and gray-water backup: Heavy rain overwhelms low-lying sewer laterals — treat any backup as contaminated and handle it under Category 3 protocols.
• Crawlspaces and slab edges: The slow-burn calls. Homeowners discover these days later when the musty smell arrives.

The play tonight:

• Stage extraction and drying equipment now — pre-position dehumidifiers and air movers for Monday-morning deployment. Keep an on-call rotation through the morning.
• Capture address, water source (rising creek, street runoff, sewer backup), water depth, and affected areas on the first call — it determines the category of water and the scope.
• Field discipline: photo-document before mitigation, moisture-map every affected room (including rooms the homeowner thinks are dry), and keep the homeowner’s payment responsibility clear in writing before work starts.
• Triage rule: standing water and sewage backups first, wet-but-drying second, “it smells funny” third.

Timing note: Discovery of water damage often trails the storm by hours to days — be ready for inspection requests in the coming days.

FEMA & federal assistance

FEMA Helpline: 1-800-621-3362 (7 a.m.–10 p.m. local, 7 days a week). You can also apply at DisasterAssistance.gov, through the FEMA app, or find a recovery center at fema.gov/drc.

Basic eligibility: U.S. citizenship or qualified status, identity verification, proof of occupancy or ownership, and unmet needs not covered by insurance. Apply as soon as it’s safe.

Looking ahead

The warning runs until 8:45 PM CDT. No additional rainfall is expected, but flooding impacts will continue as creeks and low-lying areas drain — water in streets and underpasses can linger well past expiry. Watch overnight for water receding unevenly: some areas drain in an hour, low pockets near Lake Texoma and creek bottoms can hold water much longer.

The next NWS update lands at or before 8:45 PM CDT if the threat continues. Restoration teams should be ready for extraction and inspection requests as water recedes unevenly overnight.

Sources & how to verify

• NWS Norman alert (FFSOUN) — weather.gov/oun
• National Weather Service — weather.gov

To verify for your own county or ZIP: enter your ZIP at weather.gov or check the NWS Norman office page directly.

This post is for informational purposes and is not an official weather warning. Always follow instructions from local authorities and the National Weather Service.