ACTIVE: A Flash Flood Warning is in effect for the Cedar Rapids and eastern Iowa area, issued by the National Weather Service Quad Cities IA/IL at 3:08 AM CDT, expiring 8:00 AM CDT.
Between 1 and 2 inches have already fallen with 1 to 3 more inches possible — a multi-county setup across Benton, Cedar, Iowa, Johnson, Jones, and Linn counties, running right through Cedar Rapids on I-380.
This is a live snapshot as of 3:18 AM CDT. Conditions change fast — always verify with the National Weather Service for your specific county or ZIP code.
Benton, Cedar, Iowa, Johnson, Jones & Linn Counties, Iowa — Flash Flood Warning
Issuing office: NWS Quad Cities IA/IL
Issued: 3:08 AM CDT
Expires: 8:00 AM CDT
Hazard: Flash flooding caused by thunderstorms.
Source: Radar indicated.
Locations expected to experience flash flooding include: Cedar Rapids, Marion, Hiawatha, Robins, Anamosa, Vinton, Marengo, Mount Vernon, Lisbon, Solon, Ely, Fairfax, Walford, Mechanicsville, Stanwood, Palo, Belle Plaine, Center Point, Springville, Atkins.
Expected impacts: Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Between 1 and 2 inches of rain have fallen, with additional rainfall of 1 to 3 inches possible. This includes Interstate 380 between mile markers 8 and 36 — expect flooded stretches on the main north-south corridor through the warned area.
Sources: NWS alert | NWS Quad Cities IA/IL office page
Stay Safe Tonight
Turn around, don’t drown. Most flood deaths occur in vehicles — never drive through flooded roadways, and be especially cautious at night when it is harder to recognize the dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads. Remain alert for flooding even in locations not receiving rain — arroyos, streams, and rivers can become raging killer currents in a matter of minutes, even from distant rainfall.
If water enters your home: stay out of standing water where electricity may be present, avoid the basement until water recedes and power is confirmed off, and photograph everything before cleanup — that documentation matters for insurance. Then call a local restoration contractor: water left sitting starts a second wave of damage within a day.
Report what you see: the NWS asks residents to report observed flooding to local emergency services or law enforcement and request they pass it to the National Weather Service — but only when it can be done safely.
What This Means for Restoration Teams
A warning like this one is the contractor’s early warning system for the next several days of inbound work. Six counties and the Cedar Rapids metro in one polygon — this is the scale of warning that generates a multi-day call queue: basements along the Cedar River corridor, saturated commercial ground floors, and low-lying subdivisions in Hiawatha and Robins.
- Basement and crawlspace flooding across the Cedar Rapids/Marion/Hiawatha metro — the classic Category 1–2 residential jobs that start the moment water recedes.
- Stormwater backup in low-lying urban streets and underpasses — sewage cross-contamination risk where combined systems are overwhelmed.
- Saturated drywall, carpet, and insulation with mold risk within 24–48 hours — crews that start drying same-day get the job, not the callback.
- I-380 corridor flooding (mile markers 8–36) — commercial and fleet clients along the interstate should be on the call list.
The play: pre-position drying assets across the metro now, keep an on-call rotation through the 8:00 AM expiry and into the morning commute, and capture address + water source + affected areas on the first call — with 3 more inches possible, crews should expect the call volume to build through sunrise.
Field discipline holds: photo-document before mitigation, moisture-map every affected room, and keep the homeowner’s payment responsibility clear in writing before work starts.
FEMA & Federal Assistance
If flooding damages your home and you need federal help, the FEMA Helpline is 1-800-621-3362 (7 a.m. to 10 p.m. local time, 7 days a week). You can also apply at DisasterAssistance.gov, through the FEMA app, or by finding a recovery center at fema.gov/drc.
Basic eligibility: U.S. citizenship or qualified immigration status, identity verification, proof of occupancy or ownership, and unmet needs not covered by insurance. Apply as soon as it’s safe to do so — you do not have to wait for an official disaster declaration to start the process.
Looking Ahead
This warning runs until 8:00 AM CDT, and with up to 3 additional inches possible, watch for reissues or extensions from NWS Quad Cities through the morning. Small creeks and streams can crest after the rain stops, and urban underpasses stay flooded into the commute window.
Water-intrusion calls typically start within hours of water receding and keep coming for days as people discover damage — saturated drywall, buckling floors, and musty odors that show up after the water is gone.
Sources & How to Verify
- NWS Flash Flood Warning alert (read September 20, 2026)
- NWS Quad Cities IA/IL office page (read September 20, 2026)
- weather.gov — enter your county or ZIP for the current warning picture
To verify for your own county or ZIP: go to weather.gov and enter your ZIP code, or check the issuing NWS office page for the latest updates and any reissues.
This post is for informational purposes and is not an official weather warning. Always follow instructions from local authorities and the National Weather Service.





