National Overview — Wednesday, September 17, 2025
A coastal storm is impacting the Mid-Atlantic with widespread rain, gusty onshore winds, shallow coastal flooding, rip currents, and large surf. Thunderstorms with heavy rain continue across parts of the Plains. Outside these wetter zones, much of the country runs warmer than average. Drivers should expect periods of reduced visibility, ponding on roads, and slick bridge decks where rain is active.
Mid-Atlantic Coast — Eastern NC into Southeast VA and the Southern Delmarva
What to expect:
- Periods of heavy rain with localized flash flooding and shallow coastal flooding.
- Gusty onshore winds, rough surf, and rip currents along the coast.
- WPC highlights a Slight Risk for excessive rainfall over the VA Tidewater, with a Marginal Risk nudged into far northeast NC.
Main corridors and impacts:
- I-64 (Hampton Roads–Richmond): Slowdowns in heavy rain; watch for ponding and slick bridge decks.
- I-95 (Petersburg–Richmond corridor): Periods of reduced visibility and standing water in low spots.
- US-13/Chesapeake Bay Bridge–Tunnel: Crosswinds and spray; coastal flooding possible on approaches.
- US-17/Outer Banks connectors: Water over shoulders and brief lane restrictions possible where tidal flooding develops.
Driver notes: Reduce speed in downpours, allow extra stopping distance, and use caution on exposed bridges and causeways. Monitor local NWS statements and state DOT updates for short-fuse flood advisories or closures.
Central High Plains — Southern Nebraska into Far NW Kansas; Storms into Eastern CO/WY
What to expect:
- Repeated thunderstorms with heavy downpours and localized flash flooding.
- A few severe storms possible with hail and damaging winds.
- WPC flags a Slight Risk for excessive rainfall over southern NE into far NW KS, with a broader storm threat across the Central Plains.
Main corridors and impacts:
- I-80 (Nebraska): Rapid reductions in visibility and water pooling; brief detours possible around flooded low spots.
- I-76 (NE/CO): Thunderstorm rounds could lead to quick hydroplaning risk.
- I-70 (KS/CO): Strong wind gusts near storms; watch for sudden heavy rain and hail.
Driver notes: Slow down in heavy rain, avoid flooded underpasses, and be prepared for rapidly changing conditions near stronger storms.
Desert Southwest into Southern New Mexico/Southeast Arizona (Showers also reaching Southern California)
What to expect:
- Scattered storms producing brief torrential rain with rapid runoff in washes; localized flash flooding possible.
- WPC maintains a Marginal Risk for excessive rainfall over southeast AZ into southern NM; tropical moisture will help spark showers into Southern California.
Main corridors and impacts:
- I-10 (Tucson–Las Cruces/El Paso): Quick water rises at low crossings; sudden visibility drops under heavy cells.
- I-19 (Nogales–Tucson): Wash crossings may flood briefly; expect sporadic delays.
- I-8 (Yuma corridor): Isolated downpours; pockets of water on the roadway.
Driver notes: Never drive through flooded washes. Expect brief, intense rainfall and adjust speed accordingly.
Safety Tip of the Day
In any heavy rain, increase following distance, avoid cruise control, and keep a steady, reduced speed—especially on bridges, ramps, and low-lying stretches prone to ponding. Check local NWS alerts and state DOT feeds before departure and build extra time into routes crossing today’s highlighted corridors.
Sources: National Weather Service, Weather Prediction Center, local NWS offices, and state Departments of Transportation.
This weather briefing was prepared exclusively for truckstopinsider.com.
