Flood risk snapshot · Marietta, OH

More for Ohio: Highest flood risk cities · Ohio live outlook

Current risk outlook

Flooding and heavy rain risk for Marietta, OH.

Live conditions updated just now. Refreshes every 5–40 minutes.

This view focuses on street flooding, ponding in low-lying areas, and how heavy rain tends to behave around this city.

Live risk outlook

MODERATE

Moderate

Next 6–24 hours: Today: Moderate (43/100) · Rain 53% · 0.6 in · Max wind 9 mph.

2 active alerts nearby.

Sources: NOAA, NWS, SPC, NHC, FEMA, USGS.

Historical risk score

Long-term baseline derived from historical hazard activity.

12

/ 100

Flood risk score12/100

For typical homes located in Marietta, OH.

Baseline context

FEMA NFHL flood zones: 1 features intersect this tile.

Local historical hazard map

Marietta, OH

Historical baseline tiles

Click a tile to update scores. These layers show long-term historical baseline risk, not live warnings or short-term forecast risk.

Live flood alerts & official forecast (NWS)

Forecast office: RLX · radar KRLX

Active alerts near Marietta

Severe Thunderstorm Warning

Effective local time

Severe Thunderstorm Warning issued August 10 at 12:12PM EDT until August 10 at 12:45PM EDT by NWS Charleston WV

For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.

Special Weather Statement

Effective local time

Special Weather Statement issued August 10 at 12:03PM EDT by NWS Charleston WV

If outdoors, consider seeking shelter inside a building. Torrential rainfall is also occurring with these storms and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with these storms. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle.

Flood intelligence snapshot

FEMA flood zones (NFHL)

Dominant zone: X (58% of features)

SFHA share: 42% (feature-weighted)

NFHL features in tile: 62

Tile risk label: Moderate

Source: FEMA NFHL (MapServer).

Nearest river gauge (USGS)

No nearby USGS gauges reporting right now.

Source: USGS NWIS (instant values).

Soil saturation (model)

Soil moisture: 32% volumetric

Last 24h rain: 0.00 in

Updated: local time

Source: Open-Meteo soil model (proxy).

5-day flood & rain outlook

Today

MODERATE

Rain chance: 53% · 0.6 in

Max wind: 9 mph

Risk score: 43/100

Tomorrow

ELEVATED

Rain chance: 75% · 1.5 in

Max wind: 2 to 8 mph

Risk score: 60/100

Wed

MODERATE

Rain chance: 64% · 0.5 in

Max wind: 3 to 7 mph

Risk score: 48/100

Thu

LOW

Rain chance: 53%

Max wind: 2 to 7 mph

Risk score: 31/100

Fri

LOW

Rain chance: 48%

Max wind: 2 to 6 mph

Risk score: 29/100

Outlook blends NWS forecast, WPC QPF totals, and Excessive Rainfall Outlook categories.

Historical flooding exposure

Local flood data facts

NFHL features in this tile62
Dominant FEMA zoneX (58%)
SFHA share of features42%
Soil moisture (topsoil)32% · 0.00 in rain

Data from FEMA NFHL, USGS gauges, and Open-Meteo soil moisture.

Historical flooding exposure in Marietta

  • Lowest-lying streets and drainage chokepoints tend to flood first during heavy rain.
  • Long-duration rainfall can raise ponding risk even without a named storm.
  • Local elevation and canal/river networks can amplify or reduce flood impacts.

Flood & storm risk FAQs for Marietta

Does Marietta flood often?

Flooding risk depends on elevation, drainage, and rainfall intensity. This model summarizes localized flood patterns from public datasets.

What causes street flooding without a storm surge?

Short bursts of heavy rain can overwhelm drains; longer events can saturate soils and keep water standing even after rain ends.