Flood risk snapshot · Alexandria, VA

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Current risk outlook

Flooding and heavy rain risk for Alexandria, VA.

Live sources checked 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

LOW

Low

Next 6–24 hours: Today: Low (30/100) · Rain 49% · 0.0 in · Max wind 12 mph.

1 active alert nearby.

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

Local decision support

Next 24–72 hours: risk-to-action packet

Live inputs checked just now

Baseline

12/100

Low long-term exposure

Live signal

Low

Current source-derived signal

Official alerts

1

active local alert

Practical, non-emergency steps

  1. STEP 1

    Reduce water entry points

    Clear gutters, drains, and low-area grates when it is safe to do so, and move valuables from low storage areas.

  2. STEP 2

    Document before conditions change

    Keep current photos of the exterior and important records in an accessible place for a later coverage conversation.

  3. STEP 3

    Follow local flood direction

    Do not use this packet for route, evacuation, or floodwater decisions; follow official local and NWS alerts instead.

This packet supports preparation conversations. It is not an emergency alert, evacuation instruction, insurance quote, property inspection, or medical guidance. Follow official local instructions for time-sensitive decisions.

Historical risk score

Long-term baseline derived from historical hazard activity.

12

/ 100

Flood risk score12/100

For typical homes located in Alexandria, VA.

Baseline context

FEMA NFHL flood zones: 5 features intersect this tile.

Local historical hazard map

Alexandria, VA

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: LWX · radar KLWX

Active alerts near Alexandria

Coastal Flood Advisory

Effective local time

Coastal Flood Advisory issued September 26 at 2:50PM EDT until September 28 at 11:00AM EDT by NWS Baltimore MD/Washington DC

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.

Flood intelligence snapshot

FEMA flood zones (NFHL)

Dominant zone: X (80% of features)

SFHA share: 19% (feature-weighted)

NFHL features in tile: 454

Tile risk label: Low

Source: FEMA NFHL (MapServer).

Nearest river gauge (USGS)

CAMERON RUN AT ALEXANDRIA, VA (01653000)

Stage: 4.46 ft

Discharge: 192 ft3/s

Observed: local time

Distance from Alexandria: 1 mi

Source: USGS NWIS (instant values).

Soil saturation (model)

Soil moisture: 23% volumetric

Last 24h rain: 0.09 in

Updated: local time

Source: Open-Meteo soil model (proxy).

5-day flood & rain outlook

Today

LOW

Rain chance: 49% · 0.0 in

Max wind: 12 mph

Risk score: 30/100

Tomorrow

LOW

Rain chance: 43% · 0.0 in

Max wind: 10 to 18 mph

Risk score: 27/100

Mon

LOW

Rain chance: 2% · 0.0 in

Max wind: 7 to 13 mph

Risk score: 11/100

Tue

LOW

Rain chance: 1%

Max wind: 3 to 9 mph

Risk score: 10/100

Wed

LOW

Rain chance: 0%

Max wind: 0 to 6 mph

Risk score: 10/100

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

Historical flooding exposure

Local flood data facts

NFHL features in this tile454
Dominant FEMA zoneX (80%)
SFHA share of features19%
Nearest USGS gauge1 mi · 4.46 ft

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

Historical flooding exposure in Alexandria

  • 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 Alexandria

Does Alexandria 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.