FEMA flood zones · Virginia

Martinsville city, Virginia Flood Zone Map

4 federal flood & hurricane disasters

4% of Martinsville city’s area is in FEMA’s high-risk flood zones, and another 1% in shaded X (mostly the 0.2% floodplain and areas behind levees).

Share of the whole county outline, rivers and lakes included; parts FEMA hasn’t mapped count as zero.

Coastal high risk (V, VE)FloodwayHigh risk (A, AE)Moderate (X, 500-year)Minimal (X)Undetermined (D)

Shaded areas are FEMA’s mapped flood hazard zones in and around Martinsville city, Virginia. Zoomed out they are simplified; at street level the map switches to FEMA’s exact layer. Tap anywhere to check that spot, or search an address above.

How Martinsville city floods

Flash flooding driven by severe summer thunderstorms dominates the flood risk in the City of Martinsville, accounting for the majority of recorded events alongside general floods and tropical storms over the past thirty years.

Recent occurrences illustrate these weather patterns. A significant flood event occurred on January 9, 2024, driven by a strong southerly wind flow ahead of an upper-level trough that carried deep moisture northward from the Gulf of Mexico. Later that year, on September 24, 2024, an intense thunderstorm passed across the city amid a highly moist airmass produced by stationary and warm fronts, resulting in flash flooding. Additional flash flooding occurred on June 19, 2023, driven by a stacked low over the Ohio Valley that pulled a warm front through the region, and on August 21, 2020, when high tropical moisture combined with light mean winds to produce slow-moving, highly efficient rainfall.

Homeowners, real estate agents, and journalists should pay the closest attention to properties vulnerable to intense convective storms and sudden, localized heavy rainfall.

Summary written from NOAA storm reports and NFIP claims for this county. Not a prediction.

In their words

11 NOAA storm reports from Martinsville city describe what happened, in the words of the forecasters who covered it. Read the Virginia flood stories →

Federal disasters

13 federal disaster declarations since 1972, 4 of them floods, coastal storms or hurricanes.

DisasterBegan
Severe Winter StormJan 22, 2026
Tropical Storm MichaelOct 9, 2018
Hurricane FlorenceSep 13, 2018
Hurricane SandyOct 26, 2012
Severe Storms And Straight-line WindsJun 29, 2012
Hurricane Katrina EvacuationAug 29, 2005
Hurricane Fran And Associated Severe Storm CondSep 5, 1996
Blizzard Of 96 (severe Snow Storm)Jan 6, 1996

Weather and water disasters only; most recent first. Source: OpenFEMA Disaster Declarations.

Recorded flood events

24 since 1996: 17 flash floods and 5 river or area floods.

EventDateDamage
Flash FloodSep 24, 2024$10,000
FloodJan 9, 2024—
Flash FloodJun 19, 2023—
Tropical StormOct 29, 2020$25,000
Flash FloodAug 21, 2020—
Flash FloodSep 22, 2018—
Flash FloodMay 18, 2018—
Flash FloodMay 18, 2018$800,000

— = no damage estimate in the record. Source: NOAA Storm Events Database.

From the storm reports

Flash Flood · Sep 24, 2024. A warm front was situated across central Virginia and North Carolina, while a stationary front was positioned across Kentucky and West Virginia, which kept a highly moist airmass over the region. Lift across the warm front and increasing instability via diurnal heating through the day resulted in an increase in coverage and intensity of storms. Some of the storms were severe producing damaging winds and large hail…

Flood · Jan 9, 2024. A deep, negatively tilted upper level trough and associated occluded front passed from the central Mississippi River Valley on January 9th toward the lower New England region by the morning of the 10th. Strong southerly wind flow ahead of the upper trough carried deep moisture from the Gulf of Mexico northward into the Carolinas and the lower Mid-Atlantic. Precipitable water values ranged from 1.1 inches across…

Flash Flood · Jun 19, 2023. A stacked low over the Ohio Valley pulled a warm front through the Southside Region of Virginia in the afternoon. The upper level support from upper level disturbances rotating around the low allowed storms to develop and grow in intensity as surface-based CAPE (Convective Available Potential Energy) values increased into the 1,000 to 1,500 J/Kg range. There were scattered areas of wind damage from thunderstorm wi…

Tropical Storm · Oct 29, 2020. Winds associated with Tropical Storm Zeta caused damage and power outages in southwestern Virginia, concentrated close to border with North Carolina. Wind gusts reached 30-40 knots during the peak of the storm. Numerous trees were blown down by Tropical Storm Zeta, with many falling on homes, power lines, and blocking roadways. A thunderstorm closely following Zeta contributed to some of the wind damage.

National Weather Service narratives, lightly trimmed. Source: NOAA Storm Events Database.

The zones you’ll see on the map

Every colour on the map above is a place on this drawing: where the ground sits relative to the flood FEMA plans for.

Cross-section of a river floodplainDiagram: a river valley. The floodway is the channel and the land beside it; the 1%-annual-chance flood surface (the base flood elevation) covers the valley floor as zone A or AE; a narrow band higher up is shaded X, the 0.2% floodplain; higher ground is X.0.2% CHANCE A YEAR (500-YEAR)BASE FLOOD ELEVATION · 1% A YEARXAEFloodwayAEX
  1. A / AE Inside the 1%-a-year floodplain: about a 26% chance of flooding over a 30-year mortgage. AE has a mapped base flood elevation; plain A does not.
  2. Floodway The channel and the land beside it that has to be kept clear enough to carry the flood. Building here is tightly limited.
  3. X shaded The 0.2% (500-year) floodplain, plus some levee-protected and very shallow flood areas.
  4. X Outside both lines. No federal requirement to insure, which is not the same as no risk.

Every flood zone code explained →

Flood insurance in Martinsville city

If a building in Martinsville city is in a high-risk zone (A or V) and its mortgage comes from a federally regulated or insured lender, or is federally backed, flood insurance is required.

Outside those zones it is optional, and often worth having: from 2014 to 2024 nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area. Since Risk Rating 2.0, NFIP premiums are set for each building, so the only reliable price is a quote: FloodSmart.gov or a local agent.