County Hazards

Storm events on record through

Chester County, South Carolina Storm events, disaster declarations and flood insurance claims on record

This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search (opens in a new tab).

NCEI has 433 storm events on record for Chester County, South Carolina, from 1950 through 30 Jun 2026.

The newest event on record is a thunderstorm wind event on 28 Jun 2026.

FEMA has 23 disaster declarations on record for the county from 1964 through 1 Oct 2026. The newest is EM-3632 of 23 Jan 2026.

OpenFEMA has 8 NFIP claims on record for the county from 1978 through 8 Sep 2026. The NFIP paid $89 thousand on these claims.

The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.

The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.

Zone (NWS Forecast Zone): A zone is a geographic area defined by the NWS for issuing forecasts, watches, and warnings. While zones often align with counties, they can also represent smaller or subdivided areas within a county to account for differences in weather conditions, such as elevation or proximity to water. Larger-scale events—such as heat, cold, drought, and winter storms—are typically recorded by zone.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .

This is raw, unedited data from FEMA's National Emergency Management Information System (NEMIS) and as such is subject to a small percentage of human error.

The words of the agency. Source: FEMA, OpenFEMA Dataset "Disaster Declarations Summaries - v2", copied on . The page gives: last data refresh 2026-10-01.

It is derived from the National Flood Insurance Program system of record, staged in the program's reporting platform and redacted to protect policy holder personally identifiable information.

The words of the agency. Source: FEMA, OpenFEMA Dataset "NFIP Redacted Claims - v3", copied on . The page gives: last data refresh 2026-09-09.

Dates of the data: NCEI storm events through . OpenFEMA disaster declarations through . NFIP claims through .

Since the last update: no change is on record for Chester County. The site compares the agency data at each update. Updates of the data

The five hazards

Storm events on record for Chester County by hazard and period (NCEI, through 30 Jun 2026)
Hazard1950 to 20262000 to 20092010 to 20192020 to 2026Newest event
Hail9438205
Tornado19314
Flood13821
Wind205685729
Winter4620155
Other event types56Heat, cold, drought, wildfire, lightning, fog, tropical and other types
All storm events43316910349

A hazard name opens the page of that hazard for the county. A hazard has a page from 10 events. The year 2026 has the events through 30 Jun 2026 only.

Forecast zones with the name of the county give 109 of the 433 events. A county count has the events that NCEI gives to the county. It also has the events of a forecast zone that has the name of the county. A zone with another name counts for the state only.

Rates of Chester County beside the total of the counties of South Carolina and of the United States
MeasureChesterAll counties of South CarolinaAll counties of the United States
Storm events for each 100 square miles, 1950 to 202674.6103.049.3
Storm events for each 10,000 residents, 1950 to 2026134.459.652.5
NFIP claims for each 1,000 policies in force, 2016 to 2025no figure128.3185.3

The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. The site gives a rate for each 10,000 residents only from 10,000 residents. Residents and area: Census Bureau, 2021.

Newest storm events on record

Thunderstorm Wind58 mph (50 knots, estimated gust)

3 miles E of LANDO

Thunderstorm Wind63 mph (55 knots, estimated gust)

1 mile WSW of AIRLEE

Drought

On record for the forecast zone

Drought

On record for the forecast zone

Thunderstorm Wind58 mph (50 knots, estimated gust)

2 miles NNE of BLACKSTOCK

Cold/Wind Chill

On record for the forecast zone

Heavy Snow

On record for the forecast zone

Winter Storm

On record for the forecast zone

Hail0.75 in, penny size

1 mile SE of RICHBURG

Thunderstorm Wind63 mph (55 knots, estimated gust)

1 mile NNE of FT LAWN. Damage estimate: $100 thousand

Thunderstorm Wind58 mph (50 knots, estimated gust)

1 mile SE of RICHBURG

Thunderstorm Wind58 mph (50 knots, estimated gust)

1 mile W of CHESTER

Winter Storm

On record for the forecast zone

Tropical Storm

On record for the forecast zone. Damage estimate: $500 thousand

Strong Wind46 mph (40 knots, estimated gust)

On record for the forecast zone. Damage estimate: $10 thousand

Thunderstorm Wind58 mph (50 knots, estimated gust)

At WILKSBURG

Thunderstorm Wind75 mph (65 knots, estimated gust)

1 mile WNW of LANDO. Damage estimate: $25 thousand

Hail1.25 in, half dollar size

1 mile N of RICHBURG

Hail1.75 in, golf ball size

At LOWRYS

Thunderstorm Wind63 mph (55 knots, estimated gust)

2 miles WNW of LEEDS

Thunderstorm Wind58 mph (50 knots, estimated gust)

5 miles SW of WILKSBURG

TornadoEF0

1 mile S of LEEDS

Thunderstorm Wind58 mph (50 knots, estimated gust)

1 mile W of CHESTER

Thunderstorm Wind58 mph (50 knots, estimated gust)

4 miles WNW of WILKSBURG

Thunderstorm Wind58 mph (50 knots, estimated gust)

1 mile E of CORNWELL

The 25 events above are the newest in the NCEI record. A place is the text of the NCEI record: a distance and a direction from a reference place. Wind speed is in miles per hour, with the knots that NCEI gives. The site does not show a place text that names a private property or reads as a person. Download these events (CSV)

Storm events on record for Chester County by year, 1950 to 2026
DecadeYear that ends in 0Year that ends in 1Year that ends in 2Year that ends in 3Year that ends in 4Year that ends in 5Year that ends in 6Year that ends in 7Year that ends in 8Year that ends in 9All
1950s00000111003
1960s00010110003
1970s11011300007
1980s022132214522
1990s41211012147151177
2000s2817111514713212617169
2010s20211587391073103
2020s11395858 (part of the year)49

A darker cell has a larger count. The number is in each cell.

NCEI recorded tornado events from 1950, and hail and thunderstorm wind events from 1955. It recorded all event types from 1996. A count before 1996 has fewer event types.

FEMA disaster declarations

FEMA has 23 disaster declarations on record for Chester County from 1964 through 1 Oct 2026. The newest is EM-3632: SEVERE WINTER STORM.

Disaster declarations that name Chester County (OpenFEMA, through 1 Oct 2026)
DeclaredNumberTypeIncident typeTitle in the FEMA recordAssistance
EM-3632EmergencyWinter StormSEVERE WINTER STORMPublic
DR-4829Major disasterHurricaneHURRICANE HELENEIndividual, Public
EM-3619EmergencyTropical StormHURRICANE HELENEPublic
EM-3606EmergencyTropical StormHURRICANE DEBBYPublic
EM-3597EmergencyHurricaneHURRICANE IDALIAPublic
DR-4677Major disasterHurricaneHURRICANE IANPublic
EM-3585EmergencyHurricaneHURRICANE IANPublic
DR-4492Major disasterBiologicalCOVID-19 PANDEMICIndividual, Public
DR-4479Major disasterSevere StormSEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODINGPublic
EM-3470EmergencyBiologicalCOVID-19Public
EM-3421EmergencyHurricaneHURRICANE DORIANPublic
EM-3400EmergencyHurricaneHURRICANE FLORENCEPublic
DR-4346Major disasterHurricaneHURRICANE IRMAPublic
EM-3386EmergencyHurricaneHURRICANE IRMAPublic
EM-3378EmergencyHurricaneHURRICANE MATTHEWPublic
EM-3373EmergencySevere StormSEVERE STORMS AND FLOODINGPublic
EM-3369EmergencySevere Ice StormSEVERE WINTER STORMPublic
EM-3233EmergencyHurricaneHURRICANE KATRINA EVACUATIONPublic
DR-1566Major disasterHurricaneTROPICAL STORM FRANCESIndividual
DR-1509Major disasterSevere Ice StormSEVERE ICE STORMPublic
DR-1313Major disasterSevere StormSEVERE WINTER STORMPublic
DR-843Major disasterHurricaneHURRICANE HUGOIndividual, Public
EM-3047EmergencyDroughtDROUGHTPublic

DR is a major disaster declaration. EM is an emergency declaration. FM is a fire management assistance declaration. A declaration for the whole state is on the South Carolina page. What a disaster declaration is

The dataset includes declared recovery programs and geographic areas (county not available before 1964; Fire Management records are considered partial due to historical nature of the dataset).

The words of the agency. Source: FEMA, OpenFEMA Dataset "Disaster Declarations Summaries - v2", copied on . The page gives: last data refresh 2026-10-01.

Flood insurance claims (NFIP)

OpenFEMA has 8 NFIP claims on record for Chester County from 1978 through 8 Sep 2026.

The NFIP paid $88,553 on 6 claims.

FEMA counts 20 residential policies in force on 3 Aug 2026. The site gives a rate for each 1,000 policies only from 100 policies, because one claim changes a smaller rate too much.

NFIP claims in Chester County by year of loss, 1978 to 2026
DecadeYear that ends in 0Year that ends in 1Year that ends in 2Year that ends in 3Year that ends in 4Year that ends in 5Year that ends in 6Year that ends in 7Year that ends in 8Year that ends in 9All
1970s000
1980s00000000011
1990s00000001001
2000s00000100001
2010s00020100003
2020s0000110 (part of the year)2

A darker cell has a larger count. The number is in each cell.

NFIP claims by year of loss with the amount paid: 7 years
NFIP claims in Chester County by year of loss, with the amount paid (OpenFEMA, through 8 Sep 2026)
Year of lossClaimsClaims with a paymentAmount paid
20251not shownnot shown
20241not shownnot shown
20151not shownnot shown
20132not shownnot shown
20051not shownnot shown
19971not shownnot shown
19891not shownnot shown

A year with fewer than 5 claims shows the count of claims and no amount. A year with 1 to 4 claims with a payment shows no amount either. Such an amount could point to one property. The amount is the sum of the building, contents and increased cost of compliance payments. How FEMA redacts NFIP claims

This dataset is not intended to be an official federal report, and should not be considered an official federal report.

Note, the County Code field may not reflect the individual county the property is located as projects can be associated with more than one county

The words of the agency. Source: FEMA, OpenFEMA Dataset "NFIP Redacted Claims - v3", copied on . The page gives: last data refresh 2026-09-09.

FEMA cannot verify the quality and/or timeliness of any data or any analysis derived therefrom after the data has been retrieved from FEMA.gov.

The words of the agency. Source: FEMA, OpenFEMA Terms and Conditions, copied on . The page gives: last updated 2025-01-22.

National Risk Index

Risk Index rating
Relatively Low
Risk Index score
43.2 of 100
Expected Annual Loss rating
Very Low
Expected Annual Loss
$11 million
Social Vulnerability rating
Relatively High
Community Resilience rating
Relatively Moderate
National Risk Index of Chester County by hazard type (FEMA, December 2025 release)
Hazard typeRisk Index ratingExpected Annual Loss
Cold waveRelatively Moderate$1,473,059
DroughtRelatively Low$56,863
EarthquakeRelatively Low$689,595
HailVery Low$93,949
Heat waveRelatively Low$194,115
HurricaneRelatively Low$248,672
Ice stormRelatively High$393,699
Inland floodingRelatively Low$4,080,923
LandslideVery Low$579
LightningRelatively Moderate$498,407
Strong windRelatively Moderate$653,124
TornadoRelatively Moderate$2,414,796
WildfireVery Low$28,160
Winter weatherVery Low$14,936

The National Risk Index dataset leverages available source data for natural hazard and community risk factors to develop a baseline relative risk measurement for each United States county and Census tract.

The rating is a qualitative categorization that describes the community in comparison to all other communities at the same level, ranging from “Very Low” to “Very High.”

The National Risk Index data are meant for planning purposes only.

The words of the agency. Source: FEMA, National Risk Index Data: Frequently Asked Questions (December 2025, v1.20), copied on .

The labels and the ratings are those of FEMA. Expected Annual Loss is a figure for a whole county. It is not a figure for a property. How to read the National Risk Index

Tropical storm and hurricane tracks

The HURDAT2 record of the National Hurricane Center has 49 tracks within 100 miles of the centre point of the county, through the 2025 season. 0 of them were within 50 miles at hurricane strength.

Storm names, years and distances: 40 tracks
Tropical storm and hurricane tracks within 100 miles of the centre point of Chester County (NHC HURDAT2)
Storm nameYearNearest point of the trackHighest wind within 100 miles
Debby202449 miles46 mph
Elsa202151 miles46 mph
Florence201878 miles52 mph
Michael201851 miles52 mph
Andrea201399 miles46 mph
Alberto200638 miles40 mph
Hugo198989 miles98 mph
Bob198538 miles52 mph
David197935 miles63 mph
Unnamed Atlantic storm197690 miles40 mph
Alma197072 miles46 mph
Unnamed Atlantic storm196587 miles40 mph
Cindy195991 miles40 mph
Gracie195911 miles75 mph
Able195237 miles52 mph
Unnamed Atlantic storm195297 miles46 mph
Unnamed Atlantic storm194959 miles58 mph
Unnamed Atlantic storm194793 miles46 mph
Unnamed Atlantic storm194648 miles46 mph
Unnamed Atlantic storm194575 miles58 mph
Unnamed Atlantic storm194478 miles58 mph
Unnamed Atlantic storm193566 miles52 mph
Unnamed Atlantic storm192982 miles58 mph
Unnamed Atlantic storm192730 miles46 mph
Unnamed Atlantic storm191637 miles63 mph
Unnamed Atlantic storm191550 miles40 mph
Unnamed Atlantic storm191366 miles40 mph
Unnamed Atlantic storm191216 miles40 mph
Unnamed Atlantic storm190770 miles40 mph
Unnamed Atlantic storm190633 miles46 mph
Unnamed Atlantic storm190495 miles69 mph
Unnamed Atlantic storm190254 miles40 mph
Unnamed Atlantic storm190294 miles40 mph
Unnamed Atlantic storm190195 miles40 mph
Unnamed Atlantic storm190192 miles40 mph
Unnamed Atlantic storm189355 miles86 mph
Unnamed Atlantic storm189360 miles46 mph
Unnamed Atlantic storm188937 miles52 mph
Unnamed Atlantic storm188863 miles40 mph
Unnamed Atlantic storm188636 miles46 mph

A name is the storm name that the National Hurricane Center gave. The distance is from the centre line of the track. It does not show how far the wind, the rain or the surge of a storm went.

ZIP Codes, cities and towns of Chester County

A city or town has no page of its own. This page is the record for the whole county, which has these places:

  • Chester
  • Eureka Mill
  • Fort Lawn
  • Gayle Mill
  • Great Falls
  • Lowrys
  • Richburg

Official channels

These links open the pages of the agencies. The site checked the links on .

Cite this page

County Hazards. "Chester County, South Carolina: storm events, disaster declarations and flood insurance claims on record". https://countyhazards.com/county/sc/chester/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026; FEMA OpenFEMA disaster declarations through 1 Oct 2026; FEMA OpenFEMA NFIP claims through 8 Sep 2026. Page made on .

Where the data comes from

  • Storm events: NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026.
  • Disaster declarations: OpenFEMA Disaster Declarations Summaries, read on 1 Oct 2026.
  • NFIP claims: OpenFEMA NFIP Claims, as of 8 Sep 2026. Multiple-loss properties: 2 Aug 2026. Policies in force: 3 Aug 2026.
  • National Risk Index: FEMA, December 2025 release. Storm tracks: NHC HURDAT2 through the 2025 season.
  • Residents, area, places and adjacent counties: US Census Bureau, 2021 vintage.

How the counts are made · Corrections · Hazards in all states: hail, tornado, flood, wind, winter

Questions

How many tornado events are on record for Chester County?
NCEI has 19 tornado events on record for Chester County from 1950 through 30 Jun 2026. 1 event has a rating of EF2 or F2, or a higher rating.
How large is the hail on record for Chester County?
NCEI has 94 hail events on record from 1955 through 30 Jun 2026. 16 events have a hail size of 1.75 inches or more. NCEI names 1.75 inches a golf ball.
Which month has the most storm events on record for Chester County?
June has 81 of the 433 storm events on record from 1950 through 30 Jun 2026.
How many NFIP claims are there for each 1,000 policies in force in Chester County?
FEMA counts 20 residential policies in force on 3 Aug 2026. The site gives a rate for each 1,000 policies only from 100 policies, because one claim changes a smaller rate too much.