FEMA Records
14
Low volume
Michigan · FEMA + NOAA + National Risk Index
Shiawassee County, MI
14 FEMA disaster declarations (1965-2020), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.
- 14
- FEMA declarations
- 9
- Major disasters
- 62
- NRI risk · Relatively Low
- Flood
- Top hazard
The verdict
Two federal records point in the busier direction for Shiawassee County. Its 14 FEMA declarations are 40% above the Michigan county mean and exceed the count for 20% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 38%, based on modeled expected annual loss, social vulnerability, and community resilience.
- Riskiest 38%
- of U.S. counties for FEMA National Risk Index score
- Relatively Low
- FEMA National Risk Index rating
- 14
- FEMA declarations vs 21 national county avg
- 62
- NFIP flood insurance claims filed
FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Major Disaster (DR) and Emergency (EM) records; an EM authorizes a narrower set of federal assistance than a DR.
How does Shiawassee County compare?
Shiawassee County vs. all counties in this dataset
FEMA disaster declarations, all-time
14 20th percentile higher than 20% of 3,266 counties
Each bar is a band; taller bars hold more counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source FEMA Disaster Declarations Summaries v2 · 2026-08-03
Shiawassee County's FEMA Risk Index score
FEMA National Risk Index composite score vs. the Michigan county average
Which hazard drives modeled loss here?
FEMA's modeled annual dollar loss for Shiawassee County is led by Riverine Flooding (about $7.5M Expected Annual Loss, Historical Loss Ratio Relatively Low), while Strong Wind carries the highest National Risk Index rating (Relatively High). EAL and risk score use different inputs; they need not agree.
Source: FEMA National Risk Index (December 2025 release) - Expected Annual Loss vs composite risk rating by hazard.
What does Shiawassee County's hazard record show?
Reading the federal records together
The NFIP claims register shows a middle-volume loss record here: 62 paid claims, totaling $106.3K. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $1.7K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.
The declaration register points in the busier direction. Shiawassee County's 14 federal records stand 40% above the Michigan county mean of 10.0. That comparison describes how often federal action was recorded, including any Major Disaster, Emergency, and Fire Management entries shown on this page; it does not convert the count into future probability.
FEMA National Risk Index
This county carries a high composite score on FEMA's National Risk Index, 62.2/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $22.1M in annualized losses), and a Relatively Moderate social-vulnerability profile combined with Very High community resilience shapes how much of that raw exposure becomes realized harm. Of the 18 hazards FEMA models, Strong Wind stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 5.7 times per year here, based on 216 historical events on record.
Declaration frequency
The FEMA register is busy by both local and national comparisons. It contains 14 entries for Shiawassee County, including 9 Major Disaster records, 40% above the Michigan county mean. Across the 55-year span, that works out to 0.3 declarations a year. Flood leads the file with 4 entries. Declaration type records the federal action taken, not every assistance program approved.
59 /100
Historical Activity Index
High historical activity
Shiawassee County, MI · PlainHazard-derived composite from federal records
This 0–100 index is an explicit PlainHazard composite from FEMA declaration history only on the county surface (this DB has no county-level NOAA damage row) . It is not FEMA's National Risk Index, not a forecast, and not a safety, insurance, or preparedness rating. Open the calculator · Methodology
FEMA Declarations (1953–present) Moderate
10/30
14 OpenFEMA declarations, full ingest window (0.7x national county average)
County Disaster Density High
18/25
14 declarations (1.4x state county average of 10)
Major Disaster Share High
16/25
9 of 14 declarations are major disasters (64%)
Hazard Diversity Very High
15/20
6 different disaster types declared in Shiawassee County
Historical Declaration Activity
Activity Band
High
vs. Michigan Avg
+40%
State avg: 10.0
vs. National Avg
-32%
National avg: 20.7
Avg Per Year
0.3
Over 55 years
FEMA NRI 8-hazard radar - Shiawassee County
How to read this radar
Each axis: NRI risk rating (Very Low-Very High) on a 0-100 scale. Rounder = broad exposure; spiky = one or two hazards dominate.
Major Disaster share
64%
Major-heavy
NRI risk score
62
Relatively Low
Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release
How often does each hazard strike Shiawassee County?
FEMA's National Risk Index models a historical event count and an annualized frequency for each hazard type. Most hazards are expressed as modeled occurrences per year; FEMA expresses drought and heat-wave frequency as event-days per year. These modeled frequencies are not forecasts.
| Hazard | NRI Risk Rating | Recurrence |
|---|---|---|
| Strong Wind | Relatively High | an average of 5.7 times per year |
| Tornado | Relatively Moderate | roughly once every 4 years |
| Cold Wave | Relatively Moderate | an average of 2.8 times per year |
| Ice Storm | Relatively Moderate | an average of 1.5 times per year |
| Hail | Relatively Low | an average of 2.9 times per year |
| Heat Wave | Relatively Low | 2.5 modeled event-days per year |
| Riverine Flooding | Relatively Low | roughly once every 2 years |
| Landslide | Very Low | roughly once every 12 years |
| Hurricane | Very Low | roughly once every 43 years |
| Earthquake | Very Low | roughly once every 1,425 years |
| Lightning | Relatively Low | an average of 34 times per year |
| Winter Weather | Very Low | an average of 11 times per year |
| Wildfire | Very Low | roughly once every 66,178 years |
Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release
Disaster Types
Flood 4
Severe Storm 3
Snowstorm 3
Biological 2
Hurricane 1
Tornado 1
What Flood declarations mean here
Flood is the most frequent declaration type on Shiawassee County's record, 29% of its declarations. Federal flood declarations cover two mechanisms that behave very differently: riverine flooding, which builds over days as a watershed drains and is usually forecast well in advance, and flash flooding, which can arrive in under an hour from rainfall that fell somewhere upstream.
Flood is also the one hazard class where a second federal dataset exists for the same events. The National Flood Insurance Program records what was actually paid on insured losses, so it measures a narrower thing than the declaration count: uninsured damage, and flooding outside mapped special flood hazard areas, never enters it. Reading the two together is more informative than either alone.
Declaration counts describe past federal action. They are a record of what was declared, not a forecast of future hazard probability.
Declaration Types
What DR / EM / FM mean
FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).
Major Disaster - 9 64.3%
of all 14 declarations
Emergency - 5 35.7%
of all 14 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2020 | 2 | |
| 2005 | 1 | |
| 2004 | 1 | |
| 2001 | 1 | |
| 1998 | 1 | |
| 1986 | 1 | |
| 1985 | 1 | |
| 1978 | 1 | |
| 1977 | 1 | |
| 1976 | 1 | |
| 1975 | 2 | |
| 1965 | 1 | |
Disaster Declarations
How the 14 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.
Download these 14 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 4494 | COVID-19 PANDEMIC | DR | Biological | 2020-03-27 |
| 3455 | COVID-19 | EM | Biological | 2020-03-13 |
| 3225 | HURRICANE KATRINA EVACUATION | EM | Hurricane | 2005-09-07 |
| 1527 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2004-06-30 |
| 3160 | SNOW | EM | Snowstorm | 2001-01-10 |
| 1226 | SEVERE STORMS | DR | Severe Storm | 1998-06-24 |
| 774 | SEVERE STORMS & FLOODING | DR | Flood | 1986-09-18 |
| 744 | SEVERE STORMS AND FLOODING | DR | Flood | 1985-09-18 |
| 3057 | BLIZZARDS & SNOWSTORMS | EM | Snowstorm | 1978-01-27 |
| 3030 | SNOWSTORMS | EM | Snowstorm | 1977-02-05 |
| 495 | SEVERE STORMS, TORNADOES, ICING & FLOODING | DR | Severe Storm | 1976-03-19 |
| 486 | SEVERE STORMS, HIGH WINDS & FLOODING | DR | Flood | 1975-09-30 |
| 465 | SEVERE STORMS, HIGH WINDS & FLOODING | DR | Flood | 1975-04-26 |
| 190 | TORNADOES & SEVERE STORMS | DR | Tornado | 1965-04-14 |
Storm Events in Michigan
Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Shiawassee County.
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| Thunderstorm Wind | 3,010 | 10 | 18 | $173.8M |
| Winter Storm | 1,486 | 3 | 11 | $41.8M |
| Winter Weather | 1,254 | 21 | 38 | $892.0K |
| Hail | 962 | 0 | 0 | $77.1M |
| High Wind | 389 | 3 | 2 | $668.9M |
Source: NOAA Storm Events Database State-level aggregated data, 2015-2025
NFIP Flood Insurance Claims
Total Claims
62
Total Paid
$106.3K
Avg Per Claim
$1.7K
Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data
FEMA National Risk Index
Overall Risk
Relatively Low
Score: 62.2/100
Expected Annual Loss
Relatively Low
$22.1M/year
Social Vulnerability
Relatively Moderate
Community Resilience
Very High
Hazard Risk Breakdown
Strong Wind Relatively High
Tornado Relatively Moderate
Cold Wave Relatively Moderate
Ice Storm Relatively Moderate
Hail Relatively Low
Heat Wave Relatively Low
Riverine Flooding Relatively Low
Landslide Very Low
Hurricane Very Low
Earthquake Very Low
Lightning Relatively Low
Winter Weather Very Low
Wildfire Very Low
Drought No Rating
Source: FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri
The model's sharpest exposure here: Strong Wind
Strong Wind covers damaging non-thunderstorm, non-tornadic wind, the kind produced by steep pressure gradients and downslope events. It is a broad, frequent, low-drama hazard: roofs, signage, power lines and high-profile vehicles, spread across a wide area rather than concentrated on a path.
Worth noting for Shiawassee County: the model and the federal record do NOT point at the same hazard. Strong Wind carries the highest modeled rating (Relatively High), while the county's declaration history is led by Flood. That is not a contradiction, the two measure genuinely different things. Declarations record federal ACTION, which requires damage costly enough to exceed state and local capacity; the Risk Index models EXPECTED annual loss across all 18 hazards whether or not any declaration ever followed. A hazard can be the county's largest modeled exposure and never once have driven a declaration.
National Risk Index ratings are modeled estimates of expected annual loss, not predictions of what will happen in any given year.
Data-matched county comparisons
Shiawassee County's closest FEMA peer: Whitley County, KY
Comparisons use published FEMA declaration fields plus the National Risk Index composite for Shiawassee County. Record similarity, not a safety rating.
Similar modeled NRI score
Shiawassee County: NRI composite 62.2 (Relatively Low).
Similar Major-disaster share
Shiawassee County: 9 of 14 of its declarations are Major.
Closest declaration profiles
Shiawassee County shows 14 FEMA declarations, led by Flood.
How these peers are chosen
Cohort: Published U.S. county equivalents outside the source state or territory. Each metric keeps six ETL candidates; three unique destinations are shown after de-duplicating across axes. Declaration-volume ranking combines count and Major-disaster share and prefers a different leading incident type; Major-share ranks the Major fraction adjusted for volume; NRI ranks the modeled composite score only.
Retained FEMA snapshot feed for Shiawassee County - capture-dated entries only.
Further reading for this county
Understanding disaster data
Shiawassee County's NFIP claims file (62 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.
More PlainHazard guides
- Most disaster-prone counties - U.S. counties ranked by FEMA declaration totals.
- Understanding disaster data - declarations vs storm events vs NRI scores.
- Preparing for natural disasters - household checklist (not county-specific advice).
Related
Frequently Asked Questions
What is the most common disaster type in Shiawassee County?
The most common disaster type in Shiawassee County is Flood, with 4 declarations. Other disaster types include Severe Storm (3), Snowstorm (3), Biological (2).
How does Shiawassee County's FEMA declaration record compare with the Michigan average?
FEMA lists 14 declaration records for Shiawassee County. That is 40% above the Michigan county mean of 10.0. Its count is also 32% below the national county mean of 20.7. A larger declaration history records more federal actions; it is not a forecast of the county's next hazard.
How many major FEMA disaster declarations has Shiawassee County received?
Shiawassee County has received 9 major disaster declarations, representing 64% of all 14 disaster declarations.
How many flood insurance claims has Shiawassee County filed?
Shiawassee County has 62 National Flood Insurance Program (NFIP) claims totaling $106.3K in payments, with an average of $1.7K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Shiawassee County?
No. In Shiawassee County, Strong Wind has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $7.5M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Shiawassee County?
The most active year for disaster declarations in Shiawassee County was 1975, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2020.
What is the FEMA National Risk Index score for Shiawassee County?
According to the FEMA National Risk Index, Shiawassee County, Michigan has an overall risk score of 62.2 out of 100 (Relatively Low). The county's social vulnerability rating is Relatively Moderate and community resilience is Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $22.1M in annualized losses.
Which natural hazard poses the greatest risk to Shiawassee County?
Based on FEMA NRI data, the highest-risk natural hazard in Shiawassee County is Strong Wind (risk rating: Relatively High). Other significant hazards include Tornado (Relatively Moderate) and Cold Wave (Relatively Moderate). FEMA's modeled event frequency puts strong wind here at an average of 5.7 times per year, drawn from 216 historical events on record. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
Data Sources & Methodology
Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.
Storm event data is sourced from the NOAA Storm Events Database (2015-2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.
Flood insurance data comes from the FEMA National Flood Insurance Program (NFIP) OpenFEMA claims dataset.
This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.
What this means for Shiawassee County
Shiawassee County, MI has 14 federal declaration records, 40% more than the Michigan county mean of 10; its history sits in PlainHazard's high activity band.
- Within this above-state-average declaration file, major disaster leads with 9 of 14 records; the category describes past federal action, not the next likely hazard. Michigan overview
- The state benchmark and national rank point the same way: this count tops the Michigan mean and the totals for 20% of 3,266 U.S. counties. Most-disaster rankings
- Use the data guide to separate this mid-volume insurance-claims file from declaration counts and modeled NRI risk. Disaster-data guide
An above-average declaration count records past federal responses; it does not predict the next event. Current warnings come from the National Weather Service and local emergency officials.
PlainHazard derives this profile from FEMA's Disaster Declarations Summaries and National Risk Index data. The declaration comparison covers 3,266 U.S. counties and county equivalents in this database, refreshed as of 2026-08-03. Read our methodology - how this data is sourced, computed, and verified.
All federal data sources used on this page
- FEMA OpenFEMA, Disaster Declarations Summaries v2 - all federally-declared disasters for this county. fema.gov/openfema/disaster-declarations
- FEMA National Risk Index (NRI) - per-county per-hazard risk ratings and expected annual loss. hazards.fema.gov/nri
- NOAA NCEI Storm Events Database - state-level storm/severe-weather event records, 2015-2025. ncdc.noaa.gov/stormevents
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial
Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →
Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.