Niobrara County, Wyoming: hazard history

FEMA declared 5 disasters that named Niobrara County between 1978 and 2020.

Most recent declarations

• EM-3479 2020 · Biological · Covid-19
• DR-4535 2020 · Biological · Covid-19 Pandemic
• DR-4227 2015 · Flood · Severe Storms And Flooding
• DR-1268 1998 · Severe Ice Storm · Wy - Winter Storm 10/5/98
• DR-557 1978 · Flood · Severe Storms, Flooding & Mudslides

Not counted above: 3 statewide declarations, which covered every county in Wyoming. A declaration is a decision to send federal help, not a measure of how bad an event was. Records run from 1953. Source: FEMA OpenFEMA Disaster Declarations Summaries.

Records start in 1996. Damage is NOAA's estimate at the time, in nominal dollars, and is often rounded; it is not insurance claims data. A storm that crossed two NOAA zones in this county is recorded, and counted, once per zone.

NOAA storm event records in Niobrara County each year. The busiest year was 2019, with 39 records.

Years with no record are left out of the table, not shown as zero.

Costliest records

1. Flash Flood · Jun 4, 2015$1.5M
   NOAA name: NIOBRARA · NOAA record 589431
2. Blizzard · Oct 4, 1998$200K
   NOAA name: NIOBRARA · NOAA record 5672872
3. Winter Storm · Apr 19, 2000$175K
   NOAA name: NIOBRARA · NOAA record 5138135
4. Flash Flood · Aug 6, 2006$40K
   NOAA name: NIOBRARA · NOAA record 5525963
5. Hail · Aug 28, 1996$10K
   NOAA name: NIOBRARA · NOAA record 5556429

Each line is one NOAA record, linked to its page at NOAA. One large storm can appear more than once if NOAA recorded it in several zones of this county. Dollars are nominal.

The National Flood Insurance Program paid $570 on 1 claims in Niobrara County from 2000 to 2000.

A count of claims, not a rate: NFIP publishes no count of insured homes beside it, and most flood damage is uninsured. Nominal dollars. Records run from 1978 to 2024; claims filed without a county code are not on any county page. Source: FEMA OpenFEMA FIMA NFIP Redacted Claims.

A hazard vulnerability analysis rates each hazard for probability, impact, preparedness and response. Probability is the one column the county’s federal record can fill — NCEI storm events from 1996 to 2026 and FEMA declarations naming the county — and this is what it says for a facility here, on the 0–3 scale of the all-hazards structure surveyors expect. The other six columns are the facility’s own judgment about its building, and Calchis leaves them blank.

A dash means the record does not speak to that hazard; it is not a zero. Whether a finished document satisfies the CMS Emergency Preparedness Rule is the facility’s finding and its surveyor’s. Complete the HVA for a facility in Niobrara County — the technological, human and hazardous-materials rows, the six facility columns, the approval and the printed document — or read the sample analysis on that page first.

• Every figure is counted from public federal records held by Calchis: NOAA NCEI Storm Events, FEMA OpenFEMA Disaster Declarations, and FEMA NFIP claims. Nothing is modeled or estimated.
• NOAA files some events by county and others by forecast zone, and names both. Records are counted as Niobrara County when their NOAA name is this county's name, alone or with a word like “Coastal” or “Inland” in front. The county codes NOAA also publishes have not been loaded for Wyoming yet; when they are, this page will count by code instead, and some counties' records will grow. NOAA names counted here: NIOBRARA, NIOBRARA COUNTY. Zones named for something else, such as a mountain range or two counties at once, are left out: 51% of Wyoming's NOAA records.
• Counts last rebuilt from the source records on Sep 15, 2026.