Skip to contentCALCHIS
Severe WeatherNE

Nebraska Severe Weather Hazard Profile

Hazard Data · Model Version 2.5

Overview

Nebraska sits within Tornado Alley and the US hail corridor, with NOAA SPC data showing high frequency of significant tornadoes and large hail events. The state's agricultural exposure amplifies crop hail losses. Severe thunderstorm winds (derechos) are an additional hazard, particularly across the eastern Nebraska plains.

In the Historical Record

48
federal disaster declarations (1975–2025)
FEMA OpenFEMA Disaster Declarations
20,856
Hail events recorded
NOAA NCEI Storm Events, 1996–present

Counted from the records this platform holds. A figure is shown only where the underlying dataset could be read.

County by County in Nebraska

What federal records show has happened in each county: storms, disaster declarations and flood insurance claims. The counties below have the longest NOAA storm records in Nebraska.

All Nebraska counties

Notable Historical Events

12024 Lincoln-Omaha tornado outbreak — multiple significant tornadoes in metro areas
22004 Hallam EF4 — one of the widest tornadoes measured at the time
32014 Pilger twin EF4 tornadoes — simultaneous EF4 tornadoes, extremely rare event

Hazard Scoring Approach

Calchis computes a Calchis Hazard Score (0–10) for severe weather hazard at any US address. The score is composed of weighted sub-components derived from federal data sources and published research. All score components are transparent and returned in API responses.

These are hazard scores — physical intensity likelihood only. They do not include property exposure or vulnerability data. We never call a hazard score a risk score. See the full methodology for scoring details.

Analyze Your Address

Enter any Nebraska address to see location-specific severe weather hazard scoring with full methodology transparency.

Open Live Map — Nebraska

Data Sources

NOAA Storm Prediction Centerwww.spc.noaa.gov
NOAA Storm Events Databasewww.ncdc.noaa.gov
Nebraska Emergency Management Agencynema.nebraska.gov

Related

Monitoring severe weather exposure in Nebraska?

This page is a state-level profile. Calchis scores individual addresses, tracks live severe weather events against your own locations, and alerts you when one approaches them.

Free includes Live map + 3 triggers + 10 bond positions. Analyst is $149/mo for 1,000-location portfolios, ep curves, predictions, parametric triggers.

Calchis Hazard Score — derived from federal and academic sources listed above. Property exposure data not included. Not a substitute for professional actuarial assessment. Decision-support intelligence — not a primary alerting or dispatch system. Verify against official sources.