NOAA - Severe weather warnings tornadoes - Storm based accuracy (%)
performance.commerce.gov | Last Updated 28 Mar 2024Tornado Warnings are issued to enable the public to get out of harm’s way and mitigate preventable loss. NWS forecasters issue approximately 2,900 Tornado Warnings per year, primarily between the Rockies and Appalachian Mountains. Tornado Warning statistics are based on a comparison of warnings issued and weather spotter observations of tornadoes and/or storm damage surveys from Weather Forecast Offices in the United States. Accuracy or probability of detection (POD) is the percentage of time a tornado actually occurred in an area that was covered by a tornado warning. The difference between the accuracy percentage figure and 100% represents the percentage of events occurring without warning. Most tornadoes cannot be visually tracked from beginning to end and post-storm damage surveying is the official method with which the NWS categorizes tornado characteristics (intensity, path length & width) but must rely on radar data to estimate the timing of the tornado track.
This dataset has the following 6 columns:
Column Name | API Column Name | Data Type | Sample Values |
---|---|---|---|
Performance Indicator | performance_indicator | text | Severe weather warnings tornadoes - Storm based accuracy (%) view top 100 |
Fiscal Year | fiscal_year | calendar_date | 2014-09-30T00:00:00.000 2017-09-30T00:00:00.000 2016-09-30T00:00:00.000 2019-09-30T00:00:00.000 2008-09-30T00:00:00.000 view top 100 |
Actual | actual | number | 0.6100 0.6300 0.5800 0.5700 0.6400 view top 100 |
Target | target | number | 0.7200 0.700 0.6700 0.6900 0.7600 view top 100 |
Proximity | proximity | number | 0.847222 0.805556 0.791667 1.02632 1.07143 view top 100 |
Status | status | text | Not Met Exceeded Met view top 100 |