Storm Data is provided by the National Weather Service (NWS) and contain statistics on personal injuries and damage estimates. Storm Data covers the United States of America. The data began as early as 1950 through to the present, updated monthly with up to a 120 day delay possible. NCDC Storm Event database allows users to find various types of storms recorded by county, or use other selection criteria as desired. The data contain a chronological listing, by state, of hurricanes, tornadoes, thunderstorms, hail, floods, drought conditions, lightning, high winds, snow, temperature extremes and other weather phenomena.

The Storm Events Database is an integrated database of severe weather events across the United States from 1950 to this year, with information about a storm event's location, azimuth, distance, impact, and severity, including the cost of damages to property and crops. It contains data documenting: The occurrence of storms and other significant weather phenomena having sufficient intensity to cause loss of life, injuries, significant property damage, and/or disruption to commerce Rare, unusual, weather phenomena that generate media attention, such as snow flurries in South Florida or the San Diego coastal area Other significant meteorological events, such as record maximum or minimum temperatures or precipitation that occur in connection with another event. Data about a specific event is added to the dataset within 120 days to allow time for damage assessments and other analysis. For preliminary data about storms within the last 120 days, see the preliminary storm reports dataset from the Storm Prediction Center. You can find more detailed information about the dataset, including the list of the 40 possible storm event types, by looking at the documentation published by the National Weather Service. Though every effort is made to ensure the dataset is as complete as possible, some storm events are missing. Use of the data should cite NOAA and NESDIS/NCEI as the dataset creator and the Severe Weather Data Inventory as the dataset. This public dataset is hosted in Google BigQuery and is included in BigQuery's 1TB/mo of free tier processing. This means that each user receives 1TB of free BigQuery processing every month, which can be used to run queries on this public dataset.

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Other Collections. The data include parameters of database with a geographic _location of . The time period coverage is from Unavailable begin date to Unavailable end date in calendar years before present (BP). See metadata information for parameter and study _location details. Please cite this study when using the data.

The Severe Weather Data Inventory (SWDI) is an integrated database of severe weather records for the United States. SWDI enables a user to search through a variety of source data sets in the NCDC (now NCEI) archive in order to find records covering a particular time period and geographic region, and then to download the results of the search in a variety of formats. The formats currently supported are Shapefile (for GIS), KMZ (for Google Earth), CSV (comma-separated), and XML. The current data layers in SWDI are: Storm Cells from NEXRAD (Level-III Storm Structure Product); Hail Signatures from NEXRAD (Level-III Hail Product); Mesocyclone Signatures from NEXRAD (Level-III Meso Product); Digital Mesocyclone Detection Algorithm from NEXRAD (Level-III MDA Product); Tornado Signature from NEXRAD (Level-III TVS Product); Preliminary Local Storm Reports from the NOAA National Weather Service; Lightning Strikes from Vaisala NLDN.

When severe weather occurs in the United States, there are networks of humans and sensors that observe and report the events and their details to the National Weather Service. These storm reports are aggregated and archived by NOAA's National Centers for Environmental Information. With over 1.7 million records over 70 years, the Storm Events Database is the most comprehensive, official record of severe weather in the U.S. This layer is a simplified version of the full database, providing information on:DateLocationEvent TypeNumber of injuries and deathsEstimated property damageEvent/episode summariesUse the NOAA Storm Events Database Explorer ArcGIS Dashboard for a more interactive data exploration. Known Data Quality Issue: approximately 650,000 of the 1.71 million features do not include latitude or longitude values in the original NOAA data source. To address these issues in the 2021 data update, the following has been done:Use the county and state fields the geolocate unknown locations using the ArcGIS World Geocoding Service. These events will all appear at the county centroid. There are a total of 646,039 records in this category. The field LatLon Known describes if an original geolocation was provided (Yes) or if it was generated per above (No).Marine (CZ_Type = M) locations without a known lat/lon were not included. There are a total of 3,987 records in this category. For related archives of weather information, please see the Windstorm Points and Paths, Hailstorm Points and Paths, and Historical Hurricane layers.Data caveatsPer NCEI, the "National Weather Service receives their information 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." However, these sources are all population-dependent, and many severe weather events are assumed to not be reported in areas of low population. Not only does this bias occur across space, but also across time as many areas had lower populations in the mid-20th Century, and more advanced networks and reporting methods have evolved with technology.

From https://www.ncdc.noaa.gov/stormevents/

Storm Events Database

The Storm Events Database contains the records used to create the official NOAA Storm Data publication, documenting:

• The occurrence of storms and other significant weather phenomena having sufficient intensity to cause loss of life, injuries, significant property damage, and/or disruption to commerce;

• Rare, unusual, weather phenomena that generate media attention, such as snow flurries in South Florida or the San Diego coastal area; and

• Other significant meteorological events, such as record maximum or minimum temperatures or precipitation that occur in connection with another event.

The database currently contains data from January 1950 to September 2020, as entered by NOAA's National Weather Service (NWS). Due to changes in the data collection and processing procedures over time, there are unique periods of record available depending on the event type. NCEI has performed data reformatting and standardization of event types but has not changed any data values for locations, fatalities, injuries, damage, narratives and any other event specific information. Please refer to the Database Details page for more information.

This layer has been updated with an improved version available here. When severe weather occurs in the United States, there are networks of humans and sensors that observe and report the events and their details to the National Weather Service. These storm reports are aggregated and archived by NOAA's National Centers for Environmental Information. With over 1.7 million records over 70 years, the Storm Events Database is the most comprehensive, official record of severe weather in the U.S. This layer is a simplified version of the full database, providing information on:DateLocationEvent TypeNumber of injuries and deathsEstimated property damageEvent/episode summariesFor related archives of weather information, please see the Windstorm Points and Paths, Hailstorm Points and Paths, and Historical Hurricane layers.Data caveatsPer NCEI, the "National Weather Service receives their information 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." However, these sources are all population-dependent, and many severe weather events are assumed to not be reported in areas of low population. Not only does this bias occur across space, but also across time as many areas had lower populations in the mid-20th Century, and more advanced networks and reporting methods have evolved with technology.

• Update Frequency: Weekly

Data from this dataset can be downloaded/accessed through this dataset page and Kaggle's API.

Context

Severe weather is defined as a destructive storm or weather. It is usually applied to local, intense, often damaging storms such as thunderstorms, hail storms, and tornadoes, but it can also describe more widespread events such as tropical systems, blizzards, nor'easters, and derechos.

The Severe Weather Data Inventory (SWDI) is an integrated database of severe weather records for the United States. The records in SWDI come from a variety of sources in the NCDC archive. SWDI provides the ability to search through all of these data to find records covering a particular time period and geographic region, and to download the results of your search in a variety of formats. The formats currently supported are Shapefile (for GIS), KMZ (for Google Earth), CSV (comma-separated), and XML.

Content

The current data layers in SWDI are:
- Filtered Storm Cells (Max Reflectivity >= 45 dBZ) from NEXRAD (Level-III Storm Structure Product)
- All Storm Cells from NEXRAD (Level-III Storm Structure Product)
- Filtered Hail Signatures (Max Size > 0 and Probability = 100%) from NEXRAD (Level-III Hail Product)
- All Hail Signatures from NEXRAD (Level-III Hail Product)
- Mesocyclone Signatures from NEXRAD (Level-III Meso Product)
- Digital Mesocyclone Detection Algorithm from NEXRAD (Level-III MDA Product)
- Tornado Signatures from NEXRAD (Level-III TVS Product)
- Preliminary Local Storm Reports from the NOAA National Weather Service
- Lightning Strikes from Vaisala NLDN

Disclaimer:
SWDI provides a uniform way to access data from a variety of sources, but it does not provide any additional quality control beyond the processing which took place when the data were archived. The data sources in SWDI will not provide complete severe weather coverage of a geographic region or time period, due to a number of factors (eg, reports for a location or time period not provided to NOAA). The absence of SWDI data for a particular location and time should not be interpreted as an indication that no severe weather occurred at that time and location. Furthermore, much of the data in SWDI is automatically derived from radar data and represents probable conditions for an event, rather than a confirmed occurrence.

Acknowledgements

Dataset Source: NOAA. This dataset is publicly available for anyone to use under the following terms provided by the Dataset Source — http://www.data.gov/privacy-policy#data_policy — and is provided "AS IS" without any warranty, express or implied, from Google. Google disclaims all liability for any damages, direct or indirect, resulting from the use of the dataset.

Cover photo by NASA on Unsplash
Unsplash Images are distributed under a unique Unsplash License.

This map contains continuously updated U.S. tornado reports, wind storm reports and hail storm reports. Click each feature to receive information about the specific location and read a short description about the issue.Now contains ALL available Incident Report types, for a total of 15, not just Hail; Wind; and Tornados.See new layer for details or Feature Layer Item with exclusive Past 24-Hour ALL Storm Reports Layer.Each layer is updated 4 times hourly from data provided by NOAA’s National Weather Service Storm Prediction Center.A full archive of storm events can be accessed from the NOAA National Centers for Environmental Information.SourceNOAA Storm Prediction Center https://www.spc.noaa.gov/climo/reportsNOAA ALL Storm Reports layer https://www.spc.noaa.gov/exper/reportsSample DataSee Sample Layer Item for sample data during inactive periods!Update FrequencyThe service is updated every 15 minutes using the Aggregated Live Feeds MethodologyArea CoveredCONUS (Contiguous United States)What can you do with this layer?This map service is suitable for data discovery and visualization.Change the symbology of each layer using single or bi-variate smart mapping. For instance, use size or color to indicate the intensity of a tornado.Click each feature to receive information about the specific location and read a short description about the issue.Query the attributes to show only specific event types or locations.Revisions:Aug 10, 2021: Updated Classic Layers to use new Symbols. Corrected Layer Order Presentation. Updated Thumbnail.Aug 8, 2021: Update to layer-popups, correcting link URLs. Expanded length of 'Comment' fields to 1kb of text. New Layer added that includes ALL available Incident Types and Age in 'Hours Old'.This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency.If you would like to be alerted to potential issues or simply see when this service will update next, please visit our Live Feed Status Page.

Abstract

This dataset contains the storm events in the United States from 1951-2021 compiled by NOAA. The data was downloaded on July 28, 2021. The only modification from the raw data was an outer join based on event ID. See details in documentation.

Documentation

NOAA’s Storm Prediction Center (SPC) maintains a database of daily US storm data as reported by local National Weather Service offices from trained weather spotters. The types of storm data recorded by SPC include reports of Tornados, Wind, and Hail. This dataset has been subjected to a common suite of quality assurance reviews to avoid duplication of the reported weather events in the data set. The respective report type datasets are available in BigQuery. The dataset is updated daily and provides initial details from a storm event. For complete details for each storm event, see NOAA's severe storm events page. This dataset includes detailed information about property damage assessment, storm severity, and more. It is published within 120 days of the storm event, with detailed information verified by the National Weather Service as early as 1950. This public dataset is hosted in Google BigQuery and is included in BigQuery's 1TB/mo of free tier processing. This means that each user receives 1TB of free BigQuery processing every month, which can be used to run queries on this public dataset. Watch this short video to learn how to get started quickly using BigQuery to access public datasets. What is BigQuery .

Storm Data is provided by the National Weather Service (NWS) and contain statistics on...

This repository contains the input data used in the Jupyter notebook downloadable from Github here.

Such input data consists in two main datasets:

A raw (global and regional) flood reports from four different databases.

A global daily rainfall analysis from NOAA (CPC_GLOBAL_PRCP_v1.0).

The Jupyter notebook runs a Python code that post-processes the raw flood reports, using information extracted from other datasets, to select some reports of interest (mainly regarding pluvial and flash floods). At a later stage, such reports are merged into a single database for global pluvial/flash flood reports. The Jupyter notebook also runs a Metview-Python code to visualize partial and final results as map plots.

The four original databases are:

FloodList, FL (Global domain): http://floodlist.com/

Emergency Events Database, EMDAT (Global domain): https://www.emdat.be/

European Severe Weather Database, ESWD (Europe): https://www.essl.org/cms/european-severe-weather-database/

Storm Events Database, SED (USA): https://www.ncdc.noaa.gov/stormevents/

NOTE: For more details about these databases (documentation, licenses, etc.), look at the README.md file.

NOTE: The data in this repository is intended for an exclusive NON-COMMERCIAL academic or personal use, and it is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License. For more information, look at the LICENSE.md file.

Storm Data is provided by the National Weather Service (NWS) and contain statistics on personal injuries and damage estimates. Storm Data covers the United States of America. The data began as early as 1950 through to the present, updated monthly with up to a 120 day delay possible. The data are also available from the NCDC Storm Event database, DSI 3910_03, to find various types of storms recorded in your county, or use other selection criteria as desired. The data contain a chronological listing, by state, of hurricanes, tornadoes, thunderstorms, hail, floods, drought conditions, lightning, high winds, snow, temperature extremes and other weather phenomena.

Overview of Data Sources

Flooding Event Data: The flooding event summaries were developed using the NOAA Storm Events Database, available for download at NOAA National Centers for Environmental Information website. While there are many weather events provided in the NOAA Storm Events Database, only the following values were selected for inclusion in the locality summaries: coastal flood, flash flood, flood, heavy rain, hurricane (typhoon), and tropical storm. Detailed descriptions of event types are provided in Appendix A of NOAA's National Weather Service documentation. The data included in this summary includes events recorded from January 1996 through August 2021.

FEMA National Flood Insurance Program Claims: The NFIP claims data were obtained through the FIMA NFIP Redacted Claims data, available through the OpenFEMA data portal. The data used in this analysis was last updated December 6, 2021.

While every effort has been made to obtain current information about the flood events and flood insurance claims contained herein, no representation or assurance is made regarding the accuracy of the underlying data. Please contact HRDPC staff with questions regarding this dashboard product.

This map contains continuously updated U.S. tornado, wind, hail, and 12 other storm reports filtered to present the past 24-hours of available incidents reported. You can click on each to receive information about the specific location and read a short description about the issue.The layer content is updated 4 times hourly from data provided by NOAA’s National Weather Service Storm Prediction Center.A full archive of storm events can be accessed from the NOAA National Centers for Environmental Information.SourceNOAA Storm Prediction Center https://www.spc.noaa.gov/climo/reportsSample DataSee Sample Layer Item for sample data during inactive periods!Update FrequencyThe service is updated every 15 minutes using the Aggregated Live Feeds MethodologyArea CoveredCONUS (Contiguous United States)Host Feature Service Item: USA Storm ReportsWhat can you do with this layer?This map service is suitable for data discovery and visualization.Change the symbology of each layer using single or bi-variate smart mapping. For instance, use size or color to indicate the intensity of a tornado.You can click on each to receive information about the specific location and read a short description about the issue.Query the attributes to show only specific event types or locations.This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency.If you would like to be alerted to potential issues or simply see when this Service will update next, please visit our Live Feed Status Page!

This dataset is a packaged set of rainfall data amalgamated together for the August 7, 2018 storm event. It includes preliminary data from the TRCA meteorological gauge network.

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic _location of Massachusetts, United States Of America. The time period coverage is from 1950 to -63 in calendar years before present (BP). See metadata information for parameter and study _location details. Please cite this study when using the data.

This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of Massachusetts, United States Of America. The time period coverage is from 1918 to -41 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.