1. Data Attribution & Credits

This dashboard displays real-time data from the following sources. This website is not affiliated with any of these organizations; data is accessed from their publicly available APIs and feeds.

Observations & Surface Data

• ASOS/METAR Observations & Local Storm Reports: Iowa Environmental Mesonet (IEM), Iowa State University. Data originally sourced from the NOAA/NWS Automated Surface Observing System network. mesonet.agron.iastate.edu
• mPING (Crowd-sourced Precipitation): Meteorological Phenomena Identification Near the Ground project — NOAA National Severe Storms Laboratory (NSSL) and the University of Oklahoma. mping.ou.edu

Radar & Satellite

• MRMS (Multi-Radar Multi-Sensor): NOAA National Severe Storms Laboratory (NSSL) and NOAA/NWS. Products include SHSR, MESH, QPE, rotation tracks, and precipitation rate. nssl.noaa.gov

Numerical Weather Prediction

• HRRR (High-Resolution Rapid Refresh): NOAA National Centers for Environmental Prediction (NCEP) / Global Systems Laboratory (GSL). 3 km hourly convection-allowing model. rapidrefresh.noaa.gov/hrrr

Forecasts & Outlooks

• SPC Convective Outlooks, Fire Weather Outlooks, Active Watches & Mesoscale Discussions: NOAA Storm Prediction Center (SPC). spc.noaa.gov
• NWS Active Warnings, Watches & Advisories: NOAA National Weather Service, via the public api.weather.gov API. weather.gov
• WPC Quantitative Precipitation Forecasts (QPF): NOAA Weather Prediction Center (WPC). Day 1–3 precipitation and hazard forecasts. wpc.ncep.noaa.gov

Drought & Climate

• U.S. Drought Monitor: Produced jointly by the National Drought Mitigation Center (NDMC) at the University of Nebraska-Lincoln, the USDA, and NOAA. Updated weekly. droughtmonitor.unl.edu

Mapping Infrastructure

• Interactive Maps: Powered by Leaflet v1.9.4 (BSD 2-Clause License).
• Dashboard Grid: Powered by Gridstack.js v10 (MIT License).
• Map Tiles: © CARTO (CartoDB Dark Matter & Positron); © OpenStreetMap contributors; © Esri, Maxar, Earthstar Geographics (World Imagery); U.S. Geological Survey (USGS Topo).
• Geographic Overlays: State, county, NWS CWA, and timezone boundary GeoJSON derived from public U.S. Census Bureau and NOAA sources.

2. Disclaimers

NOT FOR OPERATIONAL USE: Do NOT use this dashboard for emergency response, aviation, storm chasing safety planning, evacuation decisions, or any purpose where data accuracy is critical. For official warnings and watches, always consult the National Weather Service at weather.gov and the Storm Prediction Center at spc.noaa.gov.

REALTIME DATA DELAYS: Data displayed on this dashboard is subject to ingestion and processing delays. Watches, outlooks, and observations may not reflect the most current conditions. Active alerts shown here are sourced from upstream NOAA/SPC feeds and may lag behind official NWS/SPC products.

NO WARRANTY: THIS DATA IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. USE AT YOUR OWN RISK.

LIMITATION OF LIABILITY: IN NO EVENT SHALL THIS WEBPAGE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF THIS WEBSITE OR DATA, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

3. Terms of Use

Acceptance: By accessing this dashboard, you agree to these terms. If you do not agree, do not use this website.

Permitted Use: This dashboard is provided for educational, research, and non-commercial situational awareness only.

Prohibited Use: You may NOT:

• Use this data for commercial purposes without permission
• Use this data for safety-critical, operational, aviation, or emergency-response decisions
• Redistribute or resell this data
• Use automated tools to bulk-download data in a manner that degrades service for others
• Use this data in violation of any applicable law

Modifications: We reserve the right to modify or discontinue this service at any time without notice.

4. Privacy Policy

Data Collection: We do not collect, store, or share any personal information from visitors to this website.

Local Storage: This dashboard saves your layout preferences in your browser's local storage. This data never leaves your device.

Analytics: This site uses Google Analytics (gtag.js) to collect anonymized usage statistics (page views, session duration). No personally identifiable information is collected. See Google's Privacy Policy for details.

Third-Party Services: This dashboard loads data from third-party services (Iowa State Mesonet, NOAA, USDA, University of Nebraska-Lincoln, map tile providers). Those services may log requests according to their own privacy policies.

Log Files: Our web server may log IP addresses, timestamps, and requested URLs for security and debugging purposes. These logs are not shared with third parties.

5. Copyright & Licensing

Website: © 2025 Historical Weather (hwx). Website design, layout, and application code. All rights reserved.

Data: Weather, forecast, and drought data is sourced from U.S. federal government agencies (NOAA, USDA, USGS) and is in the public domain. Third-party data (Iowa Environmental Mesonet, University of Nebraska-Lincoln NDMC) is used in accordance with their respective public access terms. See Section 1 for full attribution.

Third-Party Libraries & Tiles: Leaflet (BSD 2-Clause), Gridstack.js (MIT), CARTO map tiles, OpenStreetMap data (ODbL), Esri imagery — all remain the property of their respective owners and are subject to their own licenses.

6. Contact Information

For questions, data errors, or accessibility issues, please contact:

Name: Micheal Simpson

Email: historicalweatherhwx@gmail.com