WeatherAI 2026.04.5: AI Severe Weather Summaries, Mesoscale Precipitation Discussions, and a Polished Home Screen
An AI-generated narrative for the SPC Day 1 outlook, WPC Mesoscale Precipitation Discussions in the Severe Weather Hub, a refreshed Home Screen, a redesigned Daily Forecast, and more.
What's New
WeatherAI 2026.04.5 builds on the new Severe Weather Hub with an AI-generated national outlook summary, adds WPC Mesoscale Precipitation Discussions, and brings a refreshed Home Screen and Daily Forecast to the rest of the app.
Here's everything in this release.
AI Summary on the Severe Weather Hub
The National view of the Severe Weather Hub now includes an AI-generated narrative summary of the SPC Day 1 Categorical Convective Outlook. Instead of piecing together the day's risk areas yourself, you can read a quick, plain-language summary of where the threats are and what kinds of hazards are most likely — the day's national severe weather story at a glance.
WPC Mesoscale Precipitation Discussions
The Severe Weather Hub now surfaces WPC Mesoscale Precipitation Discussions (MPDs), which are issued when heavy rainfall or flash flooding may develop in the next few hours.
- Listed alongside SPC discussions in National → Active Threats
- Highlighted in Near Me when one covers your location
If you've followed SPC mesoscale discussions for severe storms, MPDs are the equivalent product for short-fuse flash flood threats.
Auto-Refreshing Severe Weather Hub
The Severe Weather Hub now refreshes itself in the background while it's open, so warnings, watches, mesoscale discussions, and storm reports stay current without needing to pull to refresh during a fast-moving event.
Improved Storm Report List
Storm report rows now show a hazard-specific icon and a value badge that highlights significant hail (≥ 2") and significant wind (≥ 75 mph) at a glance, making it much easier to scan a long list of reports for the standout events.
Correlation Coefficient Color Changes
The correlation coefficient (CC) radar product has a new color schema designed to better differentiate between meteorological and non-meteorological echoes, and to more clearly highlight areas of potential debris — useful when watching for tornado debris signatures.
Polished Home Screen
The Home Screen has been refreshed with a cleaner, more readable layout:
- Larger, easier-to-read current temperature and condition
- Cleaner top bar with new pill-style Updated, Customize, and Share controls
- Smoother scrolling experience
Redesigned Daily Forecast
The Daily Forecast list and day detail views have been reworked for better readability.
- "Today" is now clearly labeled in the daily list
- The day detail header has a cleaner layout with a precipitation snapshot pill
Fire Weather Extreme Hatching
The SPC Fire Weather outlook now correctly draws the diagonal hatching pattern over Extreme risk areas, matching the official SPC product styling.
Bug Fixes and Improvements
- Improved performance of turbulence tile rendering and animation
- Fixed an issue where AI summaries couldn't be generated for some volcanoes
- Fixed a few small layout and color issues in the chat composer and message bubbles
Get the Update
WeatherAI 2026.04.5 is available now on the App Store for iPhone, iPad, and Vision Pro. If you have automatic updates enabled, you may already have it.
Have questions or feedback? Reach out through Settings → Send Feedback in the app.
Keep Reading
These articles cover adjacent weather questions, practical explainers, and planning workflows related to this topic.
Guides
SPC Outlooks Explained: Marginal, Slight, Enhanced, Moderate, High Risk
Learn how to read Storm Prediction Center outlooks, what SPC risk levels mean, and how tornado, hail, wind, moisture, instability, lift, and shear shape severe weather forecasts.
Weather Education
Understanding Flash Floods: Causes, Warnings, and Safety
Learn what causes flash floods, how to spot the risk on radar, the difference between watches, warnings, and emergencies, and critical safety steps that save lives.
Weather Education
Moisture, Instability, Lift, and Wind Shear: The 4 Storm Ingredients
Learn the four thunderstorm ingredients meteorologists look for: moisture, instability, lift, and wind shear, plus how they combine to create severe storms.
Useful Next Stops
Jump from the explainer into tools, feature pages, and seasonal hubs that deepen the topic.
Feature
Severe Weather
Follow outlooks, watches, warnings, and storm signals in one severe-weather workflow.
Guide
How to Read SPC Outlooks
Decode severe weather outlooks, probability maps, and categorical risk levels before storms arrive.
Guide
NWS Outlook vs Watch vs Warning
Know how alert wording changes from early awareness to immediate action.
Glossary
Hail
Balls or irregular lumps of ice produced in severe thunderstorms.