VortiCast

Name: VortiCast
Rating: 4.8 (19 reviews)
Author: Juhl Software, LLC

NWS forecasts, models & radar

19 ratings

6 reviews

☀️ Weather

Free

In-App Purchases

Details

Released
Updated
Version
Compatibility
Age Rating
Monetization
Size
Devices
Data updated
Languages

July 15, 2026
July 26, 2026
1.1
iOS 18.6+
4+
freemium
44.99MB
iPhone
6 days ago
American English

Features

Developer

Juhl Software, LLC

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About

This app provides detailed weather forecasts, going beyond single numbers to show the sources and confidence levels behind predictions. It offers advanced radar, model comparisons, and pro-grade tools for sky watchers.

✓National Weather Service forecasts

✓Ensemble model data for long-range outlooks

✓18-hour future radar playback

✓Forecast confidence indicators

✓Model comparison tools

✓Multi-band satellite imagery

✓Live watches, warnings, and advisories

Show original description

What's New in VortiCast

1.1

July 26, 2026

New in 1.1 LightningCast — see where lightning is headed next. VortiCast now shows NOAA LightningCast: forecast-probability contours that estimate the chance of a lightning flash in the next 60 minutes, drawn from NOAA GOES satellite imagery. Because it reads the developing cloud rather than the strikes, it often lights up 20–45 minutes before the first flash. It sits right alongside the existing observed-lightning layer, so you can see what's happening now next to what's expected next. Tap the legend to learn how to read the contours and how the two differ. NOAA LightningCast is a research product, included for informational use. (Pro) Plus surface-observation accuracy improvements and under-the-hood reliability fixes.

Pro Monthly

Pro radar, forecasts, model comparisons and more

$5.991 Month

7 Days trial

How to cancel VortiCast subscription ⁉️

User reviews

Most Recent Highest Rated Lowest Rated

Excellent weather app

This is the most intuitive, yet comprehensive weather app I’ve used. Fantastic radar, superior extended forecast modeling, and finally, an app with solid wind forecasting.

Spatter999

9 days ago

Great Weather App!!

After years of using standard iPhone weather apps, this is a refreshing change to see such well researched data presented in a clear and easy to read and understand format. It’s great to finally be able to rely on accurate weather analysis and forecasts. Many thanks to the developer for such an excellent product! Highly recommend!!

Larry Reviews

15 days ago

Great App

I’ve tried many weather apps and VortiCast matches all that I have tried plus some. Love the radar and loads fast. The specific details of all weather patterns are easy to find and very accurate. Thanks.

JKNAPPER14

15 days ago

#1 weather app

Best weather app to plan my day (and travels)!

Aggvb b

20 days ago

Great weather app

Love this app - clean features and it’s easy to use, and everything I need is right there without digging or needing to look at other weather forecasts. The radar works great, weather alerts come through quickly, and it loads fast every time I open it. I’ve tried a lot of weather apps over the years, and this one is easily my favorite. Definitely recommend giving it a try.

Broncos21!

21 days ago

FAQ

What weather sources does VortiCast use?

VortiCast uses National Weather Service data for days 1-7. For days 8-14, it taps into the ECMWF ensemble (EPS) and GEFS, providing a range of possible outcomes rather than a single prediction.

How does VortiCast's radar forecast work?

The radar feature plays 18 hours into the future, blending live MRMS radar with NOAA's HRRR model. This provides physically grounded guidance for storm movement, not just a cartoon loop.

Can I compare different weather models in VortiCast?

Yes, VortiCast's 'Compare Models' feature allows you to see NWS, GFS, and ECMWF data side-by-side, helping you identify areas of agreement and divergence.

What is 'Forecast Confidence' in VortiCast?

Forecast Confidence indicates how settled the weather outlook is, day by day, by analyzing the spread across ensemble models. It highlights whether temperature or precipitation forecasts are less certain.

What features are included in VortiCast Pro?

VortiCast Pro unlocks the Radar Forecast, Forecast Confidence, Compare Models, extended hourly graphs, advanced satellite bands, GLM lightning, surface observations, SPC outlooks, and wind forecast maps.

How much does VortiCast Pro cost?

VortiCast Pro is available for $5.99 per month or $39.99 per year. New subscribers receive a 7-day free trial.

What devices does VortiCast support?

Currently, VortiCast is supported on iPhones. The app is rated for ages 4 and up.

How often is VortiCast updated?

VortiCast was last updated on July 15, 2026, with version 1.0. The release date was also July 15, 2026.