NWWS-OI LIVE FEED  ·  v0.0.31 beta

Real-Time NWS
Alert Monitoring.

StormSync VT/OI connects directly into the NOAA Weather Wire Service Open Interface, the same live feed powering TV broadcasters and emergency management agencies across the country. Alerts appear on screen in under three seconds, not minutes, with full VTEC parsing and tiered audio tones that tell you exactly what is happening before you even look up.

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NWWS-OIDirect Feed
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StormSync VT/OI — LIVE FEED Connected
18:44KOUN
Tornado Emergency
115
18:41KBMX
Tornado PDS Warning
112
18:38KFWD
Tornado Warning (Confirmed)
105
18:35KLZK
Tornado Warning (Observed)
100
18:32KSRX
Tornado Warning
90
18:30KSPC
PDS Tornado Watch
88
18:27KDVN
Destructive SVR Warning
95
18:24KGSP
Considerable SVR Warning
92
18:21KPAH
Severe Thunderstorm Warning
90
18:18KSPC
Severe Thunderstorm Watch
80
18:15KMEG
Flash Flood Emergency
100
18:12KLCH
Flash Flood Considerable
88
18:09KJAN
Flash Flood Warning
85
18:06KTBW
Special Marine Warning
70
18:03KMPX
Winter Storm Warning
85
17:59KJAX
Wind Advisory
45
Capabilities

Built for people who take weather seriously.

Every design decision in StormSync exists to get critical information in front of you faster and more clearly than anything else available to a civilian operator.

01 — CONNECTION

NWWS-OI Direct Feed

Authenticates directly to NOAA's Weather Wire Service Open Interface over XMPP. No third-party aggregators, no polling delays. Products arrive at your machine the same moment they arrive at broadcast stations.

02 — PARSING

Full VTEC Decoding

Every incoming product is decoded at the VTEC level, including phenomena codes, significance levels, UGC zones, and P-VTEC action strings. Tornado warnings are broken into five sub-types, each assigned its own severity rank between 1 and 115.

03 — DISPLAY

Color-Coded Severity

Every alert tier has its own distinct color. Tornado Emergency in hot pink, PDS in purple, confirmed signatures in bright red, down through oranges, yellows, and greens to advisories. Accent colors for most tiers are fully customizable and persist across sessions.

04 — PRODUCTS

Full SPC Product Suite

Day 1 through Day 8 convective outlooks, Mesoscale Discussions, active watches on a map layer, and a warnings map showing every polygon currently in the system database.

05 — AUDIO

Tiered Alert Tones

Audio tones escalate in urgency with severity level. Each tornado tier has a distinct sound, so the audio alone communicates what is happening before you look at the screen. Custom audio files can replace any default tone.

06 — STORAGE

Local SQLite History

Every alert received is written to a local SQLite database with full metadata intact. Nothing leaves your computer. The full history is available for post-event analysis, session replay, or exporting at any time.

Feature Examples

What it looks like in practice.

Two of the most-used parts of StormSync, rendered accurately so you know what to expect before you install.

Customization

Alert Color Palette

Every major alert tier has an individually assignable accent color. Open the settings panel, click any swatch, pick a new color, and it applies immediately with no restart required.

ALERT COLOR PALETTE

Customize accent colors for each alert tier. Changes apply immediately and persist across sessions.
Tornado Emergency
Tornado PDS Warning
Tornado Warning Confirmed
Tornado Warning
PDS Tornado Watch
Tornado Watch
Destructive SVR Warning
Considerable SVR Warning
Severe Thunderstorm Warning
Severe Thunderstorm Watch
Flash Flood Emergency
Flash Flood Considerable
Flash Flood Warning
Special Marine Warning
Winter Storm Warning
Alert Display

Warning Feed Boxes

Each incoming alert is rendered as a structured card showing the issuing WFO, the timestamp, the full alert classification, the affected county, and the numeric severity rank. The left accent stripe mirrors the tier color from your palette.

Severe Thunderstorm Warning
KOUN · 04/11, 11:30 PM UTC
Cleveland County, OK
90
Severe Thunderstorm Watch
KOUN · 04/11, 11:30 PM UTC
Cleveland County, OK
80
Destructive SVR Warning
KOUN · 04/11, 11:30 PM UTC
Cleveland County, OK
95
Tornado Warning
KFWD · 04/11, 11:30 PM UTC
Dallas County, TX
100
Tornado Emergency
KOUN · 04/11, 11:30 PM UTC
Cleveland County, OK
115
Screenshots

See it in action.

Real screenshots from live sessions.

SPC Outlook
Live SPC Outlook
SPC Outlook

This is an example of an official outlook from the SPC, from 4/2/2025. You can see the categorical outlook alongside the tornado, hail, and wind probabilities.

Tornado Alerts
Alert Feed
Warning Display

There are 4 levels to tornado warnings: standard, confirmed (not shown), PDS, and emergency.

SPC Archive
SPC Archive
Historical Outlooks

You can view outlooks as far back as October of 2019 (to be expanded to 2003).

Changelog

Latest Updates

StormSync VT/OI is in early beta. Expect bugs. If something breaks or behaves unexpectedly, please reach out at contact@stormsyncapp.com so it can be fixed quickly.
v0.0.31 beta Latest May 2026
Risk dashboard
Risk dashboard
Severe thunderstorm alerts
Severe thunderstorm alerts
SPC Archive
SPC Archive viewer
What's New
  • Live Outlook Tab: Added a dynamic environmental assessment dashboard that calculates current risk ratings based on specific metrics configured by a StormSync administrator, including violent tornadoes, hail, severe winds, supercells, and mesoscale convective systems.
  • SPC Archive: Integrated a historical search feature that allows users to fetch and view past convective outlooks from the Storm Prediction Center dating back to October 2019.
  • Warnings Map Update: Upgraded the core map component to actively display every warning currently held within the active system database, rendered with correct polygon geometry and tier colors.
Fixes and Improvements
  • Stability: No notable fixes required for this deployment cycle.