🛰️ Space Weather

Live solar and geomagnetic conditions powered by NOAA SWPC, with local caching for speed and reliability.

Current Space Weather

Kp Index
3
Unsettled
Solar Flare
C-Class
Flux 1.15e-6
Solar Wind
--
km/s from NOAA plasma feed
Last Refresh
9:00 PM
Jul 21, 2026

Geomagnetic Activity

Unsettled
Recent Kp readings from NOAA SWPC. Values of 5 or higher indicate geomagnetic storm conditions.

Aurora Outlook for Missouri

Quiet to mildly unsettled geomagnetic conditions. Aurora is not likely this far south right now.

Quick Read
Low Missouri potential right now
Storm Threshold
Kp 5+
Best Setup
Dark sky + clear weather

Aurora Viewline Tonight & Tomorrow Night

NOAA Experimental Forecast

These NOAA SWPC viewline graphics show the southern line where the aurora may be visible on the northern horizon for tonight and tomorrow night across North America.

NOAA Tonight's Aurora Viewline Forecast
Tonight's Aurora Viewline
Forecast southern extent for where aurora might be seen on the northern horizon tonight, based on NOAA's forecast Kp window.
NOAA Tomorrow Night's Aurora Viewline Forecast
Tomorrow Night's Aurora Viewline
Next-night forecast viewline from the same NOAA product, useful for seeing whether the southern visibility edge shifts north or south.

How to Read It

Red Line
Southern viewing edge
Green to Red Oval
Brighter aurora zone
Missouri Right Now
Unlikely

If Missouri is north of or close to the red viewline, there is at least a chance of seeing aurora low on the northern horizon. If the line stays well north of Missouri, viewing here is much less likely.

Actual visibility still depends on darkness, cloud cover, and local light pollution.

GOES X-ray Flux

C-Class
The long-wave GOES X-ray channel is what drives the common A/B/C/M/X flare classes.
Latest NOAA aurora ovation map

Aurora Oval

Latest NOAA ovation imagery. Even when the oval expands, local cloud cover still matters for Missouri viewing.

Solar Wind Speed

Unavailable
Solar wind chart data was not available in the most recent refresh.

About This Page

NOAA Space Weather Prediction Center NOAA SWPC Data Services

This page uses NOAA SWPC data feeds for K-index, GOES X-ray flux, solar wind plasma, and space weather alerts. Cache refresh runs every 10 minutes when the page is visited.

Last cached update: Jul 21, 2026 9:00 PM

Latest NOAA Space Weather Alerts

K04W
2026-07-21 17:09:41.817
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Aurora may be visible at high latitudes such as Canada and Alaska.
K04A
2026-07-21 12:01:42.537
ALERT: Geomagnetic K-index of 4
Aurora may be visible at high latitudes such as Canada and Alaska.
K04W
2026-07-21 09:11:04.820
WARNING: Geomagnetic K-index of 4 expected
Aurora may be visible at high latitudes such as Canada and Alaska.
EF3A
2026-07-20 14:42:01.780
ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Space Weather Message Code: ALTEF3 Serial Number: 3720 Issue Time: 2026 Jul 20 1442 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu Continuation of Serial Number: 3719 Begin Time: 2026 Jul 17 1750 UTC Yesterday Maxi
A20F
2026-07-19 20:14:34.243
WATCH: Geomagnetic Storm Category G1 Predicted
Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
EF3A
2026-07-19 12:04:04.020
ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu
Space Weather Message Code: ALTEF3 Serial Number: 3719 Issue Time: 2026 Jul 19 1204 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1,000pfu Continuation of Serial Number: 3718 Begin Time: 2026 Jul 17 1750 UTC Yesterday Maxi