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Alerts:
Space Weather Message Code: ALTEF3
Serial Number: 3660
Issue Time: 2026 Mar 29 1247 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3659
Begin Time: 2026 Mar 22 1430 UTC
Yesterday Maximum 2MeV Flux: 1596 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Space Weather Message Code: ALTK04
Serial Number: 2647
Issue Time: 2026 Mar 29 0300 UTC

ALERT: Geomagnetic K-index of 4
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Space Weather Message Code: WARK04
Serial Number: 5303
Issue Time: 2026 Mar 29 0207 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2026 Mar 29 0207 UTC
Valid To: 2026 Mar 29 1200 UTC
Warning Condition: Onset
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

Space Weather Message Code: WATA20
Serial Number: 1103
Issue Time: 2026 Mar 28 1632 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Mar 29:  None (Below G1)   Mar 30:  G1 (Minor)   Mar 31:  None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: Isolated periods of G1 (Minor) geomagnetic storming are likely on 30 Mar due to CH HSS effects.
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

Space Weather Message Code: ALTEF3
Serial Number: 3659
Issue Time: 2026 Mar 28 1455 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3658
Begin Time: 2026 Mar 22 1430 UTC
Yesterday Maximum 2MeV Flux: 12785 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Solar-terrestrial indices for 28 March follow.
Solar flux 162 and estimated planetary A-index 10.
The estimated planetary K-index at 1200 UTC on 29 March was 2.33.

No space weather storms were observed for the past 24 hours.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are likely.


Geo Magnetic Forecast:

NOAA Ap Index Forecast
Observed Ap 27 Mar 007
Estimated Ap 28 Mar 009
Predicted Ap 29 Mar-31 Mar 008-018-012

NOAA Geomagnetic Activity Probabilities 29 Mar-31 Mar
Active                25/30/40
Minor storm           05/40/15
Moderate storm        01/10/01
Strong-Extreme storm  01/01/01

NOAA Kp index forecast 29 Mar - 31 Mar
             Mar 29    Mar 30    Mar 31
00-03UT        2.33      3.67      3.67
03-06UT        1.67      4.67      3.00
06-09UT        1.00      3.00      2.67
09-12UT        0.67      2.33      2.00
12-15UT        1.67      2.33      2.00
15-18UT        2.33      2.33      2.33
18-21UT        2.67      3.00      2.67
21-00UT        3.00      3.67      2.67


Extended Three Day Forecast:

A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 4 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Mar 29-Mar 31 2026 is 4.67 (NOAA Scale
G1).

NOAA Kp index breakdown Mar 29-Mar 31 2026

             Mar 29       Mar 30       Mar 31
00-03UT       3.67         3.67         3.67
03-06UT       3.67         4.67 (G1)    3.00
06-09UT       3.33         3.00         2.67
09-12UT       2.33         2.33         2.00
12-15UT       1.67         2.33         2.00
15-18UT       1.67         2.33         2.33
18-21UT       0.67         3.00         2.67
21-00UT       1.00         3.67         2.67

Rationale: G1 (Minor) geomagnetic storming is likely on 30 Mar in
response to +CH HSS influences.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Mar 29-Mar 31 2026

              Mar 29  Mar 30  Mar 31
S1 or greater    5%      5%      5%

Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm
production is forecast.

C. NOAA Radio Blackout Activity and Forecast

No radio blackouts were observed over the past 24 hours.

Radio Blackout Forecast for Mar 29-Mar 31 2026

              Mar 29        Mar 30        Mar 31
R1-R2           50%           50%           50%
R3 or greater   10%           10%           10%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts,
and a slight chance for an R3 (Strong) event, on 29-31 Mar.


Extended Space Weather Discussion:

Solar Activity

.24 hr Summary...
Solar activity was at low levels due to weak C-class flare activity from
Regions 4401 (N25W20, Eai/beta), 4404 (N14E39, Hsx/alpha) and 4405
(S27E52, Eao/beta-gamma). New Region 4408 (N09E72, Hsx/alpha) was
numbered this period. No significant changes were noticed in the spotted
regions.

No Earth-directed CMEs were observed in available coronagraph imagery.

.Forecast...
Solar activity is expected to be low with a high chance (50%) for
M-class flares (R1-R2/Minor-Moderate radio blackouts) through 31 Mar.

Energetic Particle

.24 hr Summary...
Electrons greater than 2 MeV at geosynchronous orbit reached a peak
level of 1,600 pfu at 28/1900 UTC. The greater than 10 MeV proton flux
remained at background levels.

.Forecast...
The greater than 2 MeV electron flux is expected to continue to reach
high levels through 29 Mar before returning to normal to moderate levels
on 30-31 Mar. The greater than 10 MeV proton flux is expected to
continue at background levels.

Solar Wind

.24 hr Summary...
Solar wind parameters reflected a mostly nominal regime until
approximately 28/2020 UTC when a weak enhancement in the IMF began.
Total field increased to 7 nT and the Bz component underwent a southward
deflection reaching -7 nT. Solar wind speeds were primarily under 400
km/s. Phi was predominantly in a negative solar sector, but became
variable post enhancement.

.Forecast...
Enhancements from recurrent, positive polarity CH HSS influences are
anticipated to begin by late 29 Mar and persist through 30 Mar.

Geospace

.24 hr Summary...
The geomagnetic field was at quiet to active levels.

.Forecast...
Quiet to active levels are expected on 29 Mar. G1 (Minor) geomagnetic
storming is likely on 30 Mar due to recurrent positive polarity CH HSS
effects. Unsettled to active conditions are then expected to persist
into 31 Mar.


27 Day Forecast:

Date | Radio Flux | Planetary A Index | Largest Kp Index
2026 Mar 23     120          34          6
2026 Mar 24     120          14          3
2026 Mar 25     122          12          3
2026 Mar 26     125          12          3
2026 Mar 27     130           8          3
2026 Mar 28     130           5          2
2026 Mar 29     128           8          3
2026 Mar 30     125          15          4
2026 Mar 31     125          10          3
2026 Apr 01     130           5          2
2026 Apr 02     120           5          2
2026 Apr 03     120          18          5
2026 Apr 04     115          24          5
2026 Apr 05     110          10          3
2026 Apr 06     120          15          4
2026 Apr 07     120           8          3
2026 Apr 08     118           7          2
2026 Apr 09     120          25          5
2026 Apr 10     110          40          6
2026 Apr 11     112          20          5
2026 Apr 12     115          12          3
2026 Apr 13     115           8          3
2026 Apr 14     110           7          2
2026 Apr 15     115           5          2
2026 Apr 16     115           4          2
2026 Apr 17     120           7          2
2026 Apr 18     122          48          6


  • GRAPH OPTIONS: Learn more
    It is recommended that you start out with the default options. As you get used to AF you can disable additional information and combine data series' together to maxamise the use of screen space.

  • DATA SOURCES: Learn more
    Some data sources can only be enabled or disabled via the tick box. Others are disabled using the slider set to 0, or enabled by setting the slider from 0.5 to 4. This number also represents the thinkness of the line plot onto the graph.

  • 'The' Aurora Forecast Index: Learn more
    These are two good options for predicting Auroras.

    The Aurora Forecast Index takes into account many data sources. As a general rule if it stays high for many hours there is a good possibility of an Aurora present.

    Aurora Forecast website usage is also a good indicator, as visitors to the site come from many traffic sources. General internet and community chatter transplating to visits is a great indicator.

  • Planatary K Index (Kp): Learn more
    The Kp number is a system of measuring aurora strength. The range goes from 0 to 9 (0 being calm, 1 very weak, all the way up to 9, which would represent a major geomagnetic storm with strong auroras visible).

    Kp 5 and above is classified as a geomagnetic storm. Most Aurora Hunters consider prolonged 3+ or higher worth investigation.

  • Ovation (Model) Short Term Forecast (GW):' Learn more
    The Ovation-Prime Model produced by SWPC calculates the energy interacting with the Earths magnetic field. This is a good indicator for Aurora activity.
  • DSCOVR Observatory (L1): Learn more

    The DSCOVR or Deep Space Climate Obervatory sits 1.5 million Kilometers from Earth, between the Earth and the Sun in the L1 orbit point, the neutral gravity point between the Earth and the Sun. DSCOVR provides space weather readings, allowing for up to an hour of warning on weather events. This is why DSCOVR's data appears in the future on the graph.

    Strong negative Bz direction is linked to Aurora's because the solar wind magnetic direction is in direct oposition with the Earths magnetic field.

  • ACE Observatory (L1): Learn more

    ACE or Advanced Composition Explorer sits 1.5 million Kilometers from Earth, between the Earth and the Sun in the L1 orbit point, the neutral gravity point between the Earth and the Sun. ACE has now been replaced by DSCOVR, but the data is still useful for comparing to DSCOVR.
  • GOES Satalites: Learn more

    GOES or Geostationary Operational Environmental Satellites sit 46 Kilometers above the Earth in geostationary orbit. They provide local space weather data and are a good indicator for current geomagnetic conditions.

  • Terrestrial Magnetometer Sources: Learn more
    Terrestrial or surface magnetometers detect fluctuations in the Earths magnetic field from the ground.
    These do not work as well as satalites as the magnetic field obsorbs some of the effects from the solar winds.
    There is a mix of govenment and citizen science stations listed here, including two run by Aurora Forecast in Hobart.
  • User Magnetometer ID's: Learn more
    If you have a TAFS Magnetometer and you want to add it to the graph you can do it here.
    Insent your Mag's Unique ID.

 

v4.16b

Aurora Forecast is free to use, however it takes a lot of time and effort to maintain. If you find it useful and are a regular user then please consider making a donation to keep it running. Feedback is always welcome.


v4.X Release 17th Dec 2020)
Fixed New GOES and HPI inputs from noaa for Json (17/12/20).
Addded the ability to add 2 custom Magnetometers in settings (comming soon) (18/10/19).
Improved Hobart Magnetometer code. (18/18/19)
Move all presets into their own pop out side menu. (19/06/19)
Added Composite weather maps (TAS, VIC and SA), thanks to Oz forecast! (19/06/19)
UI Upgrades, Name, Logo and Website Site Changes.
Added custom line widths for most items.
Added GOES Difference (#1 - #2)
Added Ovation-prime model outputs.

v3.8x
Various Updates, New AF Index Algo. (8/12/18)

v3.6x
Added more Presets. Disabled Presets overwriting graph views (6/7/18)
Added GeoSpace Kp Model Prediction. (3/7/18)
Added SWPC Kp Forecast + Observation. (2/7/18)
Removed WingKP and USKp. :( No longer Avaliable. (2/7/18)
Removed feed from www.dunedinaurora.nz (Unreliable). (2/7/18)
Updates to latest JQuery, JQuery Mobile and AmCharts etc. (2/7/18)
Enhanced Pro setting with Dynamic Preasure. (2/7/18)
Added Quickselect preset buttons to main page. (2/7/18)
 
v3.5x
Added Ruru Observatory Magnetometer. (25/4/28)
Added Forecast Sub Tabset. (1/3/18)
Added Extended Discussion Text, 27Day FC (1/3/18)
Removed Dial, and Added Forecast Report. (28/2/18)
Updated A few settings for better visilation. (28/2/18)
Updated Goes-13 is Now Goes-14 (15/2/18)
Improved Commmunity Activity for faster loads.
Consolidated Proton Density / Dynamic Preasure.
Added Additional Balloon Text.
Added TAFS Visual Probability in %.
User Interface Upgrades.
Add 'Dial' for the basics, with default support.
Added one click presets.
 
v2.1 - v2.49
Added 'Automatic Chart Update' option in settings.
Database caching enabled, significant load time improvements.
Extension to max 96 hours of data, up from 24.
Added ACE Bt,Bx and By for comparison.
Added More User Presets.
Fixed Orentation Change Alert.
Small layout changes.
Added Header Image.
Removed Top Header to fee up Space, Refresh added to Chart Tab.
Added Community Activity Indicator
Fixed MAG value issues in graph.
Added Second Hobart MAG Source.
Updated Comment Features (Disable).
 
v2.0
Fixed DSCOVR B? display bug.
Added MAG Stack Feature.
Upgrade to json feeds.
Feeds are timezone and forecast aware, making them super fast.
DB Optimisation, improved DB search times.
Charts are now zoomable, allow selection and export.
Added USAF Kp, Updated Wing Kp.
Added Ovation Aurora Short Term Forecast.
Added Macquarie Island MAG feed.
Added Mawson MAG Feed.
Added Canberra Feed.
Added MAG feed from www.dunedinaurora.nz (Portobello).
Added Brendan's experemental MAG feed (Hobart).
Fixed cookie bug, One Alert is enough for landscape mode.
 
> v1.0 (Started 20/10/2014)

  Mawson and Macquarie Island data is copyright Commonwealth of Australia (Geoscience Australia), and redistributed under Creative Commons v4.
Thanks to INTERMAGNET for promoting high standards of magnetic observatory practice in providing access to these feeds. (www.intermagnet.org).

Local Australian weather composite maps provided by Oz Forecast

Aurora Forecast is free to use, however it takes a lot of time and effort to maintain.
Why not make a donation to keep it running?
Feedback is always welcome. - ©2022 Brendan Davey