Aurora Forecast

Chart
Reports
Options
More...

Alerts
Geo Mag
3 Day
Discussion
27 Day

Alerts:
none

Solar-terrestrial indices for 23 June follow.
Solar flux 130 and estimated planetary A-index 7.
The estimated planetary K-index at 2100 UTC on 23 June was 2.67.

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

No space weather storms are predicted for the next 24 hours.

Geo Magnetic Forecast:

NOAA Ap Index Forecast
Observed Ap 22 Jun 005
Estimated Ap 23 Jun 007
Predicted Ap 24 Jun-26 Jun 012-015-015

NOAA Geomagnetic Activity Probabilities 24 Jun-26 Jun
Active                35/35/35
Minor storm           25/25/25
Moderate storm        10/10/10
Strong-Extreme storm  01/01/01

NOAA Kp index forecast 24 Jun - 26 Jun
             Jun 24    Jun 25    Jun 26
00-03UT        1.67      3.67      3.33
03-06UT        2.33      4.00      3.00
06-09UT        1.67      2.67      2.00
09-12UT        1.67      2.67      2.00
12-15UT        2.67      1.67      3.00
15-18UT        2.67      1.67      3.33
18-21UT        3.67      2.67      3.33
21-00UT        3.67      3.67      3.33

Extended Three Day Forecast:

A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 23-Jun 25 2026 is 4.00 (below NOAA
Scale levels).

NOAA Kp index breakdown Jun 23-Jun 25 2026

             Jun 23       Jun 24       Jun 25
00-03UT       1.00         1.67         3.67
03-06UT       0.33         2.33         4.00
06-09UT       0.67         1.67         2.67
09-12UT       1.33         1.67         2.67
12-15UT       1.33         2.67         1.67
15-18UT       0.67         2.67         1.67
18-21UT       1.00         3.67         2.67
21-00UT       1.67         3.67         3.67

Rationale: No G1 (Minor) or greater geomagnetic storms are expected.  No
significant transient or recurrent solar wind features are forecast.

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 Jun 23-Jun 25 2026

              Jun 23  Jun 24  Jun 25
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 Jun 23-Jun 25 2026

              Jun 23        Jun 24        Jun 25
R1-R2           30%           35%           35%
R3 or greater    5%            5%            5%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
over 23-25 Jun due primarily to the flare potential of Region 4473.

Extended Space Weather Discussion:

Solar Activity

.24 hr Summary...
Solar activity returned to low levels, with the largest flare of the
period being a C1.5 at 22/0456 UTC from just behind the SE limb. Due to
decreased foreshortening effects, old Region 4473 was deemed to be two
separate groups and was split: Region 4473 (S09E40, Dai/beta-gamma), the
western-most group that produced the M6.8 at 21/1929 UTC, and Region
4475 (S09E51, Cao/beta-gamma), the eastern-most group. Regions 4472
(S14E28, Dao/beta)exhibited minor growth.

Several eruptions were seen over 20-21 Jun associated with activity from
Regions 4472 and 4473, such as the M6.8. Analysis of the coronagraph
imagery suggests each eruption is quite slow (~250 km/s or less);
however modeling of them all together indicates that they may interact
with each other and an anticipated CIR, resulting in possible minor
glancing blows to Earth late on 24 Jun and potentially 28 Jun.

.Forecast...
Solar activity is expected to continue at predominately low levels on
23-25 Jun, with a chance for M-class (R1-R2/Minor-Moderate) flares due
primarily to the flare potential of Region 4473 and a region seen in
Solar Orbiter data about to rotate onto the eastern limb.

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at normal to moderate levels.
The greater than 10 MeV proton flux was at background levels.

.Forecast...
The greater than 2 MeV electron flux is expected to continue at normal
to moderate levels over 23-25 Jun. The greater than 10 MeV proton flux
is expected to persist at background levels through 24 Jun.

Solar Wind

.24 hr Summary...
Solar wind parameters were at background levels this period, with total
magnetic field strength (Bt) at or below 6 nT, no significant periods of
southward Bz, phi largely positive, and solar wind speeds averaging 350
km/s. At 22/1815 UTC, a solar sector boundary crossing produced a bump
in Bt, peaking at 7 nT, but no appreciable change in other solar wind
parameters.

.Forecast...
Background solar wind conditions are expected to prevail through 23 Jun.
Enhanced conditions are expected 24-25 Jun due to the anticipated onset
of negative polarity CH HSS influences and a potential minor glancing
blow from a CME that left the Sun on 20 Jun.

Geospace

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

.Forecast...
The geomagnetic field is expected to continue at mostly quiet levels
through 23 Jun. Periods of active conditions are likely 24-25 Jun due to
the anticipated onset of negative polarity CH HSS and glancing blow
influences.

27 Day Forecast:

Date | Radio Flux | Planetary A Index | Largest Kp Index
2026 Jun 22     120           5          2
2026 Jun 23     120           5          2
2026 Jun 24     120          12          4
2026 Jun 25     125          12          4
2026 Jun 26     130          10          3
2026 Jun 27     130           8          3
2026 Jun 28     130           5          2
2026 Jun 29     132           5          2
2026 Jun 30     135           5          2
2026 Jul 01     145           5          2
2026 Jul 02     138           5          2
2026 Jul 03     140          18          5
2026 Jul 04     135          15          4
2026 Jul 05     130          12          4
2026 Jul 06     130          10          3
2026 Jul 07     130           5          2
2026 Jul 08     125          12          4
2026 Jul 09     126          10          3
2026 Jul 10     120           8          3
2026 Jul 11     122           5          2
2026 Jul 12     118           6          2
2026 Jul 13     116           6          2
2026 Jul 14     115           6          2
2026 Jul 15     120           6          2
2026 Jul 16     125          12          4
2026 Jul 17     125          10          3
2026 Jul 18     122           6          2

Save as 'My Presets'

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.
From Date: (YYYY-MM-DD HH:MM). Leave empty for real-time.

Range: (in hours, WARNING 1 hour = ~10KB of data)
Local Time Zone:
Enable Forecast / Timeshift (Recommended) Enable Fixed Y Axis Values Combine Y Series (B*, Proton, Dyn Preasure & Kp). Show Axis Titles Show Graph Legend (Keys) Enable Auto Update (Range will be reduced to 2 hours) Enable Night Vision Red Theme

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.

AF Index (Experemental) AF Community Activity (Hits)
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.

SWPC Kp (Observation)
SWPC Kp (Prediction) GeoSpace Kp (Prediction) Wing Kp (Legacy : Date < 22/06/18)
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.

Northern Hemisphere (Aurora Borealis) Southern Hemisphere (Aurora Australis)
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.

Mag Bt (Total Strength) Mag Bx (X Axis) Mag By (Y Axis) Mag Bz (Z Axis) Solar Wind Speed Proton Density Dynamic Pressure (Calculated)
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.
Show ACE (When enabled the forecasting / timeshift feature will be disabled)
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.

Primary Secondary Variation (Pri - Sec)
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.

Macquarie Island (Intermagnet / Geo Science Aus) Mawson (Intermagnet / Geo Science Aus) Canberra (Intermagnet / Geo Science Aus) Ruru Obseratory (www.ruruobseratory.org.nz / NZ) Aurora Forecast #1 (Hobart) Aurora Forecast #2 (Hobart) Aurora Forecast #3 (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

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.

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.