Ovation: South
Weather: TAS
Presets: Presets

Space Weather Message Code: ALTEF3
Serial Number: 3147
Issue Time: 2021 Jun 21 0838 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3146
Begin Time: 2021 Jun 17 0835 UTC
Yesterday Maximum 2MeV Flux: 4546 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

Solar-terrestrial indices for 21 June follow.
Solar flux 79 and estimated planetary A-index 4.
The estimated planetary K-index at 0600 UTC on 22 June was 3.

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 20 Jun 004
Estimated Ap 21 Jun 005
Predicted Ap 22 Jun-24 Jun 005-005-008

NOAA Geomagnetic Activity Probabilities 22 Jun-24 Jun
Active                10/10/25
Minor storm           01/01/05
Moderate storm        01/01/01
Strong-Extreme storm  01/01/01

NOAA Kp index forecast 22 Jun - 24 Jun
             Jun 22    Jun 23    Jun 24
00-03UT        1         2         3
03-06UT        1         2         2
06-09UT        1         2         2
09-12UT        1         1         2
12-15UT        1         1         2
15-18UT        2         1         2
18-21UT        2         1         2
21-00UT        2         1         2

Extended Three Day Forecast:

A. NOAA Geomagnetic Activity Observation and Forecast

The greatest observed 3 hr Kp over the past 24 hours was 1 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Jun 22-Jun 24 2021 is 3 (below NOAA
Scale levels).

NOAA Kp index breakdown Jun 22-Jun 24 2021

            Jun 22     Jun 23     Jun 24
00-03UT        1          2          3
03-06UT        1          2          2
06-09UT        1          2          2
09-12UT        1          1          2
12-15UT        1          1          2
15-18UT        2          1          2
18-21UT        2          1          2
21-00UT        2          1          2

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-16 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Jun 22-Jun 24 2021

              Jun 22  Jun 23  Jun 24
S1 or greater    1%      1%      1%

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 22-Jun 24 2021

              Jun 22        Jun 23        Jun 24
R1-R2            1%            1%            1%
R3 or greater    1%            1%            1%

Rationale: No R1 (Minor) or greater radio blackouts are expected.  No
significant active region flare activity is forecast.

Extended Space Weather Discussion:

Solar Activity

.24 hr Summary...
Solar activity was very low. Region 2833 (N23W38, Hsx/alpha) remained
quiet and stable. No Earth-directed CMEs were observed.

Solar activity is expected to be very low over 22-24 Jun.

Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux reached high levels with a peak
flux of 3,330 pfu observed at 21/1435 UTC. The greater than 10 MeV
proton flux was steady at background levels.

The greater than 2 MeV electron flux is expected to reach high levels on
22-24 Jun, and the greater than 10 MeV proton flux is expected to
persist at background levels throughout the forecast period.

Solar Wind

.24 hr Summary...
Solar wind parameters, measured at DSCOVR, were indicative of a nominal
solar wind regime. Solar wind speed ranged from 325 to 390 km/s, total
field strength averaged 4-7 nT, and Bz was between +/- 3 nT. The phi
angle was predominantly negative.

Solar wind parameters are expected to persist at background levels over
22-23 Jun. On 24 Jun, interaction with the extension from the northern
crown is possible, increasing the chances of weak enhancements in the
solar wind environment.


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

The geomagnetic field is expected to be quiet over 22-23 Jun. By 24 Jun,
unsettled levels are possible due to the interaction with the northern
crown extension.

27 Day Forecast:

Date | Radio Flux | Planetary A Index | Largest Kp Index
2021 Jun 21      78           5          2
2021 Jun 22      78           5          2
2021 Jun 23      78           5          2
2021 Jun 24      78           8          3
2021 Jun 25      78           5          2
2021 Jun 26      76           5          2
2021 Jun 27      76           5          2
2021 Jun 28      76           5          2
2021 Jun 29      78           5          2
2021 Jun 30      78           5          2
2021 Jul 01      78           5          2
2021 Jul 02      78           5          2
2021 Jul 03      78           5          2
2021 Jul 04      75          12          4
2021 Jul 05      75           5          2
2021 Jul 06      75           5          2
2021 Jul 07      75           5          2
2021 Jul 08      78           5          2
2021 Jul 09      78           8          3
2021 Jul 10      78           8          3
2021 Jul 11      78           5          2
2021 Jul 12      75          15          4
2021 Jul 13      75          12          4
2021 Jul 14      75           5          2
2021 Jul 15      75           5          2
2021 Jul 16      75           5          2
2021 Jul 17      75           5          2

  • 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.



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.

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

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 (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)
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).
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 (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. (

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. - ©2020 Brendan Davey