Alerts:
Space Weather Message Code: ALTK04
Serial Number: 2540
Issue Time: 2025 Apr 02 0133 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: 4895
Issue Time: 2025 Apr 02 0123 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Apr 02 0123 UTC
Valid To: 2025 Apr 02 0600 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: 1034
Issue Time: 2025 Apr 02 0023 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Apr 02: None (Below G1) Apr 03: None (Below G1) Apr 04: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
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: WARPX1
Serial Number: 599
Issue Time: 2025 Apr 01 2337 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 598
Valid From: 2025 Mar 31 1057 UTC
Now Valid Until: 2025 Apr 02 1200 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
Space Weather Message Code: SUMPX2
Serial Number: 56
Issue Time: 2025 Apr 01 1815 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2025 Apr 01 0205 UTC
Maximum Time: 2025 Apr 01 0425 UTC
End Time: 2025 Apr 01 0910 UTC
Maximum 10MeV Flux: 147 pfu
NOAA Scale: S2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Space Weather Message Code: ALTEF3
Serial Number: 3443
Issue Time: 2025 Apr 01 1012 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3442
Begin Time: 2025 Mar 28 1410 UTC
Yesterday Maximum 2MeV Flux: 2039 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Space Weather Message Code: SUM10R
Serial Number: 863
Issue Time: 2025 Apr 01 0714 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2025 Apr 01 0645 UTC
Maximum Time: 2025 Apr 01 0645 UTC
End Time: 2025 Apr 01 0645 UTC
Duration: 1 minutes
Peak Flux: 190 sfu
Latest Penticton Noon Flux: 172 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Space Weather Message Code: SUMXM5
Serial Number: 287
Issue Time: 2025 Apr 01 0704 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Apr 01 0637 UTC
Maximum Time: 2025 Apr 01 0646 UTC
End Time: 2025 Apr 01 0653 UTC
X-ray Class: M5.6
Optical Class: na
Location: N10E25
NOAA Scale: R2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Space Weather Message Code: ALTXMF
Serial Number: 478
Issue Time: 2025 Apr 01 0651 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Apr 01 0645 UTC
NOAA Scale: R2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Space Weather Message Code: ALTPX2
Serial Number: 77
Issue Time: 2025 Apr 01 0222 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2025 Apr 01 0205 UTC
NOAA Scale: S2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.
Solar-terrestrial indices for 01 April follow.
Solar flux 182 and estimated planetary A-index 5.
The estimated planetary K-index at 0000 UTC on 02 April was 2.00.
Space weather for the past 24 hours has been moderate.
Solar radiation storms reaching the S2 level occurred.
Radio blackouts reaching the R2 level occurred.
Space weather for the next 24 hours is predicted to be moderate.
Solar radiation storms reaching the S1 level are expected.
Radio blackouts reaching the R2 level are expected.
Geo Magnetic Forecast:
NOAA Ap Index Forecast
Observed Ap 31 Mar 006
Estimated Ap 01 Apr 006
Predicted Ap 02 Apr-04 Apr 012-005-018
NOAA Geomagnetic Activity Probabilities 02 Apr-04 Apr
Active 30/05/35
Minor storm 15/01/35
Moderate storm 01/01/15
Strong-Extreme storm 01/01/01
NOAA Kp index forecast 02 Apr - 04 Apr
Apr 02 Apr 03 Apr 04
00-03UT 3.33 1.67 1.00
03-06UT 3.67 1.67 1.00
06-09UT 2.67 1.33 2.33
09-12UT 2.67 1.33 3.67
12-15UT 2.33 1.33 3.33
15-18UT 2.00 1.33 3.33
18-21UT 2.00 1.67 3.67
21-00UT 2.67 1.33 5.00
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 Apr 02-Apr 04 2025 is 5.00 (NOAA Scale
G1).
NOAA Kp index breakdown Apr 02-Apr 04 2025
Apr 02 Apr 03 Apr 04
00-03UT 1.00 1.67 1.00
03-06UT 3.67 1.67 1.00
06-09UT 2.67 1.33 2.33
09-12UT 2.67 1.33 3.67
12-15UT 2.33 1.33 3.33
15-18UT 2.00 1.33 3.33
18-21UT 2.00 1.67 3.67
21-00UT 2.67 1.33 5.00 (G1)
Rationale: G1 (Minor) storm conditions are likely on 04 Apr as a CIR
preceding a recurrent CH HSS is expected to become geoeffective.
B. NOAA Solar Radiation Activity Observation and Forecast
Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was
above S-scale storm level thresholds.
Solar Radiation Storm Forecast for Apr 02-Apr 04 2025
Apr 02 Apr 03 Apr 04
S1 or greater 60% 25% 25%
Rationale: The greater than 10 MeV proton flux is expected to persist
above the S1 (Minor) threshold through midday on 02 Apr. There is a
chance for an S1 (Minor) event on 02-03 Apr due to the flare potential
of Regions 4046 and 4048.
C. NOAA Radio Blackout Activity and Forecast
Radio blackouts reaching the R2 levels were observed over the past 24
hours. The largest was at Apr 01 2025 0646 UTC.
Radio Blackout Forecast for Apr 02-Apr 04 2025
Apr 02 Apr 03 Apr 04
R1-R2 75% 75% 75%
R3 or greater 25% 25% 25%
Rationale: R1-R2 (Minor-Moderate) radio blackouts are expected, with a
chance for R3 (Strong) events, on 02-04 Apr.
Extended Space Weather Discussion:
Solar Activity
.24 hr Summary...
Solar activity reached high levels due to an M5.6 flare at 01/0646 UTC
from Region 4046 (N05E20, Cho/beta-gamma). Associated with this flare
was a 195 sfu tenflare as well as additional discrete radio events.
Region 4048 (S16E40, Ekc/beta-gamma-delta) continued to be the largest
and most complex spot group. It was responsible for an impulsive M2.5
flare at 01/2231 UTC as well as a couple of mid-level C-class flares.
Slight decay occurred in the smaller trailing spots of Region 4046.
Separation was apparent in the intermediate area of Region 4048 while
the leading and intermediate spots began to consolidate.
Other activity included an approximate 10 degree filament eruption
centered near S36W45 at 01/1539 UTC. CME analysis is pending coronagraph
imagery of the event.
.Forecast...
Solar activity is expected to be moderate (R1-R2, Minor-Moderate) with a
chance for X-class flares (R3, Strong) on 02-04 Apr.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux was at moderate to high levels with
a peak flux of 3,240 pfu at 01/1815 UTC. The greater than 10 MeV proton
event that began at 31/1105 UTC, crossed the S2 (Moderate) threshold at
01/0205 UTC, reached a peak of 147 pfu at 01/0425 UTC, and dropped below
S2 levels at 01/0910 UTC.
.Forecast...
The greater than 2 MeV electron flux is expected to continue at moderate
to high levels on 02-04 Apr. The greater than 10 MeV proton flux is
expected to persist above the S1 (Minor) threshold through midday on 02
Apr. There is a chance for an S1 (Minor) event on 02-03 Apr due to the
flare potential of Regions 4046 and 4048.
Solar Wind
.24 hr Summary...
Solar wind parameters became enhanced after 01/1730 UTC, possibly
attributed to the 27 Mar CME. Total field increased to 15 nT while the
Bz component varied between +9/-5 nT. Solar wind ranged from 353-475
km/s. Phi angle was positive.
.Forecast...
Weak transient activity will likely continue through at least the early
part of 02 Apr. Another enhancement is expected early to midday on 04
Apr due to the arrival of a CIR preceding a recurrent, negative polarity
CH HSS.
.24 hr Summary...
The geomagnetic field was quiet.
.Forecast...
Quiet to active levels are expected through 02 Apr due to residual CME
influence. A return to mostly quiet conditions is expected on 03 Apr. By
early to midday on 04 Apr, a CIR preceding a recurrent CH HSS is
expected to become geoeffective causing unsettled to likely G1 (Minor)
storm conditions.
27 Day Forecast:
Date | Radio Flux | Planetary A Index | Largest Kp Index
2025 Mar 31 170 5 2
2025 Apr 01 175 5 2
2025 Apr 02 175 5 2
2025 Apr 03 175 10 3
2025 Apr 04 180 20 5
2025 Apr 05 180 35 6
2025 Apr 06 180 10 3
2025 Apr 07 185 12 3
2025 Apr 08 185 30 5
2025 Apr 09 180 35 6
2025 Apr 10 175 25 5
2025 Apr 11 175 18 4
2025 Apr 12 175 10 3
2025 Apr 13 175 15 4
2025 Apr 14 170 12 3
2025 Apr 15 170 8 3
2025 Apr 16 175 5 2
2025 Apr 17 175 10 3
2025 Apr 18 175 12 3
2025 Apr 19 170 8 3
2025 Apr 20 170 10 3
2025 Apr 21 165 15 4
2025 Apr 22 165 15 4
2025 Apr 23 170 15 4
2025 Apr 24 170 15 4
2025 Apr 25 165 10 3
2025 Apr 26 165 8 3
v4.16b
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