Alerts:
Space Weather Message Code: WATA20
Serial Number: 1101
Issue Time: 2026 Mar 14 1704 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Mar 15: G1 (Minor) Mar 16: None (Below G1) Mar 17: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: G1 (Minor) geomagnetic storming remains likely on 15 Mar due to ongoing 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: ALTK05
Serial Number: 1978
Issue Time: 2026 Mar 14 1450 UTC
ALERT: Geomagnetic K-index of 5
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
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: ALTK05
Serial Number: 1977
Issue Time: 2026 Mar 14 0900 UTC
ALERT: Geomagnetic K-index of 5
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
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: WARK04
Serial Number: 5285
Issue Time: 2026 Mar 14 0543 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5284
Valid From: 2026 Mar 13 0156 UTC
Now Valid Until: 2026 Mar 14 2359 UTC
Warning Condition: Persistence
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: WARK06
Serial Number: 644
Issue Time: 2026 Mar 14 0528 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 643
Valid From: 2026 Mar 13 2338 UTC
Now Valid Until: 2026 Mar 14 1500 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Space Weather Message Code: ALTK06
Serial Number: 699
Issue Time: 2026 Mar 14 0528 UTC
ALERT: Geomagnetic K-index of 6
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Space Weather Message Code: ALTK05
Serial Number: 1976
Issue Time: 2026 Mar 14 0409 UTC
ALERT: Geomagnetic K-index of 5
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
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: ALTK06
Serial Number: 698
Issue Time: 2026 Mar 14 0201 UTC
ALERT: Geomagnetic K-index of 6
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Space Weather Message Code: ALTK05
Serial Number: 1975
Issue Time: 2026 Mar 14 0054 UTC
ALERT: Geomagnetic K-index of 5
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
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: ALTK06
Serial Number: 697
Issue Time: 2026 Mar 13 2339 UTC
ALERT: Geomagnetic K-index of 6
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Space Weather Message Code: WARK06
Serial Number: 643
Issue Time: 2026 Mar 13 2338 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2026 Mar 13 2338 UTC
Valid To: 2026 Mar 14 0600 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
Space Weather Message Code: ALTK05
Serial Number: 1974
Issue Time: 2026 Mar 13 2317 UTC
ALERT: Geomagnetic K-index of 5
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
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: WARK04
Serial Number: 5284
Issue Time: 2026 Mar 13 2058 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5283
Valid From: 2026 Mar 13 0156 UTC
Now Valid Until: 2026 Mar 14 1500 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.
Solar-terrestrial indices for 13 March follow.
Solar flux 120 and estimated planetary A-index 24.
The estimated planetary K-index at 1800 UTC on 14 March was 3.67.
Space weather for the past 24 hours has been moderate.
Geomagnetic storms reaching the G2 level occurred.
Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are expected.
Geo Magnetic Forecast:
NOAA Ap Index Forecast
Observed Ap 12 Mar 008
Estimated Ap 13 Mar 027
Predicted Ap 14 Mar-16 Mar 020-012-012
NOAA Geomagnetic Activity Probabilities 14 Mar-16 Mar
Active 35/40/40
Minor storm 40/20/20
Moderate storm 15/05/05
Strong-Extreme storm 01/01/01
NOAA Kp index forecast 14 Mar - 16 Mar
Mar 14 Mar 15 Mar 16
00-03UT 4.67 4.00 3.67
03-06UT 4.00 3.33 3.33
06-09UT 4.00 2.00 2.67
09-12UT 3.00 2.00 2.00
12-15UT 2.67 2.67 1.67
15-18UT 2.33 2.00 2.00
18-21UT 2.33 2.33 2.00
21-00UT 3.67 2.67 3.00
Extended Three Day Forecast:
A. NOAA Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 6 (NOAA Scale
G2).
The greatest expected 3 hr Kp for Mar 14-Mar 16 2026 is 6.00 (NOAA Scale
G2).
NOAA Kp index breakdown Mar 14-Mar 16 2026
Mar 14 Mar 15 Mar 16
00-03UT 5.67 (G2) 4.00 3.67
03-06UT 6.00 (G2) 3.33 3.33
06-09UT 4.67 (G1) 2.00 2.67
09-12UT 4.00 2.00 2.00
12-15UT 5.67 (G2) 2.67 1.67
15-18UT 3.00 2.00 2.00
18-21UT 3.00 2.33 2.00
21-00UT 3.00 2.67 3.00
Rationale: G1-G2 (Minor-Moderate) geomagnetic storms are expected over
14 Mar due to influence from a positive polarity coronal hole.
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 14-Mar 16 2026
Mar 14 Mar 15 Mar 16
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 Mar 14-Mar 16 2026
Mar 14 Mar 15 Mar 16
R1-R2 20% 15% 15%
R3 or greater 1% 1% 1%
Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio
blackouts over 14-16 Mar.
Extended Space Weather Discussion:
Solar Activity
.24 hr Summary...
Solar activity was at low levels. Region 4392 (S15E47, Cso/beta)
produced the strongest flare of the period, a C8.1/1N at 13/2023 UTC.
Region 4384 (N10W87, Dai/beta) produced the majority of the C-class
flare activity as it rotated around the NW limb. Decay was observed
among most of the remaining active regions on the visible disk. No
Earth-directed CMEs were observed in available coronagraph imagery.
.Forecast...
Solar activity is expected to be at low levels, with a slight chance for
M-class (R1-R2/Minor-Moderate) flares over 14-16 Mar.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux reached high levels with a peak
flux of 1,170 pfu observed at 13/1725 UTC. The greater than 10 MeV
proton flux was at background levels.
.Forecast...
The greater than 2 MeV electron flux is expected to reach moderate
levels on 14 Mar and 15 Mar, and high levels again on 16 Mar. The
greater than 10 MeV proton flux is expected to continue at background
levels through 16 Mar.
Solar Wind
.24 hr Summary...
Solar wind parameters suggested the continued influence of a positive
polarity CH HSS. Total magnetic field strength varied between 5-13 nT.
The Bz component reached as far south as -10 nT. Solar wind speeds
steadily increased over the past 24 hours, from ~500 km/s to ~700 km/s
by the periods end. Phi angle was predominantly oriented int he
positive solar sector.
.Forecast...
Enhanced solar wind conditions are expected to prevail through 16 Mar
due to positive polarity CH HSS influences.
Geospace
.24 hr Summary...
The geomagnetic field was at quiet to G2 (Moderate) geomagnetic storm
levels due to influence from a positive polarity CH HSS.
.Forecast...
Periods of G1 (Minor) and G2 (Moderate) geomagnetic storming are
expected early on 14 Mar, with active conditions likely on 15-16 Mar,
due to positive polarity CH HSS influences.
27 Day Forecast:
Date | Radio Flux | Planetary A Index | Largest Kp Index
2026 Mar 09 135 12 4
2026 Mar 10 130 10 3
2026 Mar 11 125 8 3
2026 Mar 12 120 5 2
2026 Mar 13 115 5 2
2026 Mar 14 110 20 5
2026 Mar 15 110 15 4
2026 Mar 16 110 10 3
2026 Mar 17 110 10 3
2026 Mar 18 110 10 3
2026 Mar 19 105 12 4
2026 Mar 20 110 15 4
2026 Mar 21 110 35 6
2026 Mar 22 110 24 5
2026 Mar 23 115 15 4
2026 Mar 24 115 15 4
2026 Mar 25 120 18 5
2026 Mar 26 125 10 3
2026 Mar 27 130 8 3
2026 Mar 28 130 8 3
2026 Mar 29 130 5 2
2026 Mar 30 130 14 3
2026 Mar 31 130 6 2
2026 Apr 01 135 5 2
2026 Apr 02 130 10 3
2026 Apr 03 130 20 5
2026 Apr 04 130 25 5
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