Alerts:
Space Weather Message Code: ALTEF3
Serial Number: 3624
Issue Time: 2026 Feb 10 1212 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3623
Begin Time: 2026 Feb 07 1340 UTC
Yesterday Maximum 2MeV Flux: 1764 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Solar-terrestrial indices for 10 February follow.
Solar flux 142 and estimated planetary A-index 7.
The estimated planetary K-index at 2100 UTC on 10 February was 2.67.
No space weather storms were observed for the past 24 hours.
Space weather for the next 24 hours is predicted to be moderate.
Radio blackouts reaching the R2 level are likely.
Geo Magnetic Forecast:
NOAA Ap Index Forecast
Observed Ap 08 Feb 008
Estimated Ap 09 Feb 009
Predicted Ap 10 Feb-12 Feb 008-005-005
NOAA Geomagnetic Activity Probabilities 10 Feb-12 Feb
Active 20/10/10
Minor storm 05/05/05
Moderate storm 01/01/01
Strong-Extreme storm 01/01/01
NOAA Kp index forecast 10 Feb - 12 Feb
Feb 10 Feb 11 Feb 12
00-03UT 2.67 1.67 1.67
03-06UT 2.67 1.67 2.00
06-09UT 2.67 1.67 1.67
09-12UT 1.67 1.00 1.33
12-15UT 1.67 1.33 0.67
15-18UT 0.67 1.33 1.00
18-21UT 1.67 1.00 1.67
21-00UT 2.00 1.67 1.67
Extended Three Day Forecast:
A. NOAA Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Feb 10-Feb 12 2026 is 2.67 (below NOAA
Scale levels).
NOAA Kp index breakdown Feb 10-Feb 12 2026
Feb 10 Feb 11 Feb 12
00-03UT 1.00 1.67 1.67
03-06UT 0.67 1.67 2.00
06-09UT 1.00 1.67 1.67
09-12UT 2.67 1.00 1.33
12-15UT 1.67 1.33 0.67
15-18UT 0.67 1.33 1.00
18-21UT 1.67 1.00 1.67
21-00UT 2.00 1.67 1.67
Rationale: No G1 (Minor) or greater geomagnetic storms are expected over
10-12 Feb.
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 Feb 10-Feb 12 2026
Feb 10 Feb 11 Feb 12
S1 or greater 25% 25% 25%
Rationale: There is a chance for S1 (Minor) or greater solar radiation
storms on 10-12 Feb due to the flare potential and location of Region
4366.
C. NOAA Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
Radio Blackout Forecast for Feb 10-Feb 12 2026
Feb 10 Feb 11 Feb 12
R1-R2 65% 65% 65%
R3 or greater 25% 25% 25%
Rationale: R1-R2 (Minor-Moderate) radio blackouts are likely, with a
chance for R3 (Strong) or greater events, on 10-12 Feb.
Extended Space Weather Discussion:
Solar Activity
.24 hr Summary...
Solar activity was at low levels. The strongest event of the period was
an impulsive C9.2/Sf flare at 09/2302 UTC from Region 4374 (N11E65,
Cko/beta). Region 4366 (N14W78, Fkc/beta-gamma-delta) produced four
C-class flares and remains the most magnetically complex region on the
visible disk. While Region 4371 (S23W29, Hsx/alpha) decreased in extent,
it produced three C-class flares during the period. The other four
numbered regions on the disk remained relatively stable. No
Earth-directed CMEs were detected in available coronagraph imagery.
.Forecast...
M-class flares (R1-R2/Minor-Moderate) are likely (65%), with a chance
(25%)for X-class flares (R3/Strong or greater), over 10-12 Feb,
primarily due to the eruptive potential of Region 4366.
Energetic Particle
.24 hr Summary...
The greater than 2 MeV electron flux reached high levels with a maximum
flux of 1,764 pfu observed at 09/1500 UTC. The greater than 10 MeV
proton flux remained at background levels throughout the period.
.Forecast...
The greater than 2 MeV electron flux is expected to reach high levels on
10-12 Feb. There is a chance (25%) for the greater than 10 MeV proton
flux to reach S1 (Minor) levels over 10-12 Feb due to the eruptive
potential and location of Region 4366.
Solar Wind
.24 hr Summary...
Solar wind parameters were mildly disturbed during this period under
negative polarity CH HSS influences and possible glancing impact of the
CME that left the Sun on 03 Feb. Solar wind speeds followed a declining
trend for early in the period, decreasing from about 450 km/s to a
minimum near 375 km/s, before rising steadily back to 450 km/s. Total
magnetic field (Bt) strength remained generally steady around 9 nT. The
North-South component of the magnetic field (Bz) remained primarily
northward throughout the period, but reached a maximum southward
deviation of -7 nT. The Phi angle was predominantly negative.
.Forecast...
The solar wind environment near Earth is likely to remain mildly
disturbed for the remainder of 10 Feb, with the influences caused by the
negative polarity CH HSS and glancing CME waning down. Undisturbed solar
wind conditions are likely on Feb 11-12 as there is no transient arrival
anticipated.
Geospace
.24 hr Summary...
The geomagnetic field was quiet to unsettled.
.Forecast...
The geomagnetic activity is expected to remain at quiet to unsettled
levels for the remainder of 10 Feb as negative polarity CH HSS
influences and any CME enhancements diminish throughout the day. Mostly
quiet conditions are expected to prevail on 11-12 Feb.
27 Day Forecast:
Date | Radio Flux | Planetary A Index | Largest Kp Index
2026 Feb 09 165 15 4
2026 Feb 10 160 8 3
2026 Feb 11 155 5 2
2026 Feb 12 150 5 2
2026 Feb 13 145 5 2
2026 Feb 14 140 5 2
2026 Feb 15 150 5 2
2026 Feb 16 160 15 4
2026 Feb 17 170 15 4
2026 Feb 18 180 15 4
2026 Feb 19 175 15 4
2026 Feb 20 170 15 4
2026 Feb 21 160 15 4
2026 Feb 22 150 8 3
2026 Feb 23 140 8 3
2026 Feb 24 135 20 5
2026 Feb 25 130 20 5
2026 Feb 26 130 8 3
2026 Feb 27 140 5 2
2026 Feb 28 160 5 2
2026 Mar 01 165 5 2
2026 Mar 02 170 5 2
2026 Mar 03 170 5 2
2026 Mar 04 170 5 2
2026 Mar 05 165 15 4
2026 Mar 06 165 15 4
2026 Mar 07 165 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.
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Added GOES Difference (#1 - #2)
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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)
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Updated A few settings for better visilation. (28/2/18)
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Added Macquarie Island MAG feed.
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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)
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