Aurora Outlook and Prediction for Your Area
Kp: 3.67 | Bz: -0.66
Space Weather Now
Timing: Tonight · Confidence: Moderate
Webcam
Location unavailable.
Browse other webcams on Windy3-Day Forecast
Aug 30
QuietLow chance of aurora - geomagnetic activity is expected to stay quiet.
40% chance of elevated activity · Kp 2.67 max
Aug 31
QuietLow chance of aurora - geomagnetic activity is expected to stay quiet.
10% chance of elevated activity · Kp 2 max
Sep 01
QuietLow chance of aurora - geomagnetic activity is expected to stay quiet.
10% chance of elevated activity · Kp 1.67 max
Aurora Oval & Satellite & Sun
Interactive Aurora Globe
Satellite View
Sunspots
Current sunspot number: 73
Coronal Mass Ejections
Solar Wind & IMF (GSM)
- Bt
- 6.3 nT
- Bx
- 0.8 nT
- By
- 6.2 nT
- Bz
- -0.66 nT
- Clock Angle θ
- -6°
- Cone Angle φ
- 82.4°
- Speed
- 480 km/s
- Density
- 6.1 p/cc
IMF Detail (GSE) & Source
- Bx
- 0.8 nT
- By
- 5.7 nT
- Bz
- 2.6 nT
- θ Angle
- 24.2°
- φ Angle
- 81.6°
- Satellite
- SOLAR-1
- Data Quality
- Good
- Reading Time
- Aug 30, 9:42 AM UTC
Geomagnetic Indices
- Kp (now)
- 3.67
- Dst
- -21 nT
- HPI
- 6 GW
- Sunspot Number
- 73
Aurora Model
- Ovation Value
- —
- Ovation Label
- Unavailable
- Model Data Time
- —
- Ovation Data
- —
Scores & Ratings
- Aurora Visibility
- — · Unavailable
- Aurora Visibility (w/ Moon)
- — · Unavailable
- Prediction Score
- 19 · Little to None
Sky & Location
- Cloud Cover
- — · Unknown
- Solar Elevation
- 0° · Daytime
- Moon Phase
- Waning Gibbous
- Moon Illumination
- 94%
- Moon Altitude
- -90° · Below Horizon
- Latitude
- —
- Longitude
- —
- Geomagnetic Latitude
- —
- Horizon Threshold
- —
- Overhead Threshold
- —
Prediction Model Inputs
- Bz Persistence (60min)
- -1.6 nT
- Newell Coupling
- 5818
- Dynamic Pressure
- 2.4 nPa
- Storm Watch (CME)
- —
- Watch Predicted Kp
- —
Timing & Confidence
- Timing
- Tonight
- Confidence
- Moderate
- L1 Delay
- ~3125 min
- Best Viewing Window
- —
3-Day Kp Forecast
| UTC | Aug 30 | Aug 31 | Sep 01 |
|---|---|---|---|
| 12:00 AM–3:00 AM | 2.67 | 1.67 | 1.67 |
| 3:00 AM–6:00 AM | 3.67 | 2 | 1.33 |
| 6:00 AM–9:00 AM | 3.67 | 1.67 | 1.67 |
| 9:00 AM–12:00 PM | 2.67 | 1.67 | 1.33 |
| 12:00 PM–3:00 PM | 1.67 | 1 | 1.33 |
| 3:00 PM–6:00 PM | 1 | 1 | 1.33 |
| 6:00 PM–9:00 PM | 1.67 | 0.67 | 1.33 |
| 9:00 PM–12:00 AM | 2.67 | 2 | 1.67 |
| Max | 3.67 | 2 | 1.67 |
| Ap Index | 12 | 5 | 5 |
Storm Probability
| Level | Aug 30 | Aug 31 | Sep 01 |
|---|---|---|---|
| Active | 40% | 10% | 10% |
| Minor storm | 25% | 1% | 1% |
| Moderate storm | 10% | 1% | 1% |
| Strong-Extreme storm | 1% | 1% | 1% |
Planetary K-index
Interplanetary Magnetic Field Bz-0.7 nT now
Southward (negative) Bz favors aurora. Observed data only, no forecast product exists for Bz.
Total IMF Field Bt6.3 nT now
Total interplanetary magnetic field strength - the ceiling on how negative Bz can go. A rising Bt alongside a still-fluctuating Bz often leads a stronger southward turn. Observed data only, no forecast product exists for Bt.
Storm Trend26 now
Prediction score (0-100) over the last 24 hours, logged every 5 minutes. Red above 70, yellow 50-70, teal below 50 - same thresholds used everywhere else on this page. Dashed line is the overall trend.
Dst History-21 nT now
Kyoto Dst geomagnetic storm index over the last 24 hours. Negative = ring-current energy stored = an active storm, not just predicted. Red below −50nT, yellow −20 to −50nT, teal above −20nT.
Solar Wind Speed & Pressure
Each line is scaled independently to its own 24h range (different units) - watch the shape, not a shared axis. A rising speed line or a pressure spike can signal an incoming stream or shock before Bz/Dst move.
Nerd Mode: See what’s really driving the score. Live solar wind, Bz, Kp, Dst, CME timing, and more. Data comes from NOAA SWPC and the Kyoto WDC, with a few metrics calculated here from the raw data. Live data refreshes every minute; trend charts every five.
Related Northern Lights Pages
Browse all prediction cities →
