Aurora Forecast and Prediction for Your Area
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Kp: 2.67 | Bz: 1.26
Space Weather Now
Timing: Tonight · Signal Strength: High
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Oct 13
Global: NOAA has issued a watch for this night (see below) - moderate planetary activity, aurora across the high-latitude zone.
CME Watch: G1 (Minor) · Kp 5 expected
35% chance of elevated activity · Kp 4 max
Oct 14
Global: Moderate planetary activity expected - aurora across the high-latitude zone, and lower with a good substorm.
35% chance of elevated activity · Kp 3.67 max
Oct 15
Global: Quiet planetary conditions expected - aurora mostly confined to the far north.
20% chance of elevated activity · Kp 2.33 max
Aurora Oval & Satellite & Sun
Interactive Aurora Globe
Satellite View
Sunspots
Current sunspot number: 93
Coronal Mass Ejections
Aurora Photography by Todd Salat
Original prints from Todd Salat's collection.
Whirled View
Turnagain Arm · 2015
White Satin
Kenai Mountains · 2017
AK Caboose
Portage Depot, Alaska · 2021
Solar Wind & IMF (GSM)
- Bt
- 9.1 nT
- Bx
- 1.8 nT
- By
- -8.8 nT
- Bz
- 1.26 nT
- Clock Angle θ
- 7.9°
- Cone Angle φ
- 281.3°
- Speed
- 497 km/s
- Density
- 10.9 p/cc
IMF Detail (GSE) & Source
- Bx
- 1.8 nT
- By
- -8.2 nT
- Bz
- -3.5 nT
- θ Angle
- -22.6°
- φ Angle
- 282.1°
- Satellite
- SOLAR-1
- Data Quality
- Good
- Reading Time
- Oct 13, 11:22 AM UTC
Geomagnetic Indices
- Kp (now)
- 2.67
- Dst
- -9 nT
- HPI
- 13 GW
- Sunspot Number
- 93
Aurora Model
- Ovation Value
- —
- Ovation Label
- Unavailable
- Model Data Time
- —
- Ovation Data
- —
Scores & Ratings
- Aurora Visibility
- — · Unavailable
- Aurora Visibility (w/ Moon)
- — · Unavailable
- Prediction Score
- 24 · Little to None
Sky & Location
- Cloud Cover
- — · Unknown
- Clouds, Next Dark Window
- —
- Aurora Visibility Tonight
- — (no dark-window cloud forecast)
- Solar Elevation
- 0° · Daytime
- Moon Phase
- Waxing Crescent
- Moon Illumination
- 5%
- Moon Altitude
- -90° · Below Horizon
- Latitude
- —
- Longitude
- —
- Geomagnetic Latitude
- —
- Horizon Threshold
- —
- Overhead Threshold
- —
Prediction Model Inputs
- Bz Persistence (60min)
- 3.3 nT
- Newell Coupling
- 5554
- Latitude Gate
- 1.00 now · 1.00 tonight
- Dynamic Pressure
- 4.5 nPa
- Storm Watch (CME)
- ~0h · G1 (Minor)
- Watch Predicted Kp
- 5
Timing & Signal Strength
- Timing
- Tonight
- Signal Strength
- High
- L1 Delay
- ~50 min
- Magnetic Midnight
- —
- Best Viewing Window
- —
3-Day Kp Forecast
| UTC | Oct 13 | Oct 14 | Oct 15 |
|---|---|---|---|
| 12:00 AM–3:00 AM | 4 | 3.67 | 2.67 |
| 3:00 AM–6:00 AM | 4.67 | 4 | 3.33 |
| 6:00 AM–9:00 AM | 5 | 2.67 | 3 |
| 9:00 AM–12:00 PM | 4.33 | 3.67 | 2.33 |
| 12:00 PM–3:00 PM | 4 | 3.67 | 1.67 |
| 3:00 PM–6:00 PM | 3.67 | 3.67 | 1 |
| 6:00 PM–9:00 PM | 3.33 | 3.33 | 1.33 |
| 9:00 PM–12:00 AM | 2.67 | 2.67 | 2.33 |
| Max | 5 | 4 | 3.33 |
| Ap Index | 28 | 20 | 10 |
Storm Probability
| Level | Oct 13 | Oct 14 | Oct 15 |
|---|---|---|---|
| Active | 35% | 35% | 20% |
| Minor storm | 35% | 25% | 5% |
| Moderate storm | 15% | 10% | 1% |
| Strong-Extreme storm | 5% | 1% | 1% |
Planetary K-index
Interplanetary Magnetic Field Bz-0 nT now
Southward (negative) Bz favors aurora. Observed data only, no forecast product exists for Bz.
Total IMF Field Bt9.3 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.
Global Storm Trend26 global now
Global (hemisphere-wide, not this city) prediction score over the last 24 hours, logged every 5 minutes - may differ from the Prediction ring above, which is specific to this location and time of night. 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-9 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.
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