Aurora Forecast and Prediction for Delta Junction, Alaska
Kp: 0.67 | Bz: 1.79
Best Viewing Window: 2:25 AM – 7:40 AM AKDT (5h 15m) · peak hours typically 12:45 AM – 4:45 AM
Best Viewing Window:
2:25 AM – 7:40 AM AKDT Space Weather Now
Timing: Now · Signal Strength: High
3-Day Forecast for Delta Junction, Alaska
Oct 12
Kp 4.3 is enough to bring the aurora high overhead at Delta Junction, not just low on the northern horizon.
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
Best time to look up: 1:00 AM–4:00 AM AKDT
35% chance of elevated activity · Kp 4.33 during viewing window, up to Kp 5 depending on CME timing
Oct 13
Kp 4 is enough to bring the aurora high overhead at Delta Junction, not just low on the northern horizon.
Global: Moderate planetary activity expected - aurora across the high-latitude zone, and lower with a good substorm.
Best time to look up: 7:00 PM–10:00 PM AKDT
35% chance of elevated activity · Kp 4 during viewing window
Oct 14
Kp 3.3 is enough to bring the aurora high overhead at Delta Junction, not just low on the northern horizon.
Global: Moderate planetary activity expected - aurora across the high-latitude zone, and lower with a good substorm.
Best time to look up: 7:00 PM–10:00 PM AKDT
20% chance of elevated activity · Kp 3.33 during viewing window
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.
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Solar Wind & IMF (GSM)
- Bt
- 9.7 nT
- Bx
- 3.3 nT
- By
- -8.9 nT
- Bz
- 1.79 nT
- Clock Angle θ
- 10.7°
- Cone Angle φ
- 290.6°
- Speed
- 488 km/s
- Density
- 9.7 p/cc
IMF Detail (GSE) & Source
- Bx
- 3.3 nT
- By
- -8.5 nT
- Bz
- -3.1 nT
- θ Angle
- -18.6°
- φ Angle
- 291.5°
- Satellite
- SOLAR-1
- Data Quality
- Good
- Reading Time
- Oct 13, 2:17 AM AKDT
Geomagnetic Indices
- Kp (now)
- 0.67
- Dst
- -12 nT
- HPI
- 12 GW
- Sunspot Number
- 93
Aurora Model
- Ovation Value
- 19
- Ovation Label
- Weak
- Model Data Time
- Oct 13, 3:05 AM AKDT
- Ovation Data
- Live
Scores & Ratings
- Aurora Visibility
- 5 · Poor
- Aurora Visibility (w/ Moon)
- 5 · Poor
- Prediction Score
- 23 · Little to None
Sky & Location
- Cloud Cover
- 35% · Few Clouds
- Clouds, Next Dark Window
- 38% · Few Clouds · ×0.85
- Aurora Visibility Tonight
- 30 · Fair (Outlook Tonight 35 × cloud 0.85)
- Solar Elevation
- -32.9° · Dark Night
- Moon Phase
- Waxing Crescent
- Moon Illumination
- 5%
- Moon Altitude
- -48° · Below Horizon
- Latitude
- 64.03778
- Longitude
- -145.73222
- Geomagnetic Latitude
- 65.2°
- Horizon Threshold
- Kp 1
- Overhead Threshold
- Kp 2
Prediction Model Inputs
- Bz Persistence (60min)
- -0.2 nT
- Newell Coupling
- 5174
- Latitude Gate
- 1.00 now · 1.00 tonight (horizon Kp 0)
- Dynamic Pressure
- 3.9 nPa
- Storm Watch (CME)
- ~0h · G1 (Minor)
- Watch Predicted Kp
- 5
Timing & Signal Strength
- Timing
- Now
- Signal Strength
- High
- L1 Delay
- ~51 min
- Magnetic Midnight
- 2:45 AM (peak hours 12:45 AM – 4:45 AM)
- Best Viewing Window
- 2:25 AM – 7:40 AM AKDT (5h 15m)
3-Day Kp Forecast
| AKDT | Oct 13 | Oct 14 | Oct 15 |
|---|---|---|---|
| 4:00 PM–7:00 PM | 4 | 3.67 | 2.67 |
| 7:00 PM–10:00 PM | 4.67 | 4 | 3.33 |
| 10:00 PM–1:00 AM | 5 | 2.67 | 3 |
| 1:00 AM–4:00 AM | 4.33 | 3.67 | 2.33 |
| 4:00 AM–7:00 AM | 4 | 3.67 | 1.67 |
| 7:00 AM–10:00 AM | 3.67 | 3.67 | 1 |
| 10:00 AM–1:00 PM | 3.33 | 3.33 | 1.33 |
| 1:00 PM–4:00 PM | 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 Bz0.8 nT now
Southward (negative) Bz favors aurora. Observed data only, no forecast product exists for Bz.
Total IMF Field Bt9.7 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 Trend24 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-12 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.
Aurora Forecasts for Nearby Cities
Checking conditions somewhere else tonight? These are the closest cities with their own northern lights prediction.
- North Pole 69 mi
- Fairbanks 81 mi
- College 84 mi
- Tok 97 mi
- Healy 99 mi
- Nenana 107 mi
- Glennallen 133 mi
- Fort Yukon 175 mi
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