Aurora Borealis in Walnut Grove
Canada · 49.16°, -122.64° · geomagnetic 54.6° · needs Kp 7
Tonight in Walnut Grove
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Walnut Grove needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.7. Short of the threshold, which is what most nights look like here.
Updated 2026-08-02 20:20 UTC
The next 30 nights in Walnut Grove
Every night to come, scored the same way as tonight. The best of the open week is Sunday 2 Aug at 1%. Not one of the seven reaches the Kp 7 that Walnut Grove needs, which is normal rather than unlucky — it averages 3.1 viable nights a year. The 23 nights past the seven-day window move with the 27-day solar rotation and are updated daily in the app.
Nights 8–30 unlock in the Revon app
See all 30 nights for Walnut Grove
Revon aurora model over the NOAA Kp forecast and 27-day outlook
How often the aurora borealis reaches Walnut Grove
3.1 nights a year, averaged across 10.0 years of records
| Storm level | Nights / year |
|---|---|
| Kp 4 | 83.4 |
| Kp 5 | 28.7 |
| Kp 6 | 9.3 |
| Kp 7 | 3.2 |
| Kp 8 | 1.2 |
NOAA planetary Kp, 2016-04-02 to 2026-03-30
Wait for an alert; do not book a week
At Kp 7, Walnut Grove needs a severe geomagnetic storm before anything shows above the northern horizon. Storms that size arrive a handful of times per solar cycle and announce themselves a day or two ahead. Watching for one beats picking dates and hoping.
Hours of true darkness, month by month
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 11.6 | 10.3 | 8.7 | 6.3 | 3.5 | 0.0 | 2.1 | 5.3 | 7.9 | 9.8 | 11.3 | 11.9 |
Solar declination and hour angle at −18°
Nothing to see from June
Through those months the sun never falls more than 18° below the Walnut Grove horizon, so the sky never darkens fully. Plan around the darker half of the year.
Getting clear of the light
Walnut Grove is small enough that its own lights are a minor problem — the centre reads Bortle 6. Walking to the edge of town is often escape enough.
- 14 km north-east — around Maple Ridge → Bortle 5
- 30 km east-north-east — around Area F (McConnell Creek/Hatzic Prairie) → Bortle 4
Falchi 2016 World Atlas (DOI: 10.5880/GFZ.1.4.2016.001)
The months that actually deliver
Counting only nights that were both stormy enough and dark enough, May, September and August came out ahead in Walnut Grove. That is storm season and darkness overlapping — the equinoxes tend to be geomagnetically active, and the nights are already long by then.
Darkest nights of the coming year
A bright moon washes out a weak display as effectively as street lighting. These new moons fall inside the Walnut Grove viewing season.
- 13 Aug 2026
- 11 Sep 2026
- 11 Oct 2026
- 09 Nov 2026
- 09 Dec 2026
- 07 Jan 2027
- 06 Feb 2027
Where it is close to a certainty
If you would rather plan a trip than wait for a storm, the nearest place with genuinely frequent aurora is Juneau, 1,274 km north-north-west in United States.
| Walnut Grove | Juneau | |
|---|---|---|
| Kp needed | 7 | 5 |
| Nights per year | 3.1 | 28.7 |
| Geomagnetic latitude | 54.6° | 61.6° |
Confirmed reports from this area
58 verified sightings were logged within 300 km of Walnut Grove between 2015-01-01 and 2016-12-31. Rare is not the same as impossible.
Aurorasaurus verified positive reports
Where the horizon opens up near Walnut Grove
The display sits low on the northern horizon, so what beats a better forecast is open ground facing that way. Height gets you above the town glow; water gives you an unbroken skyline. These are within a short drive of Walnut Grove.
- Mann Point — headland4.4 km north-north-west
- Tavistock Point — headland4.6 km north-east
- McMillan Island — island5.2 km east-north-east
- Barnston Island — island6.0 km north-west
- Cook Slough — lake8.8 km north-north-west
- Tulley Slough — lake8.8 km north-north-west
Places from GeoNames (CC BY 4.0)
Where to stay
Anywhere on the outskirts of Walnut Grove will do; what matters is being able to step outside and check the sky without a drive first.
- Sandman Hotel Langley 2.7 km from the centre
- Best Western Maple Ridge 6.0 km from the centre
- Maple Ridge Travelodge 6.0 km from the centre
- Quality Inn Maple Ridge 6.0 km from the centre
- Ramada Inn Pitt Meadows 8.2 km from the centre
- Holiday Inn Express & Suites Surrey 10.8 km from the centre
Places from GeoNames (CC BY 4.0) — confirm before booking
The last nights it was visible here
Nights in the last decade when the storm was strong enough for Walnut Grove and the sky was dark enough to show it.
| Date | Peak |
|---|---|
| 2026-03-20 | Kp 7.0 |
| 2026-01-20 | Kp 7.67 |
| 2026-01-19 | Kp 8.67 |
| 2025-11-12 | Kp 7.33 |
| 2025-11-11 | Kp 8.67 |
NOAA planetary Kp
Know when it is worth going outside
Revon watches the Walnut Grove forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Common questions about the aurora borealis in Walnut Grove
Can you see the aurora borealis from Walnut Grove?
Yes. On the last 10.0 years of NOAA Kp records, Walnut Grove had about 3.1 nights a year when the storm was strong enough and the sky dark enough at the same time.
What Kp index do you need to see the aurora borealis in Walnut Grove?
Kp 7. Walnut Grove sits at geomagnetic latitude 54.6°, and the auroral oval only reaches that far from the pole once activity hits Kp 7. Storms that size occur about 3.2 nights a year.
When is the best time of year to see the aurora borealis in Walnut Grove?
May, September and August. Those months scored highest once both conditions are counted together: geomagnetic activity and enough hours of real darkness. From June the sky over Walnut Grove never gets fully dark, so nothing is visible however strong the storm.
Where can you escape the light pollution near Walnut Grove?
The centre of Walnut Grove reads Bortle 6. The nearest sky at Bortle 4 is about 30 km east-north-east around Area F (McConnell Creek/Hatzic Prairie). On a marginal night that drive matters more than the forecast does.
Where is the nearest place to Walnut Grove with reliable aurora borealis?
Juneau, United States — 1,274 km north-north-west. It needs only Kp 5 and averages 28.7 viable nights a year against 3.1 in Walnut Grove.
Nearby towns
Forecasts for places within reach of Walnut Grove.