Sky Oddities • Auroras & Plasma Phenomena • Child Pillar
Red sprites are brief, jellyfish-like flashes of red light that appear high above powerful thunderstorms. They are part of a family of upper-atmosphere electrical events known as transient luminous events.
This guide explains red sprites, jellyfish sprites, sprite outbreaks and thunderstorm sprites — the strange red flashes that bloom above storm clouds like lightning’s weird upstairs cousins.
TL;DR: Red Sprites
- Red sprites are brief red flashes above thunderstorms.
- They occur high above storm clouds, often in the mesosphere.
- Jellyfish sprites form branching tendrils that can look like glowing red creatures.
- Sprite outbreaks happen when multiple sprites appear during active storm systems.
- Sprites are linked to powerful lightning activity below the storm top.
- This page absorbs old posts about red sprites, jellyfish sprites, sprite outbreaks and thunderstorm sprites.
What Are Red Sprites?
Red sprites are large, short-lived electrical flashes that occur above intense thunderstorms. Unlike ordinary lightning, which usually happens inside clouds or between clouds and the ground, sprites appear far above the storm in the upper atmosphere.
They often appear as:
- red columns
- branching tendrils
- jellyfish-like structures
- clusters of faint red flashes
- large luminous bursts above storm clouds
Because they last only a fraction of a second, most sprites are captured by sensitive cameras rather than seen clearly with the naked eye.
How Do Red Sprites Form?
Red sprites are triggered by powerful lightning activity in thunderstorms. When a strong electrical discharge occurs below, it can disturb the electric field above the storm and briefly excite molecules high in the atmosphere.
The simplified process:
- A powerful thunderstorm builds intense electrical charge.
- A strong lightning discharge occurs inside or below the storm.
- The electric field above the storm changes suddenly.
- Air molecules high above the storm become excited.
- A red sprite flashes into existence for milliseconds.
The red color is mainly linked to emissions from nitrogen molecules in the upper atmosphere.
Jellyfish Sprites
Jellyfish sprites are among the most spectacular sprite forms. They appear with a bright upper region and long branching tendrils extending downward, creating a shape that resembles a glowing red jellyfish floating above the storm.
These structures may include:
- a bright red upper halo
- branching lower tendrils
- multiple sprite columns
- large cluster-like formations
- faint red filaments extending toward the cloud tops
Old Strange Sounds posts about “jellyfish lightning,” “red jellyfish in the sky” or strange red flashes above storms should redirect here.
Sprite Outbreaks
A sprite outbreak occurs when multiple sprites appear above the same thunderstorm system or during the same night. These outbreaks are often associated with powerful storm complexes and frequent lightning activity.
Sprite outbreaks may produce:
- repeated red flashes
- clusters of jellyfish sprites
- large sprite groups above storm systems
- multiple transient luminous events in a short period
- dramatic time-lapse footage of upper-atmosphere flashes
This section is the best 301 sink for old event-based posts about spectacular sprite nights or repeated red sprite displays.
Thunderstorm Sprites
Red sprites are directly linked to thunderstorms. They usually occur above large, electrically active storm systems rather than isolated weak storms.
They are most often associated with:
- intense lightning activity
- large thunderstorm complexes
- mesoscale convective systems
- nighttime storms viewed from a distance
- powerful cloud-to-ground lightning events
To observe sprites, cameras usually need a clear view above the storm rather than directly inside the storm itself.
Red Sprites vs Ordinary Lightning
| Feature | Red Sprites | Ordinary Lightning |
|---|---|---|
| Location | High above thunderstorms | Inside clouds or between cloud and ground |
| Color | Usually red | White, blue-white or violet |
| Duration | Milliseconds | Fractions of a second |
| Shape | Columns, tendrils, jellyfish forms | Branching lightning channels |
What Belongs Elsewhere?
This page is specifically for red sprites and sprite-related events. Keep similar but different phenomena in their own canonical homes:
- Blue jets and giant jets → Blue Jets Explained
- ELVES and expanding light rings → ELVES Upper Atmosphere Flashes Explained
- Ball lightning → Ball Lightning Explained
- Ordinary lightning → Lightning Phenomena silo
- General storm warning clouds → Storm Warning Signs silo
FAQ: Red Sprites
What are red sprites?
Red sprites are brief red electrical flashes that occur high above powerful thunderstorms.
Why are sprites red?
Their red color is mainly caused by excited nitrogen molecules in the upper atmosphere.
What are jellyfish sprites?
Jellyfish sprites are large sprite structures with a bright upper region and branching tendrils that resemble a red jellyfish.
Are red sprites the same as lightning?
Red sprites are related to thunderstorm electricity, but they occur high above storms rather than inside the main lightning channel.
Where should old sprite posts redirect?
Old posts about red sprites, jellyfish sprites, sprite outbreaks and thunderstorm sprites should redirect to this page.
