---
name: a cold snap
slug: a-cold-snap
type: atmospheric event / mood system
status: running
version: "varies. check outside"
released: "Precambrian, probably"
maintainer: jet stream (unresponsive to tickets)
dependencies:
  - pressure gradient
  - arctic air mass
  - someone who just put away their winter coat
license: Public Domain (no one asked for this)
tags:
  - weather
  - seasonal disruption
  - thermal shock
  - harbinger
---

a cold snap

What it actually is

A sudden, temporary drop in temperature that arrives without apology and leaves without explanation.

How it works

A pocket of arctic air descends from the polar vortex, bypasses every reasonable barrier, and installs itself over a region that was, until recently, doing fine. The mechanism is:

the jet stream wobbles. No one fully agrees on why.
Cold air slides south like a drawer being shoved open.
Temperatures fall faster than human adaptation can follow.
People mention it constantly, as if this helps.

The cold snap is not a storm. It produces no drama, no spectacle. It is simply an absence: of warmth, of the life that warmth permits, of the thin social contract that good weather maintains.

Features

Temperatures 10 to 25 degrees below seasonal average
Duration: 2 to 7 days (see: Known bugs)
Kills the insects no one knew they were grateful for
Exposes every gap in window frames, coats, and relationships
Briefly makes firewood feel like currency
Triggers a 340% increase in soup

Known bugs

Duration drift: Cold snaps frequently exceed their forecast window with no versioning or notice.
False termination: A single warm afternoon is sometimes interpreted as the end. It is not the end.
Pipe vulnerability: Infrastructure components rated for "cold" are rarely rated for this cold. See error codes.
Social regression: Users revert to an earlier, more isolated behavioral state. This is working as intended but is filed here anyway.

Error codes

ERR_PIPE_BURST         // threshold exceeded, see plumber
ERR_CAR_WONT_START     // battery never recovered from last winter
ERR_FINGERS_NUMB       // gloves deprecated in October
ERR_SEASONAL_DESPAIR   // no patch available; wait for thaw
WARN_OVERCONFIDENCE    // user said "it's not that cold"

Configuration

cold_snap:
  trigger: polar_vortex_displacement
  duration_days: 2-7       # unreliable
  wind_chill: enabled      # makes stated temperature a lie
  precip_type: flurries    # cosmetic only, adds insult
  public_response: "did you hear how cold it is"

Edge cases

Occurs immediately after the first warm day of spring, maximizing psychological damage.
In cities, cold snaps reveal the infrastructure decisions made by people who no longer live there.
Some users report finding the cold snap clarifying. These users are not wrong, exactly, but they are difficult to be around.

FAQ

Does it mean anything? No. weather is not a message.

Is this related to climate change? The frequency and severity of polar vortex disruptions have a documented relationship with warming. The cold snap is not evidence against this. Please update your priors.

When will it end? When it ends.

drafting spec…