What Does PRESRR Mean in a METAR?
PRESRR means pressure rising rapidly at observation time. It stands for PRESsure Rising Rapidly.
PRESRR in a real report
RMK PRESRR
What it changes for you
Rapidly rising pressure usually means the system has passed. Drier air is moving in behind it.
The improvement is real but not immediate, and it arrives with wind. A cold frontal passage clears the sky. It leaves gusty conditions behind it for hours.
The altimeter point runs the other way from PRESFR. Fly from low pressure into
high on a stale setting and you sit higher than indicated. That is the safe
direction to be wrong, and still worth fixing.
What it does not mean
Rising pressure is not a promise of good weather. It describes the pressure tendency, nothing else. A high can be cold, grey and stable for days.
What it reliably tells you is that the system that just passed is moving away, and that the next few hours are unlikely to bring the sharp changes a falling pressure signals.
Related codes
Decode a report containing this code
Paste a METAR, TAF, PIREP or SIGMET into the WxDecoder decoder. Every group comes back in plain English. The raw code sits beside it, so you can check the decode rather than trust it.
Frequently asked questions
What does PRESRR mean in a METAR?
Pressure rising rapidly. The station pressure rose at a rate of at least 0.06 inches of mercury in the 15 minutes before the observation, usually behind a cold front as drier air moves in.
Is PRESRR good news?
Usually. Rapidly rising pressure most often follows a cold frontal passage, which tends to bring clearing skies and better visibility. It also brings gusty winds behind the front, so it is not uniformly calm.