EXIT 42 · Regional · NOAA / NCEP
HRRR subhourly
Quarter-hour guidance used to investigate brief warming, cooling and transition timing that hourly samples can miss. It is not a separate independent model.
What to inspect
Follow successive runs for the same target date. Compare error, bias and interval coverage on shared stations and dates. A sharper forecast is useful only when its uncertainty remains reliable.
See recap for available station/day coverage
Updates and availability
Hourly cycles; delivery follows source arrival
No issue timestamp is exposed by this directory for this product. The linked guidance page carries its own coverage and run information.
Station and neighborhood context
Use the station page to compare diurnal evolution, nearby observations and weather regimes. The linked page contains all available sources; availability varies by station.
How to read the record
Raw models, corrected station products and downscaled grids forecast different things. Market recap shows its decision cutoff, settlement basis and coverage. Missing forecasts are unavailable, never zero. Inclusion in this directory or recap does not imply inclusion in a trading blend.
Existing model verification and cycle archive ↗Related exits
EXIT 10 ↗RegionalHRRR
Rapid-refresh regional guidance for the evolving temperature curve, clouds and convection. Short-range and extended cycles provide different coverage.
NOAA / NCEPExplore guidance and its verification recordEXIT 20 ↗MOSHRRR-MOS
Station equations correct HRRR forecasts using past observed errors. Daily extrema target the local standard day; issued guidance is evaluated separately from the raw model.
Weather TraderIssue record: 2026-10-18T02:00:30ZEXIT 27 ↗Hourly MOSHRRR-MOS hourly
An hourly-cycle station product using the forecast and observations available to the issue. Same-day highs and lows can contain observations already recorded.
Weather TraderIssue record: 2026-10-18T02:36:01Z