Raw model output on the native 0.25° grid — no MOS, no bias correction, no post-processing. Scores understate operational forecast quality. Read the fairness statement →

CastCheck methodology v0.2 · data through 2026-08-30

Aurora (IFS init) (aurora_ifs)

source aiwp · product AURO · initial conditions from IFS · steps every 6 h to 240 h · initializations 0, 12 UTC.

Scores use the latest model version segment, AURO_v100, starting 2026-08-28. Earlier days ran a different version of the model and are excluded rather than silently pooled into the same average.

These pages are always bilinear interpolation, the headline method. The nearest-node variant, and every other window/initialization/interpolation/variable combination, is published on each permanent link below — follow any number.

Daily maximum temperature — MAE °F by station

the last 90 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows this station across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL 6.57-6.57 · n=2 7.61-7.61 · n=1 KATL MAE by lead day 1 to 9, tmax
KAUS 8.13-8.13 · n=2 7.25-7.25 · n=1 KAUS MAE by lead day 1 to 9, tmax
KBOS 3.24-3.24 · n=2 5.19-5.19 · n=1 KBOS MAE by lead day 1 to 9, tmax
KDCA 7.36-7.36 · n=2 7.78-7.78 · n=1 KDCA MAE by lead day 1 to 9, tmax
KDEN 5.59-5.59 · n=2 3.76-3.76 · n=1 KDEN MAE by lead day 1 to 9, tmax
KDFW 6.72-6.72 · n=2 6.20-6.20 · n=1 KDFW MAE by lead day 1 to 9, tmax
KEWR 4.07-4.07 · n=2 1.92-1.92 · n=1 KEWR MAE by lead day 1 to 9, tmax
KIAH 6.49-6.49 · n=2 6.68-6.68 · n=1 KIAH MAE by lead day 1 to 9, tmax
KLAS 3.83-3.83 · n=2 3.42-3.42 · n=1 KLAS MAE by lead day 1 to 9, tmax
KLAX 5.89-5.89 · n=2 6.03-6.03 · n=1 KLAX MAE by lead day 1 to 9, tmax
KMIA 7.01-7.01 · n=2 6.81-6.81 · n=1 KMIA MAE by lead day 1 to 9, tmax
KMSP 7.61-7.61 · n=2 8.47-8.47 · n=1 KMSP MAE by lead day 1 to 9, tmax
KMSY 7.03-7.03 · n=2 3.89-3.89 · n=1 KMSY MAE by lead day 1 to 9, tmax
KNYC 1.03-1.03 · n=2 0.47+0.47 · n=1 KNYC MAE by lead day 1 to 9, tmax
KOKC 7.96-7.96 · n=2 8.44-8.44 · n=1 KOKC MAE by lead day 1 to 9, tmax
KORD 1.79-1.79 · n=2 1.83-1.83 · n=1 KORD MAE by lead day 1 to 9, tmax
KPHL 5.17-5.17 · n=2 5.26-5.26 · n=1 KPHL MAE by lead day 1 to 9, tmax
KPHX 7.75-7.75 · n=2 9.19-9.19 · n=1 KPHX MAE by lead day 1 to 9, tmax
KSAN 5.13-5.13 · n=2 3.64-3.64 · n=1 KSAN MAE by lead day 1 to 9, tmax
KSAT 6.57-6.57 · n=2 5.48-5.48 · n=1 KSAT MAE by lead day 1 to 9, tmax
KSEA 4.04-4.04 · n=2 2.22-2.22 · n=1 KSEA MAE by lead day 1 to 9, tmax
KSFO 8.56-8.56 · n=2 8.34-8.34 · n=1 KSFO MAE by lead day 1 to 9, tmax
KTTN 1.65-1.65 · n=2 1.04-1.04 · n=1 KTTN MAE by lead day 1 to 9, tmax

Up to 2 of the scored days in this table carry a QC flag on the observation (a CLI value that disagreed with the hourly observations, or a fallback source). They are kept in the scores and counted here rather than dropped — see methodology.

+ model too warm · − model too cold · bias interval includes zero · ★ lowest MAE · = not distinguishable from the leader · ▼ significantly worse · n < 30 greyed and unranked · CI is a 95 % moving-block bootstrap interval.

Daily minimum temperature — MAE °F by station

the last 90 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows this station across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL 1.73-1.73 · n=2 1.20-1.20 · n=1 KATL MAE by lead day 1 to 9, tmin
KAUS 4.99+4.99 · n=2 4.35+4.35 · n=1 KAUS MAE by lead day 1 to 9, tmin
KBOS 3.19-3.19 · n=2 5.79-5.79 · n=1 KBOS MAE by lead day 1 to 9, tmin
KDCA 2.66-2.66 · n=2 3.45-3.45 · n=1 KDCA MAE by lead day 1 to 9, tmin
KDEN 3.99+3.99 · n=2 2.28+2.28 · n=1 KDEN MAE by lead day 1 to 9, tmin
KDFW 0.45+0.27 · n=2 0.01-0.01 · n=1 KDFW MAE by lead day 1 to 9, tmin
KEWR 0.53+0.53 · n=2 0.38+0.38 · n=1 KEWR MAE by lead day 1 to 9, tmin
KIAH 0.43+0.43 · n=2 0.68+0.68 · n=1 KIAH MAE by lead day 1 to 9, tmin
KLAS 5.87-5.87 · n=2 7.08-7.08 · n=1 KLAS MAE by lead day 1 to 9, tmin
KLAX 1.41-1.41 · n=2 2.65-2.65 · n=1 KLAX MAE by lead day 1 to 9, tmin
KMIA 3.13+1.28 · n=2 1.56-1.56 · n=1 KMIA MAE by lead day 1 to 9, tmin
KMSP 1.02-0.77 · n=2 1.74-1.74 · n=1 KMSP MAE by lead day 1 to 9, tmin
KMSY 2.57-0.96 · n=2 3.73-3.73 · n=1 KMSY MAE by lead day 1 to 9, tmin
KNYC 0.77-0.59 · n=2 0.90-0.90 · n=1 KNYC MAE by lead day 1 to 9, tmin
KOKC 5.17+5.17 · n=2 3.97+3.97 · n=1 KOKC MAE by lead day 1 to 9, tmin
KORD 0.99+0.99 · n=2 0.39+0.39 · n=1 KORD MAE by lead day 1 to 9, tmin
KPHL 1.54-1.54 · n=2 0.56-0.56 · n=1 KPHL MAE by lead day 1 to 9, tmin
KPHX 2.65-2.65 · n=2 4.39-4.39 · n=1 KPHX MAE by lead day 1 to 9, tmin
KSAN 1.16-1.05 · n=2 2.65-2.65 · n=1 KSAN MAE by lead day 1 to 9, tmin
KSAT 1.61-0.69 · n=2 2.59-2.59 · n=1 KSAT MAE by lead day 1 to 9, tmin
KSEA 1.00-0.08 · n=2 1.00-1.00 · n=1 KSEA MAE by lead day 1 to 9, tmin
KSFO 0.84-0.58 · n=2 1.51-1.51 · n=1 KSFO MAE by lead day 1 to 9, tmin
KTTN 3.52+3.52 · n=2 4.25+4.25 · n=1 KTTN MAE by lead day 1 to 9, tmin

Up to 2 of the scored days in this table carry a QC flag on the observation (a CLI value that disagreed with the hourly observations, or a fallback source). They are kept in the scores and counted here rather than dropped — see methodology.

Month-by-month slices live on the canonical page: they do not depend on the window, initialization or interpolation selected here.

Source and licence

Where it comes from

aiwp · AURO · IFS initial conditions

Steps every 6 h to 240 h; sampled at 00/06/12/18 UTC only.

Licence

NOAA/CIRA AIWP, U.S. Government work, public domain. Cite Radford et al. (2025), BAMS, doi:10.1175/BAMS-D-24-0057.1.

Post-processing

None. Raw grid values, bilinear (headline) or nearest-node interpolation, no MOS, no bias correction, no downscaling.

All scores as JSON scores_latest.csv daily_errors.csv.gz data & licences