Model

Aurora (GFS init)

aurora_gfs

source aiwp · product AURO · initial conditions from GFS · 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.

aiwp GFS initAURO_v100
Window
the last 30 days
Init
12Z
Interpolation
bilinear
Data through
2026-08-30
Updated
Next update

Instantaneous temperature — MAE °F by stationt2

Scored against the observed 2 m temperature at the same instant (ASOS routine METAR). This is the headline variable: the same four instants on the forecast and the observation side. 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.

the last 30 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows the same row across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL3.33−3.33 · n=24.34−4.34 · n=1KATL MAE by lead day 1 to 9, t2
KAUS4.17−0.05 · n=24.47−2.29 · n=1KAUS MAE by lead day 1 to 9, t2
KBOS3.53−3.53 · n=1KBOS MAE by lead day 1 to 9, t2
KDCA2.49−2.49 · n=23.40−3.40 · n=1KDCA MAE by lead day 1 to 9, t2
KDEN3.00−1.04 · n=1KDEN MAE by lead day 1 to 9, t2
KDFW3.05−2.47 · n=23.44−3.44 · n=1KDFW MAE by lead day 1 to 9, t2
KEWR2.45−1.84 · n=22.58−1.18 · n=1KEWR MAE by lead day 1 to 9, t2
KIAH2.66−1.49 · n=23.23−2.99 · n=1KIAH MAE by lead day 1 to 9, t2
KLAS7.21−7.21 · n=1KLAS MAE by lead day 1 to 9, t2
KLAX2.52−2.18 · n=1KLAX MAE by lead day 1 to 9, t2
KMIA2.69−1.83 · n=23.28−3.28 · n=1KMIA MAE by lead day 1 to 9, t2
KMSP3.11−3.11 · n=24.34−4.34 · n=1KMSP MAE by lead day 1 to 9, t2
KMSY3.80−3.80 · n=23.23−3.23 · n=1KMSY MAE by lead day 1 to 9, t2
KNYC1.28−0.56 · n=21.68−0.32 · n=1KNYC MAE by lead day 1 to 9, t2
KOKC3.97−0.66 · n=24.81−0.58 · n=1KOKC MAE by lead day 1 to 9, t2
KORD2.00−1.43 · n=24.59−4.59 · n=1KORD MAE by lead day 1 to 9, t2
KPHL2.67−2.54 · n=23.36−2.89 · n=1KPHL MAE by lead day 1 to 9, t2
KPHX8.95−8.95 · n=1KPHX MAE by lead day 1 to 9, t2
KSAN4.44−4.44 · n=1KSAN MAE by lead day 1 to 9, t2
KSAT3.01−2.06 · n=24.09−4.09 · n=1KSAT MAE by lead day 1 to 9, t2
KSEA2.02−2.02 · n=1KSEA MAE by lead day 1 to 9, t2
KSFO2.91−2.91 · n=1KSFO MAE by lead day 1 to 9, t2
KTTN2.54+1.28 · n=24.13+1.96 · n=1KTTN MAE by lead day 1 to 9, t2

+ model too warm − model too cold bias interval includes zero ★ lowest MAE = not distinguishable from the leader ▼ worse than the leader ▲ better than the leader — all three Holm-corrected within this table, over the family of comparisons against the leader; the uncorrected verdict for every pair is published in the pairwise table of each permanent link and in pairwise_latest.csv.gzn < 30 greyed and unranked CI is a 95 % moving-block bootstrap interval on the group's own days, and reads — when it could not be computed skill reads — when fewer than 10 days are common to the model and the baseline: the ratio of two means over a handful of shared days is not a number worth printing

Sampled daily maximum — MAE °F by stationtmax_s

Scored against the maximum of the four *observed* samples on the same day.

the last 30 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows the same row across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL3.56−3.56 · n=25.31−5.31 · n=1KATL MAE by lead day 1 to 9, tmax_s
KAUS6.72−6.72 · n=28.28−8.28 · n=1KAUS MAE by lead day 1 to 9, tmax_s
KBOS2.62−2.62 · n=1KBOS MAE by lead day 1 to 9, tmax_s
KDCA2.15−2.15 · n=22.99−2.99 · n=1KDCA MAE by lead day 1 to 9, tmax_s
KDEN4.33−4.33 · n=1KDEN MAE by lead day 1 to 9, tmax_s
KDFW4.21−4.21 · n=25.39−5.39 · n=1KDFW MAE by lead day 1 to 9, tmax_s
KEWR2.66−2.66 · n=22.80−2.80 · n=1KEWR MAE by lead day 1 to 9, tmax_s
KIAH2.44−2.44 · n=23.54−3.54 · n=1KIAH MAE by lead day 1 to 9, tmax_s
KLAS6.20−6.20 · n=1KLAS MAE by lead day 1 to 9, tmax_s
KLAX4.27−4.27 · n=1KLAX MAE by lead day 1 to 9, tmax_s
KMIA4.13−4.13 · n=26.92−6.92 · n=1KMIA MAE by lead day 1 to 9, tmax_s
KMSP5.32−5.32 · n=28.97−8.97 · n=1KMSP MAE by lead day 1 to 9, tmax_s
KMSY5.96−5.96 · n=24.57−4.57 · n=1KMSY MAE by lead day 1 to 9, tmax_s
KNYC0.88−0.88 · n=20.62−0.62 · n=1KNYC MAE by lead day 1 to 9, tmax_s
KOKC3.74−3.74 · n=24.94−4.94 · n=1KOKC MAE by lead day 1 to 9, tmax_s
KORD3.25−2.62 · n=28.53−8.53 · n=1KORD MAE by lead day 1 to 9, tmax_s
KPHL2.33−2.33 · n=25.15−5.15 · n=1KPHL MAE by lead day 1 to 9, tmax_s
KPHX12.07−12.07 · n=1KPHX MAE by lead day 1 to 9, tmax_s
KSAN8.69−8.69 · n=1KSAN MAE by lead day 1 to 9, tmax_s
KSAT6.80−6.80 · n=27.84−7.84 · n=1KSAT MAE by lead day 1 to 9, tmax_s
KSEA5.31−5.31 · n=1KSEA MAE by lead day 1 to 9, tmax_s
KSFO4.28−4.28 · n=1KSFO MAE by lead day 1 to 9, tmax_s
KTTN1.09+1.09 · n=20.07+0.07 · n=1KTTN MAE by lead day 1 to 9, tmax_s

Sampled daily minimum — MAE °F by stationtmin_s

Scored against the minimum of the four *observed* samples on the same day.

the last 30 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows the same row across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL1.46−1.46 · n=21.51−1.51 · n=1KATL MAE by lead day 1 to 9, tmin_s
KAUS5.26+5.26 · n=24.37+4.37 · n=1KAUS MAE by lead day 1 to 9, tmin_s
KBOS4.16−4.16 · n=1KBOS MAE by lead day 1 to 9, tmin_s
KDCA2.39−2.39 · n=23.06−3.06 · n=1KDCA MAE by lead day 1 to 9, tmin_s
KDEN3.10+3.10 · n=1KDEN MAE by lead day 1 to 9, tmin_s
KDFW1.15+1.15 · n=20.29−0.29 · n=1KDFW MAE by lead day 1 to 9, tmin_s
KEWR0.65−0.53 · n=20.33+0.33 · n=1KEWR MAE by lead day 1 to 9, tmin_s
KIAH0.74+0.74 · n=20.48+0.48 · n=1KIAH MAE by lead day 1 to 9, tmin_s
KLAS8.53−8.53 · n=1KLAS MAE by lead day 1 to 9, tmin_s
KLAX1.96−1.96 · n=1KLAX MAE by lead day 1 to 9, tmin_s
KMIA0.74−0.74 · n=21.95−1.95 · n=1KMIA MAE by lead day 1 to 9, tmin_s
KMSP1.03−1.03 · n=21.98−1.98 · n=1KMSP MAE by lead day 1 to 9, tmin_s
KMSY1.59−1.56 · n=23.10−3.10 · n=1KMSY MAE by lead day 1 to 9, tmin_s
KNYC0.53+0.27 · n=20.30−0.30 · n=1KNYC MAE by lead day 1 to 9, tmin_s
KOKC4.38+4.38 · n=24.10+4.10 · n=1KOKC MAE by lead day 1 to 9, tmin_s
KORD1.25+0.41 · n=22.31−2.31 · n=1KORD MAE by lead day 1 to 9, tmin_s
KPHL1.21−1.21 · n=20.04+0.04 · n=1KPHL MAE by lead day 1 to 9, tmin_s
KPHX7.52−7.52 · n=1KPHX MAE by lead day 1 to 9, tmin_s
KSAN1.14−1.14 · n=1KSAN MAE by lead day 1 to 9, tmin_s
KSAT1.54−0.31 · n=22.60−2.60 · n=1KSAT MAE by lead day 1 to 9, tmin_s
KSEA1.30−1.30 · n=1KSEA MAE by lead day 1 to 9, tmin_s
KSFO0.16−0.16 · n=1KSFO MAE by lead day 1 to 9, tmin_s
KTTN3.10+3.10 · n=25.91+5.91 · n=1KTTN MAE by lead day 1 to 9, tmin_s

Against the NWS daily extremes (secondary)

This comparison scores four 6-hourly forecast samples against the true daily extreme, so it includes a sampling penalty. The size of that penalty depends on each model's own diurnal amplitude, which is one of the things this site measures, so these numbers are published for operational relevance and are never used for ranking.

Daily maximum vs NWS CLI

the last 30 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows the same row across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL6.56−6.56 · n=27.31−7.31 · n=1KATL MAE by lead day 1 to 9, tmax_cli
KAUS8.92−8.92 · n=29.68−9.68 · n=1KAUS MAE by lead day 1 to 9, tmax_cli
KBOS4.39−4.39 · n=25.36−5.36 · n=1KBOS MAE by lead day 1 to 9, tmax_cli
KDCA7.05−7.05 · n=28.79−8.79 · n=1KDCA MAE by lead day 1 to 9, tmax_cli
KDEN7.61−7.61 · n=25.90−5.90 · n=1KDEN MAE by lead day 1 to 9, tmax_cli
KDFW7.21−7.21 · n=27.39−7.39 · n=1KDFW MAE by lead day 1 to 9, tmax_cli
KEWR4.36−4.36 · n=23.20−3.20 · n=1KEWR MAE by lead day 1 to 9, tmax_cli
KIAH6.44−6.44 · n=27.54−7.54 · n=1KIAH MAE by lead day 1 to 9, tmax_cli
KLAS6.44−6.44 · n=26.07−6.07 · n=1KLAS MAE by lead day 1 to 9, tmax_cli
KLAX6.93−6.93 · n=26.28−6.28 · n=1KLAX MAE by lead day 1 to 9, tmax_cli
KMIA6.63−6.63 · n=26.92−6.92 · n=1KMIA MAE by lead day 1 to 9, tmax_cli
KMSP7.82−7.82 · n=28.97−8.97 · n=1KMSP MAE by lead day 1 to 9, tmax_cli
KMSY7.46−7.46 · n=25.57−5.57 · n=1KMSY MAE by lead day 1 to 9, tmax_cli
KNYC1.34−1.34 · n=20.54−0.54 · n=1KNYC MAE by lead day 1 to 9, tmax_cli
KOKC8.24−8.24 · n=28.94−8.94 · n=1KOKC MAE by lead day 1 to 9, tmax_cli
KORD4.12−4.12 · n=28.53−8.53 · n=1KORD MAE by lead day 1 to 9, tmax_cli
KPHL5.33−5.33 · n=27.15−7.15 · n=1KPHL MAE by lead day 1 to 9, tmax_cli
KPHX13.30−13.30 · n=215.69−15.69 · n=1KPHX MAE by lead day 1 to 9, tmax_cli
KSAN6.71−6.71 · n=24.48−4.48 · n=1KSAN MAE by lead day 1 to 9, tmax_cli
KSAT7.90−7.90 · n=28.04−8.04 · n=1KSAT MAE by lead day 1 to 9, tmax_cli
KSEA6.50−6.50 · n=24.84−4.84 · n=1KSEA MAE by lead day 1 to 9, tmax_cli
KSFO6.92−6.92 · n=26.19−6.19 · n=1KSFO MAE by lead day 1 to 9, tmax_cli
KTTN1.91−1.91 · n=22.93−2.93 · n=1KTTN MAE by lead day 1 to 9, tmax_cli

Daily minimum vs NWS CLI

the last 30 days, 12Z, bilinear. MAE with the bias and n underneath; every cell links to its permanent page. The sparkline shows the same row across lead days 1–9 on a scale shared within this table.
Stationd0d1d2d3d4d5d6d7d8d9lead 1–9
KATL0.96−0.96 · n=20.51−0.51 · n=1KATL MAE by lead day 1 to 9, tmin_cli
KAUS5.76+5.76 · n=24.37+4.37 · n=1KAUS MAE by lead day 1 to 9, tmin_cli
KBOS3.31−3.31 · n=25.13−5.13 · n=1KBOS MAE by lead day 1 to 9, tmin_cli
KDCA1.24−0.39 · n=21.06−1.06 · n=1KDCA MAE by lead day 1 to 9, tmin_cli
KDEN3.99+3.99 · n=21.94+1.94 · n=1KDEN MAE by lead day 1 to 9, tmin_cli
KDFW1.15+1.15 · n=20.29−0.29 · n=1KDFW MAE by lead day 1 to 9, tmin_cli
KEWR1.97+1.97 · n=22.33+2.33 · n=1KEWR MAE by lead day 1 to 9, tmin_cli
KIAH0.74+0.74 · n=20.48+0.48 · n=1KIAH MAE by lead day 1 to 9, tmin_cli
KLAS7.33−7.33 · n=28.46−8.46 · n=1KLAS MAE by lead day 1 to 9, tmin_cli
KLAX2.72−2.72 · n=22.93−2.93 · n=1KLAX MAE by lead day 1 to 9, tmin_cli
KMIA2.94+1.06 · n=22.35−2.35 · n=1KMIA MAE by lead day 1 to 9, tmin_cli
KMSP1.45−0.53 · n=21.98−1.98 · n=1KMSP MAE by lead day 1 to 9, tmin_cli
KMSY2.59−0.56 · n=23.10−3.10 · n=1KMSY MAE by lead day 1 to 9, tmin_cli
KNYC0.77+0.77 · n=20.70+0.70 · n=1KNYC MAE by lead day 1 to 9, tmin_cli
KOKC5.88+5.88 · n=24.10+4.10 · n=1KOKC MAE by lead day 1 to 9, tmin_cli
KORD1.41+1.41 · n=20.31−0.31 · n=1KORD MAE by lead day 1 to 9, tmin_cli
KPHL0.79+0.79 · n=22.04+2.04 · n=1KPHL MAE by lead day 1 to 9, tmin_cli
KPHX5.90−5.90 · n=28.23−8.23 · n=1KPHX MAE by lead day 1 to 9, tmin_cli
KSAN2.42−2.42 · n=23.19−3.19 · n=1KSAN MAE by lead day 1 to 9, tmin_cli
KSAT1.54−0.31 · n=22.60−2.60 · n=1KSAT MAE by lead day 1 to 9, tmin_cli
KSEA0.90+0.80 · n=20.01−0.01 · n=1KSEA MAE by lead day 1 to 9, tmin_cli
KSFO0.54+0.30 · n=20.36−0.36 · n=1KSFO MAE by lead day 1 to 9, tmin_cli
KTTN5.60+5.60 · n=26.91+6.91 · n=1KTTN MAE by lead day 1 to 9, tmin_cli

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 the numbers come from, what may be done with them, and what was — deliberately — not done to the forecast before scoring it.

Where it comes from

aiwp · AURO · GFS 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.