I certainly like the placement of the inverted trough on the models. But, I think anyone rooting for the 3km NAM early changeover outside of the favored areas is wishcasting.
12z sounding from Dulles.
72403 IAD Sterling Observations at 12Z 22 Feb 2026
-----------------------------------------------------------------------------
PRES HGHT TEMP DWPT RELH MIXR DRCT SKNT THTA THTE THTV
hPa m C C % g/kg deg knot K K K
-----------------------------------------------------------------------------
1005.0 93 3.4 1.9 90 4.39 330 5 276.2 288.3 276.9
1000.0 130 4.2 0.3 76 3.93 65 3 277.4 288.3 278.0
999.0 138 4.2 0.2 75 3.90 67 3 277.4 288.3 278.1
956.0 493 1.5 -0.6 86 3.85 140 10 278.2 289.0 278.9
938.0 646 0.3 -0.9 91 3.82 130 11 278.6 289.3 279.2
925.0 759 -0.5 -1.2 95 3.80 150 11 278.8 289.5 279.4
923.0 776 -0.7 -1.4 95 3.76 150 12 278.8 289.3 279.4
910.0 889 -1.3 -1.9 95 3.67 120 14 279.3 289.7 279.9
884.0 1120 -2.5 -3.0 96 3.49 130 10 280.4 290.4 281.0
883.0 1129 -2.5 -3.0 96 3.49 133 10 280.4 290.4 281.0
874.0 1211 -1.9 -2.2 98 3.74 156 10 281.9 292.6 282.5
859.0 1348 -2.8 -2.9 99 3.62 195 11 282.4 292.7 283.0
850.0 1432 -3.3 -3.3 100 3.54 215 8 282.7 292.9 283.3
841.0 1516 -3.7 -3.7 100 3.47 214 8 283.1 293.1 283.7
825.0 1668 -3.5 -3.5 100 3.60 212 9 284.9 295.3 285.5