Fig 4. 02 Feb 1999 12 UTC (A) and 03 Feb 1999 00 UTC (B) 850 MB heights (green lines) and wind speed in knots (yellow lines). Wind speeds greater than 40 knots are shaded. Wind barbs (cyan) are in knots. Based on KOTX VWP, wind speeds shown by the ETA at 850 mb are likely not strong enough.