In terms of the timing of short wave #2, what do GOES and AMSU show during the 00- to 11-Z time period? Both are indicating a more southerly shift of the moisture maximum and a slightly faster movement of the short wave. GOES WV imagery also shows subsidence already affecting western British Columbia and Vancouver Island by 12 Z. Movement of this subsidence into the CWA would probably coincide with an end to any widespread precipitation.

Both GOES WV and AMSU TPW also imply that the 00-Z Eta forecast is too far to the north and shows the short wave moving too slowly. Recall that the Eta precipitation forecast shows the precipitation moving too slowly and keeps the snow going in the Spokane CWA to almost 00 Z on 3 February.