779
ACUS11 KWNS 191818
SWOMCD
SPC MCD 191818
IAZ000-NEZ000-200015-

Mesoscale Discussion 0099
NWS Storm Prediction Center Norman OK
1218 PM CST Thu Feb 19 2026

Areas affected...Eastern Nebraska and western Iowa

Concerning...Heavy snow

Valid 191818Z - 200015Z

SUMMARY...Heavy snow is expected to develop eastward into eastern
Nebraska through the afternoon and reach western Iowa this evening.
Snowfall rates could exceed 1 inch per hour for a few hours.

DISCUSSION...A midlevel shortwave trough and associated low-midlevel
ascent will spread eastward from central into eastern NE through the
remainder of the afternoon.  An initially dry column with a small
warm nose will cool/saturate as precipitation forms and increases in
intensity from west-to-east, with snow expected to be the primary
precipitation type as a result of wet bulb temperatures well below 0
C.  Focused ascent through the dendritic growth layer (driven
primarily by warm advection/frontogenesis 850-600 mb) will support
snowfall at or above 1 inch per hour later this afternoon/evening.

..Thompson.. 02/19/2026

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...DMX...FSD...OAX...GID...LBF...

LAT...LON   41799835 42109777 42249638 42209567 41979531 41439514
            41159540 41079627 41139780 41489833 41799835