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Mesoscale Discussion 48 |
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Mesoscale Discussion 0048
NWS Storm Prediction Center Norman OK
1136 AM CST Mon Feb 05 2018
Areas affected...Iowa and vicinity
Concerning...Heavy snow
Valid 051736Z - 052330Z
SUMMARY...A zone/band of heavy snow -- falling at local rates in
excess of 1" per hour -- will continue moving across the Iowa
vicinity this afternoon.
DISCUSSION...Latest satellite imagery shows a short-wave trough
within west-southwest flow aloft moving across the Nebraska/Kansas
vicinity at this time, with a small/well-defined baroclinic leaf
evident over the Iowa area. Within this leaf structure, radar
continues to reveal an area of moderate to locally heavy snowfall,
crossing the Missouri valley and overspreading parts of Iowa at this
time.
As QG ascent associated with the short-wave trough continues
shifting east-southeastward, expect the zone of heaviest
precipitation to move across central and into eastern Iowa over the
next several hours. Some areas will likely experience snowfall
rates in excess of an inch per hour for a period of a couple of
hours, and a longer duration of moderate snowfall adding to the
overall accumulation.
..Goss.. 02/05/2018
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILX...DVN...DMX...OAX...
LAT...LON 41199617 42319520 42669220 42219083 41379017 40799057
40589167 40849495 41199617
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