MD 0058 CONCERNING FREEZING RAIN FOR PORTIONS OF CENTRAL/EASTERN KS AND WESTERN/CENTRAL MO
Mesoscale Discussion 0058
NWS Storm Prediction Center Norman OK
0320 AM CST Fri Jan 17 2020
Areas affected...Portions of central/eastern KS and western/central
MO
Concerning...Freezing rain
Valid 170920Z - 171515Z
SUMMARY...Light to moderate freezing rain will continue to spread
northward across parts of Kansas and Missouri this morning. Freezing
rain rates around 0.05 inch per hour remain likely. The greatest
freezing-rain rates should focus across a small part of
central/eastern Kansas. Rates up to 0.10 inch/hour will be possible
across this area.
DISCUSSION...A broad area of precipitation is ongoing this morning
across the southern/central Plains in association with strong
low-level warm advection preceding a northeastward-moving shortwave
trough. Some of this precipitation is occurring atop a shallow
near-surface sub-freezing layer, which is supporting predominately
freezing rain from parts of the TX Panhandle/western OK
northeastward into much of central/eastern KS and western MO early
this morning. The surface wetbulb freezing line similarly extends
from southwest to northeast across west TX and much of OK. Numerous
freezing rain reports have been observed across central/eastern KS
in the past couple of hours. Freezing-rain rates around 0.05 inch
per hour remain likely over much of this area based on recent
observations. The strongest forcing for ascent should focus across
parts of central/eastern KS through 15Z, where a relatively narrow
corridor of greater freezing rain rates may occur. Up to 0.10 inch
per hour rates appear possible across this area. Also, ice accretion
may be enhanced with temperatures in the mid to upper 20s.
With pronounced low-level warm advection expected to continue across
central/eastern KS over the next several hours, surface temperatures
will gradually warm above freezing from south to north across mainly
southeastern KS. A transition from freezing rain to rain will
likewise occur.
..Gleason.. 01/17/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LSX...SGF...EAX...TOP...ICT...GID...DDC...
LAT...LON 37039937 37989952 38579932 39039890 39509738 39579633
39479493 39309379 38929272 38299218 37749203 37309209
36959242 36629302 36589342 36959406 37319463 37409619
37279711 37029797 37039937
from SPC Mesoscale Discussions http://bit.ly/1As53NX
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