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Mesoscale Discussion 0060
NWS Storm Prediction Center Norman OK
1100 AM CST Fri Jan 17 2020
Areas affected...far northeast KS into northern MO and central IL
Concerning...Freezing rain
Valid 171700Z - 172145Z
CORRECTED FOR TYPOS
SUMMARY...Freezing rain and sleet will continue to lift northeast
across northern MO into central IL through the afternoon hours.
DISCUSSION...Freezing rain, with some areas reporting sleet as well,
extended along the I-70 corridor from the Kansas City metro area to
St. Louis this as of 1530z. Across southwest MO/southeast KS,
temperatures are beginning to climb above freezing in continued
strong warm advection regime. As precipitation continues to spread
northeast across northern MO into central IL, periods of freezing
rain and sleet will continue into this afternoon. Surface
temperatures across the MCD area are generally in the mid 20s to
near 30 degrees with forecast thermodynamic profiles showing
continued support for freezing rain and sleet through much of the
day. Surface temperatures will slowly warm from south to north, with
the freezing line expected to be north of the I-70 corridor
(particularly across western/central MO) by 21z, allowing frozen
precip types to transition to rain. Precipitation rates have been as
high as 0.10 in/hr per Local Storm Reports from WFO Springfield MO.
Rates will mostly be lighter, at a few hundredths of an inch per hr,
though this seems like a reasonable maximum rate in brief heavier
showers.
..Leitman/Guyer.. 01/17/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...PAH...ILX...LSX...DVN...SGF...EAX...OAX...TOP...
LAT...LON 40409184 40469329 40449394 40309482 40179549 39709570
39209532 38319351 38129240 38069099 38258966 38538897
38868840 39338816 39678828 39968897 40189011 40409184
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