MD 0049 CONCERNING FREEZING RAIN FOR EASTERN KS…I-70 CORRIDOR OF MO
Mesoscale Discussion 0049
NWS Storm Prediction Center Norman OK
0202 AM CST Sun Jan 15 2017
Areas affected...Eastern KS...I-70 corridor of MO
Concerning...Freezing rain
Valid 150802Z - 151300Z
SUMMARY...Some expansion in the coverage and intensity of freezing
rain is possible overnight, with hourly rates of 0.03 - 0.05
inches/hour possible.
DISCUSSION...At 0745 UTC, a precipitation shield was slowly
expanding northeastward into portions of east-central Kansas and the
I-70 corridor of Missouri that remain below freezing. While the
strongest warm advection is focused further to the west over
central/western KS, ascent associated with a departing upper-level
jet streak over the Great Lakes should help to maintain light
precipitation across the MCD area through 12-13Z. Even with
relatively modest ascent, PW values approaching 1 inch will support
precipitation rates of around 0.03 - 0.05 inches per hour.
The 0-degree C temperature and wet bulb contours have moved very
little over the past several hours, and only a very slow northward
movement is expected before sunrise, given the lack of a stronger
warm advection regime. Ice accretion may be somewhat less efficient
over the southern portion of the MCD area, where temps are in the
30-32F range, while wet-bulb cooling will support temperatures in
the upper 20s and more efficient accretion across the northern
portion of the area.
..Dean.. 01/15/2017
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LSX...SGF...EAX...TOP...ICT...
LAT...LON 39239599 39289480 39249236 39089080 38699024 38269024
37969069 37889140 37839310 37749444 37709516 37609599
38369634 39239599
from SPC Mesoscale Discussions http://bit.ly/2itDAV2
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