Area Forecast Discussion
Issued by NWS Green Bay, WI

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FXUS63 KGRB 150918
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
418 AM CDT Sun Apr 15 2018

Updated headline coding is below. Complete discussion to follow a
little later this morning.

.DISCUSSION...
Issued at 413 AM CDT Sun Apr 15 2018

The main headline change this morning will be to extend the
Lakeshore Flood Warning/Advisory to 6 pm, and the Gale Warning to
midnight. Sleet in east-central Wisconsin has kept vsbys up and
snow amounts down since yesterday evening, and kept the southern
part of the forecast area from meeting blizzard criteria.
RAP/HRRR/NAM soundings are very insistent the warm layer aloft
will erode in the next several hours, resulting in a change to
heavy snow. Looks like this is happening now in GRB, but may take
a while (until around 12-13Z) to reach the SE corner of the area.
Grids already sent. Hazard products will be out ASAP.
&&


.AVIATION...for 06Z TAF Issuance
Issued at 1148 PM CDT Sat Apr 14 2018

A difficult night for flying as a winter storm over
Illinois brings snow, gusty northeast winds and IFR conditions to
the region. The snow could be mixed with sleet at times at ATW/OSH/MTW.
Snow is expected to continue across the area Sunday with IFR
flight conditions. Gusty northeast winds will produce blowing and
drifting snow. Blizzard conditions are possible at times tonight
and Sunday at GRB/OCQ/ATW/SUE/3D2/2P2. The snow will diminish
Sunday afternoon.
&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Winter Storm Warning until midnight CDT tonight for WIZ005-
010>013-018>021-030-031-035>037-045-048>050.

Lakeshore Flood Warning until 6 PM CDT this evening for WIZ022-
039-040-074.

Blizzard Warning until midnight CDT tonight for WIZ022-038>040-
073-074.

Lakeshore Flood Advisory until 6 PM CDT this evening for WIZ050.
&&

$$

AVIATION.......RDM
DISCUSSION.....Skowronski



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