Alert archive / Illinois / Small Craft Advisories in 2019

Small Craft Advisory 49, NWS Chicago, IL

May 21, 2019

NWS Chicago, IL issued this small craft advisory at May 21, 2019, 3:53 AM CDT. It took effect at May 21, 2019, 4:00 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
May 21, 2019, 3:53 AM CDT (08:53 UTC)
In effect from
May 21, 2019, 4:00 PM CDT
Expired
May 22, 2019, 3:06 AM CDT
In force
11 hr
Issued by
NWS Chicago, IL

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before this small craft advisory went out at May 21, 12:38 AM CDT, 3 hours 15 minutes earlier.

Area forecast discussion, May 21, 12:38 AM CDT, 3 hours 15 minutes before
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Hazardous weather outlook, May 20, 4:12 PM CDT, 11 hours 41 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Chicago/Romeoville IL
412 PM CDT Mon May 20 2019

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
212115-
Winnebago-Boone-McHenry-Lake-Ogle-Lee-De Kalb-Kane-DuPage-Cook-
La Salle-Kendall-Grundy-Will-Kankakee-Livingston-Iroquois-Ford-
Porter-Newton-Jasper-Benton-
412 PM CDT Mon May 20 2019 /512 PM EDT Mon May 20 2019/

This Hazardous Weather Outlook is for portions of North Central
Illinois...Northeast Illinois and Northwest Indiana.

.DAY ONE...Tonight.

  No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday...
  Limited Severe Thunderstorm Risk.
  Limited Flooding Risk.
  Limited Non Thunderstorm Wind Risk in the evening.
  Limited Lakeshore Flooding Risk at night.
  High Swim Risk at night for Illinois beaches.
Wednesday...
  Limited Thunderstorm Risk at night.
  Limited Lakeshore Flooding Risk in the morning.
  High Swim Risk in the morning for Illinois beaches.
Thursday through Sunday...
  Limited Thunderstorm Risk.

DISCUSSION:

A strong low pressure area lifting through the Plains will
affect the region on Tuesday and Tuesday night. Heavy downpours
are possible in the morning and especially Tuesday night with a
complex of fast moving showers and thunderstorms. River rises and
localized flooding are possible. There is also a low risk for
isolated strong to severe wind gusts from west central LaSalle
County to southeast Iroquois County and points south and west on
Tuesday night. By Tuesday evening winds are expected to be
gusting to 30 to 40 mph from the east, which could also cause
minor lakeshore flooding, primarly along the Illinois shore.

Thunderstorms are then possible at times Wednesday night through
Sunday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

LMZ740>745-212115-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
412 PM CDT Mon May 20 2019

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

  No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Tuesday and Wednesday...
  Hazardous conditions for small craft are likely.
  Limited Thunderstorm Risk.
Thursday through Sunday...
  Limited Thunderstorm Risk.

RC

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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 21, 4:22 AM CDTBeach Hazards StatementLOTLake32 hr
May 21, 11:11 AM CDTRiver Flood AdvisoryLOTLaSalle24 hr

Nearby

Small Craft Advisories in Illinois, 2019Every small craft advisory in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.