Hazard Report Provided By forecast.weather.gov

INZ001-002-010-011-210500-
Lake IN-Porter-Newton-Jasper-
Including the cities of Gary, Hammond, Merrillville, Portage,
Valparaiso, Chesterton, Roselawn, Kentland, Morocco, Rensselaer,
and DeMotte
1250 PM CDT Sun Jul 19 2026

...AIR QUALITY ALERT REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY
NIGHT...

The officials at the Indiana Department of Environmental Management
have declared an Air Quality Action Day, in effect until midnight
CDT Monday night.

An Air Quality Action Day for ozone and PM 2.5 has been issued. A
combination of fine particulate and ozone levels are expected to be
in the Unhealthy for Sensitive Groups range. Active children and
adults, and people with respiratory disease, such as asthma should
limit prolonged outdoor exposure.

Due to observed and forecasted high concentrations of PM2.5 readings
in the area, recommendations are for the public to avoid or limit
outdoor exposure to wildfire smoke, reduce or avoid exertion or heavy
work outdoors and keep windows and doors closed as much as possible.

 For additional information, please visit the IDEM Smog page at:

 http://www.in.gov/idem/airmonitoring/smogwatch/

$$

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
219 AM CDT Mon Jul 20 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-210730-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
219 AM CDT Mon Jul 20 2026 /319 AM EDT Mon Jul 20 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Tornado Risk.
     Level 2 of 5 Damaging Wind Risk...up to 65 mph.
     Level 1 of 5 Large Hail Risk...up to 1 inch in diameter.
  Limited Flooding Risk.

DISCUSSION...

There is a threat for severe weather this evening and overnight
into early Tuesday morning. However, the peak coverage of storms
may remain just outside of our local area.

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

Tuesday afternoon through early Thursday...
  High Swim Risk Lake Michigan Beaches.

.DISCUSSION...

Hazardous swim conditions are expected to develop Tuesday
night and continue through Wednesday night.

.SPOTTER INFORMATION STATEMENT...

  Spotters activation may be needed later today.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the southeast at 40 mph.

$$

Hazard Report Provided By forecast.weather.gov