VALPARAISO | An official National Weather Service Extreme Heat Warning remains active for northwest Indiana, including Lake, Porter, Newton and Jasper counties in the CGN coverage area.
What is active now
The primary active alert is Extreme Heat Warning. NWS lists the alert severity as Severe, the urgency as Expected and the certainty as Likely. The warning became effective 30 June 2026 at 9:40 p.m. Eastern time and the listed expiration or ending time is 3 July 2026 at 1:00 a.m. Eastern time.
Coverage area
This CGN alert covers Lake County, Porter County, Newton County and Jasper County in northwest Indiana. NWS alert areas can change quickly, and communities near the Illinois state line, Lake Michigan, rural work sites and interstate corridors may experience different conditions or updated guidance.
Safety
The risk is highest for older adults, people without reliable cooling, people with chronic health conditions, outdoor workers, children, pets and anyone delayed on the road or at a work site. Limit strenuous activity, use rest breaks, drink water and seek air-conditioned spaces when heat stress symptoms appear.
Official instruction
NWS urges residents to drink plenty of fluids, stay in air-conditioned rooms, stay out of the sun and check on relatives and neighbors. Children and pets should not be left in vehicles. Car interiors can reach dangerous or lethal temperatures within minutes.
What to watch next
Readers should monitor the latest county-specific NWS alerts, local emergency-management guidance, school or event changes, workplace heat plans and transportation updates. This article should be updated if NWS cancels, extends or replaces the warning.
Additional Reporting By: National Weather Service; NOAA; National Weather Service Chicago