BALTIMORE — A heat advisory remains in effect across the Baltimore metro area Friday, with temperatures soaring near 99 degrees and heat index values reaching as high as 109, as forecasters warn of potentially dangerous conditions and increased risk of heat-related illness.
The National Weather Service issued the advisory from 11 a.m. to 8 p.m., covering Baltimore City, surrounding counties, and much of the I-95 corridor across Maryland, northern Virginia, and Washington, D.C.
“Heat index values up to 109 expected,” the alert states.
Skies will remain sunny and conditions dry through most of Friday, with only a slight chance of isolated thunderstorms between 7 and 9 p.m. Overnight lows will remain warm, around 82 degrees.
Saturday brings continued heat, with a high near 96 and partly sunny skies. A 40% chance of thunderstorms develops in the afternoon, increasing to 60% overnight as scattered storms push into the region. Lows Saturday night will dip only slightly to around 79.
The threat of rain grows Sunday, with a 70% chance of showers and thunderstorms, especially in the afternoon and evening. Temperatures will top out around 94 degrees, continuing the region’s prolonged stretch of hot and humid conditions. Rain chances remain elevated into Sunday night.
Forecasters are calling for persistent heat into next week, with heat index values again expected to climb into the 105 to 109 range Monday through Wednesday.