BEL AIR, MD — Harford County is under a severe thunderstorm warning until 6 p.m. on Friday.
Severe thunderstorms with 70 mph wind gusts and quarter-sized hail were detected by radar before 5:30 p.m., prompting the severe thunderstorm warning, according to the National Weather Service.
The storms were on a line from Jarrettsville to Parkville and were moving east at 15 mph, officials said.
These areas may be impacted, according to severe thunderstorm warning: Cockeysville, Bel Air North, Mays Chapel, Jarrettsville, Timonium, Fallston, Kingsville, Pleasant Hills, Lutherville-Timonium, Fork, Baldwin, Long Green, Hydes, Phoenix, Jacksonville, Chrome Hill and Norrisville.
During a severe thunderstorm warning period, winds may cause trees and large branches to fall, injuring people outside as well as damaging homes and vehicles.
Roads could become blocked by fallen trees, and power outages are possible. People should go inside to the lowest floor and an interior room to stay safe.
Severe Thunderstorm Warning including Aberdeen MD, Havre de Grace MD, Bel Air MD until 6:00 PM EDT pic.twitter.com/zRw0X7EXGx— NWS Baltimore-Washington (@NWS_BaltWash) August 13, 2021
Severe Thunderstorm Warning including Jarrettsville MD, Putnam MD, Federal Hill MD until 5:30 PM EDT pic.twitter.com/a7Ff1BD0Q1— NWS Baltimore-Washington (@NWS_BaltWash) August 13, 2021
Officials say 60 mph wind and quarter-sized hail are possible in Harford County during the severe thunderstorm warning period on Friday, Aug. 13.
The National Weather Service has posted multiple weather alerts for much of Maryland due to potentially hazardous conditions Friday.
A severe thunderstorm watch is in effect until 8 p.m. Friday for Harford County as well as Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil, Charles, Dorchester, Frederick, Howard, Kent, Montgomery, Prince Georges, Queen Anne's, St. Marys, Talbot and Washington counties plus Baltimore City.
Damaging storms may hit in waves midday through the evening.
#Harford under Severe Thunderstorm Watch until 8 p.m. Fri. Aug. 13 https://t.co/aUfMyFJzc5— Harford County Gov't (@HarfordCountyMD) August 13, 2021
Storms will not provide respite from the heat.
Heat indices of 105 to 109 are expected for most of Maryland.
In Bel Air, the heat index is expected to top out at 107 degrees, according to the National Weather Service. The heat index is what it feels like based on the actual temperature and humidity. The hottest point in the day is likely to be around 3 p.m. in Bel Air.
A heat advisory takes effect from 11 a.m. to 7 p.m. on Friday, Aug. 13.
Here is the hour-by-hour forecast for Bel Air:
11 a.m. — Actual temperature 88 degrees; feels like 97
12 p.m. — 90 degrees; feels like 99
1 p.m. — 93 degrees; feels like 105
2 p.m. — 94 degrees; feels like 106
3 p.m. — 95 degrees; feels like 107
4 p.m. — 94 degrees; feels like 106
5 p.m. — 92 degrees; feels like 103
6 p.m. — 91 degrees; feels like 101
7 p.m. — 88 degrees; feels like 97
8 p.m. — 84 degrees; feels like 91
9 p.m. — 83 degrees; feels like 87
10 p.m. — 80 degrees; feels like 84
11 p.m. — 79 degrees; feels like 79
12 a.m. — 78 degrees; feels like 78
Related: Harford Library Branches Serve As 'Cooling Centers' Aug. 11-13
A "code orange" air quality alert is in effect Friday for parts of the Baltimore metropolitan area.
Harford County is under the alert, along with Baltimore City plus Anne Arundel, Baltimore, Cecil and Howard counties.
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The Maryland Department of the Environment issues a "code orange" alert when pollution concentrations may be unhealthy for sensitive groups. Children, older adults, heart/lung disease sufferers and asthmatics are considered sensitive.
To minimize the effects from the air quality, officials advise people in sensitive groups to avoid outdoor and strenuous activities.
Due to the possibility of storms, the National Weather Service issued a hazardous weather outlook for Friday afternoon and evening. It applies to Harford County.
Severe storms and flash flooding are possible in isolated cases during the afternoon and evening on Friday, according to the outlook.
Storms may hit Bel Air between 4 and 7 p.m., the weather service reported.
If someone has signs of heat-related illness, move the person to a cool, shaded area and call 911. Put cold, wet compresses on the person if possible.
Heat stroke, the most serious heat-related illness, can be fatal if not treated immediately.It occurs when the body's temperature rises rapidly and the sweating mechanism fails, leading to overheating without a way to cool down.
Symptoms include confusion; slurred speech; seizures; hot, dry skin or extreme sweating; altered mental status; very high body temperature; and loss of consciousness/coma.
Here are several ways to stay safe during the heat advisory period:
Lighten up. Wear lightweight, light-colored clothing. Light colors reflect away some of the sun's energy. It is also a good idea to wear hats or to use an umbrella.
Drink water. Carry water or juice with you and drink continuously even if you don't feel thirsty. Avoid alcohol and caffeine, which dehydrate the body. Avoid salt tablets unless directed by a physician.
Eat small meals and eat more often. Avoid high-protein foods, which increase metabolic heat.
Slow down. Avoid strenuous activity. If you must do strenuous activity, do it during the coolest part of the day, which is usually in the morning between 4 and 7 a.m.
Stay inside. If air-conditioning is not available, go to the lowest floor out of the sunshine. Remember that electric fans do not cool; they simply circulate the air.
Be a good neighbor. During heat waves, check in on elderly residents in your neighborhood and those who do not have air conditioning.
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