Dangerous heat wave persists in Sussex County through Wednesday

...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 AM EDT FRIDAY... * WHAT...Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Portions of southern Delaware and central, northern and southern New Jersey. * WHEN...From 7 PM this evening to 1 AM EDT Friday. * IMPACTS...At this level, flooding begins on the most vulnerable roads in coastal and bayside communities, and along inland tidal waterways. Some partial or full road closures are possible. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && Time of high total tides are approximate to the nearest hour. Delaware Bay at Lewes MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 6.4 1.8 1.1 Minor 27/11 AM 5.1 0.5 1.3 None 27/11 PM 6.3 1.7 1.2 Minor 28/12 PM 4.7 0.0 0.9 None 29/12 AM 5.7 1.0 0.8 None Arthur Kill at Perth Amboy MLLW Categories - Minor 7.2 ft, Moderate 8.2 ft, Major 9.2 ft MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 7.8 2.1 1.5 Minor 27/10 AM 6.4 0.7 1.0 None 27/10 PM 7.2 1.5 1.0 Minor 28/11 AM 5.6 -0.1 0.3 None 28/11 PM 6.4 0.7 0.5 None 29/12 PM 5.5 -0.2 0.3 None Sandy Hook Bay at Sandy Hook MLLW Categories - Minor 6.7 ft, Moderate 7.7 ft, Major 8.7 ft MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 7.2 2.0 1.3 Minor 27/10 AM 6.1 0.9 1.2 None 27/10 PM 6.7 1.5 1.0 Minor 28/11 AM 5.6 0.4 0.7 None 28/11 PM 6.0 0.8 0.6 None 29/12 PM 5.4 0.2 0.6 None Watson Creek at Manasquan MLLW Categories - Minor 5.7 ft, Moderate 6.7 ft, Major 7.7 ft MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 5.5 1.1 0.8 None 27/10 AM 5.3 0.9 1.2 None 27/10 PM 5.5 1.1 0.8 None 28/11 AM 4.1 -0.3 0.1 None 28/11 PM 4.6 0.2 0.1 None 29/12 PM 3.9 -0.5 -0.1 None Atlantic Ocean at Atlantic City MLLW Categories - Minor 6.0 ft, Moderate 7.0 ft, Major 8.0 ft MHHW Categories - Minor 1.4 ft, Moderate 2.4 ft, Major 3.4 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 6.6 2.0 1.4 Minor 27/10 AM 5.3 0.7 1.4 None 27/10 PM 6.3 1.7 1.1 Minor 28/10 AM 4.7 0.1 0.9 None 28/11 PM 5.7 1.1 0.8 None 29/11 AM 4.6 0.0 0.8 None Great Egg Harbor Bay at Ocean City MLLW Categories - Minor 5.3 ft, Moderate 6.3 ft, Major 7.3 ft MHHW Categories - Minor 1.3 ft, Moderate 2.3 ft, Major 3.3 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 5.7 1.7 0.9 Minor 27/10 AM 4.2 0.2 0.9 None 27/10 PM 5.4 1.4 0.9 Minor 28/10 AM 3.7 -0.3 0.7 None 28/11 PM 4.7 0.7 0.3 None 29/11 AM 3.7 -0.3 0.4 None Cape May Harbor at Cape May MLLW Categories - Minor 6.2 ft, Moderate 7.2 ft, Major 8.2 ft MHHW Categories - Minor 1.1 ft, Moderate 2.1 ft, Major 3.1 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 6.6 1.5 0.6 Minor 27/09 AM 5.4 0.3 1.4 None 27/10 PM 6.4 1.3 1.0 Minor 28/10 AM 5.0 -0.1 1.0 None 28/11 PM 6.0 0.9 0.6 None 29/11 AM 4.8 -0.3 0.8 None Barnegat Bay at Barnegat Light MLLW Categories - Minor 3.5 ft, Moderate 4.5 ft, Major 5.5 ft MHHW Categories - Minor 1.0 ft, Moderate 2.0 ft, Major 3.0 ft Total Total Departure Day/Time Tide Tide from Norm Flood ft MLLW ft MHHW ft Impact -------- --------- --------- --------- -------- 26/10 PM 3.8 1.3 0.9 Minor 27/10 AM 3.2 0.7 1.0 None 27/10 PM 3.7 1.2 0.8 Minor 28/11 AM 2.8 0.3 0.6 None 28/11 PM 3.2 0.7 0.5 None 29/11 AM 2.6 0.1 0.5 None &&

Chief Meteorologist Paul Williams
pwilliams
Chief Meteorologist

Paul Williams has earned ASSOCIATED PRESS CHESAPEAKE BAY BEST WEATHER ANCHOR/METEOROLOLOGIST 2019, 2021, 2023, and serves as the chief meteorologist at CoastTV, delivering weather forecasts during the 5, 6, and 11 p.m. broadcasts. As a key member of the Draper Media storm tracker weather team, he provides crucial emergency weather information to help safeguard the community.

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Jun 24, 2025
Jun 24, 2025

DELMARVA - Sussex County remains under an Excessive Heat Warning through late Wednesday as dangerously high temperatures and stifling humidity continue to grip the region. Tuesday’s heat is forecast to be even more intense than Monday’s, with temperatures rising 1 to 2 degrees higher in many locations.

Although slightly lower humidity may offer limited relief, heat index values—factoring in both temperature and humidity—are expected to mirror Monday’s levels, reaching well into the triple digits. A weak sea breeze will provide only minimal cooling along coastal areas and will not penetrate far inland.

The National Weather Service warns this extended period of heat is especially dangerous, with overnight lows staying in the mid-70s to around 80 degrees, leaving little time for the body to recover. In some urban areas, nighttime temperatures could be the warmest in more than a decade.

Extreme Heat Warnings are in place for most of the region, excluding immediate coastal zones where Heat Advisories remain. Health officials urge residents to stay indoors during the hottest parts of the day, drink plenty of water, and avoid strenuous activity. Never leave children or pets inside a parked car.

By Wednesday night, a cold front will begin approaching from the north, bringing a 20 to 40 percent chance of scattered showers and thunderstorms. Any stronger storms may produce gusty winds, but the risk of severe weather is limited.

Relief is expected by Thursday evening as the front moves through the area. Highs on Thursday will vary—ranging from the upper 70s north of the front to the low 90s in southern Sussex County. While heat index values could once again reach near 100 in southern areas, cooler air will settle in behind the front by Thursday night.

Friday will bring a dramatic shift in conditions, with highs only reaching the upper 60s to upper 70s under cloudy skies and onshore winds. Showers and perhaps a thunderstorm remain possible.

Weather Alert

Severe Thunderstorm Watch from THU 2:20 PM EDT until THU 10:00 PM EDT

Severe Thunderstorm Watch from THU 2:20 PM EDT until THU 10:00 PM EDT

Coastal Flood Advisory from THU 7:00 PM EDT until FRI 1:00 AM EDT

Heat Advisory until THU 8:00 PM EDT

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Dangerous heat wave persists in Sussex County through Wednesday

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Severe Thunderstorm Watch from THU 2:20 PM EDT until THU 10:00 PM EDT

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Coastal Flood Advisory from THU 7:00 PM EDT until FRI 1:00 AM EDT

Heat Advisory until THU 8:00 PM EDT

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