A multi-day excessive heat event occurred across much of the mid-Atlantic from August 11-13, 2021. Temperatures in the mid to upper 90s combined with dew point values near 70 caused widespread heat index values near to above 105F on both August 11 and 12, and locally into the 13th before a cold front brought relief.

Excessive Heat in WESTERN OCEAN, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12, with some localized 110F values.

Excessive Heat in NORTHWESTERN BURLINGTON, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12, with localized 110F values.

Excessive Heat in SOUTHEASTERN BURLINGTON, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12.

Excessive Heat in CAMDEN, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12. Fairly widespread values up to 110F occurred on the 11th.

Excessive Heat in GLOUCESTER, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12.

Excessive Heat in WARREN, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12.

Excessive Heat in MORRIS, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12.

Excessive Heat in HUNTERDON, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12, and locally on the 13th.

Excessive Heat in SOMERSET, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12.

Excessive Heat in MIDDLESEX, NEW JERSEY
From 11-AUG-21 09:00:00 to 13-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11, 12, and 13, with some localized 110F values on the 11th and 12th.

Excessive Heat in MERCER, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12.

Excessive Heat in WESTERN MONMOUTH, NEW JERSEY
From 11-AUG-21 09:00:00 to 12-AUG-21 19:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index values reached 105F on August 11 and 12, with some localized 110F values.