Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii
A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >
| NWS Forecast for: Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm (ANZ454) Issued by: National Weather Service Philadelphia, PA Last Update: 933 AM EDT Sat Mar 21 2026 |  |
| Rest Of Today: NW winds 5 to 10 kt, becoming NE late. Seas 3 to 4 ft. Wave detail: S 3 ft at 6 seconds and SE 3 ft at 9 seconds. Tonight: SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave detail: SE 3 ft at 9 seconds and S 2 ft at 6 seconds. Sun: S winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 4 ft. Wave detail: SE 3 ft at 7 seconds. Sun Night: S winds 10 to 15 kt, becoming W 15 to 20 kt after midnight. Seas 3 to 4 ft. Wave detail: S 4 ft at 5 seconds and SE 2 ft at 8 seconds. A chance of showers after midnight. Mon: N winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 3 seconds and NE 3 ft at 4 seconds. A chance of showers. Mon Night: N winds 15 to 20 kt. Seas 3 to 5 ft. Wave detail: E 4 ft at 8 seconds and NW 3 ft at 4 seconds. Tue: N winds 10 to 15 kt, becoming E 5 to 10 kt in the afternoon. Seas 3 to 5 ft. Tue Night: S winds 5 to 10 kt. Seas 2 to 3 ft. Wed: SW winds 10 to 15 kt. Seas 3 to 4 ft. Wed Night: S winds 10 to 15 kt. Seas 3 to 4 ft. | |
| Zone Forecast: Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm (ANZ454) | |
Visit your local NWS office at: https://www.weather.gov/phi/ |