Expires:202504191900;;085040 FPUS54 KLZK 191154 ZFPLZK Zone Forecast Product for Arkansas National Weather Service Little Rock AR 650 AM CDT Sat Apr 19 2025 ARZ121-191900- Southern Johnson County- Including the cities of Clarksville, Coal Hill, Hartman, and Knoxville 650 AM CDT Sat Apr 19 2025 ...FLOOD WATCH REMAINS IN EFFECT THROUGH SUNDAY EVENING... .TODAY...A chance of thunderstorms. Showers likely, mainly this morning. Some thunderstorms may produce heavy rainfall. Highs in the mid 70s. East winds 5 to 10 mph, becoming southeast this afternoon. Chance of rain 70 percent. Average rainfall 1/2 to 1 inch. .TONIGHT...Showers with thunderstorms likely in the evening, then showers likely with a chance of thunderstorms after midnight. Some thunderstorms may produce heavy rainfall in the evening. Some thunderstorms may produce heavy rainfall after midnight. Lows in the lower 60s. East winds 5 to 10 mph. Chance of rain 90 percent. Average rainfall 1/2 to 1 inch. .SUNDAY...Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Some thunderstorms may produce heavy rainfall. Highs in the mid 70s. Southeast winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 90 percent. Average rainfall 1/2 to 1 inch. .SUNDAY NIGHT...Showers likely with a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers after midnight. Cooler with lows in the lower 50s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the evening. Chance of rain 60 percent. .MONDAY...Sunny. Highs in the upper 70s. West winds around 5 mph. .MONDAY NIGHT AND TUESDAY...Partly cloudy. Lows in the lower 50s. Highs in the lower 80s. .TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of rain after midnight. Lows in the upper 50s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 80. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 50 percent. .THURSDAY AND THURSDAY NIGHT...Showers likely with a chance of thunderstorms. Highs around 80. Lows in the lower 60s. Chance of rain 70 percent. .FRIDAY...Showers likely with a slight chance of thunderstorms. Highs in the upper 70s. Chance of rain 70 percent. $$