Time: 855 PM Mon May 20, 2024 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 9:00 PM FOR PORTIONS OF THE DISTRICT Message 1’s will be allowed to expire at 9pm for portions of the District as the threat of heavy rain has come to an end. After a few strong storms for eastern portions of the District, only a few lingering showers remain as thunderstorms continue to move eastward and out of the District. Skies will gradually clear into the late evening, however an additional round of showers with some thunderstorm potential will be possible in the early morning hours Tuesday. Overnight lows will drop into upper 40s to low 50s on the plains with low to mid 40s along the foothills. Another chance for showers and thunderstorms tomorrow, starting as early as midday and lasting through the afternoon and into the early evening. The potential for strong to severe storms will remain, however, cooler overall temperatures, in the low 60s may help limit convection across the Front Range. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce rainfall of a T-0.10” total in 10-30 minutes. Moderate to strong showers have the potential to produce rainfall of 0.10” to 0.30” total in 10-30 minutes. WORST CASE SCENARIO: Strong stationary, or training of thunderstorms has the potential to produce 0.50” in under 60 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Adams County 1 Current TO 900 PM Current TO 900 PM DIA 1 Current TO 900 PM Current TO 900 PM Arapahoe County 1 Current TO 900 PM Current TO 900 PM the City of Aurora 1 Current TO 900 PM Current TO 900 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1100 PM MON Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Arapahoe Current TO 1100 PM MON Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]