Time: 837 PM Mon July 24, 2023 Forecaster: Brad Simmons ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1 ISSUED FOR DOUGLAS COUNTY WILL BE ALLOWED TO EXPIRE AT 9:00 PM Message 1 issued for Douglas County will be allowed to expire at 9:00 PM as the threat for brief heavy rainfall has ended for the day. A few stronger storms impacted areas E of I-25 late this afternoon and evening producing a brief burst of rain and gusty winds. A larger and slower moving storm over Douglas County developed and prompted Message 1's to be issued but this storm has long since moved eastward and generally dry conditions have developed with the exception of the southern foothills and portions of the Palmer Divide. A few lingering light rain showers and possibly a very isolated weak thunderstorm will continue possible over the next couple hours favoring Douglas County and southern Jefferson County. STORM RAINFALL POTENTIAL AND DURATION: Rain showers and possibly an very isolated weak thunderstorm will produce rainfall amounts of a trace to 0.2". COUNTY MESSAGE VALID TIMES PRIME TIME County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1100 PM MON Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Arapahoe Current TO 1100 PM MON Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE Boulder Current TO 1100 PM MON Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Broomfield Current TO 1100 PM MON Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Denver Current TO 1100 PM MON Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Douglas Current TO 1100 PM MON Trace (80%) to 0.1" (40%) to 0.2" (15%) NONE Jefferson Current TO 1100 PM MON Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Foothills above 6500ft       Boulder Current TO 1100 PM MON Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Douglas Current TO 1100 PM MON Trace (80%) to 0.1" (40%) to 0.2" (15%) NONE Jefferson Current TO 1100 PM MON Trace (60%) to 0.1" (30%) to 0.2" (10%) 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]