Flash Flood Prediction Program

Time: 608 PM Sat June 17, 2023 Forecaster: Brad Simmons ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- ALL MESSAGES HAVE BEEN ALLOWED TO EXPIRE AT 6:00 PM The Message 2 for Douglas County (NWS Flood/Flash Flood Watch) has been allowed to expire at 6:00 PM and the additional Message 1’s for the remainder of the District have also been allowed to expire at 6:00 PM. Behind the upper level disturbance that moved through during the early afternoon drier air from the west is moving into the District currently pushing the moist air further east onto the plains and this drier air mass will completely remove the threat for heavy rainfall for the rest of the day and provide drier conditions over the coming days! There could be a an isolated rain showers or weak thunderstorm into the evening but there is no longer a threat for heavy rainfall and most areas will be dry from this point forward. Sunday (Father’s Day) is expected to be a generally dry day over the District with temperatures warming into the middle 80’s which is warmer than we have experienced this year and temperatures may reach or exceed 90 degrees on Monday and Tuesday with dry conditions expected to continue. Summer is FINALLY arriving with a more “normal” weather pattern for this time of year expected to unfold over the coming weeks. STORM RAINFALL POTENTIAL AND DURATION: Isolated rain showers and possibly a very isolated weak thunderstorm produce a trace to 0.2" of rain. Most areas will be dry. COUNTY MESSAGE VALID TIMES PRIME TIME County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Arapahoe Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Boulder Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Broomfield Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Denver Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Douglas Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Jefferson Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Foothills above 6500ft       Boulder Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Douglas Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Jefferson Current TO 900 PM SAT Trace (30%) to 0.1" (15%) to 0.2" (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]