Flash Flood Prediction Program

-	High-pressure continues to dominate over the region today, combined with adequate surface moisture will bring a chance for afternoon and early evening rain shower/isolated thunderstorms. High temperatures today will be in the low to mid 90's across the plains with low to mid 80's along the foothills.
-	Storms will initiate over the higher terrain around midday today and will move out onto the plains between 2-4pm. Rain showers/isolated thunderstorms will move relatively quickly today from the W to E between 10-15mph which will help limit point rainfall amounts. A slower moving storm or training of thunderstorm cells cannot be completely ruled out today leading to a better chance for isolated heavy rainfall. Strong thunderstorms may also produce large hail, gusty straight-line winds and frequent lightning.
-	Shower and thunderstorm activity is expected to decrease by sunset although additional isolated rain showers and possibly a weak thunderstorm will remain possible until 9-10pm.

STORM RAINFALL POTENTIAL AND DURATION: Rain showers and weak to moderate thunderstorms will produce a trace to 0.3". Moderate to strong thunderstorms will have the potential to produce 0.3-0.8" in 10-30 mintues. Supplemental QPF is available at https://qpf.udfcd.org

WORST CASE SCENARIO: A large slower moving thunderstorm or training of thunderstorm cells may produce rainfall amounts of up to 1.4" in 45-60 minutes.

A LOOK AHEAD: This pattern will remain in place through the rest of the week with temperatures in the upper 80's to low 90's through Friday. A chance for rain showers/isolated thunderstorms during the afternoon/early evening through Friday as well.

Location	Prime Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Arapahoe	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Boulder	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Broomfield	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Denver	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Douglas	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Jefferson	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Foothills above 6500ft
Boulder	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Douglas	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW
Jefferson	200 PM TO 900 PM	Trace (50%) to 0.3" (30%) to 0.8" (10%)	LOW

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.