Time: 249 AM Tue May 28, 2019 Forecaster: Alan Smith

Internal Message Status
Flash Flood Prediction Program

MESSAGES WILL BE ALLOWED TO EXPIRE AT 3:00AM
-Message 1's will be allowed to expire at 3:00am as the threat for heavy rainfall has come to an end.
-Strong/severe thunderstorms that developed during the overnight period have now exited the District to the north/northeast.
-Scattered showers and isolated weak thunderstorms are projected to re-develop toward daybreak across the District, favoring northern areas, but only light to moderate rainfall amounts are expected.
STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce rainfall amounts of TR-0.15" in 10-30 minutes, with up to 0.3" possible in 10-30 minutes under thunderstorms.

WORST CASE SCENARIO: Training of showers/thunderstorms results in rainfall of up to 0.6" in 45-60 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 300 AM Current TO 300 AM
Jefferson County 1 Current TO 300 AM Current TO 300 AM
Broomfield County 1 Current TO 300 AM Current TO 300 AM
Douglas County 1 Current TO 300 AM Current TO 300 AM
Adams County 1 Current TO 300 AM Current TO 300 AM
Denver County 1 Current TO 300 AM Current TO 300 AM
DIA 1 Current TO 300 AM Current TO 300 AM
Arapahoe County 1 Current TO 300 AM Current TO 300 AM
the City of Aurora 1 Current TO 300 AM Current TO 300 AM
Arvada 1 Current TO 300 AM Current TO 300 AM
Wheat Ridge 1 Current TO 300 AM Current TO 300 AM
Lakewood 1 Current TO 300 AM Current TO 300 AM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
Arapahoe Current TO 1000 AM TUE
Trace (80%) to 0.1" (40%) to 0.3" (20%) ISSUED
Boulder Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
Broomfield Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
Denver Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
Douglas Current TO 1000 AM TUE
Trace (80%) to 0.1" (40%) to 0.3" (20%) ISSUED
Jefferson Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
Douglas Current TO 1000 AM TUE
Trace (80%) to 0.1" (40%) to 0.3" (20%) ISSUED
Jefferson Current TO 1000 AM TUE
Trace (90%) to 0.1" (50%) to 0.3" (25%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.