Time: 918 PM Wed July 24, 2019 Forecaster: Brad Simmons

Internal Message Status
Flash Flood Prediction Program

MESSAGES WILL BE ALLOWED TO EXPIRE AT 10:00 PM
-Message 1's will be allowed to expire at 10:00 PM as the threat for heavy rainfall has ended.
-Strongest storms this afternoon developed over far SE areas of the District leaving the majority of the District with just a few isolated light showers and weak thunderstorms. Now that temperatures have cooled into the 70's the threat for strong thunderstorms has ended but additional rain showers and possibly a weak thunderstorm will continue possible well into the evening with best chances for additional precipitation over E and S areas of the District.
-A more active thunderstorm day is expected on Thursday as monsoon moisture increases over the state with moderate to strong thunderstorms capable of producing heavy rainfall. Temperatures Thursday will be a little cooler due to increased cloud cover.
STORM RAINFALL POTENTIAL AND DURATION: Isolated rain showers and possibly a weak thunderstorm will produce a trace to 0.3".

WORST CASE SCENARIO: A strong thunderstorm is able to develop with the potential to produce 0.3-0.9" in 10-30 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 1000 PM Current TO 930 PM
Jefferson County 1 Current TO 1000 PM Current TO 930 PM
Broomfield County 1 Current TO 1000 PM Current TO 930 PM
Douglas County 1 Current TO 1000 PM Current TO 930 PM
Adams County 1 Current TO 1000 PM Current TO 930 PM
Denver County 1 Current TO 1000 PM Current TO 930 PM
DIA 1 Current TO 1000 PM Current TO 930 PM
Arapahoe County 1 Current TO 1000 PM Current TO 930 PM
the City of Aurora 1 Current TO 1000 PM Current TO 930 PM
Arvada 1 Current TO 1000 PM Current TO 930 PM
Wheat Ridge 1 Current TO 1000 PM Current TO 930 PM
Lakewood 1 Current TO 1000 PM Current TO 930 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1159 PM WED
Trace (60%) to 0.1" (30%) to 0.3" (10%) ISSUED
Arapahoe Current TO 1159 PM WED
Trace (60%) to 0.1" (30%) to 0.3" (10%) ISSUED
Boulder Current TO 1159 PM WED
Trace (30%) to 0.1" (15%) to 0.3" (5%) ISSUED
Broomfield Current TO 1159 PM WED
Trace (30%) to 0.1" (15%) to 0.3" (5%) ISSUED
Denver Current TO 1159 PM WED
Trace (60%) to 0.1" (30%) to 0.3" (10%) ISSUED
Douglas Current TO 1159 PM WED
Trace (60%) to 0.1" (30%) to 0.3" (10%) ISSUED
Jefferson Current TO 1159 PM WED
Trace (40%) to 0.1" (20%) to 0.3" (5%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1159 PM WED
Trace (50%) to 0.1" (20%) to 0.3" (5%) ISSUED
Douglas Current TO 1159 PM WED
Trace (50%) to 0.1" (20%) to 0.3" (5%) ISSUED
Jefferson Current TO 1159 PM WED
Trace (50%) to 0.1" (20%) to 0.3" (5%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.