Time: 1140 PM Sun August 27, 2023 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1’S WILL BE ALLOWED TO EXPRIED FOR ARAPAHOE AND DOUGLAS COUNTIES AT 11:59 PM
Message 1’s will be allowed to expire at 11:59pm for Arapahoe and Douglas Counties as the threat of heavy rainfall has come to an end.

After a strong round of showers/thunderstorms a few lingering showers continue for eastern portions of the District and will slowly taper off over the next couple of hours. Skies will gradually clear through the overnight with a few areas of patchy fog possible through daybreak tomorrow. Another good chance for storms tomorrow afternoon and into tomorrow evening with at least a moderate chance for heavy rainfall producing storms.
STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce rainfall of a trace to 0.20” total in 10-30 minutes.

WORST CASE SCENARIO: A moderate to strong shower will have the potential to produce rainfall of 0.20" to 0.40” total in 10-30 minutes.

County Message Valid Times Prime Time
Arapahoe County 1 Current TO 1159 PM Current TO 1159 PM
Douglas County 1 Current TO 1159 PM Current TO 1159 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 200 AM MON
Trace (20%) to 0.2" (10%) to 0.4" (5%) NONE
Arapahoe Current TO 200 AM MON
Trace (60%) to 0.2" (30%) to 0.4" (15%) NONE
Boulder Current TO 200 AM MON
Trace (20%) to 0.2" (10%) to 0.4" (5%) NONE
Broomfield Current TO 200 AM MON
Trace (20%) to 0.2" (10%) to 0.4" (5%) NONE
Denver Current TO 200 AM MON
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
Douglas Current TO 200 AM MON
Trace (75%) to 0.2" (50%) to 0.4" (25%) NONE
Jefferson Current TO 200 AM MON
Trace (20%) to 0.2" (10%) to 0.4" (5%) NONE
Foothills above 6500ft      
Boulder Current TO 200 AM MON
Trace (20%) to 0.2" (10%) to 0.4" (5%) NONE
Douglas Current TO 200 AM MON
Trace (60%) to 0.2" (30%) to 0.4" (10%) NONE
Jefferson Current TO 200 AM MON
Trace (20%) to 0.2" (10%) to 0.4" (5%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/