Time: 542 PM Sat June 3, 2023 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S HAVE BEEN ALLOWED TO EXPIRE
Message 1’s have been allowed to expire as the threat of heavy rain has come to an end.

A very unusual weather pattern is in place resulting in atypical storm behavior today. These rain showers have not only moved into the region from the east, but they have also been very efficient rain producing storms. Currently, most, if not all storm activity has subsided in the District and will likely continue through the evening.

Another surge of moisture is expected to return late this evening, between 10pm-2am bringing a chance for additional rain showers. These showers will also move into the region from the east, with training of showers possible if they develop. With dew points still in the upper 40’s to low 50’s currently, combined with slow storm movements, there will be at least a LOW chance for Message 1’s to be reissued late this evening, through the overnight and into Sunday morning.
STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers will produce 0.1-0.3” in 10-30 minutes. A weak to moderate thunderstorm will produce 0.3-0.7” in 10-30 minutes.

WORST CASE SCENARIO: A stationary thunderstorm, or training of thunderstorm cells will have the potential to produce 1.4" in under 60 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Jefferson County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Broomfield County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Douglas County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Adams County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Denver County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
DIA 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Arapahoe County 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
the City of Aurora 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Arvada 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Wheat Ridge 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY
Lakewood 1 Current TO 600 AM SUNDAY Current TO 600 AM SUNDAY

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Arapahoe Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Boulder Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Broomfield Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Denver Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Douglas Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Jefferson Current TO 600 AM SUN
0.1" (50%) to 0.3" (25%) to 0.7" (10%) LOW
Foothills above 6500ft      
Boulder Current TO 600 AM SUN
0.1" (60%) to 0.3" (30%) to 0.7" (10%) LOW
Douglas Current TO 600 AM SUN
0.1" (40%) to 0.3" (20%) to 0.7" (10%) LOW
Jefferson Current TO 600 AM SUN
0.1" (60%) to 0.3" (30%) to 0.7" (10%) LOW
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/