Time: 1100 PM Thu June 15, 2023 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S WILL BE ALLOWED TO EXPIRE AT 1159PM
Message 1’s will be allowed to expire at 11:59pm as the threat of heavy rainfall has come to an end.

Widespread showers still persist over the District at this time and will continue over the next few hours as they slowly progress eastward. A couple pockets of moderate rainfall will be possible with these showers, favoring southern portions of the District currently.

A few off and on showers will be likely through the overnight and into tomorrow. Overnight lows will drop into the low 50’s on the plains with mid to upper 40’s along the foothills.

A stronger disturbance moves over the region tomorrow, bringing another good chance for widespread heavy rainfall tomorrow, with the best chance currently starting as early as 11am tomorrow morning.
STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace to 0.20” total, in 10-30 minutes. A weak to moderate thunderstorm will produce 0.20-0.40” total in 10-30 minutes.

WORST CASE SCENARIO: A stronger thunderstorm, or training of moderate showers/thunderstorms will have the potential to produce 0.8” total in 45-60 minutes.

County Message Valid Times Prime Time
the City of Aurora 1 Current TO 1159 PM Current TO 1130 PM
Arapahoe County 1 Current TO 1159 PM Current TO 1130 PM
Denver County 1 Current TO 1159 PM Current TO 1130 PM
DIA 1 Current TO 1159 PM Current TO 1130 PM
Adams County 1 Current TO 1159 PM Current TO 1130 PM
Douglas County 1 Current TO 1159 PM Current TO 1130 PM
Broomfield County 1 Current TO 1159 PM Current TO 1130 PM
Jefferson County 1 Current TO 1159 PM Current TO 1130 PM
Boulder County 1 Current TO 1159 PM Current TO 1130 PM
Arvada 1 Current TO 1159 PM Current TO 1130 PM
Wheat Ridge 1 Current TO 1159 PM Current TO 1130 PM
Lakewood 1 Current TO 1159 PM Current TO 1130 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 600 AM FRI
Trace (80%) to 0.2" (40%) to 0.4" (20%) NONE
Arapahoe Current TO 600 AM FRI
Trace (80%) to 0.2" (40%) to 0.4" (20%) NONE
Boulder Current TO 600 AM FRI
Trace (80%) to 0.2" (40%) to 0.4" (20%) NONE
Broomfield Current TO 600 AM FRI
Trace (80%) to 0.2" (40%) to 0.4" (20%) NONE
Denver Current TO 600 AM FRI
Trace (80%) to 0.2" (40%) to 0.4" (20%) NONE
Douglas Current TO 600 AM FRI
Trace (80%) to 0.2" (40%) to 0.4" (20%) NONE
Jefferson Current TO 600 AM FRI
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
Foothills above 6500ft      
Boulder Current TO 600 AM FRI
Trace (50%) to 0.2" (30%) to 0.4" (15%) NONE
Douglas Current TO 600 AM FRI
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
Jefferson Current TO 600 AM FRI
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/