Time: 546 PM Sun July 7, 2019 Forecaster: Alan Smith

Internal Message Status
Flash Flood Prediction Program

MESSAGES WILL CONTINUE VALID
-Message 1's will continue valid for the entire District until 10:00pm.
-The afternoon cluster of thunderstorms has weakened and is exiting the District to the northeast at this time. Low level moisture has decreased with dewpoints now in the mid to upper 40s, but outflow boundaries from storm activity on the plains could potentially trigger additional thunderstorms over the District into the evening.
-The threat for heavy rainfall is decreasing, but if a strong thunderstorm were to develop over the District then enough moisture remains to produce heavy rainfall. Storm chances will decrease by late in the evening with the loss of daytime heating.
STORM RAINFALL POTENTIAL AND DURATION: Thunderstorms will be capable of producing heavy rainfall of 0.3-0.8" in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm stalls along an outflow boundary and produces heavy rainfall of up to 2.0" in 60-90 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 1000 PM Current TO 800 PM
Jefferson County 1 Current TO 1000 PM Current TO 800 PM
Broomfield County 1 Current TO 1000 PM Current TO 800 PM
Douglas County 1 Current TO 1000 PM Current TO 800 PM
Adams County 1 Current TO 1000 PM Current TO 800 PM
Denver County 1 Current TO 1000 PM Current TO 800 PM
DIA 1 Current TO 1000 PM Current TO 800 PM
Arapahoe County 1 Current TO 1000 PM Current TO 800 PM
the City of Aurora 1 Current TO 1000 PM Current TO 800 PM
Arvada 1 Current TO 1000 PM Current TO 800 PM
Wheat Ridge 1 Current TO 1000 PM Current TO 800 PM
Lakewood 1 Current TO 1000 PM Current TO 800 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
Arapahoe Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
Boulder Current TO 1000 PM SUN
0.1" (85%) to 0.3" (50%) to 0.8" (20%) ISSUED
Broomfield Current TO 1000 PM SUN
0.1" (85%) to 0.3" (50%) to 0.8" (20%) ISSUED
Denver Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
Douglas Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
Jefferson Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1000 PM SUN
0.1" (85%) to 0.3" (50%) to 0.8" (20%) ISSUED
Douglas Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
Jefferson Current TO 1000 PM SUN
0.1" (75%) to 0.3" (45%) to 0.8" (15%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.