Time: 1127 PM Sun June 16, 2019 Forecaster: Brad Simmons

Internal Message Status
Flash Flood Prediction Program

REMAINDER OF MESSAGES 1'S WILL BE ALLOWED TO EXPIRE AT MIDNIGHT
-Message 1's extended for Adams, Arapahoe and Denver Counties will be allowed to expire at midnight as the threat for heavy rainfall has pushed eastward.
-Additional thunderstorms clipped the NE portion of the District late this evening but were moderate to briefly strong in nature. As these storms continue to push eastward a more stable air mass is taking hold over the District at this time.
-There will continue to be a low threat of isolated rain showers and weak thunderstorms overnight but heavy rainfall is not expected. A low pressure system is slowly on the approach from the W/SW setting the stage for another active weather day on Monday with heavy rainfall a good possibility.
STORM RAINFALL POTENTIAL AND DURATION: Rain showers and weak thunderstorms will be capable of producing rainfall amounts of a trace to 0.3" in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm is able to develop in a cooling air mass potentially capable of producing 0.3-0.8" in 15-45 minutes.

County Message Valid Times Prime Time
Adams 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
Arapahoe County 1 Current TO 1159 PM Current TO 1130 PM
the City of Aurora 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 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Arapahoe Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Boulder Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Broomfield Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Denver Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Douglas Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Jefferson Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Foothills above 6500ft      
Boulder Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Douglas Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
Jefferson Current TO 1000 AM MON
0.1" (40%) to 0.1" (20%) to 0.3" (5%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.