Special Weather Statement issued June 12 at 10:32AM MDT by NWS:

FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING…

* WHAT…Flooding caused by excessive rainfall continues to be possible.

* WHERE…Portions of central, east central, north central, and northeast Colorado, including the following areas, in central Colorado, Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet. In east central Colorado, North and Northeast Elbert County Below 6000 Feet/North Lincoln County and Southeast Elbert County Below 6000 Feet/South Lincoln County. In north central Colorado, Larimer County Below 6000 Feet/Northwest Weld County and Larimer and Boulder Counties Between 6000 and 9000 Feet. In northeast Colorado, Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County, Central and East Adams and Arapahoe Counties, Central and South Weld County, Elbert/Central and East Douglas Counties Above 6000 Feet, Logan County, Morgan County, North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County, Northeast Weld County and Washington County.

* WHEN…Through this evening.

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS… – Thunderstorms are expected to develop late this morning through this evening across northeastern Colorado. Any thunderstorms that develop this afternoon could produce heavy rainfall rates. PRECAUTIONARY/PREPAREDNESS ACTIONS… You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry gulches is possible. Heavy rains may trigger rockslides, mudslides and debris flows in steep terrain.

Flooding in Boulder, Colorado is a significant concern due to the city’s geographical location and its susceptibility to heavy rainfall, snowmelt, and flash floods. Several factors contribute to the increased risk of flooding in the area:

1. Mountainous terrain: Boulder is situated near the foothills of the Rocky Mountains, where rapid snowmelt can occur during spring. This sudden influx of water can overwhelm rivers and creeks, leading to flooding downstream.
2. High precipitation: Boulder experiences a relatively high annual precipitation, including intense rainfall events. When heavy rain combines with the region’s steep topography, it can result in rapid runoff and flash flooding.
3. Urban development: The city’s growth and expansion have led to increased impervious surfaces, such as roads and buildings. These surfaces prevent water from infiltrating into the ground, increasing the amount of runoff during storms and exacerbating flooding.
4. Creek and river channels: Boulder is crisscrossed by several creeks and the Boulder Creek itself. These channels can quickly overflow during heavy rainfall, posing a threat to nearby communities and infrastructure.
5. Climate change: The changing climate patterns have contributed to more extreme weather events, including heavy rainfall and severe storms, which can intensify the risk of flooding in Boulder and other areas.

To ensure safety during flooding events, it is crucial to take the following precautions:

1. Stay informed: Pay attention to weather forecasts, flood warnings, and emergency alerts from local authorities. Sign up for community alert systems and follow reliable sources of information.
2. Prepare an emergency kit: Keep a kit with essential supplies, including food, water, medications, flashlights, batteries, and a first aid kit. Store important documents in a waterproof container.
3. Develop an emergency plan: Create a family emergency plan that includes a designated meeting point, communication methods, and evacuation routes. Practice the plan regularly.
4. Evacuation readiness: If advised to evacuate, follow instructions promptly. Have a “go bag” ready with essential items, and secure your home before leaving.
5. Avoid flooded areas: Stay away from flooded roads, bridges, and waterways. It’s challenging to gauge the depth and strength of the water, and it can be deceptively powerful.
6. Avoid electrical hazards: Do not touch electrical equipment if you are standing in water or on a wet surface. If you suspect electrical damage, contact professionals for assistance.
7. Help others and seek assistance: Check on neighbors, especially those who may need extra help during emergencies. If in immediate danger, call emergency services for rescue.

By understanding the factors contributing to flooding risks, being prepared, and following safety tips, the community in Boulder can mitigate the impact of flooding events and ensure the well-being of its residents.

USGS tracking water levels

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