FLOOD THREAT BULLETIN (For Twitter Updates follow @FloodDSS and @COFloodUpdates)

The CWCB offers a daily assessment of flood potential around the state, issued at 11:00 am each day from May through September.

This product is issued daily before 11:00 am and is used to identify areas of the state that are at risk of flooding.  Updates can be issued as needed by weather situation.

This product is an outlook of the flood threat and precipitation amount and chance in the state over the next 15 days.

This map is created by merging the 24-hr Storm Total Precipitation (STP) product observed regional WSR-88D and the MADIS observational database. Issued at 9:30 am every day.

Issue Date:  Tuesday, Sept. 30, 2014
Time Issued:  10:50 AM MDT
Forecaster:  Brad Workman  




Today will be a much quieter day overall as the potent upper-level low has tracked north and east of Colorado, moving across the Dakotas today (it is marked by the red “L” on the water vapor image below). A quick shot of subsidence behind the low has dried out the air mass and cleared the skies over eastern Colorado this morning. Northern portions of the high country and western slope remain mostly cloudy ahead of the next quick upper-level shortwave expected to move through northern Colorado this afternoon and evening, with skies to the south fitting the mostly sunny criteria.

Today will be a seasonable, early Fall day east of the mountains, with skies hovering between partly and mostly sunny, and high temperatures in the upper 60s and low 70s along the urban corridor and in the low-to-mid 70s further east across the plains. Over the high country and western slope will be a slightly different story, as isolated-to-scattered showers and weak thunderstorms are expected to develop this afternoon in conjunction with the quick-moving upper-level disturbance (marked by the purple line in the water vapor image). Most of the showers/thunderstorms will be along and north of the I-70 corridor, with only a few isolated showers/weak thunderstorms expected south of I-70 (mainly over the San Juan Mountains).  No flooding issues are expected as moisture values have dropped off significantly since yesterday; IPW values over the western half of the state range from 0.2-0.6 inches currently, and those values are not expected to increase much through the afternoon. Snow levels will hover around 10,000 feet today and drop to around 9,000 feet overnight.



High Country and Western Slope:

Isolated-to-scattered showers and weak thunderstorms expected, mainly along and north of I-70 this afternoon and evening (Noon – 9 PM), with a few lingering into the early morning hours tomorrow. Rain rates will be low, with maximum values around 0.25 inches/hour. Snow levels will be around 10,000 feet today, falling to around 9,000 feet overnight.

Winds will be gusty in the higher elevations today, especially for northern and central mountains. At the timberline and above, wind gusts up to 40-45 MPH are expected to prevail through this afternoon, with winds tapering off for the lowest elevations (5-15 MPH).

Urban Corridor and East:

Have you been waiting on Summer to end and Fall to begin? If so, today is your kind of day. High temperatures will be on the cooler side, with breezy conditions expected across the northern half of the area. Wind gusts near the Front Range foothills will be out of the west at 20-30 MPH. Breezy conditions are expected across northern portions of the plains, with winds gusting to 25-35 MPH. Further south, winds will be a little calmer, with breezes topping off around 10-15 MPH.

Hover over your county to read your county-specific flood threat prediction.



The State of Colorado makes no warranties or guarantees, either expressed or implied as to the completeness, accuracy, or correctness of the data portrayed in this product nor accepts any liability, arising from any incorrect, incomplete or misleading information contained therein.  All information, data and databases are provided "as is" with no warranty, expressed or implied, including but not limited to, fitness for a particular purpose. 

By accessing this website and/or data contained within the databases, you hereby release the State of Colorado, its employees, agents, contractors, and suppliers from any and all responsibility and liability associated with its use. In no event shall the State of Colorado or its officers or employees be liable for any damages arising in any way out of the use of the website, or use of the information contained in the website herein including, but not limited to the Flood Threat Portal.  

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