FLOOD THREAT OUTLOOK - NEXT 15 DAYS


About:
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:  Mon., May 20, 2013
Time Issued:  1520 PM MDT
Valid:  May 21 - June 4, 2013
Forecaster:  John Henz
Summary: 
Additional information regarding the threat and expected precipitation amounts are provided with each of the maps accessible via the Threat Level and Precipitation buttons below. Precipitation outlooks are based on a 60% chance of precipitation.

PACIFIC STORM SYSTEM OVER CENTRAL US CHANGING THE SPRING PARADIGM AS IT TAPS MOISTURE

Last week at this time, I thought I had the next two weeks of weather figured out. A progressive Pacific storm track of storms would continue to move across the state keeping us cool and wet into early June. A funny thing happened – a spring storm tapped into moist plains air and decided to stall the whole storm track. Was this expected last week to happen? NO. Even the massive severe weather outbreak of yesterday that saw 28 tornadoes and over 400 severe weather events occur in the central U.S. was not expected. What happened? Simply, a humble Pacific storm system managed to tap into a rich stream of warm, moist air from the Gulf of Mexico and re-invented itself as a prolific storm maker. 

The slowing and intensification of this system has changed the whole weakening Pacific storm track. It has closed the door for a cool wet and stormy Memorial Day weekend and opened the door for a hot dry weekend west of the Divide and a hot, but stormy at times weekend east of the plains... unless?  The satellite water vapor photo shows the now jumbled storm track. The “unless” is the two arrows of subtropical moisture developing off the SW coast of the U.S. If this moisture source is drawn into the Pacific storm track, then the forecast would change again. Right now, we are not forecasting that course of action but we are keeping our eyes wide-open on this one.  Our next update is Thursday. Stay tuned.



                                                    OUTLOOK FOR NEXT 5 DAYS.
                                                                             May 21 - 25, 2013
Click on "Threat Level" or "Precipitation" and a time period to view the current outlook. 
LOW FLOOD THREAT DEVELOPING FOR THE EAST
Moist southeasterly winds will push into the Front Range by Thursday, bringing the threat of two days of stormy severe weather and flash flooding threat to the east. Areas west of the Divide look to stay dry for the five days, but Thursday and Friday east of the Divide could be very stormy and wet.


  Fire-Burn


Disclaimer:

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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