The weather forecast products described below are designed to identify potential flood threats affecting the District. They are prepared by contract meteorologists in Denver. This District-funded flood prediction and notification service is known as the Flash Flood Prediction Program, a.k.a. F2P2. The program operates from 15-April through 15-September and has been serving the District continuously since 1979. Visit our Flood Warning webpage for more information about the F2P2.
 | Heavy Precipitation
Outlook (HPO) This text product is available by 11:00 AM every day during our primary flood season as noted above. It provides a weather forecast for the District with emphasis on possible rainfall amounts and where storms are most likely to occur. When flood potentials threaten the District, this product will be revised and renamed "Internal Message Status" or IMS. This report will indicate the message status for each county within the District. Those counties include Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and Jefferson. |
| Quantitative
Precipitation Forecast (QPF) This text product is only available on days when the rainfall potential exceeds 1.5 inches in one-hour or less. The QPF product contains more basin-specific information than the HPO or IMS, and requires some knowledge of the regional major drainage basins, streams and associated flood hazards that impact the District. Storm types, expected rainfall totals, storm duration, peak intensities and associated probabilities of occurrence are presented in this forecast product. |
| StormTrak (ST) This combination map/text product is a short lead-time forecast showing where a storm has formed or is forming, the approximate size of the storm(s), the direction (or track) of the storm(s), and the estimated arrival times along the forecast track(s). This is probably the most-anticipated hard copy product of the F2P2, but keep in mind that generally it is only available within an hour or less of storm impact. Also, the ST is not prepared for storms that do not pose a flood threat. |
| Message Definitions Standardized messages are issued to emergency communication centers in each of the seven District counties. Dispatchers disseminate the information according to standard operating procedures unique to each jurisdiction. |
| News Release |
