Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 217 AM EDT Thu Sep 11 2025 Valid 12Z Thu Sep 11 2025 - 12Z Sat Sep 13 2025 ...There is a Slight Risk of excessive rainfall over parts of southeastern Florida on Thursday and Friday, as well as the Central/Southern Rockies on Friday... A front will be lingering over Florida through Saturday. Tropical moisture will pool over Florida, aiding in the development of showers and thunderstorms that will bring heavy rain to Florida. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over southeastern Florida through Friday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas the most vulnerable. The heavy rain will continue on Friday over Florida. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over southeastern Florida from Friday through Saturday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas the most vulnerable. An upper-level low over Northern California/Great Basin will produce light rain and embedded thunderstorms over parts of the Northwest, Northern California, and Great Basin through Thursday evening. Overnight Thursday, moisture will start to stream northward across northwestern Mexico into the Southern Rockies, providing plenty of fuel for showers and thunderstorms with heavy rain over parts of the Central/Southern Rockies on Friday. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Central/Southern Rockies from Friday through Saturday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas the most vulnerable. By Friday, the rain over California and most of the Northwest will end. However, rain will continue over parts of the Northern Intermountain Region, the Northern Rockies, and the Northern Plains through Saturday. Late Friday, upper-level energy will move over the Great Lakes, producing showers and thunderstorms overnight Friday into Saturday. Furthermore, smoke from wildfires has prompted Air Quality Alerts over parts of the Northwest. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php