FTB 05-25-2020: Drier than Yesterday with a Few Scattered Showers/Storms

Issue Date: 5/25/2020
Issue Time: 8:35 AM

— Flooding is NOT expected today

The upper-level trough that brought yesterday’s showers and storms is still meandering its way slowly across the state, with the trough axis highlighted in the image below. The trough is far enough east that the best forcing for storms will be over Kansas and Nebraska, so we will be dealing with drier conditions for Memorial Day. However, the cooler air aloft brought by the trough will result in some instability and allow for the development of a few scattered showers/thunderstorms this afternoon and evening mainly over the higher terrain of the Front Range, Southeast Mountains, Northern Mountains, and Central Mountains. A couple storms will drift over the adjacent lower elevations of the I-25 corridor. Activity will diminish during the late evening hours, coming to an end shortly after sunset.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below. Hover over the threat areas for more details and click on burn areas to learn more about them. For Zone-Specific forecasts, scroll below the threat map.

Zone-Specific Forecasts

Front Range, Southeast Mountains, Urban Corridor, Palmer Ridge, Northeast Plains, Southeast Plains, and Raton Ridge:

Drier than yesterday, but the cooler air aloft brought by the trough will allow for instability to increase in the sunshine, resulting in isolated-to-scattered showers/thunderstorms over the Front Range and Southeast Mountains. This activity will drift with time over adjacent lower elevations, however lacking low-level moisture will not allow them to sustain themselves for long. Any rainfall that occurs will be on the lighter side, especially east of the foothills where low-level moisture has been scoured out the most. Rain rates will generally be less than 0.2 inches/hour everywhere.

Timing: 11 AM – 10 PM

Northwest Slope, Northern Mountains, Grand Valley, Central Mountains, Southwest Slope, San Juan Mountains, and San Luis Valley:

A few isolated showers/storms are expected over the higher terrain, mainly along the Continental Divide, during the afternoon and evening. Any rainfall will be light, with rain rates less than 0.2 inches/hour. Otherwise, much of the area will be mostly sunny and drier, with high temperatures a few degrees warmer than yesterday.

Timing: 11 AM – 9 PM