FTB 05-29-2017: Scattered Afternoon Showers and Storms, But Flooding Not Expected

Issue Date: Monday, May 29th, 2017
Issue Time: 9:30AM MDT

— Flooding is NOT expected today

Happy Memorial Day!

This morning’s water vapor image, below, shows a large trough centered over the northern Great Plains providing Colorado with seasonably cool temperatures but limited moisture for thunderstorm activity. Statewide, this morning’s precipitable water values are in the 0.4 – 0.6 inch range, and a continuation of these levels is expected over the next 24 hours. As we head closer into the summer season, strong insolation can create enough instability even with meager moisture. Such will be the case today. With mainly clear skies this morning, temperatures will warm to near seasonal averages, and enough instability will be generated for scattered showers and weak thunderstorms. Coverage will be highest east of the Continental Divide, where the moisture supply is better. Most locations will see light rainfall, but a few heavier downpours will be likely. However, the duration of the downpours will be short enough to limit runoff. Thus, flooding is not expected today.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below (hover over threat areas for more details). For Zone-Specific forecasts, scroll below the map.

Zone-Specific Forecasts:

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

Mostly clear this morning then partly cloudy with isolated to scattered showers and thunderstorms possible. Highest coverage will be in the foothills and western plains. Max 1-hour rainfall up to 0.7 inches except up to 1.0 inch in the Southeast Plains. Small hail up to 0.5 inches could accompany the stronger cells. Flooding is not expected today.

Primetime: 1PM to 9PM

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

Sunny this morning then becoming partly cloudy with isolated showers and a weak thunderstorm possible mainly in the higher elevations of the Continental Divide. Max 1-hour rainfall up to 0.3 inches. Small hail (up to 0.25 inches) could accompany the stronger cells. Flooding is not expected today.

Primetime: 12PM to 7PM