FTB 05-29-2016: A Lot of Sunshine, And a Few Scattered Storms

Issue Date: Sunday, May 29th, 2016
Issue Time: 9:55AM MDT

— Flooding is NOT expected today.

Today’s pattern will be a continuation of yesterday, with a temporary transient ridge setting up overhead as shown in the water vapor image below. The mid-levels of the atmosphere have warmed several degrees Celsius in the last 24-hours and additional height rise are expected. This points to subsidence above the boundary layer and should act to limit rainfall amounts. However, with ample sunshine and enough low-level moisture, expect lots of cumulus clouds to pop up and some of those to lead to scattered showers and thunderstorms. Highest coverage will be east of the Divide, and especially in the Northeast Plains. But with precipitable water values at or below their seasonal normal, rainfall is expected to remain in check. Flooding is not expected today.


The next weather player is also seen on the water vapor image. This cut-off low, currently over southern California, is expected to propagate east and will impact Colorado’s weather on Memorial Day (Monday) and into Tuesday. An increase in shower and thunderstorm activity is expected each day.

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.
FTB_20160529Zone-Specific Forecasts:

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

Mostly sunny early with isolated to scattered showers, and weak thunderstorms developing by early afternoon and lasting into the early evening hours. Storms will form in the higher terrain and move slowly eastward through the day. Flooding is not expected today. Max hourly rain rates:

0.6 inches in the Palmer Divide, Front Range, Urban Corridor and Raton Ridge

1.2 inches in the Northeast Plains and Southeast Plains

Primetime: 12pm to 8pm

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

Mostly sunny early then turning partly cloudy. Scattered showers and perhaps a thunderstorm are possible mainly over the higher terrain. Max hourly rain rates up to 0.25 inches. Flooding is not expected today.