FTB 06-27-2017: Substantial Drying Today, But A Few Strong-to-Severe Storms Possible East

Issue Date: Tuesday, June 27th, 2017
Issue Time: 10:50AM MDT

— Flooding is NOT expected today

After several days of elevated moisture across eastern Colorado, this morning’s water vapor imagery, below, suggests drying will overtake most of the state. This is courtesy of an approach disturbance that is causing lifting motion and showers/storms across WY and MT. For Colorado, however, the dry air will be the stronger hand today. Although isolated to scattered storms will be possible, especially across the higher terrain as well as eastern Colorado, rain rates will be below flood-threat intensity. Thus, flooding is not expected today.

In the far northeast corner of Colorado, severe weather will be possible later this afternoon as an incoming jet streak creates a favorable shear profile for strong, rotating updrafts. Large hail, up to 2.5 inches and gusty winds will be the main threat. Storm motions will be 30mph or greater, limiting heavy rainfall in a given locale.

Today’s precipitation probability map is shown below.

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:

Northeast Plains:

Sunny early then partly cloudy with isolated to scattered thunderstorms possible after noon. Max 30 minute rainfall up to 1 inch and max 1-hour rainfall up to 1.4 inches will be just under flood intensity; thus no threat is issued. However, severe weather will be possible, including hail up to 2.5 inches and gusty winds up to 65 mph.

Primetime: 2PM to 9PM

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

Sunny early then partly cloudy with isolated showers and perhaps a weak thunderstorm during the afternoon. Max 30-minute rainfall 0.5 inches. Flooding is not expected today.

Primetime: 12PM to 8PM

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

Mostly sunny and slightly cooler today. An isolated shower or weak thunderstorm will be possible especially over northern areas and higher elevations. Max 1-hour rainfall up to 0.4 inches. Gusty winds and dry lightning will be more of a threat than rainfall.

Primetime: 11AM to 7PM