FTB 09-16-2018: The Heat is On (Again)

Issue Date: 9/16/2018
Issue Time: 6:20 AM


The upper-level ridge that has dominated the forecast for the past few days will continue to do so today, resulting to another day of above-average to near-record warmth across Colorado. After a clear start to the day statewide, a few cumulus clouds will bubble over the High Country in association with a subtle stream of mid-level moisture from the west/southwest. A few of these clouds will develop into high-based showers over the higher terrain during the afternoon and evening hours, but due to abundant dry air in the lower-levels of the atmosphere, gusty winds and streaks of virga will be all they can muster. Perhaps a sprinkle or two is possible at the tops of mountains in the Northwest Slope and Grand Valley regions, but even so, it will not be enough to even wet the ground. Overnight, temperatures will remain on the mild side as skies clear for the start of the work week.

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, jump below the map.

Flood Threat Legend

Zone-Specific Forecasts

Urban Corridor, Palmer Ridge, Northeast Plains, Southeast Plains, and Raton Ridge:

Hot and dry will be the name of the weather game, with very few clouds (if any) in the sky. High temperatures will push to near-record levels. Gusty winds over the Urban Corridor and western portions of the Northeast Plains and Raton Ridge are likely late this afternoon and evening, as high-based showers produce gusty winds over the Front Range. Leftover clouds from this High Country shower activity will shift over the same regions, providing a bit of late-day shade and nothing more. Fire danger will be elevated, so please use caution with any outdoor activities.

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

Mostly sunny skies and above-average warmth is on tap again today, with breezy southwest winds keeping fire danger elevated. A stream of mid-level moisture from the west/southwest will allow for the development of isolated, high-based showers over the higher terrain during the afternoon and evening hours. Due to very dry air below cloud bases, showers will produce virga, gusty winds, and shade, but no rainfall will be able to reach the surface, except perhaps a sprinkle or two at the top of the mountains. Once again, due to the dry conditions, fire danger will be elevated. Please use caution with any outdoor activities.

Timing: 2 PM – 11 PM