FTB 09-29-2019: Wind is the Main Weather Story Today

Issue Date: 9/29/2019
Issue Time: 7:35 AM


The upper-level pattern has changed little since yesterday, but additional strengthening of both the low pressure over the western US and the high pressure over the southeastern US will bring an increase in winds over yesterday’s gusts. These winds will contribute to well above-average temperatures and critical fire weather conditions across much of the eastern half of Colorado. Red Flag Warnings have been issued for portions of the Northern Mountains, Central Mountains, and Front Range; nearly all of the Urban Corridor, Northeast Plains, Southeast Plains, and Raton Ridge; and all of the San Luis Valley, Southeast Mountains, and Palmer Ridge. Please check with your local National Weather Service office for more information.

West of the Continental Divide, a bit more moisture will be present, and a few scattered showers/garden-variety thunderstorms are expected, mainly over the higher terrain, with the best coverage over the Northwest Slope. Wind gusts of 20-35 mph are expected in the lower mountain valleys, with gusts as high as 60-70 mph at the highest peaks, and temperature will be near (or just above) average for this time of year.

Today’s Flood Threat Map

For more information on today’s flood threat, see the map below. For Zone-Specific forecasts, scroll below the map.

Flood Threat Legend

Zone-Specific Forecasts

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

Gusty and dry conditions will be the main impacts today, resulting in dangerous fire weather conditions for the area. Wind gusts up to 35-45 mph over the plains, and up to 50-60 mph over higher terrain are expected. Red Flag Warnings have been issued, please check with your local National Weather Service office for more information. There is a small chance (less than 10%) of an isolated thunderstorm across the far Southeast Plains, but most likely this activity will remain just outside of the state border.

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

Gusty winds will be the most noticeable impact today, as well as a bit of increased cloud cover thanks to a bit more moisture being transported into the state by the upper-level low. With the moisture, a few scattered, high-based showers and garden-variety thunderstorms are expected throughout the afternoon and into the nighttime, with one or two continuing into the early morning. Generally speaking, rain rates will be less than 0.1 inches/hour, with maximum rates less than 0.2 inches/hour. Wind gusts will be 20-35 mph in the lower mountains valleys, and up to 60-70 mph at the highest peaks.