SPM 09-17-2021: Thunderstorms for Northeast Plains, High Winds Across Eastern Colorado

Issue Date: Friday, September 17th, 2021
Issue Time: 9:40 AM MDT

Summary:

Thursday morning started uneventfully across the state, thanks to plenty of warm and dry air. These conditions, combined with high winds, warranted red flag warnings for Northern and Central Colorado, especially at high elevations. On the Northwest Slope, non-thunderstorm wind gusts reached up to 47 mph, which can be critical for fire weather conditions.

By late afternoon, thunderstorms developed along a cold-frontal boundary dipping into the Northeast Plains. A severe thunderstorm warning was issued on the Colorado-Nebraska border for high winds and up to ping pong ball sized hail. Julesburg received 0.12 inches of rain in just a few minutes from the fast-moving storms. The cold front continued to advance southward over the evening into the overnight hours, causing very gusty winds but no precipitation. 51 mph wind gusts were reported in Colorado Springs, and 58 mph gusts in Pueblo. Windy conditions remain this morning across Southeast Colorado.

No flooding was reported on Thursday. For rainfall estimates in your area, check out the State Precipitation Map below.

The Pueblo radar is currently being upgraded and is offline for the next few weeks, so radar-based precipitation estimates for Southeast Colorado are having to rely on further radars in Denver, New Mexico, Texas, and Kansas. This will result in precipitation being underestimated for this region. More information the radar upgrade can be found here.

Click Here For Map Overview

The map below shows radar-estimated, rainfall gage-adjusted Quantitative Precipitation Estimates (QPE) across Colorado. The map is updated daily during the operational season (May 1 – Sep 30) by 11AM. The following six layers are currently available: 24-hour, 48-hour and 72-hour total precipitation, as well as maximum 1-hour, 2-hour and 6-hour precipitation over the past 24 hour period (to estimate where flash flooding may have occurred). The accumulation ending time is 7AM of the date shown in the bottom right corner. Also shown optionally are vulnerable fire burn areas (post 2012), which are updated throughout the season to include new, vulnerable burn areas. The home button in the top left corner resets the map to the original zoom.