SPM 09-30-2018: Warm and Dry During the Day, Cool Front Pushed Southward Overnight

Issue Date: Sunday, September 30th, 2018
Issue Time: 9:30 AM MDT


NOTE: This is the last scheduled State Precipitation Map (SPM) discussion of the 2018 season. However, additional discussions may be necessary this next week to cover the heavy rainfall threat possible across Western Colorado. If a flood threat appears, we will be doing special Flood Threat Bulletin(s), and SPM discussions, as warranted.

The main weather stories during the day yesterday were (1) the wild swing upward in high temperatures across eastern Colorado, where highs were 20-35°F warmer than the day before, and (2) the elevated fire danger brought on by warm, dry, and breezy conditions, especially over the High Country. Overnight and this morning, a weak surface low and attendant cold front pushed southward through eastern Colorado and brought low clouds, fog, and a few pockets of light drizzle to the eastern plains. The drizzle did not result in anything more than a trace accumulation, and was the only precipitation that Mother Nature could muster over the last 24 hours.

No flash flooding was reported yesterday. For a look at precipitation estimates in your area, please see the State Precipitation Map below.

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 24-hour, 48-hour and 72-hour total precipitation contain bias corrections that are not disaggregated into the hourly estimates, so there will likely be some differences. The accumulation ending time is 7AM of the date shown in the bottom right corner. Also shown optionally are fire burn areas (post 2012), which are updated throughout the season to include new burn areas. The home button in the top left corner resets the map to the original zoom.