SPM 09-13-2019: Nearly Dry Statewide with Cooler Temperatures Behind the Cold Front

Issue Date: Friday, September 13th, 2019
Issue Time: 9:15AM MDT

Summary:

Not much rainfall yesterday outside of some light rainfall over the eastern plains and northern mountains associated with the morning cloud cover. MetStorm is also showing a little precipitation over the highest elevations of the San Juan Mountains (0.05 inches), but that isn’t on the map because it’s below the 0.25 inch threshold. Temperatures were more seasonable yesterday afternoon as well with colder air in place behind the trough. A much drier air mass was in place, so even afternoon cloud cover was limited.
 
Released on Thursday, below is the newest drought map. This does not contain precipitation from the last system, which may or may not have affected the results. Not thinking there would be much change since the higher amounts were more isolated. The D1 (Moderate Drought) drought continued to increase in area over the Southwest Slope. With a weak monsoon for western Colorado (climatologically strongest in August) and the warmer temperatures without much precipitation, the drought is quickly worsening. It’s looking to stay much warmer in the 8-10 day outlook with equal to below rainfall chances for western Colorado. Therefore, don’t be surprised if the D1 area expands when the next drought map comes out.

 

To see estimated precipitation totals over your neighborhood yesterday, scroll down to 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 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.