SPM 09-19-2022: Dry Sunday, Dense Fog This Morning for Portions of Plains

Issue Date: Monday, September 19th, 2022
Issue Time: 11:05 AM MDT

Summary:

The ridge dominating the south-central U.S. built westward on Sunday, providing subsidence and dry conditions across Colorado. Precipitation was only observed at a handful of stations scattered throughout the state, with amounts of 0.05” or less. The main weather story of the past 24 hours was dense fog for portions of the eastern Plains this morning.

No flooding was reported yesterday. For precipitation estimates in our area, check out the map below. Remember, if you observe flooding in your area, you can use the “Report a Flood” page to make a flood report when you can safely do so.

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.

SPM 09-18-2022: Calm and Dry

Issue Date: Sunday, September 18th, 2022
Issue Time: 9:30 AM MDT

Summary:

Colorado stayed quite dry yesterday, with rainfall generally only observed around the Denver area and northern Colorado. 0.11”-0.19” was reported in areas north of the Urban Corridor along the Front Range and Northern Plains, but most other observations along the Urban Corridor came in at under 0.1”. The highest precipitation observed yesterday was 0.43” in Steamboat Springs via a CoCoRaHS observer. Additionally, the western slope saw a few reports of 0.01-0.02” of rainfall from Mesowest gages. Those observations were few and far between- the majority of the western slope was precipitation-free.

No flooding was reported yesterday. For precipitation estimates in our area, check out the map below. Remember, if you observe flooding in your area, you can use the “Report a Flood” page to make a flood report when you can safely do so.

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.

SPM 09-17-2022: More Precipitation for Northern Half of State, Storms for Northern Northeast Plains

Issue Date: Saturday, September 17th, 2022
Issue Time: 9:55 AM MDT

Summary:

Friday featured precipitation across the northern half of Colorado, particularly along and north I-70/I-76, thanks to another shortwave trough. The I-70 corridor west of the Divide saw the heaviest widespread precipitation, with general amounts of 0.25-0.50”; locally higher amounts were also observed, including 0.81” northwest of Grand Junction and 0.53” in Grand Junction.

The other area that saw heavy precipitation, albeit much more isolated in nature, was the extreme northeastern corner of the state in Logan, Sedgwick, and Phillips Counties, where QPE data suggests amounts exceeding 1.50”. Notable rain gauge observations include 1.67” near Julesburg and 1.32” near Big Springs from CoCoRaHS observers. This heavy rainfall was from thunderstorms, with the convection prompting a Severe Thunderstorm Warning for Sedgewick County; no severe weather reports were received.

No flooding was reported yesterday. For precipitation estimates in our area, check out the map below. Remember, if you observe flooding in your area, you can use the “Report a Flood” page to make a flood report when you can safely do so.

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.

SPM 09-16-2022: Heavy Rain Around Palmer Ridge, Flurries/Snow Showers in the Mountains

Issue Date: Friday, September 16th, 2022
Issue Time: 11:30 AM MDT

Summary:

Another shortwave trough passing over the state provided ample life to produce precipitation for most areas on Thursday. Similar to Wednesday, there were once again two main regions of heavier precipitation: 1) along and north of I-70 west of the Divide, and 2) over and surrounding the Palmer Ridge.

In the first heavier precipitation region (Grand Valley, Northwest Slope, Northern Mountains), QPE data suggests a general 0.25-0.50” with locally higher amounts. Some notable locally higher gauge observations include:

• 0.67” northeast of Craig
• 0.65” near Rio Blanco Lake
• 0.51” near Craig

Also of note in this region, temperatures were cold enough for snow to be observed along I-70 near Vail Pass. Additional reports of snow showers/flurries were received across the Central Mountains and San Juans.

For the second and heaviest precipitation region (Palmer Ridge vicinity), QPE data suggests that storms produced up to 1.00-1.50” of rainfall, particularly across Kit-Carson and Cheyenne Counties. Notable rain gauge observations include:

• 1.14” near Cheyenne Wells
• 1.06” near Limon
• 0.99” near Kit Carson

Heavier rainfall totals of up to 0.75” were also observed along and north of the I-76 corridor, including 0.62” near Snyder, but these totals were more isolated. Elsewhere across the state, precipitation amounts were generally 0.25” or less.

No flooding was reported yesterday. For precipitation estimates in our area, check out the map below. Remember, if you observe flooding in your area, you can use the “Report a Flood” page to make a flood report when you can safely do so.

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.