State Precipitation Map

SPM 07-30-2018: Late Season Severe Weather Day for Eastern Colorado

July 30, 2018 by Dana McGlone ·

Issue Date: Monday, July 30th, 2018
Issue Time: 09:06 AM MDT

Summary:

Severe weather returned to the eastern Colorado on Sunday. This is quite odd because it is so late in the severe weather season. However, excellent shear and high CAPE (Convective Available Potential Energy) values provided a favorable environment for severe supercells thanks in part to the upper level jet stream over the area. There were quite a few hail reports up and down the Front Range with hail as large as 2.75 inches over several counties in the Northeast Plains. Strong winds also accompanied the severe storms yesterday with a gust of 83 mph reported over Kit Carson County. Trees were reported down and blocking the road in Prowers County near Granada. There were two tornadoes reported on Sunday from the same storm. The first touchdown was in the Pawnee National Grasslands and the second near Brush. Unfortunately, there was damage with the second touchdown. There were reports of several trees down, planes flipped over and roofs being blown off homes. Thankfully there were no injuries reported.

As far as heavy rainfall, 0.7 inches fell in a quick 30-minute span over Pueblo County. The larger storms over the eastern plains were producing 1-hour rain rates just over 2 inches. While rivers in the area rose a couple of feet, no flooding was reported as of Monday morning. The eastern plains have been hammered with heavy rainfall the last few days, so I’m sure they’re looking forward to the break the next couple of days as the dry air works its way in from the north.

To see how much precipitation fell in your area, 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 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.

Filed Under: State Precipitation Map ·

SPM 07-29-2018: Scattered Showers and Thunderstorms Impacted Colorado Again

July 29, 2018 by COfloodthreat ·

Issue Date: Sunday, July 29th, 2018
Issue Time: 9:30 AM MDT

Summary:

Yesterday was another wild day of weather for Colorado, with flash flooding, hail, tornadoes, heavy rain, and strong winds peppering the state. The upper-level high positioned to our southwest has been relentless in ushering mid-level moisture our direction, while low-level easterly flow enhances wind shear and moisture for areas east of the Divide. The result for Saturday was plenty of strong-to-severe storms, with the most intense reports summarized below:

Flash Flood: 2 miles N of El Jebel (Eagle County), Wray (Yuma County), 1 mile N of Wray (Yuma County)
2.75 inch diameter hail: 1 mile SE of Julesburg (Sedgwick County), 4 miles N of Logan Corners (Logan County), 6 miles NE of Amherst (Phillips County)
2.5 inch hail: 12 miles SE of Julesburg (Sedgwick County), 5 miles NE of Amherst (Phillips County)
Tornado: 7 miles W of Sterling (Logan County)
77 mph Thunderstorm Wind Gust: 1 mile SE of Julesburg (Sedgwick County)
63 mph Thunderstorm Wind Gust: 3 miles W of Sterling (Logan County)
60 mph Thunderstorm Wind Gust: 10 miles ESE of Whitewater (Mesa County)

For a look at precipitation estimates in your area, please see our 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 accumulation ending time is 7AM of the date shown in the bottom right corner. Also shown optionally are fire burn areas since 2012. The home button in the top left corner resets the map to the original zoom.
Note: We have identified a possible underestimation in QPE over the southwest part of the state. We are working to on this issue, and will provide an update as soon as possible.

Filed Under: State Precipitation Map ·

SPM 07-28-2018: Smorgasbord of Weather Impacts

July 28, 2018 by COfloodthreat ·

Issue Date: Saturday, July 28th, 2018
Issue Time: 9:30 AM MDT

Summary:

The atmosphere was primed yesterday to produce a myriad of weather impacts across Colorado, and it succeeded in fulfilling that potential. Heavy rain, burn scar flash flooding/debris flow, hail up to 3 inches in diameter, wind gusts up to 70 mph, and a few tornadoes were the impacts that Mother Nature threw at the state. As far as flooding flooding goes, in La Plata County, a mud flow was reported in the vicinity of County Road 203 and Tripp Gulch, and in Custer County, flash flooding caused washouts on County Road 387. Some of the more severe hail, wind, and tornado reports are as follows:

68 mph wind gust: 11 miles ESE of Thurman (Kit Carson County)
67 mph wind gust: 1 mile E of Kit Carson (Cheyenne County)
57 mph wind gust: 3 miles SW of Leader (Adams County)
3 inch hail: 5 miles E of Flagler (Kit Carson County)
1.75 inch hail: 3 miles NNE of Wellington Lake (Jefferson County)
1.25 inch hail: 7 miles NE of Ponderosa Park (Elbert County)
Tornado: 7 miles S of Byers (Arapahoe County), 2 miles NE of Ponderosa Park (Elbert County), 11 miles SSE of Leader (Adams County)

For a look at precipitation estimates in your area, please see our 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 accumulation ending time is 6AM of the date shown in the bottom right corner. Also shown optionally are fire burn areas since 2012. The home button in the top left corner resets the map to the original zoom.
Note: We have identified a possible underestimation in QPE over the southwest part of the state. We are working to on this issue, and will provide an update as soon as possible.

Filed Under: State Precipitation Map ·

SPM 07-27-2018: Heavy Rain Caused More Flash Flooding Issues

July 27, 2018 by COfloodthreat ·

Issue Date: Friday, July 27th, 2018
Issue Time: 9:30 AM MDT

Summary:

Moisture remained plentiful east of the Continental Divide yesterday, providing the fuel for another period of scattered showers/thunderstorms producing periods of heavy rainfall; the stronger storms also produced hail (0.25-1.0” in diameter) and wind gusts up to 50-80 mph. With the heavy rainfall came more flash flooding issues, with the following observations being reported to the National Weather Service:

4 miles WSW of Falcon (El Paso County): 10 inches of water over the road at Stetson Hills and Chanhassen.
4 miles W of Falcon (El Paso County): Water up to headlights of cars at Dublin and Mustang Rim. Stalled cars on the road.
4 miles NNE of Peterson AFB (El Paso County): Roadway closed due to flooding at Carefree and Marksheffel.
1 mile ENE of Wray (Yuma County): Street flooding in Wray.
9 miles SSW of Wetmore (Custer County): Highway 165 in Custer County closed due to flooding.

West of the Divide, moisture ticked down as compared to previous days. As a a result, thunderstorm coverage was more isolated-to-widely scattered, with the majority of activity confined, and adjacent, to higher terrain south of I-70. Showers/thunderstorms were garden-variety, producing mainly light-to-moderate rainfall. For a look at precipitation estimates in your area, please see our 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 accumulation ending time is 6AM of the date shown in the bottom right corner. Also shown optionally are fire burn areas since 2012. The home button in the top left corner resets the map to the original zoom.
Note: We have identified a possible underestimation in QPE over the southwest part of the state. We are working to on this issue, and will provide an update as soon as possible.

Filed Under: State Precipitation Map ·