Issue Date: Monday, June 1st, 2020
Issue Time: 9:55AM MDT

Summary:

A bit of drying under the ridge with more westerly flow aloft helped decrease the rainfall threat yesterday. With a similar pattern over the last few days, storms were diurnally driven beginning in the early afternoon. Yesterday, storms favored the eastern foothills with lighter rainfall over western Colorado. A strong gust was recorded over Logan County associated with a storm becoming downdraft dominate around 8PM (58 mph). Westerly flow helped push a few of the storms into the adjacent plains, but they mostly only survived over the Palmer and western Raton Ridge (convergence on the higher elevations). Fort Collins got a nice storm with totals on their mesonet up to 0.47 inches. They’ve had about 2 inches of rainfall over the last 30 days. Some stronger storms were also present near the Air Force Academy/Fort Carson areas where USGS gauges recorded just over a half inch of rainfall in 20 minutes.

Back west, the eastern San Juan Mountains got some nice accumulations with the Del Norte area receiving about a half inch of rain. Even the edges of the San Luis Valley received some measurable rainfall, but Alamosa (interior) only received about 0.05 inches. Storms started to come to an end around 11PM, which is a couple hours after instability began to drop off. Flooding was not reported as of this morning.

For precipitation estimates in your neighborhood over the last 24-hours, scroll down to the State Precipitation Map below.

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Issue Date: Sunday, May 31st, 2020
Issue Time: 10:05AM MDT

Summary:

It was setting up to be heavy rainfall day with dew points in the 50Fs and slow steering winds, but the rain rates over Pueblo County were more than impressive. It looks like radar estimated up to 3 inches of rain in both Pueblo and El Paso! The Young Hallow station at Fort Carson was the day’s big winner. It recorded 1.80 inches for the day with 0.72 inches falling in 10 min, which is between at 10-year and 25-year event. A CoCoRaHS station in downtown Pueblo recorded 1.88 inches. Not surprisingly, this caused some flooding issues:

• Roads washed out in Midway Ranches neighborhood
• Water overtopping I-25 at mile marker 104
• Water breaching banks along Four Mile Creek
• 3 to 4 inch deep water flowing over Pueblo Blvd and Highway 50
• Damage to the shoulder of I-25
• Multiple manhole covers dislodged
• Cars stalled in flood waters

Over the Front Range, storms remained somewhat capped during the afternoon hours, which kept the flood threat lower. None the less, MRMS and Stage IV QPE had between 1 and 1.5 inches of rain along the Divide in Larimer, Boulder, Gilpin and Clear Creek Counties. These estimates were both a little higher than MetStorm Live (below). Hail was also reported in Fort Collins around 6:30PM that was just under an inch in diameter with a stronger storm that formed and dropped around a half an inch of rain. The San Juan Mountains got between 0.25 to 1 inch of rainfall, as well as small hail and wind gusts (downdraft outflow) around 50 mph.

For precipitation estimates in your neighborhood over the last 24-hours, scroll down to the State Precipitation Map below. Reminder, you can also report any flooding to our website: https://archive-coftb.dewberryanalytics.com/?page_id=11165

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Issue Date: Saturday, May 30th, 2020
Issue Time: 10:25AM MDT

Summary:

Better moisture was available for the afternoon upslope flow storms that popped yesterday. Storm motion was similar to the previous two days, which meant the big winners were northeast facing slopes over eastern Colorado. Nearly stationary storms/trailing storms helped increase totals over the Southeast Mountains. Max 1-hour rain rates were up to 0.25 inches with 24-hour totals right around 1 inch in Saguache County near the Deckers burn area. A Flash Flood Warning was issued for the Spring Creek burn area at 5:40PM where a spotter recorded 0.56 inches in a 45-minute period. As of this morning, no flooding had been reported.

As storms moved in the adjacent plains, they became sparser in coverage with a nice storm forming over the Greenwood Village area in the afternoon, and an ALERT gage reported 0.67 inches of rainfall near Quincy and Colorado Blvd. Storms also rolled off the Cheyenne Ridge into the Northeast Plains overnight. Totals just over 0.50 inches were estimated by radar.

Over western Colorado, the boundary layer was still dry. This caused some more gusty outflow winds, and the ASOS at the Durango airport recording a 52-mph wind gust. Rainfall was confined to the higher terrains with the highest totals around 0.25 inches.

For precipitation estimates in your neighborhood over the last 24-hours, scroll down to the State Precipitation Map below.

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Issue Date: Friday, May 29th, 2020
Issue Time: 10:20AM

Summary:

Temperatures climbed to well-above seasonal normal west of the Continental Divide on Thursday, under a stout upper-level ridge over our state. Lower elevation locations like Grand Junction topped out over 90F, which is at about 10F above normal for late May. Even the highest elevations, like Copper Mountain, approached 60F. There was also enough moisture for scattered shower and storm activity, mostly relegated to the higher elevations. Gusty winds were also observed across western areas with gusts of 59mph and 57mph reported at ASOS stations in La Plata and Montezuma counties, respectively. Cooler conditions prevailed east of the Continental Divide with some isolated storms crossing the landscape. Although there were some brief heavy downpours across the state, total rainfall was limited to about 0.5 inches.

For precipitation estimates in your neighborhood over the last 72-hours, scroll down to the State Precipitation Map below.

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