Tag Archives: funnel clouds

Severe weather pays a visit to Thornton; Time lapse video captures hail

The Thornton Multipurpose Fields are covered with water from rain and hail after severe weather moved through Thornton. (City of Thornton)
The Thornton Multipurpose Fields are covered with water from rain and hail after severe weather moved through Thornton. (City of Thornton)

It was quite an eventful afternoon in the Denver metro area as thunderstorms spawned funnel clouds and massive amounts of hail.  ThorntonWeather.com’s webcams captured part of the action as the hail piled up enough to make it look like snow.

Our east webcam started to show some light precipitation before 1:00pm and before 3:00pm hail was falling.  Mercifully the size of the hail stones remained small but at our location we received a good couple of inches of accumulation.  Watch the time lapse video below.

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In the area of I-25 and 120th Avenue hail 4 to 5 inches was seen.  At the Thornton Multipurpose Fields at 108th and Colorado Blvd where ThorntonFest is to be held this Saturday, the fields were extensively flooded.  Images posted by the city to its Facebook page show the mess the rain and hail created.

Funnel clouds were seen across much of the north metro area, mainly in unincorporated Adams County just south of Thornton.  As of this writing, no actual tornadoes have been reported.

The Front Range is just beginning to enter its severe weather season.  Unfortunately neither the City of Thornton or Adams County provide any sort of warning system to protect residents against the severe weather threat.

Thornton did recently look into alert systems but decided against deploying one.  Instead it is waiting for the federal government to deploy its Personal Localized Alerting Network (PLAN).  This is disappointing as there are no guarantees that PLAN will launch on time in 2012 or if it will work as advertised.  The vast majority of Colorado counties already have systems in place but Thornton and Adams County residents are left without.

Thunderstorm brings funnel clouds, severe rain

An exciting evening in Thornton as far as the weather goes.  Just before 6:00pm Wednesday a slow-moving severe thunderstorm over north Thornton brought everything from funnel clouds to lightning to torrential rain. 

The Thornton radar image when the storm was at its height. The storm dumped over 2" of rain in 1 hour.
The Thornton radar image when the storm was at its height. The storm dumped over 2" of rain in 1 hour.
Rain began falling in the area of 120th and Colorado Blvd at 6:00pm and over the next 70 minutes dumped 2.36″ of precipitation.  Lightning and thunder were predominant for the entire time as well.  At 6:40 the National Weather Service issued a Tornado Warning when several funnel clouds were spotted between south Thornton and Dacono.  These slow moving storms presented a clear and present danger but appear to have passed relatively uneventful.  Minor street flooding has been reported in some parts of Thornton but otherwise little damage.

As of this writing, a Flood Advsiory and Flash Flood Watch remains in effect for much of the Denver metro area.  Radar does indicate the storm is deteriorating and things should beging to settle down now. 

As always, please stay tuned to ThorntonWeather.com for the latest.  Be sure to monitor our Warnings and Advsiories page for realtime updates on current watches and warnings.