Chase Log: May 3, 2007

Northeast Colorado

CHASE VEHICLE:

CHASE PARTNERS:

Ed Grubb

MILES DRIVEN:

267

TORNADOES SEEN:

1

MAX HAIL SEEN:

1.00

FLOODING SEEN:

None Observed

DAMAGE OBSERVED:

None Observed
Tony Laubach
Tony Laubach
Meteorologist & Storm Chaser

An afternoon jog into northeastern Colorado made for an easy, local setup and a good run before the big weekend in Kansas. The chase started grim as I sat in Platteville watching cu go up and flounder out. Ed Grubb joined me and we finally booked north towards Briggsdale after a tornado-warned cell went off on a line of eastward moving storms. We arrived to gustnado city as spin-up after spin-up ripped through the fields. One of the gustnadoes had a rotating lowering above the swirl, so we figured it made enough of a case to call it a tornado. Other spin-ups were certainly questionable and not as obvious, thus they were not counted. SPC reported 7 tornadoes; we’ll only confirm one as a weak tornado. To clear up a matter, I called the NWS in Boulder to report the spin-ups, calling them simply dust swirls at the leading edge of the line; dubbing them gustnadoes later in my report. Not long after that, an update to the tornado warning included multiple tornado sightings. I did not report tornadoes on that call; just dust swirls/gustnadoes.

After the dust fest, we went east and south into Ft. Morgan where we awaited the core of a final storm which dumped a heavy amount of dime to nickel sized hail on us near the Ft. Morgan airport. We called it a day and returned to Denver, getting back at a nice early 10:30pm.

Sitting just outside of Hudson, CO.
Sitting on the east side of Platteville later in the afternoon… there was a lot of this at the beginning.
Checking data with the high-speed Sprint broadband. My new setup continues to prove very roomy.
Harder convection going up to our north. We finally jump to it after the tornado warning went out.
One of nearly a dozen gustnadoes we encountered near Briggsdale.
One of many gustnadoes caught on film; this one blows across CO-14 east of Briggsdale.

Behind us, a legit landspout spun up to our west.

Later in the evening, the gustnadoes stopped and the structure began.

 

The leading edge of the storms.
Ed scoping the storms from Highway 14 west of New Raymer.
A nice shelf cloud near sunset.
Dark skies over the setting sun.
The northern Colorado gang we ran into and hung around with for a bit.

What I Observed/Documented

TORNADOES:

1

MAX HAIL:

1.00

FLOODING:

None Observed

DAMAGE:

None Observed
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