Alert archive / Colorado / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 180, NWS Denver/Boulder, CO

July 21, 2019Arapahoe County, Douglas County, Elbert County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 21, 2019, 6:53 PM MDT for Arapahoe County, Douglas County, Elbert County, Colorado. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 21, 2019, 6:53 PM MDT (00:53 UTC)
Expired: Jul 21, 2019, 7:45 PM MDT
In force: 52 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Arapahoe County, CO, Douglas County, CO, Elbert County, CO

The radar

The Denver radar (KFTG), 41 km from the middle of the area, began a volume at 00:53 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Denver/Boulder, CO wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 2:17 PM MDT, 4 hours 36 minutes earlier.

Area forecast discussion, Jul 21, 2:17 PM MDT, 4 hours 36 minutes before

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Hazardous weather outlook, Jul 21, 1:27 PM MDT, 5 hours 26 minutes before

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In the hours before

Local storm report, Jul 21, 5:22 PM MDT, 1 hour 31 minutes before

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The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 21, 6:10 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	50 min
Jul 21, 6:40 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	50 min
Jul 21, 8:27 PM MDT	Severe Thunderstorm Warning	BOU	Douglas	20 min
Jul 21, 9:03 PM MDT	Areal Flood Advisory	BOU	Boulder	38 min
Jul 21, 9:20 PM MDT	Flash Flood Warning	BOU	Douglas	2 hr
Jul 21, 9:49 PM MDT	Areal Flood Advisory	BOU	Jefferson	2 hr
Jul 21, 10:34 PM MDT	Areal Flood Advisory	BOU	Adams, Boulder, Broomfield	116 min
Jul 21, 10:59 PM MDT	Special Weather Statement	BOU	Broomfield	46 min
Jul 22, 2:33 PM MDT	Special Weather Statement	BOU	Park	27 min
Jul 22, 3:44 PM MDT	Special Weather Statement	BOU	Boulder	46 min
Jul 22, 4:21 PM MDT	Special Weather Statement	BOU	Weld	24 min
Jul 22, 5:00 PM MDT	Special Weather Statement	BOU	Denver	30 min
Jul 22, 5:07 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Douglas, Elbert	23 min
Jul 22, 5:16 PM MDT	Severe Thunderstorm Warning	BOU	Douglas	29 min
Jul 22, 5:52 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Weld	23 min

Nearby

Severe Thunderstorm Warnings in Colorado, 2019 Every severe thunderstorm warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.