Alert archive / Colorado / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 3, NWS Denver/Boulder, CO

May 15, 1999Morgan County, Weld County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at May 15, 1999, 8:28 PM MDT for Morgan County, Weld County, Colorado. It was in force for 47 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 15, 1999, 8:28 PM MDT (02:28 UTC)
Expired: May 15, 1999, 9:15 PM MDT
In force: 47 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Morgan County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 79 km from the middle of the area, began a volume at 02:28 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 was reported inside it

Time	Report	Where
May 15, 8:50 PM MDT	Hail 1.75	Orchard, CO
May 15, 9:00 PM MDT	Hail 1.75	Goodrich, CO
May 15, 9:15 PM MDT	Hail 2.75	Ft Morgan, CO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 May 15, 2:50 PM MDT, 5 hours 38 minutes earlier.

Area forecast discussion, May 15, 2:50 PM MDT, 5 hours 38 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
May 15, 9:12 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	48 min
May 15, 9:56 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	34 min
May 16, 3:15 PM MDT	Tornado Warning	BOU	Elbert	35 min
May 16, 3:55 PM MDT	Tornado Warning	BOU	Elbert	30 min
May 16, 4:47 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	43 min
May 16, 5:38 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	37 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1999 Every severe thunderstorm warning in 1999

Sources

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