Alert archive / Colorado / Red Flag Warnings in 2024

Red Flag Warning 18, NWS Denver/Boulder, CO

June 16, 202416 counties in Colorado

NWS Denver/Boulder, CO issued this red flag warning at Jun 16, 2024, 2:42 PM MDT for 16 counties in Colorado. It took effect at Jun 17, 2024, 11:00 AM MDT. It was in force for 10 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 16, 2024, 2:42 PM MDT (20:42 UTC)
In effect from: Jun 17, 2024, 11:00 AM MDT
Expired: Jun 17, 2024, 9:00 PM MDT
In force: 10 hr
Issued by: NWS Denver/Boulder, CO

Counties Adams County, CO, Arapahoe County, CO, Boulder County, CO, Broomfield County, CO, Clear Creek County, CO, Denver County, CO, Douglas County, CO, Elbert County, CO, Gilpin County, CO, Grand County, CO, Jefferson County, CO, Lincoln County, CO, Morgan County, CO, Park County, CO, Summit County, CO, Washington County, CO

The radar

The Denver radar (KFTG), 29 km from the middle of the area, began a volume at 20:44 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.

The nearest sounding before it

Grand Junction, CO (KGJT), launched 12:00Z, 8.7 hours before the alert went out and 318 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 4035 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag 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 red flag warning went out at Jun 16, 11:52 AM MDT, 2 hours 50 minutes earlier.

Area forecast discussion, Jun 16, 11:52 AM MDT, 2 hours 50 minutes before

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Hazardous weather outlook, Jun 16, 11:01 AM MDT, 3 hours 41 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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
Jun 15, 6:19 PM MDT	Special Weather Statement	BOU	Adams	26 min
Jun 15, 6:32 PM MDT	Special Weather Statement	BOU	Morgan	28 min
Jun 15, 6:52 PM MDT	Special Weather Statement	BOU	Washington	23 min
Jun 15, 7:15 PM MDT	Special Weather Statement	BOU	Washington	45 min
Jun 15, 7:42 PM MDT	Severe Thunderstorm Warning	BOU	Washington	33 min
Jun 15, 7:54 PM MDT	Severe Thunderstorm Warning	BOU	Washington	36 min
Jun 15, 8:07 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BOU	Washington	23 min
Jun 15, 8:37 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Phillips	38 min
Jun 16, 2:42 PM MDT	Fire Weather Watch	BOU	Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 4 more	12 hr

Nearby

Red Flag Warnings in Colorado, 2024 Every red flag warning in 2024

Sources

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