Alert archive / Colorado / Flash Flood Watches in 2006

Flash Flood Watch 1, NWS Denver/Boulder, CO

July 3, 200615 counties in Colorado

NWS Denver/Boulder, CO issued this flash flood watch at Jul 3, 2006, 12:55 PM MDT for 15 counties in Colorado. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Jul 3, 2006, 12:55 PM MDT (18:55 UTC)
Expired: Jul 3, 2006, 8:09 PM MDT
In force: 7 hr
Issued by: NWS Denver/Boulder, CO
Flood severity: None

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, Jefferson County, CO, Larimer County, CO, Lincoln County, CO, Morgan County, CO, Park County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 24 km from the middle of the area, began a volume at 18:57 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

Denver, CO (KDNR), launched 12:00Z, 6.9 hours before the alert went out and 136 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: 72 J/kg
Mixed-layer CIN: -224 J/kg
Mixed-layer LCL: 1192 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 33 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 flash flood watch 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 flash flood watch went out at Jul 3, 1:35 AM MDT, 11 hours 20 minutes earlier.

Area forecast discussion, Jul 3, 1:35 AM MDT, 11 hours 20 minutes before

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Hazardous weather outlook, Jul 3, 10:48 AM MDT, 2 hours 7 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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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 2, 7:07 PM MDT	Severe Thunderstorm Warning	BOU	Washington	38 min

Nearby

Flash Flood Watches in Colorado, 2006 Every flash flood watch in 2006

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.