Alert archive / Nevada / Flash Flood Watches in 2006

Flash Flood Watch 3, NWS Las Vegas, NV

July 4, 2006Clark County, Lincoln County, Nye County, Nevada; Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood watch at Jul 4, 2006, 11:03 AM PDT for Clark County, Lincoln County, Nye County, Nevada; Mohave County, Arizona. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jul 4, 2006, 11:03 AM PDT (18:03 UTC)
Expired: Jul 4, 2006, 8:36 PM PDT
In force: 10 hr
Issued by: NWS Las Vegas, NV
Flood severity: None

Counties Mohave County, AZ, Clark County, NV, Lincoln County, NV, Nye County, NV

The radar

The Las Vegas radar (KESX), 134 km from the middle of the area, began a volume at 18:06 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

Edwards AFB, CA (KEDW), launched 12:00Z, 6.1 hours before the alert went out and 334 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: 3331 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 34 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 Las Vegas, NV wrote its last area forecast discussion before this flash flood watch went out at Jul 4, 10:25 AM PDT, 38 minutes earlier.

Area forecast discussion, Jul 4, 10:25 AM PDT, 38 minutes before

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The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 4, 3:14 PM PDT	Severe Thunderstorm Warning	VEF	Clark	46 min
Jul 4, 1:29 PM PDT	Flash Flood Warning	VEF	San Bernardino	2 hr
Jul 4, 4:02 PM PDT	Severe Thunderstorm Warning	VEF	San Bernardino	25 min
Jul 4, 1:23 PM PDT	Flash Flood Warning	VEF	Mohave	52 min

Nearby

Flash Flood Watches in Nevada, 2006 Flash Flood Watches in Arizona, 2006 Flash Flood Watches in California, 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.