Alert archive / Nevada / Flash Flood Watches in 2019

Flash Flood Watch 3, NWS Las Vegas, NV

March 5, 2019Clark County, Nye County, Nevada; Inyo County, San Bernardino County, California

NWS Las Vegas, NV issued this flash flood watch at Mar 5, 2019, 9:26 AM PST for Clark County, Nye County, Nevada; Inyo County, San Bernardino County, California. It took effect at Mar 5, 2019, 10:00 PM PST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued: Mar 5, 2019, 9:26 AM PST (17:26 UTC)
In effect from: Mar 5, 2019, 10:00 PM PST
Expired: Mar 6, 2019, 2:07 PM PST
In force: 16 hr
Issued by: NWS Las Vegas, NV
Flood severity: None

Counties Inyo County, CA, San Bernardino County, CA, Clark County, NV, Nye County, NV

The radar

The Las Vegas radar (KESX), 146 km from the middle of the area, began a volume at 17:27 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

Las Vegas, NV (KVEF), launched 12:00Z, 5.4 hours before the alert went out and 65 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: 1903 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 127 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 Mar 5, 3:35 AM PST, 5 hours 51 minutes earlier.

Area forecast discussion, Mar 5, 3:35 AM PST, 5 hours 51 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
Mar 5, 2:04 PM PST	Wind Advisory	VEF	Mohave	28 hr

Nearby

Flash Flood Watches in Nevada, 2019 Flash Flood Watches in California, 2019 Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.