Alert archive / California / Lake Wind Advisories in 2018

Lake Wind Advisory 5, NWS Las Vegas, NV

May 11, 2018San Bernardino County, California; Mohave County, Arizona

NWS Las Vegas, NV issued this lake wind advisory at May 11, 2018, 3:39 AM PDT for San Bernardino County, California; Mohave County, Arizona. It took effect at May 11, 2018, 9:01 AM PDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: May 11, 2018, 3:39 AM PDT (10:39 UTC)
In effect from: May 11, 2018, 9:01 AM PDT
Expired: May 11, 2018, 11:00 PM PDT
In force: 14 hr
Issued by: NWS Las Vegas, NV

Counties Mohave County, AZ, San Bernardino County, CA

The radar

The Las Vegas radar (KESX), 48 km from the middle of the area, began a volume at 10:42 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 00:00Z, 10.7 hours before the alert went out and 133 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: 4392 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 60 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 lake wind advisory 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 lake wind advisory went out at May 10, 2:50 PM PDT, 12 hours 49 minutes earlier.

Area forecast discussion, May 10, 2:50 PM PDT, 12 hours 49 minutes before

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Nearby

Lake Wind Advisories in California, 2018 Lake Wind Advisories in Arizona, 2018 Every lake wind advisory in 2018

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.