Alert archive / Arizona / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 8, NWS Las Vegas, NV

July 13, 2002Mohave County, Arizona; Clark County, Nevada

NWS Las Vegas, NV issued this severe thunderstorm warning at Jul 13, 2002, 7:33 PM MST for Mohave County, Arizona; Clark County, Nevada. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 13, 2002, 7:33 PM MST (02:33 UTC)
Expired: Jul 13, 2002, 8:30 PM MST
In force: 57 min
Issued by: NWS Las Vegas, NV
Area: Counties, with a storm outline in the text

Counties Mohave County, AZ, Clark County, NV

The radar

The Las Vegas radar (KESX), 69 km from the middle of the area, began a volume at 02:36 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

Mercury/Desert R, NV (KDRA), launched 00:00Z, 2.6 hours before the alert went out and 172 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: 4602 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KVEF 140233 CCA
SVRVEF
AZC015-NVC003-140330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
731 PM MST SAT JUL 13 2002

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA
  THIS INCLUDES THE FOLLOWING LOCATIONS...SOUTH COVE...MEADVIEW
  EAST CENTRAL CLARK COUNTY IN SOUTHERN NEVADA
  THIS INCLUDES THE FOLLOWING LOCATIONS...OVERTON BEACH...ECHO BAY

* UNTIL 830 PM MST (830 PM PDT)

* AT 730 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG
  THUNDERSTORM WINDS MOVING NORTH AT 50 MPH INTO THE EASTERN ARM OF
  LAKE MEAD BETWEEN TEMPLE BAR AND MEADVIEW.

* THE THUNDERSTORM WINDS WILL BE...
  NEAR SOUTH COVE AT 740 PM MST
  NEAR ECHO BAY AT 755 PM PDT
  NEAR OVERTON BEACH AT 800 PM PDT

STRONG AND DAMAGING WINDS ARE LIKELY WITH THIS STORM...BUT THERE WILL
BE LITTLE RAIN. VISIBILITIES MAY BE REDUCED TO ZERO FOR A SHORT 
TIME. PEOPLE IN THE PATH OF THIS STORM SHOULD FIND SHELTER UNTIL IT
PASSES.

LAT...LON 3569 11431 3579 11380 3653 11420 3637 11456

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 6:42 PM MST	Severe Thunderstorm Warning	VEF	Mohave	63 min
Jul 13, 7:03 PM MST	Severe Thunderstorm Warning	VEF	Mohave	57 min
Jul 13, 7:31 PM MST	Severe Thunderstorm Warning	VEF	Mohave	59 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2002 Severe Thunderstorm Warnings in Nevada, 2002 Every severe thunderstorm warning in 2002

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.