Alert archive / Nevada / Flash Flood Warnings in 2003

Flash Flood Warning 23, NWS Las Vegas, NV

August 15, 2003Lincoln County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Aug 15, 2003, 9:45 PM PDT for Lincoln County, Nevada. It was in force for 105 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: Aug 15, 2003, 9:45 PM PDT (04:45 UTC)
Expired: Aug 15, 2003, 11:30 PM PDT
In force: 105 min
Issued by: NWS Las Vegas, NV
Area: Counties, with a storm outline in the text

County Lincoln County, NV

The radar

The Cedar City radar (KICX), 174 km from the middle of the area, began a volume at 04:45 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, 4.8 hours before the alert went out and 144 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: 16 J/kg
Mixed-layer CIN: -150 J/kg
Mixed-layer LCL: 2757 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS55 KVEF 160446
FFWVEF
NVC017-160630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
945 PM PDT FRI AUG 15 2003

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL LINCOLN COUNTY IN SOUTH CENTRAL NEVADA

* UNTIL 1130 PM PDT

* AT 936 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN FROM NEAR CALIENTE TO 
  5 MILES EAST OF ALAMO... MOVING SOUTH AT 10 MPH. 

THESE STORMS WILL MOVE OVER AREAS THAT HAVE ALREADY EXPERIENCED 
HEAVY RAINFALL AND FLASH FLOODING EARLIER THIS EVENING. RADAR 
ESTIMATES INDICATED BETWEEN 2 AND 2.5 INCHES OF ADDITIONAL RAINFALL 
HAS OCCURRED WITH THIS LINE OF THUNDERSTORMS. FLOODING WILL REMAIN A 
THREAT AFTER THE RAINS HAVE FALLEN AND MANY MILES FROM THE RAINFALL 
AREA.

THIS FLASH FLOOD WARNING REPLACES AN EARLIER FLASH FLOOD WARNING FOR 
LINCOLN COUNTY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT
ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY
FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT AND SEEK
HIGHER GROUND.

LAT...LON 3738 11510 3719 11487 3781 11433 3784 11477

$$

JACQUES

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 15, 6:52 PM PDT	Flash Flood Warning	VEF	Lincoln	3 hr
Aug 15, 9:14 PM PDT	Severe Thunderstorm Warning	VEF	Clark	46 min

Nearby

Flash Flood Warnings in Nevada, 2003 Every flash flood warning in 2003

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.