Alert archive / Nevada / Flash Flood Warnings in 2003
Flash Flood Warning 31, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 19, 2003, 10:25 PM PDT for Clark County, Nevada. It was in force for 6 hr. 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 19, 2003, 10:25 PM PDT (05:25 UTC)
- Expired
- Aug 20, 2003, 4:15 AM PDT
- In force
- 6 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Counties, with a storm outline in the text
County Clark County, NV
The radar
The Las Vegas radar (KESX), 54 km from the middle of the area, began a volume at 05:29 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, 5.4 hours before the alert went out and 92 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.
- Mixed-layer CAPE
- 111 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 3084 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KVEF 200524 FFWVEF NVC003-201115- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1025 PM PDT TUE AUG 19 2003 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING EXTENDED FOR... CENTRAL CLARK COUNTY IN SOUTHERN NEVADA * UNTIL 415 AM PDT * AT 1016 PM PDT...THE LAS VEGAS FIRE DEPARTMENT REPORTED THAT FLOODING CONTINUED IN NORTHWEST LAS VEGAS...MAINLY ALONG SIDE STREETS OFF OF GOWAN...ALEXANDER...AND CRAIG. ALSO NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT A FEW NEW THUNDERSTORMS HAD DEVELOPED OVER HENDERSON. SPOTTERS REPORTED THAT RAINFALL FROM THESE NEW STORMS HAD PRODUCED STREET FLOODING WITH WATER OVER THE CURBS AT THE INTERSECTION OF BOULDER HIGHWAY AND HORIZON RIDGE ROAD. * FLASH FLOODING WILL OCCUR IN... NORTHWEST LAS VEGAS THROUGH 4 AM PDT HENDERSON THROUGH 1 AM PM PDT THIS IS A MAJOR...ONGOING FLASH FLOOD AND TRAVEL SHOULD NOT BE ATTEMPTED. IF YOU MUST TRAVEL AND ENCOUNTER A FLOODED ROADWAY...TURN AROUND...DONT DROWN. REMEMBER...MOST FLASH FLOOD RELATED DEATHS OCCUR IN MOTOR VEHICLES. ALSO...DO NOT WALK IN FLOOD WATER AS THE SWIFTLY MOVING WATER CAN EASILY KNOCK YOU OFF YOUR FEET AND SWEEP YOU AWAY. LAT...LON 3611 11532 3597 11512 3615 11482 3632 11529 $$
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 5:44 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Aug 19, 8:20 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Aug 19, 9:47 PM PDT | Flash Flood Warning | VEF | Lincoln | 118 min |
| Aug 19, 11:43 PM PDT | Flash Flood Warning | VEF | Lincoln | 2 hr |
Nearby
Flash Flood Warnings in Nevada, 2003Every 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.