Alert archive / Nevada / Flash Flood Warnings in 2017
Flash Flood Warning 98, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 29, 2017, 1:48 PM PDT for Clark County, Nevada. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 29, 2017, 1:48 PM PDT (20:48 UTC)
- Expired
- Aug 29, 2017, 4:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Clark County, NV
The radar
The Las Vegas radar (KESX), 91 km from the middle of the area, began a volume at 20:51 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 29, 2:30 PM PDT | FLASH FLOOD | 7 E Mt. Charleston, NV | PUBLIC WORKS REPORTS DEBRIS IN ROADS IN MT CHARLESTON SUB-DIVISION VIA WEBEOC. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 8.8 hours before the alert went out and 10 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
- 144 J/kg
- Mixed-layer CIN
- -344 J/kg
- Mixed-layer LCL
- 3484 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
960
WGUS55 KVEF 292048
FFWVEF
NVC003-292345-
/O.NEW.KVEF.FF.W.0098.170829T2048Z-170829T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
148 PM PDT TUE AUG 29 2017
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
West central Clark County in southern Nevada...
* Until 445 PM PDT
* At 144 PM PDT, Doppler radar continued to indicate heavy rain from
thunderstorms and emergency management officials reported a few
inches of debris flowing across Kyle and Lee Canyon roads in the
Spring Mountains. Between 1 and 2 inches of rain has already
fallen and more rain can be expected leading to increased flash
flooding.
* Some locations that will experience flooding include...
Rainbow Canyon and sections of roads in Kyle Canyon and Lee Canyon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3628 11543 3619 11561 3626 11579 3637 11570
3641 11556
$$
JA1 follow-up statement
819
WGUS75 KVEF 292230
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
330 PM PDT TUE AUG 29 2017
NVC003-292239-
/O.CAN.KVEF.FF.W.0098.000000T0000Z-170829T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark NV-
330 PM PDT TUE AUG 29 2017
...THE FLASH FLOOD WARNING FOR WEST CENTRAL CLARK COUNTY IS
CANCELLED...
The heavy rain has on Mount Charleston ended. Flood waters have
receded. Flooding is no longer expected to pose a threat. Please
continue to heed any remaining road and campground closures.
LAT...LON 3628 11543 3619 11561 3626 11579 3637 11570
3641 11556
$$
AAThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 1:22 PM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
Nearby
Flash Flood Warnings in Nevada, 2017Every flash flood warning in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.