Alert archive / Nevada / Flash Flood Warnings in 2018
Flash Flood Warning 151, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Oct 4, 2018, 12:11 AM PDT for Clark County, Nevada; San Bernardino County, California. It was in force for 3 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
- Oct 4, 2018, 12:11 AM PDT (07:11 UTC)
- Expired
- Oct 4, 2018, 3:15 AM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
Counties San Bernardino County, CA, Clark County, NV
The radar
The Las Vegas radar (KESX), 56 km from the middle of the area, began a volume at 07:16 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, 7.2 hours before the alert went out and 132 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
- 65 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 2880 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
986
WGUS55 KVEF 040711
FFWVEF
CAC071-NVC003-041015-
/O.NEW.KVEF.FF.W.0151.181004T0711Z-181004T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
1211 AM PDT THU OCT 4 2018
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Northeastern San Bernardino County in southern California...
South central Clark County in southern Nevada...
* Until 315 AM PDT.
* At 1209 AM PDT, Doppler radar indicated thunderstorms producing
heavy rain across eastern areas of the Mojave National Preserve.
Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Searchlight, Mitchell Caverns, Nipton Road Mile Marker 3, Black
Canyon Equestrian Campground, Cal-Nev-Ari and Hole In The Wall
Campground.
LAT...LON 3538 11482 3497 11501 3495 11515 3482 11524
3482 11567 3539 11513 3553 11530 3558 11526
3551 11484
$$
Boothe1 follow-up statement
390
WGUS75 KVEF 041007
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
307 AM PDT THU OCT 4 2018
CAC071-NVC003-041016-
/O.EXP.KVEF.FF.W.0151.000000T0000Z-181004T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-Clark NV-
307 AM PDT THU OCT 4 2018
...THE FLASH FLOOD WARNING FOR NORTHEASTERN SAN BERNARDINO AND SOUTH
CENTRAL CLARK COUNTIES WILL EXPIRE AT 315 AM PDT...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3538 11482 3497 11501 3495 11515 3482 11524
3482 11567 3539 11513 3553 11530 3558 11526
3551 11484
$$
JSThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 3, 5:26 PM PDT | Areal Flood Advisory | VEF | Lincoln | 3 hr |
| Oct 3, 7:22 PM PDT | Areal Flood Advisory | VEF | Lincoln | 5 hr |
| Oct 3, 9:30 PM PDT | Flash Flood Warning | VEF | Clark | 5 hr |
| Oct 3, 10:20 PM PDT | Areal Flood Advisory | VEF | Nye | 79 min |
| Oct 4, 1:53 AM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Oct 3, 5:46 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 119 min |
| Oct 3, 6:06 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Oct 3, 6:18 PM PDT | Severe Thunderstorm Warning | VEF | Inyo, San Bernardino | 42 min |
| Oct 3, 7:54 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 2 hr |
| Oct 3, 8:18 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 24 min |
| Oct 3, 8:55 PM PDT | Flash Flood Warning | VEF | San Bernardino | 5 hr |
| Oct 3, 9:54 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Oct 3, 10:16 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 2 hr |
| Oct 3, 10:47 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in Nevada, 2018Flash Flood Warnings in California, 2018Every flash flood warning 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.