Flash Flood Watch 4, NWS Las Vegas, NV

Issued

Jul 22, 2021, 10:18 AM MST (17:18 UTC)

In effect from

Jul 22, 2021, 12:00 PM MST

Expired

Jul 22, 2021, 9:00 PM MST

In force

9 hr

Issued by

NWS Las Vegas, NV

Flood severity

None

Counties Mohave County, AZ, Clark County, NV, Lincoln County, NV, Nye County, NV

The Las Vegas radar (KESX), 134 km from the middle of the area, began a volume at 17:23 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.

014 
WGUS65 KVEF 221718
FFAVEF

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Las Vegas NV
1018 AM PDT Thu Jul 22 2021

.Conditions will be favorable today for extensive flash flooding as 
a disturbance aloft rotates across southern Nevada and northwest 
Arizona this afternoon. This will combine with abundant moisture 
triggering scattered to numerous thunderstorms capable of heavy 
rainfall.

AZZ001-003-036-NVZ015>022-230130-
/O.NEW.KVEF.FF.A.0004.210722T1900Z-210723T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northwest Plateau-Northwest Deserts-Lake Mead National Recreation
Area-Lincoln County-Northeast Clark County-Western Clark and
Southern Nye County-Sheep Range-Spring Mountains-Red Rock Canyon-Las
Vegas Valley-Lake Mead National Recreation Area-Southern Clark
County-
Including the cities of Western Grand Canyon, Rachel, Laughlin, 
Colorado City, Hiko, Indian Springs, Yucca, Henderson, Hayford Pk, 
Panaca, The Town Of Mt Charleston, Moapa, Pahrump, Searchlight, 
Amargosa Valley, Desert Rock, Wikieup, Dolan Springs, North Las 
Vegas, Cal-Nev-Ari, Bullhead City, Golden Valley, Primm, Mt 
Trumbull, Oatman, Alamo, Overton, Boulder City, Tuweep, Caliente, 
Hoover Dam, Mohave Valley, Pipe Spring National Monument, Pioche, 
Valentine, Las Vegas, Mesquite, Red Rock Canyon, and Kingman
1018 AM MST Thu Jul 22 2021 /1018 AM PDT Thu Jul 22 2021/

...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM MST/9 PM PDT/ THIS 
EVENING...

The National Weather Service in Las Vegas has issued a

* Flash Flood Watch for portions of northwest Arizona and Nevada, 
  including the following areas, in northwest Arizona, Lake Mead 
  National Recreation Area, Northwest Deserts and Northwest Plateau. 
  In Nevada, Lake Mead National Recreation Area, Las Vegas Valley, 
  Lincoln County, Northeast Clark County, Sheep Range, Southern 
  Clark County, Spring Mountains-Red Rock Canyon and Western Clark 
  and Southern Nye County.

* Until 9 PM MST/9 PM PDT/ this evening.

* * Scattered to numerous thunderstorms capable of heavy rainfall 
  are expected to develop around Clark and Lincoln counties of 
  southern Nevada and Mohave County in northwest Arizona through 
  this afternoon and early evening.

* Storms will move slowly toward the northeast and may redevelop and 
  move over the same area multiple times.



* Burn scars from recent wildfires will be especially prone to flash 
  flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared to take action should Flash Flood Warnings be issued. 
Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

$$

JA

676 
WGUS65 KVEF 230125
FFAVEF

Flood Watch
National Weather Service Las Vegas NV
625 PM PDT Thu Jul 22 2021

AZZ001-003-036-NVZ015>022-230400-
/O.CON.KVEF.FF.A.0004.000000T0000Z-210723T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northwest Plateau-Northwest Deserts-Lake Mead National Recreation
Area-Lincoln County-Northeast Clark County-Western Clark and
Southern Nye County-Sheep Range-Spring Mountains-Red Rock Canyon-Las
Vegas Valley-Lake Mead National Recreation Area-Southern Clark
County-
Including the cities of Western Grand Canyon, Rachel, Laughlin, 
Colorado City, Hiko, Indian Springs, Yucca, Henderson, Hayford Pk, 
Panaca, The Town Of Mt Charleston, Moapa, Pahrump, Searchlight, 
Amargosa Valley, Desert Rock, Wikieup, Dolan Springs, North Las 
Vegas, Cal-Nev-Ari, Bullhead City, Golden Valley, Primm, Mt 
Trumbull, Oatman, Alamo, Overton, Boulder City, Tuweep, Caliente, 
Hoover Dam, Mohave Valley, Pipe Spring National Monument, Pioche, 
Valentine, Las Vegas, Mesquite, Red Rock Canyon, and Kingman
625 PM MST Thu Jul 22 2021 /625 PM PDT Thu Jul 22 2021/

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 9 PM THIS EVENING...

The Flash Flood Watch continues for

* Portions of northwest Arizona and Nevada, including the following 
  areas, in northwest Arizona, Lake Mead National Recreation Area, 
  Northwest Deserts and Northwest Plateau. In Nevada, Lake Mead 
  National Recreation Area, Las Vegas Valley, Lincoln County, 
  Northeast Clark County, Sheep Range, Southern Clark County, Spring 
  Mountains-Red Rock Canyon and Western Clark and Southern Nye 
  County.

* Until 9 PM MST/9 PM PDT/ this evening.

* The majority of the thunderstorm and heavy rainfall has ended but 
  isolated development is still possible and could result in areas 
  of flash flooding through 9PM.

* Burn scars from recent wildfires will be especially prone to flash 
  flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared to take action should Flash Flood Warnings be issued. 
Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

$$

TB

291 
WGUS65 KVEF 230400
FFAVEF

Flood Watch
National Weather Service Las Vegas NV
900 PM PDT Thu Jul 22 2021

AZZ001-003-036-NVZ015>022-230500-
/O.EXP.KVEF.FF.A.0004.000000T0000Z-210723T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northwest Plateau-Northwest Deserts-
Lake Mead National Recreation Area-Lincoln County-
Northeast Clark County-Western Clark and Southern Nye County-
Sheep Range-Spring Mountains-Red Rock Canyon-Las Vegas Valley-
Southern Clark County-
900 PM PDT Thu Jul 22 2021 /900 PM MST Thu Jul 22 2021/

...FLASH FLOOD WATCH WILL EXPIRE AT 9 PM PDT...

The Flash Flood Watch for portions of northwest Arizona and
Nevada will expire as scheduled at 9 PM PDT /9 PM MST/ this 
evening. Isolated showers and thunderstorms are still possible
this evening, but flash flooding risk is expected to be minimal or
very isolated. 

$$

TB3

Flash Flood Watches in Nevada, 2021Flash Flood Watches in Arizona, 2021Every flash flood watch in 2021

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.