Alert archive / Nevada / Flash Flood Warnings in 2014

Flash Flood Warning 29, NWS Las Vegas, NV

July 10, 2014Clark County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jul 10, 2014, 3:05 PM PDT for Clark County, Nevada. 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: Jul 10, 2014, 3:05 PM PDT (22:05 UTC)
Expired: Jul 10, 2014, 6:00 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), 23 km from the middle of the area, began a volume at 22:07 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 12:00Z, 10.1 hours before the alert went out and 117 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: 19 J/kg
Mixed-layer CIN: -313 J/kg
Mixed-layer LCL: 2734 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 21 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.

889 
WGUS55 KVEF 102205
FFWVEF
NVC003-110100-
/O.NEW.KVEF.FF.W.0029.140710T2205Z-140711T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
305 PM PDT THU JUL 10 2014

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL CLARK COUNTY IN SOUTHERN NEVADA...

* UNTIL 600 PM PDT/600 PM MST/

* AT 300 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  FLASH FLOODING FROM A SERIES OF THUNDERSTORMS ALONG HIGHWAY 
  164...SEARCHLIGHT...AND COTTONWOOD COVE ROAD...EASTWARD DOWN TO 
  THE COTTONWOOD COVE MARINA...THESE STORMS ARE MOVING NORTH AT 10 
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  COTTONWOOD COVE MARINA....SEARCHLIGHT...HIGHWAY 164.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3554 11528 3566 11469 3562 11465 3559 11466
      3558 11468 3553 11466 3548 11468 3541 11462
      3538 11462 3531 11497

$$

SC

3 follow-up statements

368 
WGUS75 KVEF 102244
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
344 PM PDT THU JUL 10 2014

NVC003-110100-
/O.CON.KVEF.FF.W.0029.000000T0000Z-140711T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
344 PM PDT THU JUL 10 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM PDT/600 PM
MST/ FOR SOUTH CENTRAL CLARK COUNTY...

AT 330 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE AN AREA OF THUNDERSTORMS ALONG NIPTON ROAD EASTWARD THROUGH 
SEARCHLIGHT AND ALONG COTTONWOOD COVE ROAD. VERY HEAVY RAIN CAN BE 
EXPECTED IN THE VICINITY OF COTTONWOOD COVE MARINA THROUGH 4 PM. THE 
STORMS WERE MOVING NORTH AT 5 MPH. 

LOCATIONS IMPACTED INCLUDE...
SEARCHLIGHT...COTTONWOOD COVE AND COTTONWOOD COVE CAMPGROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3554 11528 3566 11469 3562 11465 3559 11466
      3558 11468 3553 11466 3548 11468 3541 11462
      3538 11462 3531 11497

$$

SC

383 
WGUS75 KVEF 102333
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
433 PM PDT THU JUL 10 2014

NVC003-110100-
/O.CON.KVEF.FF.W.0029.000000T0000Z-140711T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
433 PM PDT THU JUL 10 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM PDT/600 PM
MST/ FOR SOUTH CENTRAL CLARK COUNTY...

AT 424 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING. THIS STORM WAS 
LOCATED 6 MILES WEST OF COTTONWOOD COVE CAMPGROUND...OR 6 MILES EAST 
OF SEARCHLIGHT...MOVING NORTHEAST AT 10 MPH. RAIN GAGES IN THE AREA 
HAVE RECEIVED IN EXCESS OF ONE HALF INCH OF RAIN WITH RADAR 
ESTIMATES EXCEEDING ONE INCH. ADDITIONAL RAINFALL IN EXCESS OF ONE 
HALF IN IS POSSIBLE THROUGH 600 PM.

LOCATIONS IMPACTED INCLUDE...
COTTONWOOD COVE CAMPGROUND AND COTTONWOOD COVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!

REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3554 11528 3566 11469 3562 11465 3559 11466
      3558 11468 3553 11466 3548 11468 3541 11462
      3538 11462 3531 11497

$$

SC

795 
WGUS75 KVEF 110057
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
557 PM PDT THU JUL 10 2014

NVC003-110107-
/O.EXP.KVEF.FF.W.0029.000000T0000Z-140711T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
557 PM PDT THU JUL 10 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 600 PM PDT/600 PM MST/ FOR
SOUTH CENTRAL CLARK COUNTY...

THUNDERSTORMS OVER SOUTH CENTRAL CLARK COUNTY HAVE WEAKENED. THE 
THREAT FOR ANY ADDITIONAL HEAVY RAINFALL HAS ENDED. THEREFORE THE 
FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE FOR THIS AREA.

LAT...LON 3554 11528 3566 11469 3562 11465 3559 11466
      3558 11468 3553 11466 3548 11468 3541 11462
      3538 11462 3531 11497

$$

STACHELSKI

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 9:42 AM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Jul 10, 10:03 AM PDT	Areal Flood Advisory	VEF	Clark	3 hr
Jul 10, 10:14 AM PDT	Flash Flood Watch	VEF	Clark, Lincoln, Nye	8 hr
Jul 10, 10:34 AM PDT	Severe Thunderstorm Warning	VEF	Clark	26 min
Jul 10, 10:55 AM PDT	Severe Thunderstorm Warning	VEF	Clark	50 min
Jul 10, 2:08 PM PDT	Areal Flood Advisory	VEF	Lincoln	3 hr

Nearby

Flash Flood Warnings in Nevada, 2014 Every flash flood warning in 2014

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.