Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 17, NWS Las Vegas, NV

June 30, 2016Mohave County, Arizona; Clark County, Nevada

NWS Las Vegas, NV issued this flash flood warning at Jun 30, 2016, 3:51 PM MST for Mohave County, Arizona; 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: Jun 30, 2016, 3:51 PM MST (22:51 UTC)
Expired: Jun 30, 2016, 6:45 PM MST
In force: 3 hr
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Flood severity: None

Counties Mohave County, AZ, Clark County, NV

The radar

The Las Vegas radar (KESX), 25 km from the middle of the area, began a volume at 22:52 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
Jun 30, 4:30 PM MST	FLASH FLOOD	3 Nw Jean, NV	12 TO 18 INCHES OF WATER FLOWING OVER HWY 161 BETWEEN GOODSPRINGS & JEAN. .

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, 10.9 hours before the alert went out and 75 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: 487 J/kg
Mixed-layer CIN: -306 J/kg
Mixed-layer LCL: 2632 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

100 
WGUS55 KVEF 302251
FFWVEF
AZC015-NVC003-010145-
/O.NEW.KVEF.FF.W.0017.160630T2251Z-160701T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
351 PM PDT THU JUN 30 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN MOHAVE COUNTY IN NORTHWESTERN ARIZONA...
  NORTHEASTERN CLARK COUNTY IN SOUTHERN NEVADA...

* UNTIL 645 PM PDT/645 PM MST/

* AT 349 PM PDT/349 PM MST/...DOPPLER RADAR INDICATED THUNDERSTORMS
  PRODUCING HEAVY RAIN ACROSS WESTTERN LAKE MEAD. FLASH FLOODING IS
  EXPECTED TACROSS LOCAL ROADS IN AND AROUND THE LAKE MEAD
  RECREATIONAL AREA INCLUDING VALLEY OF FIRE AND TEMPLE BAR.
  ADDITIONAL FLASH FLOODING IS POSSIBLE BETWEEN JEAN AND PRIMM AND
  MAY IMPACT AREAS NEAR WILLOW BEACH IN THE NEXT FEW HOURS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  HENDERSON...NORTH LAS VEGAS...BOULDER CITY...PRIMM...
  LAS VEGAS BAY...JEAN...LAKE LAS VEGAS...OVERTON...MOAPA VALLEY...
  MEADVIEW...ECHO BAY...BOULDER BEACH...BOULDER BEACH CAMPGROUND...
  CALLVILLE BAY CAMPGROUND...HOOVER DAM...SOUTH COVE...
  CALLVILLE BAY...TEMPLE BAR CAMPGROUND...
  VALLEY OF FIRE AND LAS VEGAS BAY CAMPGROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3555 11532 3564 11543 3590 11534 3595 11490
      3644 11503 3668 11401 3568 11401

$$

OUTLER

3 follow-up statements

187 
WGUS75 KVEF 010001
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
501 PM PDT THU JUN 30 2016

AZC015-NVC003-010145-
/O.CON.KVEF.FF.W.0017.000000T0000Z-160701T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-
501 PM PDT THU JUN 30 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT/645 PM
MST/ FOR NORTHWESTERN MOHAVE AND NORTHEASTERN CLARK COUNTIES...

AT 459 PM PDT/459 PM MST/...THUNDERSTORMS CONTINUE ALONG A LINE FROM
BOULDER CITY TO PRIMM. POCKETS OF HEAVY RAIN CONTINUE TO POSE A
SIGNIFICANT FLASH FLOOD HAZARD. FLASH FLOODING WILL BE POSSIBLE AS
STORMS DEVELOP EASTWARD BETWEEN COTTONWOOD COVE AND WILLOW BEACH. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
HENDERSON...NORTH LAS VEGAS...BOULDER CITY...PRIMM...LAS VEGAS BAY...
JEAN...LAKE LAS VEGAS...OVERTON...MOAPA VALLEY...MEADVIEW...
ECHO BAY...BOULDER BEACH...BOULDER BEACH CAMPGROUND...
CALLVILLE BAY CAMPGROUND...HOOVER DAM...SOUTH COVE...CALLVILLE BAY...
TEMPLE BAR CAMPGROUND...VALLEY OF FIRE AND LAS VEGAS BAY CAMPGROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3555 11532 3564 11543 3590 11534 3595 11490
      3644 11503 3668 11401 3568 11401

$$

OUTLER

701 
WGUS75 KVEF 010024
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
524 PM PDT THU JUN 30 2016

AZC015-NVC003-010145-
/O.CON.KVEF.FF.W.0017.000000T0000Z-160701T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-
524 PM PDT THU JUN 30 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT/645 PM
MST/ FOR NORTHWESTERN MOHAVE AND NORTHEASTERN CLARK COUNTIES...

AT 523 PM PDT/523 PM MST/...HEAVY RAIN IS BECOMING CONFINED TO
EASTERN LAKE MEAD AND MEADVIEW AREA...AS WELL AS NEAR WILLOW BEACH.
FLASH FLOODING REMAINS POSSIBLE MAINLY IN THESE AREAS THROUGH THE
LATE AFTERNOON. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3555 11532 3564 11543 3590 11534 3595 11490
      3644 11503 3668 11401 3568 11401

$$

OUTLER

627 
WGUS75 KVEF 010135
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
635 PM PDT THU JUN 30 2016

AZC015-NVC003-010145-
/O.EXP.KVEF.FF.W.0017.000000T0000Z-160701T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-CLARK NV-
635 PM PDT THU JUN 30 2016

...THE FLASH FLOOD WARNING FOR NORTHWESTERN MOHAVE AND NORTHEASTERN
CLARK COUNTIES WILL EXPIRE AT 645 PM PDT/645 PM MST/...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 3555 11532 3564 11543 3590 11534 3595 11490
      3644 11503 3668 11401 3568 11401

$$

OUTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 2:47 PM MST	Severe Thunderstorm Warning	VEF	Mohave	88 min
Jun 30, 2:58 PM MST	Severe Thunderstorm Warning	VEF	Mohave	32 min
Jun 30, 3:02 PM MST	Flash Flood Warning	VEF	Mohave	28 min
Jun 30, 4:13 PM MST	Severe Thunderstorm Warning	VEF	Mohave	69 min
Jun 30, 4:29 PM MST	Severe Thunderstorm Warning	VEF	Mohave	61 min
Jun 30, 4:46 PM MST	Flash Flood Warning	VEF	Mohave	4 hr
Jun 30, 4:52 PM MST	Severe Thunderstorm Warning	VEF	Mohave	68 min
Jun 29, 5:04 PM MST	Areal Flood Advisory	VEF	Esmeralda	3 hr
Jun 30, 12:35 PM MST	Flash Flood Warning	VEF	Clark	3 hr
Jun 30, 12:52 PM MST	Severe Thunderstorm Warning	VEF	Clark	38 min
Jun 30, 12:59 PM MST	Flash Flood Warning	VEF	Clark	3 hr
Jun 30, 1:10 PM MST	Flash Flood Warning	VEF	Clark	3 hr
Jun 30, 1:32 PM MST	Severe Thunderstorm Warning	VEF	Clark	43 min
Jun 30, 2:04 PM MST	Flash Flood Warning	VEF	Lincoln, Nye	3 hr
Jun 30, 2:26 PM MST	Flash Flood Warning	VEF	Clark	3 hr
Jun 30, 2:30 PM MST	Severe Thunderstorm Warning	VEF	Clark	60 min
Jun 30, 2:42 PM MST	Severe Thunderstorm Warning	VEF	Clark	63 min
Jun 30, 2:49 PM MST	Areal Flood Advisory	VEF	Lincoln	26 min
Jun 30, 2:55 PM MST	Flash Flood Warning	VEF	Lincoln	3 hr
Jun 30, 3:11 PM MST	Areal Flood Advisory	VEF	Lincoln	3 hr

Nearby

Flash Flood Warnings in Arizona, 2016 Flash Flood Warnings in Nevada, 2016 Every flash flood warning in 2016

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.