Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 62, NWS Las Vegas, NV

August 3, 2016Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Aug 3, 2016, 2:37 PM MST for Mohave County, Arizona. 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 3, 2016, 2:37 PM MST (21:37 UTC)
Expired
Aug 3, 2016, 5:30 PM MST
In force
3 hr
Issued by
NWS Las Vegas, NV
Area
Storm-based polygon
Flood severity
None

County Mohave County, AZ

The radar

The Las Vegas radar (KESX), 136 km from the middle of the area, began a volume at 21:37 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

TimeReportWhereRemark
Aug 3, 3:11 PM MSTFLASH FLOOD9 S Valentine, AZHACKBERRY ROAD FROM HWY 93 TO ROUTE 66 CLOSED DUE TO FLOODING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.6 hours before the alert went out and 160 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-pSkew-T log-p diagram, Flgstf/Belemont, AZ at 12:00Z on 2016-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 258 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2016-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
258 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

723 
WGUS55 KVEF 032137
FFWVEF
AZC015-040030-
/O.NEW.KVEF.FF.W.0062.160803T2137Z-160804T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
237 PM MST WED AUG 3 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL MOHAVE COUNTY IN NORTHWESTERN ARIZONA...

* UNTIL 530 PM MST

* AT 235 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA ALONG THE EASTERN BORDER OF
  MOHAVE COUNTY. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DIAMOND M RANCH...VALENTINE...FORT ROCK AND PEACH SPRINGS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3483 11369 3564 11373 3563 11333 3484 11333

$$

JH
2 follow-up statements
569 
WGUS75 KVEF 032259
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
359 PM MST WED AUG 3 2016

AZC015-040030-
/O.CON.KVEF.FF.W.0062.000000T0000Z-160804T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
359 PM MST WED AUG 3 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM MST FOR
SOUTH CENTRAL MOHAVE COUNTY...

AT 357 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. PUBLIC WORKS REPORTED HACKBERRY
ROAD WAS CLOSED FROM HIGHWAY 93 NORTH TO ROUTE 66. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DIAMOND M RANCH...VALENTINE AND PEACH SPRINGS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3483 11369 3564 11373 3563 11333 3484 11333

$$

JH
237 
WGUS75 KVEF 040023
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
523 PM MST WED AUG 3 2016

AZC015-040030-
/O.EXP.KVEF.FF.W.0062.000000T0000Z-160804T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
523 PM MST WED AUG 3 2016

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL MOHAVE COUNTY WILL
EXPIRE AT 530 PM MST...

THE HEAVY RAIN HAS ENDED IN THE NORTHERN PORTION OF THIS WARNING
NEAR PEACH SPRINGS. RAIN AND THE THREAT OF FLOODING CONTINUES FROM
VALENTINE SOUTHWARD AND ANOTHER FLASH FLOOD WARNING WAS ISSUED
EARLIER WHICH INCLUDES THAT AREA. PLEASE CONTINUE TO HEED ANY
REMAINING ROAD CLOSURES.

LAT...LON 3483 11369 3564 11373 3563 11333 3484 11333

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 5:40 PM MSTAreal Flood AdvisoryVEFMohave110 min
Aug 3, 2:54 AM MSTFlash Flood WatchVEFMohave50 hr
Aug 3, 11:44 AM MSTFlash Flood WarningVEFMohave3 hr
Aug 3, 12:29 PM MSTFlash Flood WarningVEFMohave3 hr
Aug 3, 1:07 PM MSTFlash Flood WarningVEFMohave3 hr
Aug 3, 2:47 PM MSTFlash Flood WarningVEFMohave3 hr
Aug 3, 3:12 PM MSTFlash Flood WarningVEFMohave3 hr
Aug 3, 3:56 PM MSTFlash Flood WarningVEFMohave4 hr
Aug 3, 4:34 PM MSTSevere Thunderstorm WarningVEFMohave26 min

Nearby

Flash Flood Warnings in Arizona, 2016Every 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.