Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 63, NWS Las Vegas, NV

August 3, 2016Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Aug 3, 2016, 2:47 PM MST for Mohave County, Arizona. 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
Aug 3, 2016, 2:47 PM MST (21:47 UTC)
Expired
Aug 3, 2016, 5:45 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 Cedar City radar (KICX), 85 km from the middle of the area, began a volume at 21:51 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

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 9.8 hours before the alert went out and 195 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°0°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.

888 
WGUS55 KVEF 032147
FFWVEF
AZC015-040045-
/O.NEW.KVEF.FF.W.0063.160803T2147Z-160804T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

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

* UNTIL 545 PM MST

* AT 246 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA IN FAR NORTHEASTERN MOHAVE
  COUNTY. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  KAIBAB AND PIPE SPRING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3694 11255 3691 11255 3690 11257 3682 11260
      3681 11260 3678 11262 3674 11261 3674 11262
      3669 11263 3674 11286 3700 11282 3700 11255
      3695 11253

$$

JH
2 follow-up statements
417 
WGUS75 KVEF 032329
FFSVEF

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

AZC015-040045-
/O.CON.KVEF.FF.W.0063.000000T0000Z-160804T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
429 PM MST WED AUG 3 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR
NORTHEASTERN MOHAVE COUNTY...

AT 428 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA.  FLASH FLOODING REMAINS A THREAT.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
KAIBAB AND PIPE SPRING INCLUDING ROUTE 389 BETWEEN PIPE SPRING
NATIONAL MONUMENT AND FREDONIA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3694 11255 3691 11255 3690 11257 3682 11260
      3681 11260 3678 11262 3674 11261 3674 11262
      3669 11263 3674 11286 3700 11282 3700 11255
      3695 11253

$$

JH
356 
WGUS75 KVEF 040037
FFSVEF

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

AZC015-040046-
/O.EXP.KVEF.FF.W.0063.000000T0000Z-160804T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
537 PM MST WED AUG 3 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN MOHAVE COUNTY WILL EXPIRE
AT 545 PM MST...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. BE
AWARE THAT THUNDERSTORM DEVELOPMENT REMAINS A POSSIBILITY THROUGHOUT
THE NIGHT. 

LAT...LON 3694 11255 3691 11255 3690 11257 3682 11260
      3681 11260 3678 11262 3674 11261 3674 11262
      3669 11263 3674 11286 3700 11282 3700 11255
      3695 11253

$$

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, 2:37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.