Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 60, NWS Las Vegas, NV

August 3, 2016Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Aug 3, 2016, 12:29 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, 12:29 PM MST (19:29 UTC)
Expired
Aug 3, 2016, 3:30 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 Cedar City radar (KICX), 141 km from the middle of the area, began a volume at 19:32 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, 7.5 hours before the alert went out and 189 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.

786 
WGUS55 KVEF 031929
FFWVEF
AZC015-032230-
/O.NEW.KVEF.FF.W.0060.160803T1929Z-160803T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1229 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 330 PM MST

* AT 1226 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BAR TEN RANCH...MT. TRUMBULL AND TUWEEP. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

&&

LAT...LON 3620 11345 3644 11363 3677 11327 3629 11292

$$

SC
2 follow-up statements
399 
WGUS75 KVEF 032053
FFSVEF

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

AZC015-032230-
/O.CON.KVEF.FF.W.0060.000000T0000Z-160803T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
153 PM MST WED AUG 3 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR
NORTHEASTERN MOHAVE COUNTY...

AT 146 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS CONTINUING TO
PRODUCE HEAVY RAIN ACROSS THE WARNED AREA. RADAR RAINFALL ESTIMATES
HAVE BEEN 1 TO 3 INCHES ACROSS MUCH OF THE AREA INCLUDING THE
MOUNT TRUMBULL LOOP. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MT. TRUMBULL LOOP...BAR TEN RANCH...MT. TRUMBULL AND TUWEEP. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3620 11345 3644 11363 3677 11327 3629 11292

$$

SC
221 
WGUS75 KVEF 032221
FFSVEF

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

AZC015-032230-
/O.EXP.KVEF.FF.W.0060.000000T0000Z-160803T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
321 PM MST WED AUG 3 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN MOHAVE COUNTY WILL EXPIRE
AT 330 PM MST...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE AN
IMMEDIATE THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES. BE AWARE THAT MORE THUNDERSTORMS COULD DEVELOP THROUGHOUT
THIS AFTERNOON AND TONIGHT.

LAT...LON 3620 11345 3644 11363 3677 11327 3629 11292

$$

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, 1:07 PM MSTFlash Flood WarningVEFMohave3 hr
Aug 3, 2:37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.