Alert archive / Arizona / Flash Flood Warnings in 2016

Flash Flood Warning 121, NWS Las Vegas, NV

September 2, 2016Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Sep 2, 2016, 5:12 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
Sep 2, 2016, 5:12 PM MST (00:12 UTC)
Expired
Sep 2, 2016, 8:15 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), 128 km from the middle of the area, began a volume at 00:14 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 00:00Z, 0.2 hours before the alert went out and 186 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 00:00Z on 2016-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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 00:00Z on 2016-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.19395878Sfc1 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
29 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1632 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

500 
WGUS55 KVEF 030012
FFWVEF
AZC015-030315-
/O.NEW.KVEF.FF.W.0121.160903T0012Z-160903T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
512 PM MST FRI SEP 2 2016

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

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

* UNTIL 815 PM MST

* AT 508 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ALONG MOUNT TRUMBULL LOOP WEST OF MOUNT TRUMBULL. RADAR
  APPROXIMATES ONE TO THREE INCHES OF RAIN HAVE FALLEN IN THIS AREA
  THIS AFTERNOON. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  MT. TRUMBULL...MOUNT TRUMBULL LOOP...CRAIGS RANCH ROAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3658 11303 3633 11302 3628 11341 3658 11347

$$

CMS
2 follow-up statements
822 
WGUS75 KVEF 030147
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
647 PM MST FRI SEP 2 2016

AZC015-030315-
/O.CON.KVEF.FF.W.0121.000000T0000Z-160903T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
647 PM MST FRI SEP 2 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MST FOR
NORTHEASTERN MOHAVE COUNTY...

AT 645 PM MST...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
MODERATE TO HEAVY RAIN NEAR MOUNT TRUMBULL LOOP TO THE NORTH AND
WEST OF MT. TRUMBULL. ONE TO THREE INCHES OF RAIN HAVE FALLEN IN
MUCH OF THIS AREA THIS AFTERNOON. FLASH FLOODING IS LIKELY OCCURRING
ON MOUNT TRUMBULL LOOP. TRAVEL IS NOT RECOMMENDED IN THIS AREA THIS
EVENING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
MT. TRUMBULL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3658 11303 3633 11302 3628 11341 3658 11347

$$

CMS
184 
WGUS75 KVEF 030307
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
807 PM MST FRI SEP 2 2016

AZC015-030315-
/O.EXP.KVEF.FF.W.0121.000000T0000Z-160903T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
807 PM MST FRI SEP 2 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN MOHAVE COUNTY WILL EXPIRE
AT 815 PM MST...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. HOWEVER...LEFTOVER DEBRIS FROM EARLIER FLOODING LIKELY
REMAINS ON MOUNT TRUMBULL LOOP. USE EXTREME CAUTION TRAVELING IN
THIS AREA OVERNIGHT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD
CLOSURES.

LAT...LON 3658 11303 3633 11302 3628 11341 3658 11347

$$

CMS

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.