Alert archive / Arizona / Flash Flood Warnings in 2015

Flash Flood Warning 64, NWS Las Vegas, NV

July 18, 2015Mohave County, Arizona; San Bernardino County, California

NWS Las Vegas, NV issued this flash flood warning at Jul 18, 2015, 2:20 PM MST for Mohave County, Arizona; San Bernardino County, California. It was in force for 6 hr. 3 reports 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: Jul 18, 2015, 2:20 PM MST (21:20 UTC)
Expired: Jul 18, 2015, 8:15 PM MST
In force: 6 hr
Issued by: NWS Las Vegas, NV
Area: Storm-based polygon
Flood severity: None

Counties Mohave County, AZ, San Bernardino County, CA

The radar

The Las Vegas radar (KESX), 156 km from the middle of the area, began a volume at 21:23 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
Jul 18, 3:17 PM MST	FLASH FLOOD	2 Ssw New Kingman-Butler, AZ	DEBRIS AND ROCKS IN THE ROAD AT KINO AVE AND WALLECK RANCH DR IN KINGMAN.
Jul 18, 4:02 PM MST	FLASH FLOOD	4 E Kingman, AZ	DEBRIS ACROSS ROADWAY WITH LIMBS AND SMALL SHRUBBERY AT THE INTERSECTION OF SOUTHERN AND IROQUOIS.
Jul 18, 5:20 PM MST	FLASH FLOOD	6 Se Yucca, AZ	MOHAVE COUNTY PUBLIC WORKS REPORTS THAT ALAMO ROAD IS 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, 9.3 hours before the alert went out and 208 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: 36 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1276 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

893 
WGUS55 KVEF 182120
FFWVEF
AZC015-CAC071-190315-
/O.NEW.KVEF.FF.W.0064.150718T2120Z-150719T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
220 PM PDT SAT JUL 18 2015

THE NATIONAL WEATHER SERVICE IN LAS VEGAS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL MOHAVE COUNTY IN NORTHWESTERN ARIZONA...
  SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...

* UNTIL 815 PM PDT/815 PM MST/
    
* AT 218 PM PDT /218 PM MST/...DOPPLER RADAR INDICATED NUMEROUS 
  THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH 
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  LAKE HAVASU CITY...KINGMAN...WIKIEUP...ALAMO LAKE...PARKER DAM... 
  HUALAPAI MOUNTAIN PARK...DW RANCH ROAD...NEW KINGMAN-
  BUTLER...CATTAIL COVE STATE PARK...DESERT HILLS...BURRO CREEK 
  CAMPGROUND...BLAKE RANCH ROAD...BIG RIVER AND HUALAPAI PEAK.

THIS INCLUDES INTERSTATE 40 IN ARIZONA BETWEEN MILE MARKERS 45 AND
93.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3463 11445 3471 11408 3535 11411 3541 11385
      3523 11385 3519 11365 3523 11333 3432 11333
      3429 11336 3431 11354 3423 11360 3421 11367
      3424 11373 3422 11384 3425 11401 3430 11414
      3426 11413 3419 11423 3408 11444 3408 11450

$$

WOLCOTT

2 follow-up statements

784 
WGUS75 KVEF 182301
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
401 PM PDT SAT JUL 18 2015

AZC015-CAC071-190315-
/O.CON.KVEF.FF.W.0064.000000T0000Z-150719T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-
401 PM PDT SAT JUL 18 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM PDT/815 PM
MST/ FOR SOUTH CENTRAL MOHAVE AND SOUTHEASTERN SAN BERNARDINO
COUNTIES...

AT 358 PM PDT /358 PM MST/...TRAINED WEATHER SPOTTERS REPORTED 
THUNDERSTORMS PRODUCING HEAVY RAIN HAD CAUSED FLOODING IN THE 
KINGMAN AREA. OTHER RURAL AREAS OF SOUTHERN MOHAVE COUNTY ARE LIKELY 
EXPERIENCING FLOODING AT THIS TIME. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LAKE HAVASU CITY...KINGMAN...WIKIEUP...ALAMO LAKE...PARKER DAM... 
THREE DUNES CAMPGROUND...EARP...HUALAPAI MOUNTAIN PARK...NEW KINGMAN-
BUTLER...CATTAIL COVE STATE PARK...DESERT HILLS...BURRO CREEK 
CAMPGROUND...BIG RIVER AND HUALAPAI PEAK.

THIS INCLUDES INTERSTATE 40 IN ARIZONA BETWEEN MILE MARKERS 45 AND
93.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.

&&

LAT...LON 3463 11445 3471 11408 3535 11411 3541 11385
      3523 11385 3519 11365 3523 11333 3432 11333
      3429 11336 3431 11354 3423 11360 3421 11367
      3424 11373 3422 11384 3425 11401 3430 11414
      3426 11413 3419 11423 3408 11444 3408 11450

$$

WOLCOTT

461 
WGUS75 KVEF 190201
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
701 PM PDT SAT JUL 18 2015

AZC015-CAC071-190209-
/O.CAN.KVEF.FF.W.0064.000000T0000Z-150719T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-
701 PM PDT SAT JUL 18 2015

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL MOHAVE AND SOUTHEASTERN
SAN BERNARDINO COUNTIES IS CANCELLED...

THE HEAVY RAIN HAS ENDED OVER SOUTHERN MOHAVE COUNTY...AND FLOODING 
IS NO LONGER EXPECTED TO POSE A THREAT. USE CAUTION IF TRAVELING IN 
THE AREA AS DEBRIS AND STANDING WATER MAY CAUSE DIFFICULT TRAVEL 
CONDITIONS. PLEASE HEED ALL ROAD CLOSURES.

LAT...LON 3463 11445 3471 11408 3535 11411 3541 11385
      3523 11385 3519 11365 3523 11333 3432 11333
      3429 11336 3431 11354 3423 11360 3421 11367
      3424 11373 3422 11384 3425 11401 3430 11414
      3426 11413 3419 11423 3408 11444 3408 11450

$$

WOLCOTT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 5:54 PM MST	Severe Thunderstorm Warning	VEF	Mohave	36 min
Jul 17, 7:19 PM MST	Areal Flood Advisory	VEF	Mohave	4 hr
Jul 17, 9:45 PM MST	Areal Flood Warning	VEF	Mohave	12 hr
Jul 17, 10:27 PM MST	Severe Thunderstorm Warning	VEF	Mohave	48 min
Jul 17, 10:35 PM MST	Flash Flood Warning	VEF	Mohave	115 min
Jul 18, 12:27 AM MST	Flash Flood Warning	VEF	Mohave	3 hr
Jul 18, 12:45 PM MST	Severe Thunderstorm Warning	VEF	Mohave	44 min
Jul 18, 12:57 PM MST	Severe Thunderstorm Warning	VEF	Mohave	33 min
Jul 18, 1:07 PM MST	Flash Flood Warning	VEF	Mohave	6 hr
Jul 18, 1:23 PM MST	Flash Flood Warning	VEF	Mohave	6 hr
Jul 18, 1:27 PM MST	Severe Thunderstorm Warning	VEF	Mohave	58 min
Jul 18, 1:36 PM MST	Severe Thunderstorm Warning	VEF	Mohave	39 min
Jul 18, 1:44 PM MST	Severe Thunderstorm Warning	VEF	Mohave	61 min
Jul 18, 1:50 PM MST	Flash Flood Warning	VEF	Mohave	5 hr
Jul 18, 2:11 PM MST	Severe Thunderstorm Warning	VEF	Mohave	49 min
Jul 18, 3:19 PM MST	Severe Thunderstorm Warning	VEF	Mohave	26 min
Jul 17, 5:21 PM MST	Flash Flood Warning	VEF	San Bernardino	3 hr
Jul 17, 6:17 PM MST	Flash Flood Warning	VEF	San Bernardino	6 hr
Jul 17, 7:17 PM MST	Dust Storm Warning	VEF	San Bernardino	3 hr
Jul 17, 7:23 PM MST	Areal Flood Advisory	VEF	San Bernardino	3 hr
Jul 18, 12:17 AM MST	Flash Flood Warning	VEF	San Bernardino	3 hr
Jul 18, 10:49 AM MST	Flash Flood Warning	VEF	San Bernardino	3 hr
Jul 18, 11:00 AM MST	Flash Flood Warning	VEF	San Bernardino	3 hr
Jul 18, 1:46 PM MST	Dust Storm Warning	VEF	Inyo	109 min

Nearby

Flash Flood Warnings in Arizona, 2015 Flash Flood Warnings in California, 2015 Every flash flood warning in 2015

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.