Alert archive / Arizona / Flash Flood Warnings in 2012

Flash Flood Warning 29, NWS Las Vegas, NV

July 14, 2012Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 14, 2012, 5:10 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: Jul 14, 2012, 5:10 PM MST (00:10 UTC)
Expired: Jul 14, 2012, 7:45 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 Las Vegas radar (KESX), 120 km from the middle of the area, began a volume at 00:10 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1574 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

709 
WGUS55 KVEF 150010
FFWVEF
AZC015-150145-
/O.NEW.KVEF.FF.W.0029.120715T0010Z-120715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
510 PM MST SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...

* UNTIL 645 PM MST.

* AT 501 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A THUNDERSTORM NEAR WILD COW CAMPGROUND...OR 13 MILES SOUTHEAST OF
  KINGMAN. THE STORM WAS LIKELY PRODUCING HEAVY RAIN WAS NEARLY
  STATIONARY.

  IN ADDITION RUNOFF FROM PREVIOUS THUNDERSTORMS AND HEAVY RAINFALL
  IS CURRENTLY MOVING THROUGH THE AREA WITH WATER LIKELY RUNNING 
  ACROSS ROADWAYS AND PONDING IN LOW LYING AREAS.

* LOCATIONS IMPACTED INCLUDE...
  HUALAPAI MOUNTAIN PARK...BLAKE RANCH RV PARK AND VALENTINE.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 61 AND 78.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.

&&

LAT...LON 3496 11406 3519 11390 3536 11383 3547 11360
      3500 11356 3494 11361 3483 11379 3478 11406

$$

JENSEN

4 follow-up statements

606 
WGUS75 KVEF 150108
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
608 PM MST SAT JUL 14 2012

AZC015-150145-
/O.CON.KVEF.FF.W.0029.000000T0000Z-120715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
608 PM MST SAT JUL 14 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MST FOR
CENTRAL MOHAVE COUNTY...

AT 602 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING.  THIS STORM WAS
LOCATED NEAR BLAKE RANCH RV PARK...OR 15 MILES SOUTHEAST OF KINGMAN.
THE THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY.

LOCATIONS IMPACTED INCLUDE...
BLAKE RANCH RV PARK...VALENTINE...AND HUALAPAI MOUNTAIN PARK.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 61 AND 78.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.

&&

LAT...LON 3496 11406 3519 11390 3536 11383 3547 11360
      3500 11356 3494 11361 3483 11379 3478 11406

$$

JENSEN

684 
WGUS55 KVEF 150143
FFWVEF
AZC015-150245-
/O.EXT.KVEF.FF.W.0029.000000T0000Z-120715T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
643 PM MST SAT JUL 14 2012

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...

* UNTIL 745 PM MST.

* AT 636 PM MST...THUNDERSTORMS PRODUCING HEAVY RAIN CONTINUE TO
  MOVE ACROSS THE AREA WITH THE STRONGEST STORM BEING 17 MILES
  SOUTHWEST OF WILD COW CAMPGROUND...OR 9 MILES EAST OF YUCCA.
  THE STORM PRODUCING FLASH FLOODING WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  WILD COW CAMPGROUND...HUALAPAI MOUNTAIN PARK...BLAKE RANCH RV PARK
  AND VALENTINE.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 61 AND 78.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.

&&

LAT...LON 3496 11406 3519 11390 3536 11383 3547 11360
      3500 11356 3494 11361 3483 11379 3478 11406

$$

JENSEN

667 
WGUS75 KVEF 150221
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
721 PM MST SAT JUL 14 2012

AZC015-150245-
/O.CON.KVEF.FF.W.0029.000000T0000Z-120715T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
721 PM MST SAT JUL 14 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 745 PM MST FOR
CENTRAL MOHAVE COUNTY...

AT 711 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
THUNDERSTORM PRODUCING HEAVY RAINFALL...LOCATED 13 MILES SOUTH OF 
WILD COW CAMPGROUND...OR 16 MILES EAST OF YUCCA. THE THUNDERSTORM 
WITH HEAVY RAIN WAS NEARLY STATIONARY.

LOCATIONS IMPACTED INCLUDE...
WILD COW CAMPGROUND...HUALAPAI MOUNTAIN PARK...BLAKE RANCH RV PARK
AND VALENTINE.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 61 AND 78.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR
WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!

REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.

&&

LAT...LON 3496 11406 3519 11390 3536 11383 3547 11360
      3500 11356 3494 11361 3483 11379 3478 11406

$$

JENSEN

524 
WGUS75 KVEF 150244
FFSVEF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
744 PM MST SAT JUL 14 2012

AZC015-150253-
/O.EXP.KVEF.FF.W.0029.000000T0000Z-120715T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
744 PM MST SAT JUL 14 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 745 PM MST FOR CENTRAL
MOHAVE COUNTY...

THE THREAT OF FLOODING HAS ENDED. FLOOD WATERS FROM HEAVY RAIN 
EARLIER WERE RECEDING.

LAT...LON 3496 11406 3519 11390 3536 11383 3547 11360
      3500 11356 3494 11361 3483 11379 3478 11406

$$

JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 5:30 PM MST	Flash Flood Warning	VEF	Mohave	2 hr
Jul 14, 6:36 PM MST	Flash Flood Warning	VEF	Mohave	114 min
Jul 14, 8:20 PM MST	Flash Flood Warning	VEF	Mohave	115 min
Jul 14, 10:01 PM MST	Flash Flood Warning	VEF	Mohave	3 hr
Jul 15, 10:14 AM MST	Flash Flood Watch	VEF	Mohave	11 hr
Jul 15, 12:53 PM MST	Flash Flood Warning	VEF	Mohave	2 hr
Jul 15, 4:40 PM MST	Flash Flood Warning	VEF	Mohave	65 min
Jul 15, 4:58 PM MST	Flash Flood Warning	VEF	Mohave	92 min

Nearby

Flash Flood Warnings in Arizona, 2012 Every flash flood warning in 2012

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.