Alert archive / Arizona / Flash Flood Warnings in 2012

Flash Flood Warning 28, NWS Las Vegas, NV

July 14, 2012Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 14, 2012, 4:42 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, 4:42 PM MST (23:42 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), 89 km from the middle of the area, began a volume at 23:44 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

Las Vegas, NV (KVEF), launched 12:00Z, 11.7 hours before the alert went out and 183 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: 372 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 1206 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 20 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.

699 
WGUS55 KVEF 142342
FFWVEF
AZC015-150145-
/O.NEW.KVEF.FF.W.0028.120714T2342Z-120715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A

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

* UNTIL 645 PM MST.

* AT 435 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM NEAR KINGMAN. THE STORM
  PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  KINGMAN AND GOLDEN VALLEY.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 38 AND 59.

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 3521 11410 3529 11394 3536 11383 3521 11389
      3515 11399 3492 11429 3512 11453 3523 11439
      3532 11418

$$

JENSEN

4 follow-up statements

547 
WGUS75 KVEF 150053
FFSVEF

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

AZC015-150145-
/O.CON.KVEF.FF.W.0028.000000T0000Z-120715T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
553 PM MST SAT JUL 14 2012

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

AT 544 PM MST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED A 
THUNDERSTORM PRODUCING FLASH FLOODING. THIS STORM WAS LOCATED 
NEAR KINGMAN. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY 
STATIONARY.

ROAD CLOSURES HAVE TAKEN PLACE IN THE KINGMAN AREA WITH VERY HEAVY 
RAIN BEING REPORTED THROUGH THE AREA.

LOCATIONS IMPACTED INCLUDE...
GOLDEN VALLEY AND KINGMAN.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 38 AND 59.

LAT...LON 3521 11410 3529 11394 3536 11383 3521 11389
      3515 11399 3492 11429 3512 11453 3523 11439
      3532 11418

$$

JENSEN

224 
WGUS55 KVEF 150142 RRA
FFWVEF
AZC015-150245-
/O.EXT.KVEF.FF.W.0028.000000T0000Z-120715T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS EXTENDED THE

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

* UNTIL 745 PM MST.

* AT 632 PM MST...NATIONAL WEATHER DOPPLER RADAR CONTINUED TO        
  INDICATE VERY HEAVY RAIN FROM A THUNDERSTORM NEAR KINGMAN. THE     
  STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...
  KINGMAN AND GOLDEN VALLEY....

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 38 AND 59.

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 3521 11410 3529 11394 3536 11383 3521 11389
      3515 11399 3492 11429 3512 11453 3523 11439
      3532 11418

$$

JS

605 
WGUS75 KVEF 150222
FFSVEF

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

AZC015-150245-
/O.CON.KVEF.FF.W.0028.000000T0000Z-120715T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
722 PM MST SAT JUL 14 2012

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

AT 715 PM MST...A THUNDERSTORM PRODUCING VERY HEAVY RAIN WAS
REPORTED.  THIS STORM WAS LOCATED 6 MILES SOUTHEAST OF OATMAN...OR 12
MILES NORTHWEST OF YUCCA. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS
NEARLY STATIONARY.

LOCATIONS IMPACTED INCLUDE...
KINGMAN...OATMAN AND GOLDEN VALLEY.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 38 AND 59.

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 3521 11410 3529 11394 3536 11383 3521 11389
      3515 11399 3492 11429 3512 11453 3523 11439
      3532 11418

$$

JENSEN

088 
WGUS75 KVEF 150244 RRB
FFSVEF

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

AZC015-150253-
/O.EXP.KVEF.FF.W.0028.000000T0000Z-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 WEST CENTRAL
MOHAVE COUNTY...

WATERS WERE RECEDING BUT WASHES WILL CONTINUE TO RUN THROUGH 9 PM. 
FLASH FLOODING IS NO LONGER EXPECTED.

LAT...LON 3521 11410 3529 11394 3536 11383 3521 11389
      3515 11399 3492 11429 3512 11453 3523 11439
      3532 11418

$$

JS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 5:35 PM MST	Flash Flood Warning	VEF	Mohave	115 min
Jul 14, 1:28 PM MST	Flash Flood Warning	VEF	Mohave	4 hr
Jul 14, 2:00 PM MST	Areal Flood Advisory	VEF	Mohave	2 hr
Jul 14, 3:17 PM MST	Flash Flood Warning	VEF	Mohave	118 min
Jul 14, 3:27 PM MST	Flash Flood Warning	VEF	Mohave	5 hr
Jul 14, 4:03 PM MST	Areal Flood Advisory	VEF	Mohave	57 min
Jul 14, 4:38 PM MST	Flash Flood Warning	VEF	Mohave	3 hr

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.