Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 123, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 18, 2012, 3:45 PM MST for Mohave County, Arizona. It was in force for 94 min. 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 18, 2012, 3:45 PM MST (22:45 UTC)
- Expired
- Aug 18, 2012, 5:19 PM MST
- In force
- 94 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 81 km from the middle of the area, began a volume at 22:47 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, 10.8 hours before the alert went out and 169 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.
- Mixed-layer CAPE
- 33 J/kg
- Mixed-layer CIN
- -303 J/kg
- Mixed-layer LCL
- 2227 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
726 WGUS55 KVEF 182245 FFWVEF AZC015-190045- /O.NEW.KVEF.FF.W.0123.120818T2245Z-120819T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 345 PM MST SAT AUG 18 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 545 PM MST. * AT 338 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER CENTRAL MOHAVE COUNTY...OR 17 MILES NORTH OF KINGMAN. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE...STOCKTON HILL ROAD 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 3555 11412 3555 11391 3535 11391 3534 11413 $$ ASG
2 follow-up statements
580 WGUS75 KVEF 182346 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 446 PM MST SAT AUG 18 2012 AZC015-190045- /O.CON.KVEF.FF.W.0123.000000T0000Z-120819T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 446 PM MST SAT AUG 18 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR CENTRAL MOHAVE COUNTY... AT 435 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE THUNDERSTORM THAT PRODUCED VERY HEAVY RAIN OVER STOCKTON HILL ROAD ABOUT 15 MILES NORTH OF KINGMAN AS DISSIPATED AND MOVED EAST. HOWEVER...A SECOND THUNDERSTORM WAS DEVELOPING OVER THE CERBAT MOUNTAINS WHICH MAY ADD TO THE FLOODING POTENTIAL. RUNOFF FROM THE FIRST STORM AND POTENTIALLY THE SECOND STORM WILL LIKELY CAUSE ADDITIONAL FLASH FLOODING. LOCATIONS IMPACTED INCLUDE...STOCKTON HILL ROAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3555 11412 3555 11391 3535 11391 3534 11413 $$ ASG
193 WGUS75 KVEF 190019 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 519 PM MST SAT AUG 18 2012 AZC015-190027- /O.CAN.KVEF.FF.W.0123.000000T0000Z-120819T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 519 PM MST SAT AUG 18 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL MOHAVE COUNTY... THE HEAVY RAIN THAT PROMPTED THE FLASH FLOOD WARNING HAS DISSIPATED AND THERE HAVE BEEN NO REPORTS OF FLOODING ON STOCKTON HILL ROAD. NO ADDITIONAL FLOODING IS EXPECTED...THEREFORE THE FLASH FLOOD WARNING HAS BEEN CANCELLED. LAT...LON 3555 11412 3555 11391 3535 11391 3534 11413 $$ ASG
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 6:21 PM MST | Areal Flood Advisory | VEF | Mohave | 106 min |
| Aug 18, 12:25 PM MST | Flash Flood Warning | VEF | Mohave | 78 min |
| Aug 18, 2:43 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 47 min |
| Aug 18, 4:56 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
Nearby
Flash Flood Warnings in Arizona, 2012Every 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.