Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 91, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 2, 2012, 2:59 PM MST for Mohave County, Arizona. It was in force for 2 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
- Aug 2, 2012, 2:59 PM MST (21:59 UTC)
- Expired
- Aug 2, 2012, 5:00 PM MST
- In force
- 2 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), 77 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 147 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
- 302 J/kg
- Mixed-layer CIN
- -217 J/kg
- Mixed-layer LCL
- 2034 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
094 WGUS55 KVEF 022159 FFWVEF AZC015-030000- /O.NEW.KVEF.FF.W.0091.120802T2159Z-120803T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 259 PM MST THU AUG 2 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 500 PM MST. * AT 255 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM NEAR GRAND CANYON RANCH...OR 46 MILES NORTH OF KINGMAN. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE... GRAND CANYON RANCH. 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 3585 11417 3596 11387 3573 11388 3574 11418 $$ STACHELSKI
2 follow-up statements
200 WGUS75 KVEF 022305 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 405 PM MST THU AUG 2 2012 AZC015-030000- /O.CON.KVEF.FF.W.0091.000000T0000Z-120803T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 405 PM MST THU AUG 2 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 500 PM MST FOR CENTRAL MOHAVE COUNTY... AT 400 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THUNDERSTORMS NEAR THE GRAND CANYON RANCH HAD WEAKENED. HOWEVER RUNOFF FROM HEAVY RAIN EARLIER TRAVELING DOWN WASHES WILL STILL ALLOW FOR FLASH FLOODING TO OCCUR IN THIS AREA. LOCATIONS IMPACTED INCLUDE... GRAND CANYON RANCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3585 11417 3596 11387 3573 11388 3574 11418 $$ STACHELSKI
261 WGUS75 KVEF 022353 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 453 PM MST THU AUG 2 2012 AZC015-030001- /O.EXP.KVEF.FF.W.0091.000000T0000Z-120803T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 453 PM MST THU AUG 2 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 500 PM MST FOR CENTRAL MOHAVE COUNTY... DOPPLER RADAR HAS INDICATED THAT THE STORM THAT WAS RESPONSIBLE FOR THE FLASH FLOOD WARNING HAS WEAKENED. RUNOFF MAY CONTINUE THROUGH 600 PM...BUT THE IMMEDIATE THREAT HAS ENDED. LAT...LON 3585 11417 3596 11387 3573 11388 3574 11418 $$ ASG
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 2:13 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 2, 3:52 PM MST | Flash Flood Warning | VEF | Mohave | 113 min |
| Aug 2, 4:45 PM MST | Areal Flood Advisory | VEF | Mohave | 46 min |
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.