Alert archive / Nevada / Flash Flood Warnings in 2012
Flash Flood Warning 196, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 11, 2012, 3:24 AM PDT for Clark County, Nevada; Mohave County, Arizona. It was in force for 111 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
- Sep 11, 2012, 3:24 AM PDT (10:24 UTC)
- Expired
- Sep 11, 2012, 5:15 AM PDT
- In force
- 111 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
Counties Mohave County, AZ, Clark County, NV
The radar
The Las Vegas radar (KESX), 77 km from the middle of the area, began a volume at 10:24 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 00:00Z, 10.4 hours before the alert went out and 138 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3264 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
087 WGUS55 KVEF 111024 FFWVEF AZC015-NVC003-111215- /O.NEW.KVEF.FF.W.0196.120911T1024Z-120911T1215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 324 AM MST TUE SEP 11 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... EXTREME EAST CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 515 AM MST/515 AM PDT/. * AT 315 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM SOUTH OF MEADVIEW TO THE PIERCE FERRY AND ANTARES ROAD JUNCTION...JUST WEST OF GRAND CANYON RANCH. THE STORM PRODUCING VERY HEAVY RAIN...WITH ONE LOCAL OBSERVATION SITE INDICATING 1.06 INCHES OF RAIN HAD FALLEN IN 30 MINUTES. * LOCATIONS IMPACTED INCLUDE... GRAND CANYON RANCH...PIERCE FERRY ROAD...AND MEADVIEW. 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 3607 11416 3607 11399 3577 11398 3577 11416 $$ KENNEDY
2 follow-up statements
513 WGUS75 KVEF 111059 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 359 AM MST TUE SEP 11 2012 AZC015-NVC003-111215- /O.CON.KVEF.FF.W.0196.000000T0000Z-120911T1215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ-CLARK NV- 359 AM MST TUE SEP 11 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM MST/515 AM PDT/ FOR EXTREME EAST CENTRAL CLARK AND CENTRAL MOHAVE COUNTIES... AT 343 AM MST....NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A CLUSTER OF THUNDERSTORMS FROM MEADVIEW...ALONG PIERCE FERRY ROAD TO THE PIERCE FERRY AND ANTARES ROAD JUNCTION...AND EAST TO GRAND CANYON RANCH. THESE STORMS ARE PRODUCING VERY HEAVY RAIN...WITH ONE LOCAL OBSERVATION SITE NEAR DIAMOND BAR ROAD AND PIERCE FERRY ROAD INDICATING NEARLY TWO INCHES OF RAIN HAD FALLEN IN THE PAST HOUR. * LOCATIONS IMPACTED INCLUDE...PIERCE FERRY ROAD...DIAMOND BAR ROAD...MEADVIEW...AND GRAND CANYON RANCH. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3607 11416 3607 11399 3577 11398 3577 11416 $$ KENNEDY
737 WGUS75 KVEF 111207 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 507 AM MST TUE SEP 11 2012 AZC015-NVC003-111216- /O.EXP.KVEF.FF.W.0196.000000T0000Z-120911T1215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ-CLARK NV- 507 AM MST TUE SEP 11 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 515 AM MST/515 AM PDT/ FOR EXTREME EAST CENTRAL CLARK AND CENTRAL MOHAVE COUNTIES... THIS WARNING HAS BEEN REPLACED BY A NEW FLASH FLOOD WARNING FOR THE SAME LOCATIONS IN MOHAVE COUNTY...WHICH IS VALID UNTIL 700 AM MST THIS MORNING. LAT...LON 3607 11416 3607 11399 3577 11398 3577 11416 $$ KENNEDY
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 4:52 AM PDT | Flash Flood Warning | VEF | Nye | 113 min |
| Sep 11, 8:28 AM PDT | Areal Flood Advisory | VEF | Lincoln | 3 hr |
| Sep 11, 11:33 AM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
| Sep 11, 12:32 PM PDT | Flash Flood Warning | VEF | Clark | 88 min |
| Sep 11, 1:44 PM PDT | Areal Flood Advisory | VEF | Clark | 27 min |
| Sep 11, 1:51 PM PDT | Flash Flood Warning | VEF | Clark | 114 min |
| Sep 11, 2:08 PM PDT | Flash Flood Warning | VEF | Clark | 93 min |
| Sep 11, 2:16 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 44 min |
| Sep 11, 2:18 PM PDT | Flash Flood Warning | VEF | Clark | 4 hr |
| Sep 11, 3:39 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Sep 11, 4:02 PM PDT | Flash Flood Warning | VEF | Clark | 118 min |
| Sep 10, 5:35 PM PDT | Flash Flood Warning | VEF | Mohave | 115 min |
| Sep 11, 5:05 AM PDT | Flash Flood Warning | VEF | Mohave | 65 min |
Nearby
Flash Flood Warnings in Nevada, 2012Flash 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.