Alert archive / Nevada / Flash Flood Warnings in 2012
Flash Flood Warning 110, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 9, 2012, 6:14 PM PDT for Clark County, Nevada. It was in force for 37 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 9, 2012, 6:14 PM PDT (01:14 UTC)
- Expired
- Aug 9, 2012, 6:51 PM PDT
- In force
- 37 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Clark County, NV
The radar
The Las Vegas radar (KESX), 36 km from the middle of the area, began a volume at 01:13 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, 1.2 hours before the alert went out and 59 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
- 5451 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
046 WGUS55 KVEF 100114 FFWVEF NVC003-100315- /O.NEW.KVEF.FF.W.0110.120810T0114Z-120810T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 614 PM PDT THU AUG 9 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 815 PM PDT. * AT 607 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM NEAR ANTHEM...OR 8 MILES SOUTHWEST OF HENDERSON...MOVING NORTH AT 5 MPH. THE ANTHEM DETENTION BASIN IS REPORT A HALF OF RAIN IN 15 MINUTES. * LOCATIONS IMPACTED INCLUDE... ANTHEM...SEVEN HILLS...SILVERADO RANCH...GREEN VALLEY AND SAM BOYD STADIUM. 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 3602 11516 3610 11501 3590 11502 3587 11515 $$ BORDEN
1 follow-up statement
749 WGUS75 KVEF 100151 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 651 PM PDT THU AUG 9 2012 NVC003-100156- /O.CAN.KVEF.FF.W.0110.000000T0000Z-120810T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 651 PM PDT THU AUG 9 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL CLARK COUNTY...THE THUNDERSTORM THAT PROMPTED THE WARNING OVER THE ANTHEM AREA HAS DISSIPATED. THE ANTHEM DETENTION BASIN REPORTED SIX TENTHS OF AN INCH OF RAIN IN LESS THAN ONE HOUR. THE RUNOFF FROM THIS STORM SHOULD BE CONTAINED TO THE DETENTION BASIN. MINOR PONDING OF WATER IS STILL POSSIBLE THROUGH 7:30 PM. LAT...LON 3602 11516 3610 11501 3590 11502 3587 11515 $$ BORDEN
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:06 PM PDT | Dust Storm Warning | VEF | Clark | 115 min |
Nearby
Flash Flood Warnings in Nevada, 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.