Alert archive / Nevada / Flash Flood Warnings in 2011
Flash Flood Warning 16, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 5, 2011, 2:21 PM PDT for Clark County, Nevada. It was in force for 114 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
- Jul 5, 2011, 2:21 PM PDT (21:21 UTC)
- Expired
- Jul 5, 2011, 4:15 PM PDT
- In force
- 114 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), 70 km from the middle of the area, began a volume at 21:20 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, 9.4 hours before the alert went out and 28 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
- 2419 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
412 WGUS55 KVEF 052121 FFWVEF NVC003-052315- /O.NEW.KVEF.FF.W.0016.110705T2121Z-110705T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 221 PM PDT TUE JUL 5 2011 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 415 PM PDT. * AT 211 PM PDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING FROM A THUNDERSTORM NEAR RED ROCK CANYON. OVER AN INCH OF RAIN HAS FALLEN AROUND RED ROCK CANYON AND SPOTTERS HAVE REPORTED THAT WASHES ARE RISING RAPIDLY IN THE AREA AND ARE EXPECTED TO BEGIN TO IMPACT LOW WATER CROSSINGS IN RED ROCK CANYON IN ADDITION TO PORTIONS OF STATE ROUTE 159. ADDITIONAL STORMS WILL MOVE OVER THIS AREA THROUGH 300 PM PDT WHICH WILL CAUSE MORE RUNOFF IN THIS AREA. * LOCATIONS IMPACTED INCLUDE...RED ROCK CANYON AND STATE ROUTE 159 AROUND THE RED ROCK CANYON AREA. 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 TWITTER #NWSVEGAS. && LAT...LON 3613 11550 3619 11547 3613 11541 3608 11544 $$ STAUDENMAIER
2 follow-up statements
204 WGUS75 KVEF 052230 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 330 PM PDT TUE JUL 5 2011 NVC003-052315- /O.CON.KVEF.FF.W.0016.000000T0000Z-110705T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 330 PM PDT TUE JUL 5 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM PDT FOR WEST CENTRAL CLARK COUNTY... AT 322 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING. THIS STORM WAS LOCATED NEAR RED ROCK CANYON. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY. AS OF 322 PM PDT...THERE HAVE NOT BEEN ANY ADDITIONAL REPORTS OF FLOODING WITHIN THE RED ROCK CANYON AREA. HOWEVER ADDITIONAL RAINFALL FROM THUNDERSTORMS MOVING ACROSS THE AREA WILL CONTINUE TO ADD TO THE WATER PROBLEMS WHICH HAVE ALREADY BEEN EXPERIENCED. LOCATIONS IMPACTED INCLUDE...RED ROCK CANYON AND STATE ROUTE 159 AROUND THE RED ROCK CANYON AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS. CAMPERS AND HIKERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF FLASH FLOODING IS OBSERVED. && LAT...LON 3613 11550 3619 11547 3613 11541 3608 11544 $$ JENSEN
004 WGUS75 KVEF 052311 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 411 PM PDT TUE JUL 5 2011 NVC003-052321- /O.EXP.KVEF.FF.W.0016.000000T0000Z-110705T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 411 PM PDT TUE JUL 5 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 415 PM PDT FOR WEST CENTRAL CLARK COUNTY... ALTHOUGH THIS WARNING WILL EXPIRE...AN ADDITIONAL WARNING HAS BEEN ISSUED FOR THIS AREA DUE TO ON GOING FLASH FLOODING. LAT...LON 3613 11550 3619 11547 3613 11541 3608 11544 $$ JENSEN
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 12:14 PM PDT | Flash Flood Warning | VEF | Clark | 76 min |
| Jul 5, 12:54 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 36 min |
| Jul 5, 1:12 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Jul 5, 2:01 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 33 min |
| Jul 5, 3:01 PM PDT | Flash Flood Warning | VEF | Clark | 89 min |
| Jul 5, 3:09 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Jul 5, 3:46 PM PDT | Areal Flood Advisory | VEF | Clark, Esmeralda, Lincoln, Nye | 119 min |
| Jul 5, 4:10 PM PDT | Flash Flood Warning | VEF | Clark | 110 min |
Nearby
Flash Flood Warnings in Nevada, 2011Every flash flood warning in 2011
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.