Alert archive / Nevada / Flash Flood Warnings in 2011
Flash Flood Warning 19, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 5, 2011, 4:10 PM PDT for Clark County, Nevada. It was in force for 110 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 5, 2011, 4:10 PM PDT (23:10 UTC)
- Expired
- Jul 5, 2011, 6:00 PM PDT
- In force
- 110 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), 71 km from the middle of the area, began a volume at 23:09 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 5, 5:03 PM PDT | FLASH FLOOD | 3 S Red Rock Canyon, NV | BROADCAST MEDIA REPORTS SEVERAL AREAS OF FLASH FLOODING NEAR HIGHWAY 160 AT BONNIE SPRINGS. VIDEOS SHOW SEVERAL FEET OF WATER RUSHING IN PLACES. ARROYO ROAD AT BLUE DIAMOND WAS WASHED OUT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 11.2 hours before the alert went out and 27 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.
780 WGUS55 KVEF 052310 FFWVEF NVC003-060100- /O.NEW.KVEF.FF.W.0019.110705T2310Z-110706T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 410 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 600 PM PDT. * AT 400 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THUNDERSTORMS CONTINUE TO SLOWLY MOVE NORTH ACROSS THE RED ROCK CANYON AREA. ALTHOUGH RAINFALL HAS DECREASED...FLASH FLOODING IS CONTINUING. * 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 REMAIN ALERT TO THE POSSIBILITY OF RAPIDLY RISING WATER AND AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF FLASH FLOODING IS OBSERVED. && LAT...LON 3619 11547 3613 11541 3608 11544 3613 11550 $$ JENSEN
2 follow-up statements
472 WGUS75 KVEF 060021 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 521 PM PDT TUE JUL 5 2011 NVC003-060100- /O.CON.KVEF.FF.W.0019.000000T0000Z-110706T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 521 PM PDT TUE JUL 5 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM PDT FOR WEST CENTRAL CLARK COUNTY... AT 511 PM PDT...RAINFALL EARLIER THUNDERSTORMS CONTINUES TO FLOW ACROSS PORTIONS OF THE RED ROCK CANYON AREA. LOCATIONS IMPACTED INCLUDE...RED ROCK CANYON AND STATE ROUTE 159 AROUND THE RED ROCK CANYON AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TRAVELERS...HIKERS AND BIKERS SHOULD NOT ATTEMPT TO CROSS FLOWING WATER. CAMPERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF FLASH FLOODING IS OBSERVED. && LAT...LON 3619 11547 3613 11541 3608 11544 3613 11550 $$ JENSEN
281 WGUS75 KVEF 060053 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 553 PM PDT TUE JUL 5 2011 NVC003-060100- /O.EXP.KVEF.FF.W.0019.000000T0000Z-110706T0100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 553 PM PDT TUE JUL 5 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 600 PM PDT FOR WEST CENTRAL CLARK COUNTY... THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 600 PM PDT THIS EVENING. HOWEVER...HIKERS...CAMPERS...AND TRAVELERS THROUGHOUT RED ROCK CANYON THIS EVENING SHOULD BE AWARE THAT WATER MAY STILL BE ENCOUNTERED IN LOW LYING AREAS. USE EXTRA CAUTION AT NIGHT AS WATER IS ESPECIALLY DIFFICULT TO SEE. LAT...LON 3619 11547 3613 11541 3608 11544 3613 11550 $$ 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, 2:21 PM PDT | Flash Flood Warning | VEF | Clark | 114 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 |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.