Alert archive / Nevada / Flash Flood Warnings in 2011
Flash Flood Warning 4, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 3, 2011, 6:53 PM PDT for Clark County, Nevada. It was in force for 64 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 3, 2011, 6:53 PM PDT (01:53 UTC)
- Expired
- Jul 3, 2011, 7:57 PM PDT
- In force
- 64 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), 31 km from the middle of the area, began a volume at 01:54 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 3, 7:00 PM PDT | HEAVY RAIN 0.73 | 4 Ssw Green Valley, NV | A SPOTTER MEASURED 0.73 INCH OF RAIN IN AN HOUR IN HENDERSON. |
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 00:00Z, 1.9 hours before the alert went out and 69 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
- 5387 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
998 WGUS55 KVEF 040153 FFWVEF NVC003-040345- /O.NEW.KVEF.FF.W.0004.110704T0153Z-110704T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 653 PM PDT SUN JUL 3 2011 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 845 PM PDT. * AT 648 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A LINE OF THUNDERSTORM ALONG INTERSTATE 15 FROM LAS VEGAS SOUTH TO THE NEVADA AND CALIFORNIA BORDER. THESE STORMS WILL PRODUCE VERY HEAVY RAINS. * LOCATIONS IMPACTED INCLUDE...JEAN...PRIMM...SLOAN...ANTHEM...BLACK MTN...HENDERSON EXECUTIVE AIRPORT...NIPTON ROAD MILE MARKER 3... SEVEN HILLS AND SOUTHERN HIGHLANDS. 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 3601 11520 3599 11499 3538 11510 3572 11553 $$ JJ
3 follow-up statements
217 WGUS75 KVEF 040247 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 747 PM PDT SUN JUL 3 2011 NVC003-040345- /O.CON.KVEF.FF.W.0004.000000T0000Z-110704T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 747 PM PDT SUN JUL 3 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PDT FOR SOUTH CENTRAL CLARK COUNTY... AT 739 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THESE STORM WERE LOCATED NEAR AND ALONG INTERSTATE 15 SOUTH OF LAS VEGAS TO TO STATE BORDER AND ALONG U.S. HIGHWAY 95 IN THE EL DORADO VALLEY SOUTH OF LAS VEGAS. LOCATIONS IMPACTED INCLUDE...JEAN...PRIMM...SLOAN...ANTHEM...BLACK MTN...HENDERSON EXECUTIVE AIRPORT...NIPTON ROAD MILE MARKER 3...SEVEN HILLS AND SOUTHERN HIGHLANDS. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT PDT MONDAY MORNING FOR SOUTHERN CALIFORNIA. && LAT...LON 3601 11520 3599 11499 3538 11510 3572 11553 $$ JJ
339 WGUS75 KVEF 040247 RRA FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 747 PM PDT SUN JUL 3 2011 NVC003-040345- /O.CON.KVEF.FF.W.0004.000000T0000Z-110704T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 747 PM PDT SUN JUL 3 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PDT FOR SOUTH CENTRAL CLARK COUNTY... AT 745 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THIS STORM WAS LOCATED 7 MILES EAST OF JEAN. THE THUNDERSTORMS WITH EXCESSIVE RAIN WERE NEARLY STATIONARY. LOCATIONS IMPACTED INCLUDE...JEAN...PRIMM...SLOAN...ANTHEM...BLACK MTN...HENDERSON EXECUTIVE AIRPORT...NIPTON ROAD MILE MARKER 3...SEVEN HILLS AND SOUTHERN HIGHLANDS. 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 3601 11520 3599 11499 3538 11510 3572 11553 $$ STACHELSKI
722 WGUS75 KVEF 040257 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 757 PM PDT SUN JUL 3 2011 NVC003-040307- /O.CAN.KVEF.FF.W.0004.000000T0000Z-110704T0345Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 757 PM PDT SUN JUL 3 2011 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL CLARK COUNTY... THUNDERSTORM ACTIVITY HAS GENERALLY WEAKENED OVER THE AREA OF SOUTH CENTRAL CLARK COUNTY FROM SLOAN SOUTHWARD TO PRIMM. RAINFALL AMOUNTS OBSERVED WERE MAINLY UNDER A HALF OF AN INCH. THUS THE THREAT OF FLASH FLOODING IN THIS AREA HAS ENDED. LAT...LON 3601 11520 3599 11499 3538 11510 3572 11553 $$ STACHELSKI
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 6:41 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Jul 3, 7:06 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 54 min |
| Jul 3, 7:40 PM PDT | Flash Flood Warning | VEF | Clark | 95 min |
| Jul 3, 9:46 PM PDT | Areal Flood Advisory | VEF | 119 min | |
| Jul 4, 3:48 PM PDT | Flash Flood Warning | VEF | Esmeralda, Lincoln, Nye | 117 min |
| Jul 4, 4:35 PM PDT | Flash Flood Warning | VEF | Esmeralda, Nye | 115 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.