Alert archive / Nevada / Flash Flood Warnings in 2012
Flash Flood Warning 192, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 10, 2012, 2:20 PM PDT for Clark County, Nevada. It was in force for 115 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
- Sep 10, 2012, 2:20 PM PDT (21:20 UTC)
- Expired
- Sep 10, 2012, 4:15 PM PDT
- In force
- 115 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), 90 km from the middle of the area, began a volume at 21:22 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 |
|---|---|---|---|
| Sep 10, 2:20 PM PDT | HEAVY RAIN 1.92 | 2 Ssw Mt. Charleston, NV | 1.92 INCHES OF RAIN WAS RECORDED IN ONE HOUR BY THE KYLE CANYON RAWS SENSOR NEAR THE INTERSECTION OF KYLE CANYON AND DEER CREEK ROADS. A TOTAL OF 2.22 INCHES FELL IN A 2 HOUR PERIOD. MINOR FLOODING 2 TO 4 INCHES DEEP WAS OBSERVED ON ROADS IN KYLE AND RAINBOW C |
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, 9.3 hours before the alert went out and 14 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
- 438 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 2077 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
360 WGUS55 KVEF 102120 FFWVEF NVC003-102315- /O.NEW.KVEF.FF.W.0192.120910T2120Z-120910T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 220 PM PDT MON SEP 10 2012 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 218 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER KYLE CANYON IN THE SPRING MOUNTAINS. THE THUNDERSTORM PRODUCING HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE... MT. CHARLESTON...KYLE CANYON CAMPGROUND...MARY JANE FALLS CAMPGROUND 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 3628 11568 3630 11554 3626 11552 3621 11565 $$ JA
2 follow-up statements
114 WGUS75 KVEF 102206 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 306 PM PDT MON SEP 10 2012 NVC003-102315- /O.CON.KVEF.FF.W.0192.000000T0000Z-120910T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 306 PM PDT MON SEP 10 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM PDT FOR WEST CENTRAL CLARK COUNTY... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE THUNDERSTORM PRODUCING HEAVY RAIN OVER KYLE CANYON DISSIPATED SHORTLY AFTER 230 PM. RUNOFF FROM THE EARLIER HEAVY RAINFALL WILL LIKELY CONTINUE TO IMPACT SECONDARY ROADS AND LOW LYING AREAS NEAR KYLE CANYON ROAD THROUGH 4 PM PDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3628 11568 3630 11554 3626 11552 3621 11565 $$ JA
771 WGUS75 KVEF 102312 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 412 PM PDT MON SEP 10 2012 NVC003-102316- /O.EXP.KVEF.FF.W.0192.000000T0000Z-120910T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 412 PM PDT MON SEP 10 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 415 PM PDT FOR WEST CENTRAL CLARK COUNTY... RUNOFF FROM THE HEAVY RAINFALL THAT OCCURRED EARLIER THIS AFTERNOON OVER KYLE CANYON HAS HAD TIME TO RECEDE AND THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE ON SCHEDULE. LAT...LON 3628 11568 3630 11554 3626 11552 3621 11565 $$ JA
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 1:03 PM PDT | Flash Flood Warning | VEF | Clark | 117 min |
| Sep 10, 4:52 PM PDT | Areal Flood Advisory | VEF | Lincoln | 38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.