Alert archive / Nevada / Flash Flood Warnings in 2012
Flash Flood Warning 191, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 10, 2012, 1:03 PM PDT for Clark County, Nevada. It was in force for 117 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
- Sep 10, 2012, 1:03 PM PDT (20:03 UTC)
- Expired
- Sep 10, 2012, 3:00 PM PDT
- In force
- 117 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), 97 km from the middle of the area, began a volume at 20:04 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, 8.1 hours before the alert went out and 11 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.
350 WGUS55 KVEF 102003 FFWVEF NVC003-102200- /O.NEW.KVEF.FF.W.0191.120910T2003Z-120910T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 103 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 300 PM PDT. * AT 1256 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM NEAR MAHOGANY GROVE CAMPGROUND AND THE INTERSECTION OF DEER CREEK ROAD AND LEE CANYON ROAD IN THE SPRING MOUNTAINS. THE THUNDERSTORM PRODUCING HEAVY RAIN IS NEAR STATIONARY. * LOCATIONS IMPACTED INCLUDE... COMMUNITIES IN LEE CANYON...LEE CANYON ROAD AND NEARBY SECTIONS OF DEER CREEK ROAD. 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 3632 11571 3640 11561 3632 11557 3629 11562 $$ JA
2 follow-up statements
589 WGUS75 KVEF 102018 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 118 PM PDT MON SEP 10 2012 NVC003-102200- /O.CON.KVEF.FF.W.0191.000000T0000Z-120910T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 118 PM PDT MON SEP 10 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM PDT FOR WEST CENTRAL CLARK COUNTY... THE NEVADA DIVISION OF FORESTRY REPORTED FLASH FLOODING WAS OCCURRING IN LEE CANYON. SOME ROADS WERE BECOMING IMPASSABLE AND WASHES IN THE AREA WILL BE RUNNING HIGH. THE THUNDERSTORM PRODUCING HEAVY RAINFALL WAS STILL IN THE VICINITY OF THE INTERSECTION OF LEE CANYON AND DEER CREEK ROADS. THE STORM WAS NEARLY STATIONARY BUT DOPPLER RADAR INDICATED NEW STORM DEVELOPMENT WAS OCCURRING TOWARD KYLE CANYON ROAD AT 115 PM PDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3632 11571 3640 11561 3632 11557 3629 11562 $$ JA
943 WGUS75 KVEF 102156 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 256 PM PDT MON SEP 10 2012 NVC003-102201- /O.EXP.KVEF.FF.W.0191.000000T0000Z-120910T2200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 256 PM PDT MON SEP 10 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 300 PM PDT FOR WEST CENTRAL CLARK COUNTY... THE CLARK COUNTY DEPARTMENT OF PARKS AND RECREATION REPORTED THAT FLOODING HAD RECEDED IN LEE CANYON BUT SOME DEBRIS MAY STILL BE OBSERVED ON DEER CREEK ROAD BEFORE ROAD CREWS CAN CLEAR IT. HEAVY RAIN ENDED BEFORE 2 PM AND NO ADDTIONAL HEAVY RAIN IS EXPECTED IN THE IMMEDIATE FUTURE. THE FLASH FLOOD WARNING FOR LEE CANYON AND NEARBY SECTIONS OF DEER CREEK ROAD HAS BEEN ALLOWED TO EXPIRE. LAT...LON 3632 11571 3640 11561 3632 11557 3629 11562 $$ JA
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 2:20 PM PDT | Flash Flood Warning | VEF | Clark | 115 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.