Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 126, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 18, 2012, 4:47 PM PDT for Inyo County, California. It was in force for 118 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
- Aug 18, 2012, 4:47 PM PDT (23:47 UTC)
- Expired
- Aug 18, 2012, 6:45 PM PDT
- In force
- 118 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Inyo County, CA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 18, 5:22 PM PDT | FLASH FLOOD | 9 Ssw Stovepipe Wells, CA | CALIFORNIA HIGHWAY PATROL REPORTS THAT HIGHWAY 190 IS WASHED OUT AT MILE MARKER 79 DUE TO FLASH FLOODING. HIGHWAY 190 IS CLOSED DUE TO THE WASHOUT. |
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, 11.8 hours before the alert went out and 153 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
- 33 J/kg
- Mixed-layer CIN
- -303 J/kg
- Mixed-layer LCL
- 2227 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
785 WGUS55 KVEF 182347 FFWVEF CAC027-190145- /O.NEW.KVEF.FF.W.0126.120818T2347Z-120819T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 447 PM PDT SAT AUG 18 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL INYO COUNTY IN EASTERN CALIFORNIA... * UNTIL 645 PM PDT. * AT 443 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER HIGHWAY 190 11 MILES SOUTHWEST OF STOVEPIPE WELLS. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE... HIGHWAY 190 BETWEEN PANAMINT SPRINGS AND STOVEPIPE WELLS. 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 3660 11725 3660 11714 3635 11722 3640 11736 $$ MORGAN
2 follow-up statements
645 WGUS75 KVEF 190040 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 540 PM PDT SAT AUG 18 2012 CAC027-190145- /O.CON.KVEF.FF.W.0126.000000T0000Z-120819T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ INYO CA- 540 PM PDT SAT AUG 18 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR CENTRAL INYO COUNTY... AT 535 PM PDT...RADAR INDICATED A STATIONARY THUNDERSTORM OVER HIGHWAY 190 11 MILES SOUTHWEST OF STOVEPIPE WELLS. AT 522 PM PDT...THE CALIFORNIA HIGHWAY PATROL REPORTED DEBRIS OVER THE HIGHWAY DUE TO FLASH FLOODING. THE THUNDERSTORM IS EXPECTED TO DISSIPATE BY 645 PM PDT...BUT WATER IN THE EMIGRANT WASH MAY CONTINUE FLOWING ACROSS THE HIGHWAY. LOCATIONS IMPACTED INCLUDE... HIGHWAY 190. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3660 11725 3660 11714 3635 11722 3640 11736 $$ MORGAN
078 WGUS75 KVEF 190137 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 637 PM PDT SAT AUG 18 2012 CAC027-190145- /O.EXP.KVEF.FF.W.0126.000000T0000Z-120819T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ INYO CA- 637 PM PDT SAT AUG 18 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 PM PDT FOR CENTRAL INYO COUNTY... AT 635 PM PDT...RADAR INDICATED THAT THUNDERSTORMS HAD MOVED AWAY FROM HIGHWAY 190...SO THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. THE CALIFORNIA HIGHWAY PATROL REPORTED THAT FLOODING HAD CARRIED DEBRIS OVER THE ROAD AT 522 PM PDT...AND AS OF 558 PM PDT THE HIGHWAY WAS CLOSED BETWEEN MILE MARKERS 76 AND 78. LAT...LON 3660 11725 3660 11714 3635 11722 3640 11736 $$ MORGAN
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 3:26 PM PDT | Areal Flood Advisory | VEF | Inyo | 54 min |
| Aug 18, 4:34 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 51 min |
Nearby
Flash Flood Warnings in California, 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.