Alert archive / Nevada / Flash Flood Warnings in 2012
Flash Flood Warning 197, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 11, 2012, 4:52 AM PDT for Nye County, Nevada. It was in force for 113 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 11, 2012, 4:52 AM PDT (11:52 UTC)
- Expired
- Sep 11, 2012, 6:45 AM PDT
- In force
- 113 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Nye County, NV
The nearest sounding before it
Las Vegas, NV (KVEF), launched 00:00Z, 11.9 hours before the alert went out and 172 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
- 3264 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
861
WGUS55 KVEF 111152
FFWVEF
NVC023-111345-
/O.NEW.KVEF.FF.W.0197.120911T1152Z-120911T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
452 AM PDT TUE SEP 11 2012
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL NYE COUNTY IN SOUTH CENTRAL NEVADA...
* UNTIL 645 AM PDT.
* AT 446 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER CENTRAL NYE COUNTY...OR 42
MILES EAST OF GOLDFIELD. THE STORM PRODUCING VERY HEAVY RAIN WAS
NEARLY STATIONARY.
* LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF CENTRAL NYE COUNTY.
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 3774 11603 3752 11632 3766 11677 3804 11674
3804 11610
$$
JENSEN2 follow-up statements
400
WGUS75 KVEF 111247
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
547 AM PDT TUE SEP 11 2012
NVC023-111345-
/O.CON.KVEF.FF.W.0197.000000T0000Z-120911T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NYE NV-
547 AM PDT TUE SEP 11 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM PDT FOR
CENTRAL NYE COUNTY...
AT 534 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES
THAT THUNDERSTORMS ARE DECREASING OVER THE WARNED AREA...OVER
CENTRAL NYE COUNTY...OR 39 MILES WEST OF RACHEL. HOWEVER THE
THUNDERSTORMS THAT STILL REMAIN OVER THE AREA ARE NEARLY STATIONARY.
ANY ADDITIONAL RAINFALL WILL ADD TO THE RAIN WHICH HAS PREVIOUSLY
FALLEN AND ENHANCE FLOODING WHICH IS LIKELY TAKING PLACE.
LOCATIONS IMPACTED INCLUDE...
MAINLY RURAL AREAS OF CENTRAL NYE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3774 11603 3752 11632 3766 11677 3804 11674
3804 11610
$$
JENSEN437
WGUS75 KVEF 111340
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
640 AM PDT TUE SEP 11 2012
NVC023-111348-
/O.EXP.KVEF.FF.W.0197.000000T0000Z-120911T1345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NYE NV-
640 AM PDT TUE SEP 11 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 AM PDT FOR CENTRAL NYE
COUNTY...
THUNDERSTORMS HAVE GENERALLY DECREASED ACROSS CENTRAL NYE COUNTY
WITH HEAVY RAINFALL NO LONGER BEING INDICATED BY THE NATIONAL
WEATHER SERVICE DOPPLER RADAR. THUS THE FLASH FLOOD WARNING WILL BE
ALLOWED TO EXPIRE AS OF 645 AM PDT.
HOWEVER THOSE TRAVELING ACROSS CENTRAL NYE COUNTY SHOULD BE AWARE
THAT WATER WILL LIKELY BE FLOWING THROUGH NORMALLY DRY WASHES FOR
THE NEXT SEVERAL HOURS WHILE PONDING OF WATER IN LOW LYING AREAS MAY
BE ENCOUNTERED THROUGH THE DAY.
LAT...LON 3774 11603 3752 11632 3766 11677 3804 11674
3804 11610
$$
JENSENThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 3:24 AM PDT | Flash Flood Warning | VEF | Clark | 111 min |
| Sep 11, 8:28 AM PDT | Areal Flood Advisory | VEF | Lincoln | 3 hr |
| Sep 11, 11:33 AM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
| Sep 11, 12:32 PM PDT | Flash Flood Warning | VEF | Clark | 88 min |
| Sep 11, 1:44 PM PDT | Areal Flood Advisory | VEF | Clark | 27 min |
| Sep 11, 1:51 PM PDT | Flash Flood Warning | VEF | Clark | 114 min |
| Sep 11, 2:08 PM PDT | Flash Flood Warning | VEF | Clark | 93 min |
| Sep 11, 2:16 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 44 min |
| Sep 11, 2:18 PM PDT | Flash Flood Warning | VEF | Clark | 4 hr |
| Sep 11, 3:39 PM PDT | Flash Flood Warning | VEF | Clark | 2 hr |
| Sep 11, 4:02 PM PDT | Flash Flood Warning | VEF | Clark | 118 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.