Alert archive / Nevada / Flash Flood Warnings in 2012
Flash Flood Warning 174, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 31, 2012, 11:56 AM PDT for Esmeralda County, Nevada. It was in force for 109 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
- Aug 31, 2012, 11:56 AM PDT (18:56 UTC)
- Expired
- Aug 31, 2012, 1:45 PM PDT
- In force
- 109 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Esmeralda County, NV
The radar
The San Joaquin Valley radar (KHNX), 208 km from the middle of the area, began a volume at 18:55 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
Reno, NV (KREV), launched 12:00Z, 6.9 hours before the alert went out and 210 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
- 3186 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 154 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
184
WGUS55 KVEF 311856
FFWVEF
NVC009-312045-
/O.NEW.KVEF.FF.W.0174.120831T1856Z-120831T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1156 AM PDT FRI AUG 31 2012
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL ESMERALDA COUNTY IN SOUTH CENTRAL NEVADA...
* UNTIL 145 PM PDT.
* AT 1150 AM PDT...A TRAINED WEATHER SPOTTER REPORTED VERY HEAVY
RAIN FROM A THUNDERSTORM NEAR DYER WITH SHALLOW RUNOFF BEGIN TO
TO FLOW OFF THE EAST SLOPES OF THE WHITE MOUNTAINS. HEAVY RAIN IS
EXPECTED TO CONTINUE THROUGH AT LEAST 1230 PM AS ADDITIONAL
THUNDERSTORMS TO THE SOUTH CONTINUE OVER THE SAME AREA AS THEY
MOVE TO THE NORTH AROUND 10 MPH.
* LOCATIONS IMPACTED INCLUDE...
DYER AND NEARBY SECTIONS OF STATE ROUTE 264.
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 3776 11814 3778 11794 3757 11796 3757 11798
3768 11813
$$
JA2 follow-up statements
435
WGUS75 KVEF 311941
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1241 PM PDT FRI AUG 31 2012
NVC009-312045-
/O.CON.KVEF.FF.W.0174.000000T0000Z-120831T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESMERALDA NV-
1241 PM PDT FRI AUG 31 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM PDT FOR WEST
CENTRAL ESMERALDA COUNTY...
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN ENDED
OVER THE WHITE MOUNTAINS AND AREA AROUND DYER BETWEEN 1215 AND
1230 PM. HOWEVER...RUNOFF FROM HEAVY RAINFALL THAT OCCURRED EARLIER
WILL LIKELY PRODUCE FLASH FLOODING OF CREEKS AND WASHES ON THE EAST
SLOPES OF THE WHITE MOUNTAINS. THESE DRAINAGES FLOW ACROSS STATE
ROUTE 264 IN AND AROUND DYER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG...
NWSVEGAS.
&&
LAT...LON 3776 11814 3778 11794 3757 11796 3757 11798
3768 11813
$$
JA475
WGUS75 KVEF 312039
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
139 PM PDT FRI AUG 31 2012
NVC009-312047-
/O.EXP.KVEF.FF.W.0174.000000T0000Z-120831T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ESMERALDA NV-
139 PM PDT FRI AUG 31 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 145 PM PDT FOR WEST CENTRAL
ESMERALDA COUNTY...
HEAVY RAIN ENDED OVER THE WHITE MOUNTAINS AND AREA AROUND DYER
BETWEEN 1215 AND 1230 PM....AND ANY RUNOFF FROM HEAVY RAINFALL THAT
OCCURRED EARLIER IS LIKELY SUBSIDING ALONG THE CREEKS AND WASHES ON
THE EAST SLOPES OF THE WHITE MOUNTAINS. THEREFORE...THE FLASH FLOOD
WARNING WILL BE ALLOWED TO EXPIRE AT 145 PM PDT.
LAT...LON 3776 11814 3778 11794 3757 11796 3757 11798
3768 11813
$$
KENNEDYThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 11:11 AM PDT | Flash Flood Watch | VEF | Clark, Lincoln, Nye | 23 hr |
| Aug 31, 1:44 PM PDT | Areal Flood Advisory | VEF | Clark | 2 hr |
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.