Alert archive / Nevada / Flash Flood Warnings in 2013
Flash Flood Warning 3, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 7, 2013, 12:28 PM PDT for Clark County, Nevada. It was in force for 2 hr. 3 reports 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
- Jul 7, 2013, 12:28 PM PDT (19:28 UTC)
- Expired
- Jul 7, 2013, 2:30 PM PDT
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Clark County, NV
The radar
The Las Vegas radar (KESX), 49 km from the middle of the area, began a volume at 19:28 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 |
|---|---|---|---|
| Jul 7, 1:03 PM PDT | FLASH FLOOD | 5 Sw Green Valley, NV | 6 INCHES OF WATER FLOWING DOWN MARYLAND PARKWAY BETWEEN CACTUS AND SILVERADO RANCH. |
| Jul 7, 1:30 PM PDT | FLASH FLOOD | 4 Sw Green Valley, NV | 6 INCHES OF FLOWING WATER AT THE INTERSECTION OF EASTERN AND SILVERADO RANCH. |
| Jul 7, 1:45 PM PDT | HEAVY RAIN 0.71 | Ssw Green Valley, NV | CLARK COUNTY FLOOD CONTROL DISTRICT SENSOR LOCATED JUST SOUTH OF THE INTERSECTION OF WARM SPRINGS RD AND GREEN VALLEY PARKWAY REPORTED 0.71 INCHES OF RAIN IN AN HOUR. |
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, 7.5 hours before the alert went out and 51 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
- 4057 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 38 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.
349
WGUS55 KVEF 071928
FFWVEF
NVC003-072130-
/O.NEW.KVEF.FF.W.0003.130707T1928Z-130707T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1228 PM PDT SUN JUL 7 2013
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL CLARK COUNTY IN SOUTHERN NEVADA...
* UNTIL 230 PM PDT.
* AT 1224 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM NEAR SILVERADO RANCH...OR
NEAR HENDERSON EXECUTIVE. THE STORM PRODUCING VERY HEAVY RAIN WAS
MOVING NORTH AT 25 MPH BUT MORE STORMS WERE FORMING TO THE SOUTH.
* LOCATIONS IMPACTED INCLUDE...
HENDERSON...SAM BOYD STADIUM...NELLIS AFB...SILVERADO RANCH...GREEN
VALLEY...EAST LAS VEGAS...THE SILVER BOWL AND NELLIS AIR FORCE
BASE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. 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 ON TWITTER USING...AT NWSVEGAS.
&&
LAT...LON 3627 11511 3624 11500 3609 11497 3597 11503
3588 11519
$$
WOLCOTT3 follow-up statements
914
WGUS75 KVEF 071954
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1254 PM PDT SUN JUL 7 2013
NVC003-072130-
/O.CON.KVEF.FF.W.0003.000000T0000Z-130707T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
1254 PM PDT SUN JUL 7 2013
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM PDT FOR
CENTRAL CLARK COUNTY...
AT 1245 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THESE STORMS
WERE LOCATED ON THE EAST SIDE OF LAS VEGAS...EAST OF INTERSTATE
15...MOVING NORTH AT 25 MPH. STORMS CONTINUE TO DEVELOP TO THE SOUTH
OF THE VALLEY MOVING NORTH.
AT 1250 PM PDT...CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT GAUGES
INDICATED THAT UP TO ONE HALF INCH HAD FALLEN IN THE LAST HOUR
BETWEEN SEVEN HILLS AND INTERSTATE 15...WITH RAIN CONTINUING TO FALL.
LOCATIONS IMPACTED INCLUDE...
NELLIS AFB AND NELLIS AIR FORCE BASE...HENDERSON...SAMS TOWN...GREEN
VALLEY...AND SILVERADO RANCH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR
WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE...OR ON TWITTER USING...AT NWSVEGAS.
&&
LAT...LON 3627 11511 3624 11500 3609 11497 3597 11503
3588 11519
$$
WOLCOTT786
WGUS75 KVEF 072053
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
153 PM PDT SUN JUL 7 2013
NVC003-072130-
/O.CON.KVEF.FF.W.0003.000000T0000Z-130707T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
153 PM PDT SUN JUL 7 2013
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM PDT FOR
CENTRAL CLARK COUNTY...
AT 146 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THESE STORMS WERE
LOCATED ACROSS THE EAST HALF OF LAS VEGAS...EAST OF INTERSTATE 15.
THE STORMS WERE MOVING NORTH AT 25 MPH...BUT CONTINUE TO DEVELOP TO
THE SOUTH.
AT 150 PM PDT...CLARK COUNTY REGIONAL FLOOD CONTROL DISTRICT GAUGES
INDICATED THAT UP TO SEVEN-TENTHS OF AN INCH HAD FALLEN IN THE LAST
HOUR NEAR WARM SPRINGS ROAD AND GREEN VALLEY PARKWAY...WITH RAIN
CONTINUING TO FALL. SEVERAL REPORTS OF RUNNING WATER OVER ROADS ON
THE EAST SIDE OF LAS VEGAS HAVE BEEN RECEIVED.
LOCATIONS IMPACTED INCLUDE...
NELLIS AFB AND NELLIS AIR FORCE BASE...HENDERSON...SAMS TOWN...GREEN
VALLEY...AND SILVERADO RANCH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. 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 ON TWITTER USING...AT NWSVEGAS.
&&
LAT...LON 3627 11511 3624 11500 3609 11497 3597 11503
3588 11519
$$
WOLCOTT563
WGUS75 KVEF 072132
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
232 PM PDT SUN JUL 7 2013
NVC003-072136-
/O.EXP.KVEF.FF.W.0003.000000T0000Z-130707T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLARK NV-
232 PM PDT SUN JUL 7 2013
...THE FLASH FLOOD WARNING WILL EXPIRE AT 230 PM PDT FOR CENTRAL
CLARK COUNTY...
THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE BEGUN TO DISSIPATE.
A FEW OCCASIONAL CELLS MAY STILL MOVE ACROSS THE LAS VEGAS VALLEY.
THIS WARNING WILL BE REPLACED BY A FLOOD ADVISORY FOR THE SAME
GENERAL AREA.
LAT...LON 3627 11511 3624 11500 3609 11497 3597 11503
3588 11519
$$
WOLCOTTThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 2:32 PM PDT | Areal Flood Advisory | VEF | Clark | 88 min |
Nearby
Flash Flood Warnings in Nevada, 2013Every flash flood warning in 2013
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.