Alert archive / Nevada / Flash Flood Warnings in 2011
Flash Flood Warning 96, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 14, 2011, 5:31 PM PDT for Clark County, Nevada. It was in force for 59 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 14, 2011, 5:31 PM PDT (00:31 UTC)
- Expired
- Sep 14, 2011, 6:30 PM PDT
- In force
- 59 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), 106 km from the middle of the area, began a volume at 00:32 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 00:00Z, 0.5 hours before the alert went out and 87 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
- 1494 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
639 WGUS55 KVEF 150031 FFWVEF NVC003-150130- /O.NEW.KVEF.FF.W.0096.110915T0031Z-110915T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 531 PM PDT WED SEP 14 2011 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL CLARK COUNTY IN SOUTHERN NEVADA... * UNTIL 630 PM PDT. * AT 523 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM 6 MILES SOUTH OF MOAPA. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE...MOAPA...PORTIONS OF INTERSTATE 15 BETWEEN MILE MARKERS 80 AND 94 AND ALSO HIGHWAY 168 NORTHWEST OF MOAPA AND THE CALIFORNIA WASH AREA. 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 TWITTER #NWSVEGAS. && LAT...LON 3672 11463 3670 11451 3648 11456 3653 11474 $$ JENSEN
2 follow-up statements
216 WGUS75 KVEF 150103 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 603 PM PDT WED SEP 14 2011 NVC003-150130- /O.CON.KVEF.FF.W.0096.000000T0000Z-110915T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 603 PM PDT WED SEP 14 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM PDT FOR NORTH CENTRAL CLARK COUNTY... AT 554 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN. THIS STORM WAS LOCATED NEAR MOAPA. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY. A REMOTE RAIN GAGE IN THE CALIFORNIA WASH REPORTED THAT 0.63 INCHES OF RAIN HAS FALLEN IN THE AREA SINCE 5 PM PDT. MEANWHILE RADAR ESTIMATES THAT UPWARDS OF 2 INCHES OF RAIN MAY HAVE FALLEN WITHIN THE WARNED AREA SINCE 5 PM. IN ADDITION TO THE RAIN...SMALL HAIL MAY ALSO BE SEEN. LOCATIONS IMPACTED INCLUDE...MOAPA...PORTIONS OF INTERSTATE 15 BETWEEN MILE MARKERS 80 AND 94 AND ALSO HIGHWAY 168 NORTHWEST OF MOAPA AND THE CALIFORNIA WASH AREA. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS. && LAT...LON 3672 11463 3670 11451 3648 11456 3653 11474 $$ JENSEN
431 WGUS75 KVEF 150126 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 626 PM PDT WED SEP 14 2011 NVC003-150134- /O.EXP.KVEF.FF.W.0096.000000T0000Z-110915T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CLARK NV- 626 PM PDT WED SEP 14 2011 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM PDT FOR NORTH CENTRAL CLARK COUNTY... THUNDERSTORMS HAVE MOVED OUT OF THE WARNED AREA AND ALTHOUGH LIGHT RAIN IS EXPECTED TO CONTINUE INTO THE EVENING...HEAVY RAINFALL PRODUCING FLASH FLOODING IS NO LONGER EXPECTED. HOWEVER PEOPLE TRAVELING ALONG INTERSTATE 15 WEST OF MOAPA AND OUTDOOR ENTHUSIASTS IN THE CALIFORNIA WASH AREA SHOULD BE AWARE THAT NORMALLY DRY WASHES MAY CONTAIN FLOWING WATER...WHILE PONDING OF WATER MAY BE ENCOUNTERED ALONG THE ROADWAYS WELL INTO THE EVENING HOURS. LAT...LON 3672 11463 3670 11451 3648 11456 3653 11474 $$ JENSEN
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 3:36 PM PDT | Severe Thunderstorm Warning | VEF | Lincoln, Nye | 28 min |
Nearby
Flash Flood Warnings in Nevada, 2011Every flash flood warning in 2011
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.