Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 77, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 27, 2011, 6:18 PM MST for Mohave County, Arizona. It was in force for 96 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 27, 2011, 6:18 PM MST (01:18 UTC)
- Expired
- Aug 27, 2011, 7:54 PM MST
- In force
- 96 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 150 km from the middle of the area, began a volume at 01:21 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
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 1.3 hours before the alert went out and 170 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
- 3394 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
699 WGUS55 KVEF 280118 FFWVEF AZC015-280315- /O.NEW.KVEF.FF.W.0077.110828T0118Z-110828T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 618 PM MST SAT AUG 27 2011 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 815 PM MST. * AT 608 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER SOUTH CENTRAL MOHAVE COUNTY...OR 12 MILES NORTH OF WIKIEUP. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. THE HEAVIEST RAIN WILL FALL OVER HIGHWAY 93 BETWEEN MILE MARKERS 108 AND 120. * LOCATIONS IMPACTED INCLUDE...HIGHWAY 93...BIG SANDY RIVER 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 3492 11372 3491 11344 3474 11343 3475 11372 $$ PIERCE
2 follow-up statements
721 WGUS75 KVEF 280215 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 715 PM MST SAT AUG 27 2011 AZC015-280315- /O.CON.KVEF.FF.W.0077.000000T0000Z-110828T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 715 PM MST SAT AUG 27 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM MST FOR SOUTH CENTRAL MOHAVE COUNTY... AT 706 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS OVER THE WARNED AREA HAVE WEAKENED. HOWEVER...RADAR ESTIMATED UP TO 2 INCHES OF RAIN FELL IN THE DELUGE WASH BASIN WHICH LIES WEST OF HIGHWAY 93. THE HEAVIEST RAINS FELL BETWEEN MILE MARKERS 108 AND 120. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF SOUTHERN MOHAVE COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS. && LAT...LON 3492 11372 3491 11344 3474 11343 3475 11372 $$ PIERCE
678 WGUS75 KVEF 280254 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 754 PM MST SAT AUG 27 2011 AZC015-280303- /O.CAN.KVEF.FF.W.0077.000000T0000Z-110828T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 754 PM MST SAT AUG 27 2011 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL MOHAVE COUNTY... THUNDERSTORMS OVER THE WARNED AREA BETWEEN MILE MARKERS 108 AND 120 ON HIGHWAY 93 WEAKENED. THE FLASH FLOOD WARNING IS CANCELLED. LAT...LON 3492 11372 3491 11344 3474 11343 3475 11372 $$ PIERCE
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 5:23 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 52 min |
| Aug 27, 5:49 PM MST | Flash Flood Warning | VEF | Mohave | 116 min |
| Aug 27, 7:43 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 47 min |
| Aug 27, 8:25 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 28, 3:39 AM MST | Excessive Heat Warning | VEF | Mohave | 40 hr |
Nearby
Flash Flood Warnings in Arizona, 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.