Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 40, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 8, 2011, 11:27 AM MST for Mohave County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 8, 2011, 11:27 AM MST (18:27 UTC)
- Expired
- Jul 8, 2011, 1:30 PM MST
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Cedar City radar (KICX), 81 km from the middle of the area, began a volume at 18:29 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 12:00Z, 6.5 hours before the alert went out and 203 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
- 423 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1308 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
527 WGUS55 KVEF 081827 FFWVEF AZC015-082030- /O.NEW.KVEF.FF.W.0040.110708T1827Z-110708T2030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1127 AM MST FRI JUL 8 2011 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 130 PM MST. * AT 1118 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM THUNDERSTORMS ABOUT 6 MILES SOUTHWEST OF PIPE SPRING NATIONAL MONUMENT...OR 15 MILES SOUTHEAST OF COLORADO CITY. THESE STORMS ARE PRODUCING RAINFALL RATES OF UP TO 3 INCHES AN HOUR. THEY ARE MOVING NORTH NORTHEAST AT ABOUT 20 TO 25 MILES PER HOUR. * LOCATIONS IMPACTED INCLUDE...PIPE SPRING...PIPE SPRING NATIONAL MONUMENT AND KAIBAB. 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 3698 11287 3699 11256 3665 11268 3671 11305 $$ JJ
1 follow-up statement
726 WGUS75 KVEF 081942 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1242 PM MST FRI JUL 8 2011 AZC015-082030- /O.CON.KVEF.FF.W.0040.000000T0000Z-110708T2030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 1242 PM MST FRI JUL 8 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM MST FOR NORTHEASTERN MOHAVE COUNTY... AT 1236 PM MST...THE THUNDERSTORMS THAT WERE PRODUCING VERY HEAVY RAIN HAVE MOVED NORTH OUT OF THE AREA. RUNOFF FROM THE THUNDERSTORMS IS EXPECTED TO CONTINUE TO KEEP WASHES AND OTHER LOW LYING AREAS FULL OF DEEP RUNNING WATER THROUGH 130 PM. LOCATIONS IMPACTED INCLUDE...PIPE SPRING...PIPE SPRING NATIONAL MONUMENT AND KAIBAB. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS. && LAT...LON 3698 11287 3699 11256 3665 11268 3671 11305 $$ JJ
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 10:55 AM MST | Areal Flood Advisory | VEF | Mohave | 78 min |
| Jul 8, 11:34 AM MST | Severe Thunderstorm Warning | VEF | Mohave | 41 min |
| Jul 8, 12:52 PM MST | Flash Flood Warning | VEF | Mohave | 113 min |
| Jul 8, 2:25 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 50 min |
| Jul 8, 3:35 PM MST | Flash Flood Warning | VEF | Mohave | 66 min |
| Jul 8, 3:36 PM MST | Areal Flood Advisory | VEF | Mohave | 3 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.