Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 190, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 9, 2012, 3:47 PM MST for Mohave County, Arizona. It was in force for 118 min. 1 report 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
- Sep 9, 2012, 3:47 PM MST (22:47 UTC)
- Expired
- Sep 9, 2012, 5:45 PM MST
- In force
- 118 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), 76 km from the middle of the area, began a volume at 22:49 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 |
|---|---|---|---|
| Sep 9, 5:13 PM MST | FLASH FLOOD | 4 Ene Golden Valley, AZ | TRAINED SPOTTER IN GOLDEN VALLEY REPORTED SEVERAL ROADS COMPLETELY FLOODED AND IMPASSABLE WITH AT LEAST TWO FEET OF WATER COVERING THE ROADS. SPOTTER ALSO STATED IT WAS THE WORST HE HAS EVER SEEN. |
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, 10.8 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
- 3433 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
858 WGUS55 KVEF 092247 FFWVEF AZC015-100045- /O.NEW.KVEF.FF.W.0190.120909T2247Z-120910T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 347 PM MST SUN SEP 9 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 545 PM MST. * AT 340 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM 6 MILES NORTHEAST OF GOLDEN VALLEY...OR 8 MILES NORTHWEST OF KINGMAN. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE...STOCKTON HILL ROAD...NORTHWEST KINGMAN...GOLDEN VALLEY...HIGHWAY 93. 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 BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3531 11438 3538 11404 3521 11398 3518 11436 $$ ASG
2 follow-up statements
720 WGUS75 KVEF 092341 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 441 PM MST SUN SEP 9 2012 AZC015-100045- /O.CON.KVEF.FF.W.0190.000000T0000Z-120910T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 441 PM MST SUN SEP 9 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR WEST CENTRAL MOHAVE COUNTY... AT 432 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN AROUND KINGMAN AND GOLDEN VALLEY. THESE STORMS WITH EXCESSIVE RAIN WERE NEARLY STATIONARY. NEW RAINFALL ON TOP OF RUNOFF FROM HEAVY RAINFALL EARLIER WILL KEEP THE THREAT OF FLASH FLOODING GOING THROUGH 545 PM. LOCATIONS IMPACTED INCLUDE... NEW KINGMAN-BUTLER AND GOLDEN VALLEY. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES... AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3531 11438 3538 11404 3521 11398 3518 11436 $$ JH
011 WGUS75 KVEF 100042 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 542 PM MST SUN SEP 9 2012 AZC015-100050- /O.EXP.KVEF.FF.W.0190.000000T0000Z-120910T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 542 PM MST SUN SEP 9 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 545 PM MST FOR WEST CENTRAL MOHAVE COUNTY... THE HEAVY RAIN THAT PROMPTED THE FLASH FLOOD WARNING HAS WEAKENED WITH ONLY LIGHT RAIN IN THE GENERAL AREA. HOWEVER...THERE HAVE BEEN REPORTS OF SEVERAL ROADS IN GOLDEN VALLEY THAT ARE CLOSED DUE TO FLOODING. LAT...LON 3531 11438 3538 11404 3521 11398 3518 11436 $$ ASG
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 1:58 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 35 min |
| Sep 9, 2:26 PM MST | Flash Flood Watch | VEF | Mohave | 55 hr |
| Sep 9, 3:17 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 43 min |
Nearby
Flash Flood Warnings in Arizona, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.