Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 82, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 31, 2012, 4:15 PM 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 31, 2012, 4:15 PM MST (23:15 UTC)
- Expired
- Jul 31, 2012, 6:15 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 Las Vegas radar (KESX), 84 km from the middle of the area, began a volume at 23:14 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 12:00Z, 11.3 hours before the alert went out and 179 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
- 121 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 1334 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
878 WGUS55 KVEF 312315 FFWVEF AZC015-010115- /O.NEW.KVEF.FF.W.0082.120731T2315Z-120801T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 415 PM MST TUE JUL 31 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 615 PM MST. * AT 410 PM MST...A TRAINED WEATHER SPOTTER REPORTED THAT HIGHWAY 66 REMAINS CLOSED BETWEEN MILER MARKERS 23 AND 35 AND THAT FLASH FLOODING WAS CONTINUING...THEREFORE THE FLASH FLOOD WARNING HAS BEEN EXTENDED FOR WEST CENTRAL MOHAVE COUNTY NEAR OATMAN. * LOCATIONS IMPACTED INCLUDE... OATMAN. 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 3509 11452 3515 11432 3496 11430 3493 11450 $$ SC
2 follow-up statements
148 WGUS75 KVEF 010017 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 517 PM MST TUE JUL 31 2012 AZC015-010115- /O.CON.KVEF.FF.W.0082.000000T0000Z-120801T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 517 PM MST TUE JUL 31 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MST FOR WEST CENTRAL MOHAVE COUNTY... AT 506 PM MST...LOCAL LAW ENFORCEMENT REPORTS SILVER CREEK ROAD TO ROUTE 66 CLOSED DUE TO FLOODING AS WELL AS ROUTE 66 EASTBOUND OUT OF OATMAN CLOSED DUE TO FLOODING. THE NATIONAL WEATHER SERVICE RADAR CURRENTLY DOES NOT INDICATE ANY ADDITIONAL RAIN IN THE VICINITY OF OATMAN. LOCATIONS IMPACTED INCLUDE...OATMAN. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3509 11452 3515 11432 3496 11430 3493 11450 $$ SC
816 WGUS75 KVEF 010112 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 612 PM MST TUE JUL 31 2012 AZC015-010118- /O.EXP.KVEF.FF.W.0082.000000T0000Z-120801T0115Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 612 PM MST TUE JUL 31 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM MST FOR WEST CENTRAL MOHAVE COUNTY... RUNOFF FROM THE EARLIER RAINFALL SHOULD HAVE SUBSIDED IN MOST LOCATIONS...ALTHOUGH LEFTOVER DEBRIS FLOWS AND STANDING WATER WILL CONTINUE TO POSE PROBLEMS AN AREA ROADWAYS IN THE VICINITY OF OATMAN. THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 615 PM MST FOR WEST CENTRAL MOHAVE COUNTY. LAT...LON 3509 11452 3515 11432 3496 11430 3493 11450 $$ SC
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 2:29 AM MST | Flash Flood Watch | VEF | Mohave | 19 hr |
| Jul 31, 12:14 PM MST | Areal Flood Advisory | VEF | Mohave | 83 min |
| Jul 31, 1:55 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
| Jul 31, 2:21 PM MST | Flash Flood Warning | VEF | Mohave | 114 min |
| Jul 31, 2:42 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 31, 2:48 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 31, 3:12 PM MST | Areal Flood Advisory | VEF | Mohave | 113 min |
| Jul 31, 3:24 PM MST | Flash Flood Warning | VEF | Mohave | 111 min |
| Jul 31, 4:29 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.