Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 177, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 4, 2012, 10:48 AM MST for Mohave County, Arizona. It was in force for 117 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 4, 2012, 10:48 AM MST (17:48 UTC)
- Expired
- Sep 4, 2012, 12:45 PM MST
- In force
- 117 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Cedar City radar (KICX), 123 km from the middle of the area, began a volume at 17:50 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, 5.8 hours before the alert went out and 166 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
- 188 J/kg
- Mixed-layer CIN
- -100 J/kg
- Mixed-layer LCL
- 1448 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -3 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.
717 WGUS55 KVEF 041748 FFWVEF AZC015-041945- /O.NEW.KVEF.FF.W.0177.120904T1748Z-120904T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1048 AM MST TUE SEP 4 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME NORTHEASTERN MOHAVE COUNTY IN NORTHWEST ARIZONA... * UNTIL 1245 PM MST. * AT 1045 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM OVER NORTHEASTERN MOHAVE COUNTY...OR 33 MILES SOUTH OF COLORADO CITY. THE STORM PRODUCING VERY HEAVY RAIN WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE... ANTELOPE VALLEY ROAD BETWEEN THE MOUNT TRUMBULL LOOP AND THE AREA NEAR FINDLAY KNOLLS. 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. CAMPERS AND HIKERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF FLASH FLOODING IS OBSERVED. && LAT...LON 3640 11265 3641 11301 3663 11304 3661 11264 $$ STACHELSKI
2 follow-up statements
363 WGUS75 KVEF 041844 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1144 AM MST TUE SEP 4 2012 AZC015-041945- /O.CON.KVEF.FF.W.0177.000000T0000Z-120904T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 1144 AM MST TUE SEP 4 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM MST FOR EXTREME NORTHEASTERN MOHAVE COUNTY... AT 1140 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN. THIS STORM WAS LOCATED OVER EXTREME NORTHEASTERN MOHAVE COUNTY...OR 34 MILES SOUTH OF COLORADO CITY. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY. RADAR ESTIMATES OF WELL OVER TWO INCHES HAVE BEEN SHOWN IN THIS AREA IN THE LAST HOUR AND ONE AUTOMATED RAIN GAUGE HAS RECORDED NEARLY AN INCH IN AN HOUR. LOCATIONS IMPACTED INCLUDE... AREAS ALONG ANTELOPE VALLEY ROAD FROM THE MOUNT TRUMBULL LOOP TO NEAR FINDLAY KNOLLS. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. CAMPERS AND HIKERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF FLASH FLOODING IS OBSERVED. && LAT...LON 3640 11265 3641 11301 3663 11304 3661 11264 $$ STACHELSKI
320 WGUS75 KVEF 041945 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1245 PM MST TUE SEP 4 2012 AZC015-041954- /O.EXP.KVEF.FF.W.0177.000000T0000Z-120904T1945Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ MOHAVE AZ- 1245 PM MST TUE SEP 4 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 1245 PM MST FOR EXTREME NORTHEASTERN MOHAVE COUNTY... HEAVY RAIN OVER THE SOUTHERN PORTION OF ANTELOPE VALLEY ROAD HAS ENDED. HOWEVER WATER MAY STILL LINGER IN LOW SPOTS IN THIS AREA. BE ALERT FOR POTENTIAL WASHOUTS OF THE ROAD AS WELL IF YOU HAVE ANY TRAVEL PLANS IN THIS AREA. LAT...LON 3640 11265 3641 11301 3663 11304 3661 11264 $$ STACHELSKI
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 12:11 PM MST | Flash Flood Warning | VEF | Mohave | 64 min |
| Sep 4, 2:36 PM MST | Flash Flood Warning | VEF | Mohave | 114 min |
| Sep 4, 2:54 PM MST | Flash Flood Warning | VEF | Mohave | 2 hr |
| Sep 4, 3:47 PM MST | Flash Flood Warning | VEF | Mohave | 34 min |
| Sep 4, 4:50 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 40 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.