Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 1, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 3, 2011, 4:43 PM MST for Mohave County, Arizona. It was in force for 92 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
- Jul 3, 2011, 4:43 PM MST (23:43 UTC)
- Expired
- Jul 3, 2011, 6:15 PM MST
- In force
- 92 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), 93 km from the middle of the area, began a volume at 23:46 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 |
|---|---|---|---|
| Jul 3, 6:00 PM MST | FLASH FLOOD | 1 E Meadview, AZ | A SPOTTER REPORTED A SIX FOOT SWATH OF WATER RUNNING ACROSS A ROAD IN MEADVIEW. |
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, 11.7 hours before the alert went out and 153 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
- 5859 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
734
WGUS55 KVEF 032343
FFWVEF
AZC015-040115-
/O.NEW.KVEF.FF.W.0001.110703T2343Z-110704T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
443 PM MST SUN JUL 3 2011
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL MOHAVE COUNTY IN NORTHWEST ARIZONA...
* UNTIL 615 PM MST.
* AT 433 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM 7 MILES SOUTH OF GRAND CANYON
SKYWALK...OR 50 MILES NORTH OF KINGMAN. THE STORM PRODUCING VERY
HEAVY RAIN WAS MOVING NORTHWEST AROUND 15 MPH.
* LOCATIONS IMPACTED INCLUDE...MEADVIEW...GRAND CANYON RANCH AND
GRAND CANYON SKYWALK.
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.
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 3598 11418 3611 11405 3621 11398 3621 11370
3567 11354 3557 11375
$$
JENSEN2 follow-up statements
550
WGUS75 KVEF 040035
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
535 PM MST SUN JUL 3 2011
AZC015-040115-
/O.CON.KVEF.FF.W.0001.000000T0000Z-110704T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
535 PM MST SUN JUL 3 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM MST FOR
CENTRAL MOHAVE COUNTY...
AT 518 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN. THIS STORM WAS
LOCATED 11 MILES NORTHEAST OF MEADVIEW...OR 39 MILES SOUTHEAST OF
OVERTON...MOVING NORTHWEST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...MEADVIEW...GRAND CANYON RANCH AND GRAND
CANYON SKYWALK.
SPOTTER REPORTS AS OF 5 PM MST IN MEADVIEW INDICATED PLENTY OF
LIGHTNING...LIGHT RAIN FALL AND GUSTY WINDS. THE MAIN AREA OF HEAVY
RAINFALL HOWEVER INDICATED BY THE DOPPLER RADAR WAS JUST TO THE
SOUTHEAST OF MEADVIEW WHERE A REMOTE RAIN GAGE INDICATED UP TO 0.20
INCHES OF RAIN FELL WITHIN 15 MINUTES AND THAT OVER HALF AN INCH OF
RAIN HAS FALLEN IN THE PAST HOUR OR SINCE 430 PM MST.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.
CAMPERS AND HIKERS SHOULD BE ALERT TO THE POSSIBILITY OF RAPIDLY
RISING WATER AND BE PREPARED TO MOVE QUICKLY TO HIGHER GROUND IF
FLASH FLOODING IS OBSERVED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MST
MONDAY MORNING FOR SOUTHERN CALIFORNIA.
&&
LAT...LON 3598 11418 3611 11405 3621 11398 3621 11370
3567 11354 3557 11375
$$
JENSEN800
WGUS75 KVEF 040112
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
612 PM MST SUN JUL 3 2011
AZC015-040118-
/O.EXP.KVEF.FF.W.0001.000000T0000Z-110704T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-
612 PM MST SUN JUL 3 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 PM MST FOR CENTRAL
MOHAVE COUNTY...
THUNDERSTORMS PRODUCING HEAVY RAINFALL HAVE DISSIPATED OVER THE
WARNED AREA AND ALTHOUGH LIGHT TO MODERATE RAINFALL MAY BEEN SEEN
THROUGH THE EVENING HOURS...FLASH FLOODING IS NO LONGER EXPECTED.
HOWEVER TRAVELERS AND OTHERS ENGAGED IN OUTDOOR ACTIVITY IN THE
VICINITY OF THE GRAND CANYON SKYWALK AND MEADVIEW SHOULD BE AWARE
THAT WATER WILL LIKELY BE ENCOUNTERED IN THE NORMALLY DRY WASHES AND
IN LOW LYING AREAS. BE ESPECIALLY CAUTIOUS OVERNIGHT AS WATER IS
ESPECIALLY HARD TO SEE AT NIGHT.
LAT...LON 3598 11418 3611 11405 3621 11398 3621 11370
3567 11354 3557 11375
$$
JENSENNearby
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.