Alert archive / California / Flash Flood Warnings in 2014
Flash Flood Warning 21, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 8, 2014, 6:20 PM PDT for San Bernardino County, California; Mohave County, Arizona. It was in force for 3 hr. 3 reports 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 8, 2014, 6:20 PM PDT (01:20 UTC)
- Expired
- Jul 8, 2014, 9:15 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
Counties Mohave County, AZ, San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 83 km from the middle of the area, began a volume at 01:23 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 8, 6:32 PM PDT | FLASH FLOOD | W Mohave Valley, AZ | 6 TO 8 INCHES OF FLOWING WATER AT VALLEY PARKWAY AND PUMA. |
| Jul 8, 7:25 PM PDT | FLASH FLOOD | 2 N Needles, CA | SPOTTER REPORTS THE K STREET UNDERPASS IS CLOSED DUE TO FLOODING. |
| Jul 8, 7:55 PM PDT | FLASH FLOOD | 2 N Needles, CA | CONFIRMED ROAD CLOSURES FROM FLOODING AROUND NEEDLES INCLUDE BROADWAY, LILLYHILL AND FRONT STREETS. RIVER RD CLOSED 3 MILES NORTH OF NEEDLES. CONFIRMED FLOODING ON HIGHWAY 95 JUST SOUTH OF TOWN. |
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 00:00Z, 1.3 hours before the alert went out and 174 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
- 3162 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
360
WGUS55 KVEF 090120
FFWVEF
AZC015-CAC071-090415-
/O.NEW.KVEF.FF.W.0021.140709T0120Z-140709T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
620 PM PDT TUE JUL 8 2014
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EXTREME SOUTHWESTERN MOHAVE COUNTY IN NORTHWEST ARIZONA...
EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 915 PM PDT/915 PM MST/
* AT 618 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM NEAR MOHAVE VALLEY...OR 16 MILES
SOUTH OF BULLHEAD CITY. THE STORM PRODUCING FLASH FLOODING WAS
MOVING NORTH AT 5 MPH.
* LOCATIONS IMPACTED INCLUDE...
MOHAVE VALLEY AND RIVERSIDE ADVENTURE RV PARK...NEEDLES
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!
REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.
&&
LAT...LON 3502 11487 3501 11465 3499 11462 3503 11463
3503 11452 3483 11453 3484 11486
$$
OUTLER2 follow-up statements
935
WGUS75 KVEF 090318
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
818 PM PDT TUE JUL 8 2014
AZC015-CAC071-090415-
/O.CON.KVEF.FF.W.0021.000000T0000Z-140709T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-
818 PM PDT TUE JUL 8 2014
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM PDT/915 PM
MST/ FOR EAST CENTRAL SAN BERNARDINO AND SOUTHWESTERN MOHAVE
COUNTIES...
AT 812 PM MST...FLASH FLOODING FROM EARLIER THUNDERSTORMS CONTINUES
TO IMPACT THE NEEDLES AND MOHAVE VALLEY AREA. WHILE THE RAIN HAS
ENDED...EXCESSIVE RUNOFF WILL CONTINUE FOR ANOTHER HOUR BEFORE
SLOWLY SUBSIDING.
LOCATIONS IMPACTED INCLUDE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN!
REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.
&&
LAT...LON 3502 11487 3501 11465 3499 11462 3503 11463
3503 11452 3483 11453 3484 11486
$$
OUTLER969
WGUS75 KVEF 090410 RRA
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
910 PM PDT TUE JUL 8 2014
AZC015-CAC071-090420-
/O.EXP.KVEF.FF.W.0021.000000T0000Z-140709T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MOHAVE AZ-SAN BERNARDINO CA-
910 PM PDT TUE JUL 8 2014
...THE FLASH FLOOD WARNING WILL EXPIRE AT 915 PM PDT/915 PM MST/ FOR
EAST CENTRAL SAN BERNARDINO AND SOUTHWESTERN MOHAVE COUNTIES...
LIGHT TO MODERATE RAIN CONTNUES TO FALL ACROSS THE AREA BUT WILL
SLOWLY DIMINISH THIS EVENING. RUNOFF MAY CONTINUE THROUGH MIDNIGHT
IN SOME AREAS.
LAT...LON 3502 11487 3501 11465 3499 11462 3503 11463
3503 11452 3483 11453 3484 11486
$$
OUTLERThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 5:06 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 8, 5:51 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 39 min |
| Jul 8, 6:06 PM PDT | Flash Flood Warning | VEF | San Bernardino | 4 hr |
| Jul 8, 6:27 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 48 min |
| Jul 8, 7:03 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 8, 11:43 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 9, 4:43 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 47 min |
| Jul 8, 6:12 PM PDT | Flash Flood Warning | VEF | Mohave | 3 hr |
Nearby
Flash Flood Warnings in California, 2014Flash Flood Warnings in Arizona, 2014Every flash flood warning in 2014
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.