Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 2, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at May 4, 2015, 6:03 PM PDT for San Bernardino County, California. 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
- May 4, 2015, 6:03 PM PDT (01:03 UTC)
- Expired
- May 4, 2015, 8:00 PM PDT
- In force
- 117 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 178 km from the middle of the area, began a volume at 01:03 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
Yuma Prvg Ground, AZ (K1Y7), launched 00:00Z, 1.1 hours before the alert went out and 182 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
- 399 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1702 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
329
WGUS55 KVEF 050103
FFWVEF
CAC071-050300-
/O.NEW.KVEF.FF.W.0002.150505T0103Z-150505T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
603 PM PDT MON MAY 4 2015
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 800 PM PDT
* AT 601 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS WITH HEAVY
RAIN ALONG HIGHWAY 62 FROM MILE MARKER 112 TO THE ARIZONA STATE
LINE. FLASH FLOODING WILL BE POSSIBLE ON THE HIGHWAY THROUGH 8
PM.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EARP...VIDAL JUNCTION AND BIG RIVER.
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 3413 11478 3426 11452 3417 11429 3414 11432
3413 11435 3412 11437 3411 11441 3408 11444
3408 11476
$$
MORGAN1 follow-up statement
451
WGUS75 KVEF 050257
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
757 PM PDT MON MAY 4 2015
CAC071-050305-
/O.EXP.KVEF.FF.W.0002.000000T0000Z-150505T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
757 PM PDT MON MAY 4 2015
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SAN BERNARDINO COUNTY
WILL EXPIRE AT 800 PM PDT...
THE HEAVY RAIN HAS ENDED. A FEW LIGHT SHOWERS REMAIN ACROSS THE AREA
BUT RAINFALL AMOUNTS WILL BE RATHER LIGHT. FLOODING IS NO LONGER
EXPECTED TO POSE A THREAT.
LAT...LON 3413 11478 3426 11452 3417 11429 3414 11432
3413 11435 3412 11437 3411 11441 3408 11444
3408 11476
$$
MPNearby
Flash Flood Warnings in California, 2015Every flash flood warning in 2015
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.