Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 94, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 18, 2016, 9:06 PM PDT for San Bernardino County, California. It was in force for 114 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
- Aug 18, 2016, 9:06 PM PDT (04:06 UTC)
- Expired
- Aug 18, 2016, 11:00 PM PDT
- In force
- 114 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), 177 km from the middle of the area, began a volume at 04:08 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, 4.1 hours before the alert went out and 186 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
- 124 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 3543 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
635
WGUS55 KVEF 190406
FFWVEF
CAC071-190600-
/O.NEW.KVEF.FF.W.0094.160819T0406Z-160819T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
906 PM PDT THU AUG 18 2016
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 1100 PM PDT
* AT 905 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN IN THE BIG RIVER AND EARP AREAS. FLASH FLOODING IS
EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EARP AND BIG RIVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3427 11456 3427 11421 3421 11421 3417 11425
3417 11429 3414 11432 3413 11435 3412 11437
3411 11441 3408 11444 3408 11456
$$
MORGAN2 follow-up statements
119
WGUS75 KVEF 190452
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
952 PM PDT THU AUG 18 2016
CAC071-190600-
/O.CON.KVEF.FF.W.0094.000000T0000Z-160819T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
952 PM PDT THU AUG 18 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 PM PDT FOR
SOUTHEASTERN SAN BERNARDINO COUNTY...
AT 951 PM PDT...DOPPLER RADAR INDICATED THAT RAIN WAS TAPERING OFF
IN THE EARP AND BIG RIVER AREA. HOWEVER, HEAVY RAIN FELL A BIT
EARLIER, AND WATER MAY STILL BE FLOWING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
EARP AND BIG RIVER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3427 11456 3427 11421 3421 11421 3417 11425
3417 11429 3414 11432 3413 11435 3412 11437
3411 11441 3408 11444 3408 11456
$$
MORGAN980
WGUS75 KVEF 190552
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1052 PM PDT THU AUG 18 2016
CAC071-190600-
/O.EXP.KVEF.FF.W.0094.000000T0000Z-160819T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
1052 PM PDT THU AUG 18 2016
...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SAN BERNARDINO COUNTY
WILL EXPIRE AT 1100 PM PDT...
MOST OF THE HEAVY RAIN HAS ENDED IN THE BIG RIVER AND EARP AREA, BUT
ONE MORE SMALL STORM COULD PASS THROUGH BEFORE MIDNIGHT. PLEASE
CONTINUE TO BE ALERT FOR WATER RUNNING OVER THE ROADS, AND HEED ANY
REMAINING ROAD CLOSURES.
LAT...LON 3427 11456 3427 11421 3421 11421 3417 11425
3417 11429 3414 11432 3413 11435 3412 11437
3411 11441 3408 11444 3408 11456
$$
MORGANThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 5:26 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 18, 7:21 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 19, 2:44 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 19, 4:41 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
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.