Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 75, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 4, 2016, 12:37 AM PDT for San Bernardino County, California. It was in force for 113 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
- Aug 4, 2016, 12:37 AM PDT (07:37 UTC)
- Expired
- Aug 4, 2016, 2:30 AM PDT
- In force
- 113 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), 63 km from the middle of the area, began a volume at 07:41 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 |
|---|---|---|---|
| Aug 4, 2:29 AM PDT | FLASH FLOOD | 5 E Mountain Pass, CA | CALIFORNIA HIGHWAY PATROL REPORTS RUNNING WATER OVER NIPTON ROAD AT THE I-15 INTERCHANGE. A VEHICLE IS STUCK IN THE FLOOD WATERS. |
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, 7.6 hours before the alert went out and 106 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
- 1079 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 2895 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
487
WGUS55 KVEF 040737
FFWVEF
CAC071-040930-
/O.NEW.KVEF.FF.W.0075.160804T0737Z-160804T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1237 AM PDT THU AUG 4 2016
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 230 AM PDT
* AT 1236 AM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE MOJAVE NATIONAL PRESERVE, ESPECIALLY OVER
MORNING STAR MINE ROAD. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CIMA...NIPTON AND IVANPAH ROADS...NIPTON AND MOUNTAIN PASS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
&&
LAT...LON 3520 11559 3569 11574 3578 11561 3548 11522
3518 11526
$$
MORGAN2 follow-up statements
375
WGUS75 KVEF 040827
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
127 AM PDT THU AUG 4 2016
CAC071-040930-
/O.CON.KVEF.FF.W.0075.000000T0000Z-160804T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
127 AM PDT THU AUG 4 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM PDT FOR
NORTH CENTRAL SAN BERNARDINO COUNTY...
AT 126 AM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN CONTINUING OVER THE MOJAVE NATIONAL PRESERVE AREA. THE
HEAVIEST RAIN WAS FALLING NEAR MOUNTAIN PASS, OVER MORNING STAR MINE
ROAD, AND WAS APPROACHING CIMA ROAD.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CIMA...NIPTON AND IVANPAH ROADS...NIPTON AND MOUNTAIN PASS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.
&&
LAT...LON 3520 11559 3569 11574 3578 11561 3548 11522
3518 11526
$$
MORGAN074
WGUS75 KVEF 040926
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
226 AM PDT THU AUG 4 2016
CAC071-040931-
/O.EXP.KVEF.FF.W.0075.000000T0000Z-160804T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
226 AM PDT THU AUG 4 2016
...THE FLASH FLOOD WARNING FOR NORTH CENTRAL SAN BERNARDINO COUNTY
WILL EXPIRE AT 230 AM PDT...
THE HEAVY RAIN HAS ENDED IN THE MOUNTAIN PASS AREA, AND FLOODING IS
NO LONGER EXPECTED TO POSE A THREAT. HOWEVER, VERY HEAVY RAIN WAS
STILL FALLING OVER THE MOJAVE NATIONAL PRESERVE, AND A NEW FLASH
FLOOD WARNING HAS BEEN ISSUED UNTIL 430 AM PDT FOR THAT AREA. PLEASE
CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 3520 11559 3569 11574 3578 11561 3548 11522
3518 11526
$$
MORGANThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 6:20 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 3, 8:40 PM PDT | Flash Flood Warning | VEF | San Bernardino | 6 hr |
| Aug 4, 2:24 AM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 4, 1:49 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 4, 3:25 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 4, 4:39 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 5 hr |
| Aug 4, 4:42 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.