Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 68, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 3, 2016, 6:20 PM PDT for San Bernardino County, California. It was in force for 3 hr. 2 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
- Aug 3, 2016, 6:20 PM PDT (01:20 UTC)
- Expired
- Aug 3, 2016, 9:15 PM PDT
- In force
- 3 hr
- 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), 85 km from the middle of the area, began a volume at 01:21 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 3, 7:29 PM PDT | FLASH FLOOD | 3 Nnw Needles, CA | HIGHWAY PATROL REPORTS ROADWAY FLOODING AT DAVID DRIVE AND RIVER DRIVE. APPROXIMATELY 10 VEHICLES STUCK IN WATER. . |
| Aug 3, 7:30 PM PDT | FLASH FLOOD | 8 Nnw Needles, CA | CALIFORNIA HIGHWAY PATROL REPORTS 10-60 FOOT SECTIONS OF NEEDLES HIGHWAY WASHED AWAY FROM FLOOD WATERS NEAR THE CAPRI ROAD INTERSECTION. TIME ESTIMATED FROM RADAR. |
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 176 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.
280
WGUS55 KVEF 040120
FFWVEF
CAC071-040415-
/O.NEW.KVEF.FF.W.0068.160804T0120Z-160804T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
620 PM PDT WED AUG 3 2016
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 915 PM PDT
* AT 618 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ALONG NEEDLES HIGHWAY. FLASH FLOODING IS EXPECTED TO
BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEEDLES HIGHWAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3507 11473 3507 11471 3500 11463 3490 11463
3487 11464 3485 11461 3485 11473
$$
JH2 follow-up statements
493
WGUS75 KVEF 040241
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
741 PM PDT WED AUG 3 2016
CAC071-040415-
/O.CON.KVEF.FF.W.0068.000000T0000Z-160804T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
741 PM PDT WED AUG 3 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM PDT FOR
EAST CENTRAL SAN BERNARDINO COUNTY...
AT 730 PM PDT...CALIFORNIA HIGHWAY PATROL REPORTED FLOODING AT DAVID
DRIVE AND RIVER DRIVE JUST NORTH OF NEEDLES. CARS WERE STUCK IN
WATER. DOPPLER RADAR INDICATED RAINFALL WAS DECREASING BUT RUNOFF
FROM EARLIER HEAVY RAIN WILL STILL RESULT IN FLASH FLOODING.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEEDLES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3507 11473 3507 11471 3500 11463 3490 11463
3487 11464 3485 11461 3485 11473
$$
JH083
WGUS75 KVEF 040406
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
906 PM PDT WED AUG 3 2016
CAC071-040416-
/O.EXP.KVEF.FF.W.0068.000000T0000Z-160804T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
906 PM PDT WED AUG 3 2016
...THE FLASH FLOOD WARNING FOR EAST CENTRAL SAN BERNARDINO COUNTY
WILL EXPIRE AT 915 PM PDT...
THE HEAVY RAIN HAS ENDED. FLOOD WATERS WILL CONTINUE TO RECEDE.
PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.
LAT...LON 3507 11473 3507 11471 3500 11463 3490 11463
3487 11464 3485 11461 3485 11473
$$
JHThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 3, 8:40 PM PDT | Flash Flood Warning | VEF | San Bernardino | 6 hr |
| Aug 4, 12:37 AM PDT | Flash Flood Warning | VEF | San Bernardino | 113 min |
| 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.