Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 5, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Apr 11, 2016, 3:53 PM PDT for San Bernardino County, California. It was in force for 3 hr. 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
- Apr 11, 2016, 3:53 PM PDT (22:53 UTC)
- Expired
- Apr 11, 2016, 6:45 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 Edwards AFB radar (KEYX), 60 km from the middle of the area, began a volume at 22:56 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 |
|---|---|---|---|
| Apr 11, 4:47 PM PDT | FLASH FLOOD | 7 Nnw Daggett, CA | FLOODING WASHING OUT ROADWAY AT MILE MARKER 4 ON FORT IRWIN ROAD. |
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 12:00Z, 10.9 hours before the alert went out and 196 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
- 13 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 730 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
640
WGUS55 KVEF 112253
FFWVEF
CAC071-120145-
/O.NEW.KVEF.FF.W.0005.160411T2253Z-160412T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
353 PM PDT MON APR 11 2016
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WEST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 645 PM PDT
* AT 351 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN OVER OWL CANYON CAMPGROUND AND ALONG FORT IRWIN ROAD
JUST NORTH OF BARSTOW. THE STORM IS NEARLY STATIONARY. FLASH
FLOODING IS EXPECTED TO BEGIN SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
OWL CANYON CAMPGROUND...FORT IRWIN ROAD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED ON ROADS...IN NORMALLY DRY WASHES AND LOW
LYING AREAS. 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.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3507 11679 3492 11683 3493 11708 3508 11706
$$
ASG2 follow-up statements
355 WGUS75 KVEF 120000 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 500 PM PDT MON APR 11 2016 CAC071-120145- /O.CON.KVEF.FF.W.0005.000000T0000Z-160412T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 500 PM PDT MON APR 11 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR WEST CENTRAL SAN BERNARDINO COUNTY... AT 458 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS NORTHERN PORTIONS OF BARSTOW INCLUDING IRWIN AND FORT IRWIN ROAD. AT 447 PM HIGHWAY PATROL REPORTED ROADWAY FLOODING AT MILE MARKER 4 ON FORT IRWIN ROAD. ADDITIONAL THUNDERSTORMS ARE EXPECTED THROUGH 600 PM AND ADDITIONAL FLOODING IS EXPECTED. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... OWL CANYON CAMPGROUND...FORT IRWIN ROAD. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED ON ROADS...IN NORMALLY DRY WASHES AND LOW LYING AREAS. NEVER TRY TO CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA FACEBOOK OR TWITTER. TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3507 11679 3492 11683 3493 11708 3508 11706 $$ ASG
197 WGUS75 KVEF 120144 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 644 PM PDT MON APR 11 2016 CAC071-120152- /O.EXP.KVEF.FF.W.0005.000000T0000Z-160412T0145Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 644 PM PDT MON APR 11 2016 ...THE FLASH FLOOD WARNING FOR WEST CENTRAL SAN BERNARDINO COUNTY WILL EXPIRE AT 645 PM PDT... FLOOD WATERS HAVE LARGELY RECEDED AND ARE NO LONGER EXPECTED TO POSE A THREAT TO FORT IRWIN ROAD NEAR MILE MARKER 4. SOME STANDING WATER WILL STILL BE POSSIBLE THIS EVENING. PLEASE CONTINUE TO HEED ANY ROAD CLOSURES. LAT...LON 3507 11679 3492 11683 3493 11708 3508 11706 $$ JGA
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 12:45 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.