Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 13, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jun 12, 2015, 6:58 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
- Jun 12, 2015, 6:58 PM PDT (01:58 UTC)
- Expired
- Jun 12, 2015, 10:00 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), 130 km from the middle of the area, began a volume at 01:59 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 |
|---|---|---|---|
| Jun 12, 7:09 PM PDT | HEAVY RAIN 0.5 | 6 Nnw Landers (Ar190), CA | TRAINED SPOTTER REPORTS 0.50 INCHES OF RAIN FELL BETWEEN 642 PM AND 709 PM...0.25 INCHES OF THAT FELL IN THE FIRST 7 MINUTES. |
| Jun 12, 7:30 PM PDT | FLASH FLOOD | 5 N Landers (Ar190), CA | TRAINED SPOTTER REPORTS WATER...ROCKS...AND DEBRIS FLOWING ACROSS LINN AND BELLFIELD ROADS IN LANDERS CA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 00:00Z, 2.0 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 645 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- -113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
840
WGUS55 KVEF 130158
FFWVEF
CAC071-130500-
/O.NEW.KVEF.FF.W.0013.150613T0158Z-150613T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
658 PM PDT FRI JUN 12 2015
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 1000 PM PDT
* AT 656 PM PDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN NEAR LANDERS. RAINFALL RATES OF A QUARTER OF AN INCH IN
TEN MINUTES HAVE BEEN REPORTED AND WILL CAUSE RAPID FLASH FLOODING
NEAR LOCAL WASHES AND DRAINAGES.
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 3432 11648 3436 11641 3447 11640 3447 11642
3453 11642 3453 11646 3459 11647 3460 11622
3427 11620 3426 11644
$$
OUTLER2 follow-up statements
072
WGUS75 KVEF 130250
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
750 PM PDT FRI JUN 12 2015
CAC071-130500-
/O.CON.KVEF.FF.W.0013.000000T0000Z-150613T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
750 PM PDT FRI JUN 12 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM PDT FOR
SOUTH CENTRAL SAN BERNARDINO COUNTY...
AT 749 PM PDT...WHILE HEAVY RAIN HAS EXITED MOST OF THE WARNING
AREA...LOCAL WASHES AND DRAINAGES REMAIN ELEVATED AND ADDITIONAL
STORMS NEAR LUDLOW MAY MOVE INTO THE REGION LATER THIS EVENING
POSING A CONTINUED FLASH FLOOD THREAT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
ROADS. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO
CROSS A FLOODED ROAD OR ENTER A FLOOD CHANNEL. TURN AROUND...DONT
DROWN! REPORT FLOODING TO THE LAS VEGAS NATIONAL WEATHER SERVICE VIA
FACEBOOK OR TWITTER.
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3432 11648 3436 11641 3447 11640 3447 11642
3453 11642 3453 11646 3459 11647 3460 11622
3427 11620 3426 11644
$$
OUTLER718
WGUS75 KVEF 130451
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
951 PM PDT FRI JUN 12 2015
CAC071-130500-
/O.EXP.KVEF.FF.W.0013.000000T0000Z-150613T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
951 PM PDT FRI JUN 12 2015
...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL SAN BERNARDINO COUNTY
WILL EXPIRE AT 1000 PM PDT...
A FEW LIGHT TO MODERATE SHOWERS REMAIN THIS EVENING BUT THE HEAVY
RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE A THREAT.
LAT...LON 3432 11648 3436 11641 3447 11640 3447 11642
3453 11642 3453 11646 3459 11647 3460 11622
3427 11620 3426 11644
$$
OUTLERThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 5:23 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 112 min |
| Jun 12, 6:15 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jun 12, 8:04 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jun 13, 11:27 AM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
Nearby
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.