Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 99, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 22, 2016, 5:45 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
- Aug 22, 2016, 5:45 PM PDT (00:45 UTC)
- Expired
- Aug 22, 2016, 8:45 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 Las Vegas radar (KESX), 95 km from the middle of the area, began a volume at 00:48 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 22, 7:28 PM PDT | FLASH FLOOD | 8 Wnw Needles, CA | ROADWAY FLOODING ON HIGHWAY 95 NEAR I-40. ROAD NOT CLOSED BUT SOME CARS WERE BEING WASHED OFF ROAD BUT ABLE TO GET BACK ON THE HIGHWAY. ROCK IN THE ROADWAY. . |
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, 0.8 hours before the alert went out and 184 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
- 472 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 3384 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
573
WGUS55 KVEF 230045
FFWVEF
CAC071-230345-
/O.NEW.KVEF.FF.W.0099.160823T0045Z-160823T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
545 PM PDT MON AUG 22 2016
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 845 PM PDT
* AT 541 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN OVER GOFFS ROAD TO NEEDLES INCLUDING HIGHWAY 95
INTERSECTION WITH GOFFS ROAD. FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEEDLES...HIGHWAY 95 AND GOFFS ROAD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3522 11492 3500 11464 3487 11464 3483 11458
3477 11456 3471 11447 3458 11442 3457 11522
$$
JS2 follow-up statements
017
WGUS75 KVEF 230219
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
719 PM PDT MON AUG 22 2016
CAC071-230345-
/O.CON.KVEF.FF.W.0099.000000T0000Z-160823T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
719 PM PDT MON AUG 22 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PDT FOR
EAST CENTRAL SAN BERNARDINO COUNTY...
AT 718 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS CONTINUING TO
PRODUCE HEAVY RAIN ACROSS THE WARNED AREA.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEEDLES...GOFFS ROAD AND HIGHWAY 95 AND I-40.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3522 11492 3500 11464 3487 11464 3483 11458
3477 11456 3471 11447 3458 11442 3457 11522
$$
JS098
WGUS75 KVEF 230249
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
749 PM PDT MON AUG 22 2016
CAC071-230345-
/O.CON.KVEF.FF.W.0099.000000T0000Z-160823T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
749 PM PDT MON AUG 22 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM PDT FOR
EAST CENTRAL SAN BERNARDINO COUNTY...
AT 747 PM PDT...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING ON
HIGHWAY 95 NEAR INTERSTATE 40. VEHICLES ARE BEING WASHED OFF THE
ROAD FROM SWIFTLY FLOWING WATER. AVOID TRAVEL IN THIS AREA!
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
NEEDLES AND HIGHWAY 95 AND I-40.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 3522 11492 3500 11464 3487 11464 3483 11458
3477 11456 3471 11447 3458 11442 3457 11522
$$
CMSThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 6:20 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 22, 8:31 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 22, 8:46 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 22, 9:44 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.