Alert archive / California / Flash Flood Warnings in 2018
Flash Flood Warning 52, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 13, 2018, 2:48 PM PDT for San Bernardino County, California. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2018, 2:48 PM PDT (21:48 UTC)
- Expired
- Jul 13, 2018, 5:45 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), 102 km from the middle of the area, began a volume at 21:49 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.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 9.8 hours before the alert went out and 192 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
- 358 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
168
WGUS55 KVEF 132148
FFWVEF
CAC071-140045-
/O.NEW.KVEF.FF.W.0052.180713T2148Z-180714T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
248 PM PDT FRI JUL 13 2018
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Eastern San Bernardino County in southern California...
* Until 545 PM PDT.
* At 247 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is expected to
begin shortly.
* Some locations that will experience flooding include...
Needles.
This includes Interstate 40 in California between mile markers 138
and 152.
LAT...LON 3484 11480 3491 11463 3487 11464 3484 11459
3483 11458 3477 11456 3473 11451 3467 11465
$$
AW2 follow-up statements
378
WGUS75 KVEF 132319
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
419 PM PDT FRI JUL 13 2018
CAC071-140045-
/O.CON.KVEF.FF.W.0052.000000T0000Z-180714T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
419 PM PDT FRI JUL 13 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM PDT FOR
EASTERN SAN BERNARDINO COUNTY...
At 419 PM PDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Flash flooding is expected to begin
shortly.
Some locations that will experience flooding include...
Needles.
This includes Interstate 40 in California between mile markers 138
and 152.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3484 11480 3491 11463 3487 11464 3484 11459
3483 11458 3477 11456 3473 11451 3467 11465
$$
AW270
WGUS75 KVEF 140036
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
536 PM PDT FRI JUL 13 2018
CAC071-140045-
/O.EXP.KVEF.FF.W.0052.000000T0000Z-180714T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
536 PM PDT FRI JUL 13 2018
...THE FLASH FLOOD WARNING FOR EASTERN SAN BERNARDINO COUNTY WILL
EXPIRE AT 545 PM PDT...
Flood waters have receded. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3484 11480 3491 11463 3487 11464 3484 11459
3483 11458 3477 11456 3473 11451 3467 11465
$$
AWThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 5:44 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 13, 11:39 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 13, 1:06 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 13, 2:17 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 13, 3:23 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2018Every flash flood warning in 2018
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.