Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 80, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 4, 2017, 5:41 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
- Aug 4, 2017, 5:41 PM PDT (00:41 UTC)
- Expired
- Aug 4, 2017, 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), 96 km from the middle of the area, began a volume at 00:42 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 00:00Z, 0.7 hours before the alert went out and 90 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
- 229 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 1976 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
272
WGUS55 KVEF 050041
FFWVEF
CAC071-050345-
/O.NEW.KVEF.FF.W.0080.170805T0041Z-170805T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
541 PM PDT FRI AUG 4 2017
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
North central San Bernardino County in southern California...
* Until 845 PM PDT
* At 541 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain northeast San Bernardino County. Flash flooding is
expected to begin shortly.
* Some locations that will experience flooding include...
Baker, Mountain Pass, Nipton And Ivanpah Roads, Nipton, Sr 127 Near
Dumont Dunes, Dumont Dunes and Tecopa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3580 11658 3579 11574 3581 11573 3581 11565
3541 11515 3508 11626
$$
ASG1 follow-up statement
569
WGUS75 KVEF 050216
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
716 PM PDT FRI AUG 4 2017
CAC071-050225-
/O.CAN.KVEF.FF.W.0080.000000T0000Z-170805T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Bernardino CA-
716 PM PDT FRI AUG 4 2017
...THE FLASH FLOOD WARNING FOR NORTH CENTRAL SAN BERNARDINO COUNTY IS
CANCELLED...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.
LAT...LON 3580 11658 3579 11574 3581 11573 3581 11565
3541 11515 3508 11626
$$
ASGThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 10:45 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Aug 5, 4:33 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
Nearby
Flash Flood Warnings in California, 2017Every flash flood warning in 2017
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.