Alert archive / California / Flash Flood Warnings in 2021
Flash Flood Warning 89, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 30, 2021, 6:42 PM PDT for Inyo County, California. It was in force for 2 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
- Jul 30, 2021, 6:42 PM PDT (01:42 UTC)
- Expired
- Jul 30, 2021, 9:00 PM PDT
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County Inyo County, CA
The radar
The Edwards AFB radar (KEYX), 154 km from the middle of the area, began a volume at 01:46 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 |
|---|---|---|---|
| Jul 30, 7:00 PM PDT | FLASH FLOOD | 4 Se Furnace Creek, CA | CHP REPORTED FLOODING AND MUD OVER THE ROADWAY AT ZABRISKIE POINT IN DEATH VALLEY ON ZABRISKIE POINT DRIVE. THEY SAID FLOODING IS ESTIMATED TO STRETCH AS FAR NORTH AS FURNACE CREEK UP STATE ROUTE 190. FLOODING WAS ESTIMATED TO HAVE BEGUN AROUND 1900. THIS TIME |
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, 1.7 hours before the alert went out and 113 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
- 140 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 2063 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
489
WGUS55 KVEF 310142
FFWVEF
CAC027-310445-
/O.NEW.KVEF.FF.W.0089.210731T0142Z-210731T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
642 PM PDT Fri Jul 30 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
South Central Inyo County in south central California...
* Until 945 PM PDT.
* At 642 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain over Furnace Creek in Death Valley National Park. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Life-threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water
crossings, creeks, normally dry washes and roads.
* Some locations that will experience flash flooding include...
Furnace Creek and Texas Springs Campground.
Highways 190 and 178.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3614 11659 3588 11653 3582 11656 3585 11706
3664 11709 3677 11705 3682 11699 3682 11696
3654 11659
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
BKP2 follow-up statements
654
WGUS75 KVEF 310313
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
813 PM PDT Fri Jul 30 2021
CAC027-310445-
/O.CON.KVEF.FF.W.0089.000000T0000Z-210731T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-
813 PM PDT Fri Jul 30 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM PDT THIS
EVENING FOR SOUTH CENTRAL INYO COUNTY...
At 813 PM PDT, Doppler radar indicated thunderstorms producing heavy
rain near Furnace Creek in Death Valley National Park. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Furnace Creek and Texas Springs Campground.
Highways 190 and 178.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3614 11659 3588 11653 3582 11656 3585 11706
3664 11709 3677 11705 3682 11699 3682 11696
3654 11659
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
BKP671
WGUS75 KVEF 310400
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
900 PM PDT Fri Jul 30 2021
CAC027-310410-
/O.CAN.KVEF.FF.W.0089.000000T0000Z-210731T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-
900 PM PDT Fri Jul 30 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL INYO COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 500 AM PDT Sunday for
portions of northwest Arizona, southeast California and Nevada.
LAT...LON 3614 11659 3588 11653 3582 11656 3585 11706
3664 11709 3677 11705 3682 11699 3682 11696
3654 11659
$$
BKPThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 5:13 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 2 hr |
Nearby
Flash Flood Warnings in California, 2021Every flash flood warning in 2021
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.