Alert archive / California / Flash Flood Warnings in 2021
Flash Flood Warning 75, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 26, 2021, 12:51 PM PDT for Inyo County, 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 26, 2021, 12:51 PM PDT (19:51 UTC)
- Expired
- Jul 26, 2021, 4:00 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
Counties Inyo County, CA, San Bernardino County, CA
The radar
The Edwards AFB radar (KEYX), 112 km from the middle of the area, began a volume at 19:54 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, 7.9 hours before the alert went out and 157 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
- 467 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 1095 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- 35 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
757
WGUS55 KVEF 261951
FFWVEF
CAC027-071-262300-
/O.NEW.KVEF.FF.W.0075.210726T1951Z-210726T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
1251 PM PDT Mon Jul 26 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
South Central Inyo County in south central California...
San Bernardino County in southern California...
* Until 400 PM PDT.
* At 1251 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain across the Panamint Range moving west. Between 0.25 and
0.75 inches of rain have fallen. Flash flooding is likely along
Panamint Valley Road and Trona Wildrose Road along with regional
roadways in Death Valley.
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...
Homewood Canyon-Valley Wells, Trona, Panamint Springs and Searles
Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3614 11753 3637 11760 3642 11732 3631 11692
3608 11697 3579 11682 3561 11700 3577 11752
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CO2 follow-up statements
283
WGUS75 KVEF 262120
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
220 PM PDT Mon Jul 26 2021
CAC027-071-262300-
/O.CON.KVEF.FF.W.0075.000000T0000Z-210726T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-San Bernardino CA-
220 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 4 PM PDT THIS
AFTERNOON FOR SOUTH CENTRAL INYO AND SAN BERNARDINO COUNTIES...
At 220 PM PDT, Thunderstorm activity has begun to diminish over the
Panamints over the Panamint range but lingering flooding issues
persist. Flooding from earlier rainfall remains possible in Trona
Wildrose Road and Panamint Valley road...as well as other roadways
in Death Valley.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Homewood Canyon-Valley Wells, Trona, Panamint Springs and Searles
Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3614 11753 3637 11760 3642 11732 3631 11692
3608 11697 3579 11682 3561 11700 3577 11752
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CO682
WGUS75 KVEF 262256
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
356 PM PDT Mon Jul 26 2021
CAC027-071-262306-
/O.EXP.KVEF.FF.W.0075.000000T0000Z-210726T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-San Bernardino CA-
356 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 4 PM PDT THIS AFTERNOON FOR
SOUTH CENTRAL INYO AND SAN BERNARDINO COUNTIES...
The heavy rain has ended across most of Death Valley. Flooding is no
longer expected to pose a threat but some roads may remain impacted
in the park bounds. Please continue to heed remaining road closures.
A Flash Flood Watch remains in effect until 1100 PM PDT Monday for
portions of southeast California and southern Nevada.
LAT...LON 3614 11753 3637 11760 3642 11732 3631 11692
3608 11697 3579 11682 3561 11700 3577 11752
$$
COThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 6:59 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 25, 9:55 PM PDT | Severe Thunderstorm Warning | VEF | Inyo, San Bernardino | 50 min |
| Jul 25, 11:13 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Jul 26, 7:59 AM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 26, 8:12 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 26, 9:26 AM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Jul 26, 10:44 AM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Jul 26, 11:36 AM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Jul 26, 12:29 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 26, 1:12 PM PDT | Flash Flood Warning | VEF | Inyo | 4 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.