Alert archive / California / Flash Flood Warnings in 2021
Flash Flood Warning 70, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 26, 2021, 10:44 AM PDT for Clark County, Nevada; 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, 10:44 AM PDT (17:44 UTC)
- Expired
- Jul 26, 2021, 1:45 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, Clark County, NV
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 5.7 hours before the alert went out and 59 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.
343
WGUS55 KVEF 261744
FFWVEF
CAC027-071-NVC003-262045-
/O.NEW.KVEF.FF.W.0070.210726T1744Z-210726T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
1044 AM PDT Mon Jul 26 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Southeastern Inyo County in south central California...
San Bernardino County in southern California...
West Central Clark County in southern Nevada...
* Until 145 PM PDT.
* At 1044 AM PDT, Doppler radar indicated thunderstorms producing
heavy rain near Sandy Valley. Between 0.5 and 1 inch of rain has
fallen. 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...
Sandy Valley and Goodsprings.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3580 11582 3594 11570 3595 11569 3598 11551
3591 11547 3583 11536 3573 11555 3568 11569
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CO2 follow-up statements
766
WGUS75 KVEF 261903
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
1203 PM PDT Mon Jul 26 2021
CAC027-071-NVC003-262045-
/O.CON.KVEF.FF.W.0070.000000T0000Z-210726T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-San Bernardino CA-Clark NV-
1203 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 PM PDT THIS
AFTERNOON FOR SOUTHEASTERN INYO, SAN BERNARDINO AND WEST CENTRAL
CLARK COUNTIES...
At 1203 PM PDT, Heaviest rain has lifted north of Sandy Valley but
localized runoff continues which may make local roads impassable.
Kingston Road and Sandy Valley roads in particular may be
temporarily impassable as well as local roadways in Sandy Valley.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Sandy Valley and Goodsprings.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3580 11582 3594 11570 3595 11569 3598 11551
3591 11547 3583 11536 3573 11555 3568 11569
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CO932
WGUS75 KVEF 262038
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
138 PM PDT Mon Jul 26 2021
CAC027-071-NVC003-262048-
/O.EXP.KVEF.FF.W.0070.000000T0000Z-210726T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-San Bernardino CA-Clark NV-
138 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 145 PM PDT THIS AFTERNOON FOR
SOUTHEASTERN INYO, SAN BERNARDINO AND WEST CENTRAL CLARK COUNTIES...
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 1100 PM PDT Monday for
portions of southeast California and southern Nevada.
LAT...LON 3580 11582 3594 11570 3595 11569 3598 11551
3591 11547 3583 11536 3573 11555 3568 11569
$$
COThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 5:12 PM PDT | Dust Storm Warning | VEF | Clark | 63 min |
| Jul 25, 5:37 PM PDT | Flash Flood Warning | VEF | Lincoln | 3 hr |
| Jul 25, 6:01 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 59 min |
| Jul 25, 6:06 PM PDT | Severe Thunderstorm Warning | VEF | Lincoln | 39 min |
| Jul 25, 7:08 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 52 min |
| Jul 25, 7:57 PM PDT | Severe Thunderstorm Warning | VEF | Clark, Lincoln | 63 min |
| Jul 25, 8:09 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 25, 8:59 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 25, 8:59 PM PDT | Severe Thunderstorm Warning | VEF | Clark, Nye | 61 min |
| Jul 25, 9:55 PM PDT | Severe Thunderstorm Warning | VEF | Clark, Nye | 50 min |
| Jul 26, 10:20 AM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 26, 11:32 AM PDT | Flash Flood Warning | VEF | Clark, Nye | 4 hr |
| Jul 26, 12:29 PM PDT | Flash Flood Warning | VEF | Nye | 3 hr |
| Jul 26, 12:40 PM PDT | Flash Flood Warning | VEF | Nye | 3 hr |
| Jul 26, 1:28 PM PDT | Flash Flood Warning | VEF | Lincoln | 3 hr |
| Jul 26, 2:05 PM PDT | Severe Thunderstorm Warning | VEF | Lincoln | 40 min |
| Jul 26, 4:30 PM PDT | Flash Flood Warning | VEF | Lincoln | 2 hr |
| Jul 26, 4:34 PM PDT | Severe Thunderstorm Warning | VEF | Lincoln | 41 min |
| Jul 25, 6:59 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| 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, 11:36 AM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Jul 26, 12:51 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Jul 26, 1:12 PM PDT | Flash Flood Warning | VEF | Inyo | 4 hr |
Nearby
Flash Flood Warnings in California, 2021Flash Flood Warnings in Nevada, 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.