Alert archive / California / Flash Flood Warnings in 2021
Flash Flood Warning 72, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 26, 2021, 11:36 AM PDT for Inyo County, San Bernardino County, California. It was in force for 3 hr. 2 reports 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 26, 2021, 11:36 AM PDT (18:36 UTC)
- Expired
- Jul 26, 2021, 2:45 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
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 26, 12:00 PM PDT | FLASH FLOOD | 14 Nnw Baker, CA | CHP REPORTS ROADWAY FLOODING ON HIGHWAY 127 AT MILE MARKER 15. GREATER THAN 6 INCHES OF FLOWING WATER MAKING THE ROAD IMPASSABLE. |
| Jul 26, 12:41 PM PDT | FLASH FLOOD | 10 Ssw Shoshone, CA | WATER ACROSS ROADWAY CA-127. |
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 12:00Z, 6.6 hours before the alert went out and 97 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.
307
WGUS55 KVEF 261836
FFWVEF
CAC027-071-262145-
/O.NEW.KVEF.FF.W.0072.210726T1836Z-210726T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
1136 AM PDT Mon Jul 26 2021
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Southern Inyo County in south central California...
San Bernardino County in southern California...
* Until 245 PM PDT.
* At 1136 AM PDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1.5 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly and will impact Highway 127 between Shoshone and Dumont
Dunes.
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...
Shoshone, Dumont Dunes, Sr 127 Near Dumont Dunes and Tecopa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3582 11650 3592 11637 3591 11616 3583 11599
3560 11589 3544 11607 3540 11620 3555 11637
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CO2 follow-up statements
256
WGUS75 KVEF 261909
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
1209 PM PDT Mon Jul 26 2021
CAC027-071-262145-
/O.CON.KVEF.FF.W.0072.000000T0000Z-210726T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-San Bernardino CA-
1209 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 245 PM PDT THIS
AFTERNOON FOR SOUTHERN INYO AND SAN BERNARDINO COUNTIES...
At 1209 PM PDT, Heavy rain continues and flash flooding is ongoing
or expected to begin
shortly and will impact Highway 127 between Shoshone and Dumont
Dunes.
HAZARD...Life-threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life-threatening flash flooding of low-water crossings,
creeks, normally dry washes and roads.
Some locations that will experience flash flooding include...
Shoshone, Dumont Dunes, Sr 127 Near Dumont Dunes and Tecopa.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3582 11650 3592 11637 3591 11616 3583 11599
3560 11589 3544 11607 3540 11620 3555 11637
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
CO785
WGUS75 KVEF 262139
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
239 PM PDT Mon Jul 26 2021
CAC027-071-262149-
/O.EXP.KVEF.FF.W.0072.000000T0000Z-210726T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Inyo CA-San Bernardino CA-
239 PM PDT Mon Jul 26 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 245 PM PDT THIS AFTERNOON FOR
SOUTHERN INYO AND SAN BERNARDINO 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 3582 11650 3592 11637 3591 11616 3583 11599
3560 11589 3544 11607 3540 11620 3555 11637
$$
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, 12:29 PM PDT | Flash Flood Warning | VEF | Inyo | 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, 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.