Alert archive / California / Flash Flood Warnings in 2011
Flash Flood Warning 70, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 1, 2011, 4:43 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
- Aug 1, 2011, 4:43 PM PDT (23:43 UTC)
- Expired
- Aug 1, 2011, 6:45 PM PDT
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Inyo County, CA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 1, 5:54 PM PDT | FLASH FLOOD | 4 Se Keeler, CA | CALIFORNIA HIGHWAY PATROL REPORTED THAT STATE ROUTE 136 WAS CLOSED DUE TO A FLASH FLOOD. ABOUT 20 VEHICLES WERE TRAPPED ON HIGHWAY 190 DUE TO THE VOLUME OF WATER ON THE ROADS. |
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, 11.7 hours before the alert went out and 220 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
- 274 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1283 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
752
WGUS55 KVEF 012343
FFWVEF
CAC027-020145-
/O.NEW.KVEF.FF.W.0070.110801T2343Z-110802T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
443 PM PDT MON AUG 1 2011
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL INYO COUNTY IN EASTERN CALIFORNIA...
* UNTIL 645 PM PDT.
* AT 435 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM 7 MILES SOUTH OF KEELER...OR 10
MILES NORTHEAST OF OLANCHA. THE STORM PRODUCING VERY HEAVY RAIN WAS
NEARLY STATIONARY. ADDITIONAL STORMS WERE PRODUCING HEAVY RAINFALL
OVER THE SOUTHERN END OF THE EASTERN SIERRA NEVADA FROM NEAR
PEARSONVILLE TO OLANCHA. THIS ACTIVITY COULD PRODUCE RAINFALL
TOTALS IN EXCESS OF A HALF AN INCH WHICH COULD TRIGGER RUNOFF OF
WATER...ROCKS AND MUD ONTO AREA ROADS.
* LOCATIONS IMPACTED INCLUDE...KEELER AND OLANCHA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.
&&
LAT...LON 3634 11800 3647 11792 3653 11768 3623 11782
3580 11783 3580 11800 3586 11802 3587 11797
3601 11802 3603 11805 3613 11808 3615 11806
3623 11811
$$
STACHELSKI3 follow-up statements
177
WGUS75 KVEF 020044
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
544 PM PDT MON AUG 1 2011
CAC027-020145-
/O.CON.KVEF.FF.W.0070.000000T0000Z-110802T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
544 PM PDT MON AUG 1 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR
CENTRAL AND FAR SOUTHWEST INYO COUNTY...
AT 531 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN. THIS STORM WAS
LOCATED NEAR KEELER...OR 13 MILES SOUTHEAST OF LONE PINE. THE
THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY. RAINFALL
TOTALS OF TWO TO THREE INCHES HAVE BEEN ESTIMATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR NEAR THE INTERSECTION OF HIGHWAYS 136
AND 190. WATER...ROCKS AND MUD WILL BE LIKELY ON ROADS IN THIS AREA.
IN ADDITION...THUNDERSTORM ACTIVITY IN FAR SOUTHWEST INYO COUNTY HAS
PRODUCED RAINFALL TOTALS IN EXCESS OF A HALF AN INCH NEAR THE FAR
SOUTHERN SIERRA NEVADA WHICH COULD RESULT IN WATER AND MUD ON AREA
ROADS.
LOCATIONS IMPACTED INCLUDE...KEELER AND OLANCHA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.
&&
LAT...LON 3634 11800 3647 11792 3653 11768 3623 11782
3580 11783 3580 11800 3586 11802 3587 11797
3601 11802 3603 11805 3613 11808 3615 11806
3623 11811
$$
STACHELSKI270
WGUS75 KVEF 020122
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
622 PM PDT MON AUG 1 2011
CAC027-020145-
/O.CON.KVEF.FF.W.0070.000000T0000Z-110802T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
622 PM PDT MON AUG 1 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM PDT FOR
CENTRAL AND FAR SOUTHWESTERN INYO COUNTY...
AT 615 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
FLOODING NEAR THE INTERSECTION OF HIGHWAYS 136 AND 190 WITH AS MANY
AS 20 VEHICLES STRANDED. THIS STORM WAS LOCATED NEAR KEELER...OR 13
MILES SOUTHEAST OF LONE PINE. ALTHOUGH THE HEAVIEST RAIN HAS ENDED
IN THIS AREA...EDWARDS AIR FORCE BASE RADAR ESTIMATED TWO TO THREE
INCHES OF RAIN HAD FALLEN. IN ADDITION...HEAVY RAINFALL FELL IN
LOCALIZED AREAS OF FAR SOUTHWEST INYO COUNTY. PORTIONS OF THE FAR
SOUTHERN SIERRA NEVADA SAW AT LEAST A HALF AN INCH OF RAIN. THIS
COULD RESULT IN WATER ON SOME BACK COUNTRY ROADS AND TRAILS.
LOCATIONS IMPACTED INCLUDE...KEELER AND OLANCHA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.
&&
LAT...LON 3634 11800 3647 11792 3653 11768 3623 11782
3580 11783 3580 11800 3586 11802 3587 11797
3601 11802 3603 11805 3613 11808 3615 11806
3623 11811
$$
STACHELSKI309
WGUS75 KVEF 020144
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
644 PM PDT MON AUG 1 2011
CAC027-020153-
/O.EXP.KVEF.FF.W.0070.000000T0000Z-110802T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
INYO CA-
644 PM PDT MON AUG 1 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 PM PDT FOR CENTRAL AND
FAR SOUTHWESTERN INYO COUNTY...
NATIONAL WEATHER SERVICE RADAR INDICATES THAT RAIN HAS GENERALLY
ENDED OVER FAR SOUTHWESTERN INYO COUNTY AS WELL AS IN THE KEELER
AREA. THEREFORE THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE
FOR THIS AREA.
LAT...LON 3634 11800 3647 11792 3653 11768 3623 11782
3580 11783 3580 11800 3586 11802 3587 11797
3601 11802 3603 11805 3613 11808 3615 11806
3623 11811
$$
STACHELSKIThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:47 PM PDT | Flash Flood Warning | VEF | San Bernardino | 67 min |
| Aug 1, 4:45 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 45 min |
Nearby
Flash Flood Warnings in California, 2011Every flash flood warning in 2011
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.