Alert archive / California / Flash Flood Warnings in 2011
Flash Flood Warning 88, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 13, 2011, 8:01 AM PDT for San Bernardino County, California. It was in force for 119 min. 4 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
- Sep 13, 2011, 8:01 AM PDT (15:01 UTC)
- Expired
- Sep 13, 2011, 10:00 AM PDT
- In force
- 119 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 182 km from the middle of the area, began a volume at 15:01 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 |
|---|---|---|---|
| Sep 13, 9:40 AM PDT | FLASH FLOOD | 10 Ese Twentynine Palms, CA | CHP REPORTED ROAD CLOSED AT HIGHWAY 62 MILE MARKER 58 DUE TO MUD AND WATER OVER THE ROAD. A BIG RIG IS STUCK IN THE MUD. |
| Sep 13, 9:40 AM PDT | FLASH FLOOD | 10 Ese Twentynine Palms, CA | CHP REPORTED ROAD CLOSED AT HIGHWAY 62 MILE MARKER 58 WITH MUD ADN WATER OVER THE ROAD. A BIG RIG IS STUCK IN THE MUD. |
| Sep 13, 9:40 AM PDT | FLASH FLOOD | 10 Ese Twentynine Palms, CA | CHP REPORTED ROAD CLOSED ON HIGHWAY 62 NEAR MILE MARKER 58 DUE TO MUD AND WATER ON THE ROADWAY. IT WAS ALSO REPORTED THAT A BIG RIG WAS STUCK IN THE MUD. |
| Sep 13, 9:40 AM PDT | FLASH FLOOD | 10 Ese Twentynine Palms, CA | CHP REPORTED THE ROAD CLOSED ON HIGHWAY 62 NEAR MILE MARKER 58 DUE TO WATER AND MUD ACROSS THE ROAD. IT WAS ALSO REPORTED THAT A BIG RIG WAS STUCK IN THE MUD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Yuma Intl Airpor, AZ (KYUM), launched 12:00Z, 3.0 hours before the alert went out and 182 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
- 555 J/kg
- Mixed-layer CIN
- -307 J/kg
- Mixed-layer LCL
- 1873 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
129
WGUS55 KVEF 131501 RRA
FFWVEF
CAC071-131700-
/O.NEW.KVEF.FF.W.0088.110913T1501Z-110913T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
801 AM PDT TUE SEP 13 2011
THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 1000 AM PDT.
* AT 753 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM COMPLEX MOVING SLOWLY TO THE
NORTH OVER SOUTHEASTERN SAN BERNARDINO COUNTY EAST OF TWENTYNINE
PALMS BETWEEN MILE MARKERS 50 AND 100 ALONG HIGHWAY 62.
* LOCATIONS IMPACTED INCLUDE...
SOUTHEASTERN SAN BERNARDINO COUNTY....INCLUDING PORTIONS OF
HIGHWAY 62 BETWEEN MILE MARKERS 50 AND 100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED ON AREA ROADWAYS...AROUND UNDERPASSES...
AND IN NORMALLY DRY WASHES AND LOW LYING AREAS. FLASH FLOODING IS
NATURES NUMBER ONE KILLER. 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 3428 11563 3427 11488 3407 11492 3407 11533
3412 11553 3407 11556 3409 11560 3403 11561
3403 11568
$$
KENNEDY2 follow-up statements
586
WGUS75 KVEF 131615
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
915 AM PDT TUE SEP 13 2011
CAC071-131700-
/O.CON.KVEF.FF.W.0088.000000T0000Z-110913T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
915 AM PDT TUE SEP 13 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 AM PDT FOR
SOUTHEASTERN SAN BERNARDINO COUNTY...
AT 907 AM PDT/907 AM MST/...NATIONAL WEATHER SERVICE DOPPLER RADAR
CONTINUED TO INDICATE A MODERATE RAIN FALLING OVER THE WARNED
AREA...AND DUE TO THE HIGH RAINFALL AMOUNTS ESTIMATED TO HAVE FALLEN
BETWEEN 730 AM PDT AND 900 AM PDT OVER THE AREA...LOW WATER
CROSSINGS ALONG HIGHWAY 62 IN SAN BERNARDINO COUNTY ARE STILL LIKELY
ADVERSELY IMPACTED.
LOCATIONS IMPACTED INCLUDE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON
AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE
RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED
ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN!
REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL
WEATHER SERVICE FACEBOOK PAGE OR TWITTER #NWSVEGAS.
&&
LAT...LON 3428 11563 3427 11488 3407 11492 3407 11533
3412 11553 3407 11556 3409 11560 3403 11561
3403 11568
$$
KENNEDY752
WGUS75 KVEF 131701
FFSVEF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LAS VEGAS NV
1001 AM PDT TUE SEP 13 2011
CAC071-131707-
/O.EXP.KVEF.FF.W.0088.000000T0000Z-110913T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
1001 AM PDT TUE SEP 13 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1000 AM PDT FOR
SOUTHEASTERN SAN BERNARDINO COUNTY...
RAINFALL RATES HAVE DECREASED SIGNIFICANTLY SINCE 900 AM PDT...ALONG
WITH THE THREAT OF FLASH FLOODING ACROSS THE WARNED AREA. THE FLASH
FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 1000 AM.
LAT...LON 3428 11563 3427 11488 3407 11492 3407 11533
3412 11553 3407 11556 3409 11560 3403 11561
3403 11568
$$
KENNEDYThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 3:36 AM PDT | Flash Flood Watch | VEF | San Bernardino | 15 hr |
| Sep 13, 5:46 AM PDT | Areal Flood Advisory | VEF | San Bernardino | 119 min |
| Sep 13, 6:31 AM PDT | Flash Flood Warning | VEF | San Bernardino | 86 min |
| Sep 13, 9:09 AM PDT | Flash Flood Warning | VEF | San Bernardino | 111 min |
| Sep 13, 9:56 AM PDT | Flash Flood Warning | VEF | San Bernardino | 83 min |
| Sep 13, 10:22 AM PDT | Flash Flood Warning | VEF | San Bernardino | 113 min |
| Sep 13, 11:09 AM PDT | Flash Flood Warning | VEF | San Bernardino | 27 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; radar from the NEXRAD Level II archive.