Alert archive / California / Flash Flood Warnings in 2011
Flash Flood Warning 2, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 7, 2011, 2:49 PM PDT for Riverside County, San Bernardino County, California. It was in force for 116 min. 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
- Jul 7, 2011, 2:49 PM PDT (21:49 UTC)
- Expired
- Jul 7, 2011, 4:45 PM PDT
- In force
- 116 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
The radar
The Santa Ana Mts radar (KSOX), 144 km from the middle of the area, began a volume at 21:49 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 |
|---|---|---|---|
| Jul 7, 3:30 PM PDT | FLOOD | 5 S Twentynine Palms, CA | FLASH FLOODING IS OCCURRING AT PINTO WYE AND NEAR 49 PALM OASIS IN JOSHUA TREE NATIONAL PARK, CA. NORTH ENTRANCE TO THE PARK IS CLOSED DUE TO THE FLASH FLOODING. THE WEST AND SOUTH ENTRANCES REMAIN OPEN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 9.8 hours before the alert went out and 171 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1301 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
090
WGUS55 KPSR 072149
FFWPSR
CAC065-071-072345-
/O.NEW.KPSR.FF.W.0002.110707T2149Z-110707T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
249 PM PDT THU JUL 7 2011
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTH CENTRAL RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA...
SOUTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 445 PM PDT
* AT 245 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHERN PORTIONS OF
JOSHUA TREE NATIONAL PARK. MOVEMENT OF THE STORMS WAS SLOWLY NORTH.
* RADAR ESTIMATES THAT UP TO 1.5 INCHES OF RAIN HAS FALLEN NEAR THE
NORTH ENTRANCE OF THE PARK SINCE 130 PM. AN ADDITIONAL INCH OF
RAIN CAN BE EXPECTED FROM THE STRONGEST STORMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT PEOPLE ALONG THE BANKS OF WASHES AND
CREEKS SHOULD MOVE TO HIGHER GROUND IMMEDIATELY. NORMALLY DRY WASHES
AND STREAMS WILL SUDDENLY HAVE RUNNING WATER AND MAKE UNBRIDGED
CROSSINGS IMPASSABLE. STREETS...UNDERPASSES...AND LOW SPOTS WILL
BECOME INUNDATED MAKING DRIVING HAZARDOUS IN THE WARNED AREA.
CAMPERS...HIKERS...AND OFF ROAD VEHICLES SHOULD AVOID WASHES AND
STREAMS. SEEK HIGHER GROUND IMMEDIATELY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATER OR WATER OF UNKNOWN DEPTH.
&&
LAT...LON 3408 11628 3408 11626 3410 11626 3412 11624
3412 11606 3405 11602 3404 11600 3403 11567
3404 11558 3381 11584 3391 11619 3392 11620
3396 11639
$$
WOODALL2 follow-up statements
265
WGUS75 KPSR 072228
FFSPSR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
328 PM PDT THU JUL 7 2011
CAC065-071-072345-
/O.CON.KPSR.FF.W.0002.000000T0000Z-110707T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIVERSIDE CA-SAN BERNARDINO CA-
328 PM PDT THU JUL 7 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR SOUTH
CENTRAL SAN BERNARDINO AND NORTH CENTRAL RIVERSIDE COUNTIES...
AT 322 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER JOSHUA TREE
NATIONAL PARK. THE HEAVIEST RAIN WAS OVER CENTRAL AND EASTERN
PORTIONS OF THE PARK. MOVEMENT OF THE STORMS WAS SLOWLY NORTH.
RADAR INDICATES THAT UP TO 1.75 INCHES OF RAIN HAS FALLEN SINCE
2 PM. AN ADDITIONAL 1/2 TO 1 INCH IS POSSIBLE FROM THE STRONGER
STORMS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
PINTO WASH...DOG WASH...QUAIL WASH...SAN BERNARDINO WASH...FRIED
LIVER WASH...PORCUPINE WASH...SMOKE TREE WASH AND WASHINGTON WASH.
FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.
&&
LAT...LON 3408 11628 3408 11626 3410 11626 3412 11624
3412 11606 3405 11602 3404 11600 3403 11567
3404 11558 3381 11584 3391 11619 3392 11620
3396 11639
$$
WOODALL814
WGUS75 KPSR 072319
FFSPSR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
419 PM PDT THU JUL 7 2011
CAC065-071-072345-
/O.CON.KPSR.FF.W.0002.000000T0000Z-110707T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIVERSIDE CA-SAN BERNARDINO CA-
419 PM PDT THU JUL 7 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 PM PDT FOR SOUTH
CENTRAL SAN BERNARDINO AND NORTH CENTRAL RIVERSIDE COUNTIES...
AT 415 PM PDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
LIGHT TO MODERATE RAIN NEAR THE NORTHEASTERN AND SOUTHWESTERN
PORTIONS OF JOSHUA TREE NATIONAL PARK. ALTHOUGH THE HEAVY RAIN HAS
DIMINISHED...THE POTENTIAL FOR RUNOFF AND FLOODING WILL CONTINUE.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LOST
HORSE-KEYS VIEW JTNP
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
PINTO WASH...DOG WASH...QUAIL WASH...SAN BERNARDINO WASH...FRIED
LIVER WASH...PORCUPINE WASH...SMOKE TREE WASH AND WASHINGTON WASH.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. TURN AROUND...DONT DROWN.
&&
LAT...LON 3408 11628 3408 11626 3410 11626 3412 11624
3412 11606 3405 11602 3404 11600 3403 11567
3404 11558 3381 11584 3391 11619 3392 11620
3396 11639
$$
WOODALLThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 4:46 PM PDT | Special Weather Statement | PSR | Imperial | 44 min |
| Jul 7, 4:55 PM PDT | Severe Thunderstorm Warning | PSR | Imperial | 50 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.