Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 30, NWS Phoenix, AZ
NWS Phoenix, AZ issued this flash flood warning at Jul 31, 2012, 1:31 PM PDT for San Bernardino County, California; La Paz County, Yuma County, Arizona. It was in force for 119 min. 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 31, 2012, 1:31 PM PDT (20:31 UTC)
- Expired
- Jul 31, 2012, 3:30 PM PDT
- In force
- 119 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties La Paz County, AZ, Yuma County, AZ, San Bernardino County, CA
The radar
The Yuma radar (KYUX), 161 km from the middle of the area, began a volume at 20:32 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.
The nearest sounding before it
Phoenix, AZ (KPSR), launched 12:00Z, 8.5 hours before the alert went out and 221 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
- 808 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 1373 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
325
WGUS55 KPSR 312031
FFWPSR
AZC012-027-CAC071-312230-
/O.NEW.KPSR.FF.W.0030.120731T2031Z-120731T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
131 PM MST TUE JUL 31 2012
THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
THIS INCLUDES PARKER DAM...EARP...BIG RIVER...
NORTH CENTRAL YUMA COUNTY IN SOUTHWEST ARIZONA...
CENTRAL LA PAZ COUNTY IN WEST CENTRAL ARIZONA...
THIS INCLUDES PARKER...
* UNTIL 330 PM MST/330 PM PDT/
* AT 118 PM MST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
SCATTERED SHOWERS AND THUNDERSTORMS CONTINUING TO MOVE ACROSS
PORTIONS OF THE WARNED AREA PRODUCING VERY HEAVY RAINFALL. BETWEEN
TWO AND THREE INCHES HAVE FALLEN BETWEEN 11 AM AND 1 PM IN SOME
LOCATIONS. THIS IS A SIGNIFICANT EVENT...WITH RAINFALL
TOTALS APPROACHING THE 100 YEAR AVERAGE RECURRENCE INTERVAL EVENT.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUCKSKIN
MOUNTAIN PARK...PARKER DAM AND BOUSE
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.
MOST FLOOD DEATHS OCCUR IN MOTORIZED VEHICLES. WHEN ENCOUNTERING
FLOODED ROADS...MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
TO REPORT FLOODING...PLEASE RELAY YOUR REPORT TO LOCAL LAW
ENFORCEMENT WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 3424 11383 3335 11388 3328 11426 3352 11457
3355 11453 3368 11453 3370 11450 3386 11453
3387 11450 3394 11453 3403 11443 3410 11442
3417 11425 3429 11413 3430 11415 3431 11411
$$
MCLANE1 follow-up statement
278
WGUS75 KPSR 312205
FFSPSR
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PHOENIX AZ
305 PM MST TUE JUL 31 2012
CAC071-312214-
/O.CAN.KPSR.FF.W.0030.000000T0000Z-120731T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
305 PM PDT TUE JUL 31 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME
SOUTHEASTERN SAN BERNARDINO COUNTY...
LAT...LON 3424 11402 3422 11383 3335 11388 3328 11426
3352 11457 3355 11453 3372 11450 3386 11453
3387 11450 3394 11453 3403 11443 3409 11441
3416 11424 3426 11411 3429 11412
$$
AZC012-027-312230-
/O.CON.KPSR.FF.W.0030.000000T0000Z-120731T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LA PAZ AZ-YUMA AZ-
305 PM MST TUE JUL 31 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST/330 PM
PDT/ FOR NORTH CENTRAL YUMA AND CENTRAL LA PAZ COUNTIES...
AT 257 PM MST...SHOWER AND THUDERSTORM ACTIVITY HAS DIMINSHED ALONG
WITH THE THRERAT OF CONTINUED HEAVY RAINFALL. HOWEVER...RUNOFF WILL
CONTINUE TO FLOW IN TO AREA WASHES AND STREAMS FOR THE NEXT COUPLE
OF HOURS...WITH HEIGHTENED FLOW IN THE OSBORNE WASH AND BOUSE WASH.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUCKSKIN
MOUNTAIN PARK...PARKER DAM...PARKER AND BOUSE
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.
MOST FLOOD DEATHS OCCUR IN MOTORIZED VEHICLES. WHEN ENCOUNTERING
FLOODED ROADS...MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
TO REPORT FLOODING...PLEASE RELAY YOUR REPORT TO LOCAL LAW
ENFORCEMENT WHEN YOU CAN DO SO SAFELY.
&&
LAT...LON 3424 11402 3422 11383 3335 11388 3328 11426
3352 11457 3355 11453 3372 11450 3386 11453
3387 11450 3394 11453 3403 11443 3409 11441
3416 11424 3426 11411 3429 11412
$$
MEYERSThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 6:15 PM PDT | Areal Flood Advisory | PSR | Imperial | 2 hr |
| Jul 30, 7:31 PM PDT | Areal Flood Warning | PSR | Imperial | 15 hr |
| Jul 31, 3:42 AM PDT | Flash Flood Watch | PSR | 15 hr | |
| Jul 31, 4:49 AM PDT | Areal Flood Advisory | PSR | Imperial | 116 min |
| Jul 31, 4:58 AM PDT | Flash Flood Warning | PSR | Imperial | 3 hr |
| Jul 31, 9:02 AM PDT | Areal Flood Advisory | PSR | Riverside, San Bernardino | 3 hr |
| Jul 31, 10:16 AM PDT | Flash Flood Warning | PSR | Imperial, Riverside, San Bernardino | 3 hr |
| Jul 31, 12:12 PM PDT | Severe Thunderstorm Warning | PSR | Riverside, San Bernardino | 49 min |
| Jul 31, 1:28 PM PDT | Areal Flood Advisory | PSR | Imperial, Riverside | 3 hr |
| Jul 31, 3:40 PM PDT | Areal Flood Advisory | PSR | Riverside, San Bernardino | 2 hr |
| Jul 30, 5:12 PM PDT | Areal Flood Advisory | PSR | La Paz | 2 hr |
| Jul 30, 11:26 PM PDT | Special Weather Statement | PSR | Gila | 79 min |
| Jul 31, 12:31 AM PDT | Special Weather Statement | PSR | Gila | 59 min |
| Jul 31, 1:15 AM PDT | Special Weather Statement | PSR | 45 min | |
| Jul 31, 10:47 AM PDT | Areal Flood Advisory | PSR | La Paz, Yuma | 52 min |
| Jul 31, 11:06 AM PDT | Special Weather Statement | PSR | La Paz | 39 min |
| Jul 31, 11:37 AM PDT | Flash Flood Warning | PSR | La Paz, Yuma | 113 min |
| Jul 31, 12:05 PM PDT | Special Weather Statement | PSR | La Paz | 40 min |
| Jul 31, 4:10 PM PDT | Blowing Dust Advisory | PSR | 19 min | |
| Jul 31, 4:29 PM PDT | Dust Storm Warning | PSR | 82 min | |
| Jul 31, 4:48 PM PDT | Severe Thunderstorm Warning | PSR | Maricopa | 27 min |
Nearby
Flash Flood Warnings in Arizona, 2012Flash Flood Warnings in California, 2012Every flash flood warning in 2012
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; radar from the NEXRAD Level II archive.