Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 4, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jul 14, 2012, 3:43 PM PDT for Riverside County, California. It was in force for 80 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 14, 2012, 3:43 PM PDT (22:43 UTC)
- Expired
- Jul 14, 2012, 5:03 PM PDT
- In force
- 80 min
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Riverside County, CA
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 10.7 hours before the alert went out and 107 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
- 1159 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
446
WGUS56 KSGX 142243
FFWSGX
CAC065-150045-
/O.NEW.KSGX.FF.W.0004.120714T2243Z-120715T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
343 PM PDT SAT JUL 14 2012
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 545 PM PDT
* AT 400 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A STORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SANTA ROSA
MOUNTAIN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3355 11647 3355 11633 3346 11632 3344 11644
3347 11650
$$
PALMER/JJT2 follow-up statements
265
WGUS76 KSGX 142319
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
419 PM PDT SAT JUL 14 2012
CAC065-150045-
/O.CON.KSGX.FF.W.0004.000000T0000Z-120715T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIVERSIDE CA-
419 PM PDT SAT JUL 14 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM PDT FOR SOUTH
CENTRAL RIVERSIDE COUNTY...
AT 413 PM PDT...ALTHOUGH THE STORM HAS WEAKENED...MODERATE TO HEAVY
RAIN IS STILL POSSIBLE IN THE AREA. THE CLOSEST OBSERVATION FROM THE
STORM AT TORO PEAK REPORTED 0.58 INCHES OF RAIN IN AN HOUR.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SANTA ROSA
MOUNTAIN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3355 11647 3355 11633 3346 11632 3344 11644
3347 11650
$$
JJT/PALMER706
WGUS76 KSGX 150003
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
503 PM PDT SAT JUL 14 2012
CAC065-150012-
/O.CAN.KSGX.FF.W.0004.000000T0000Z-120715T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIVERSIDE CA-
503 PM PDT SAT JUL 14 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL
RIVERSIDE COUNTY...
THUNDERSTORMS IN THE AREA HAVE DISSIPATED AND A FLASH FLOOD WARNING
IS NO LONGER NEEDED. THEREFORE...THE WARNING IS CANCELED.
LAT...LON 3355 11647 3355 11633 3346 11632 3344 11644
3347 11650
$$
JJT/PALMERThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 9:43 AM PDT | Flash Flood Watch | SGX | Riverside, San Diego | 9 hr |
| Jul 14, 3:04 PM PDT | Special Weather Statement | SGX | Riverside | 41 min |
| Jul 14, 3:26 PM PDT | Special Weather Statement | SGX | Riverside | 19 min |
| Jul 14, 4:56 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 34 min |
Nearby
Flash 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.