Alert archive / California / Flash Flood Warnings in 2022
Flash Flood Warning 13, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Aug 8, 2022, 4:31 PM PDT for San Diego County, California. It was in force for 3 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 8, 2022, 4:31 PM PDT (23:31 UTC)
- Expired
- Aug 8, 2022, 7:30 PM PDT
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Flood severity
- None
County San Diego County, CA
The radar
The San Diego radar (KNKX), 66 km from the middle of the area, began a volume at 23:35 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 |
|---|---|---|---|
| Aug 8, 4:48 PM PDT | HEAVY RAIN 0.62 | Pine Valley, CA |
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, 11.5 hours before the alert went out and 78 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
- 2261 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
764
WGUS56 KSGX 082331
FFWSGX
CAC073-090230-
/O.NEW.KSGX.FF.W.0013.220808T2331Z-220809T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service San Diego CA
431 PM PDT Mon Aug 8 2022
The National Weather Service in San Diego has issued a
* Flash Flood Warning for...
Southeastern San Diego County in southwestern California...
* Until 730 PM PDT.
* At 431 PM PDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms
producing flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
I-8 Between Pine Valley And Boulevard, I-8 Between Boulevard And
Imperial County Line, Cuyamaca Rancho State Park, Pine Valley,
Boulevard, Lake Morena, Campo, Hwy S2 Between Agua Caliente And
Canebrake, Hwy S2 Between Canebrake And Imperial County Line, Hwy
S2 Between Shelter Valley And Agua Caliente, Hwy S1 Between Lake
Cuyamaca And Mount Laguna, Hwy S2, Potrero, Descanso, Manzanita
Indian Reservation, La Posta Indian Reservation and Live Oak
Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3259 11652 3291 11668 3301 11625 3269 11611
3262 11611
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SS2 follow-up statements
971
WGUS76 KSGX 090148
FFSSGX
Flash Flood Statement
National Weather Service San Diego CA
648 PM PDT Mon Aug 8 2022
CAC073-090230-
/O.CON.KSGX.FF.W.0013.000000T0000Z-220809T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Diego CA-
648 PM PDT Mon Aug 8 2022
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM PDT THIS
EVENING FOR SOUTHEASTERN SAN DIEGO COUNTY...
At 648 PM PDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
Some locations that will experience flash flooding include...
I-8 Between Pine Valley And Boulevard, Mount Laguna, I-8 Between
Boulevard And Imperial County Line, Cuyamaca Rancho State Park,
Hwy S2 Between Canebrake And Imperial County Line, Hwy S2 Between
Agua Caliente And Canebrake, Boulevard, Hwy S2 Vallecito Creek Rd,
Pine Valley, Hwy S2 Between Shelter Valley And Agua Caliente, Fish
Creek Wash, Hwy S1 Between Lake Cuyamaca And Mount Laguna,
Manzanita Indian Reservation, La Posta Indian Reservation, Live
Oak Springs, Canebrake, Campo Indian Reservation, Agua Caliente,
Tierra Del Sol and Jacumba.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3261 11633 3292 11652 3301 11625 3269 11611
3262 11611
FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
$$
SS910
WGUS76 KSGX 090224
FFSSGX
Flash Flood Statement
National Weather Service San Diego CA
724 PM PDT Mon Aug 8 2022
CAC073-090234-
/O.EXP.KSGX.FF.W.0013.000000T0000Z-220809T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
San Diego CA-
724 PM PDT Mon Aug 8 2022
...FLASH FLOOD WARNING WILL EXPIRE AT 730 PM PDT THIS EVENING FOR
SOUTHEASTERN SAN DIEGO COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3261 11633 3292 11652 3301 11625 3269 11611
3262 11611
$$
SSThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 1:33 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 4 hr |
| Aug 8, 2:18 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 102 min |
| Aug 8, 2:41 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 2 hr |
| Aug 8, 3:44 PM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Aug 8, 3:59 PM PDT | Areal Flood Advisory | SGX | San Diego | 3 hr |
| Aug 8, 4:09 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 2 hr |
| Aug 8, 4:36 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2022Every flash flood warning in 2022
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.