Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 5, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jan 6, 2016, 12:10 PM PST for Orange County, California. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jan 6, 2016, 12:10 PM PST (20:10 UTC)
- Expired
- Jan 6, 2016, 5:15 PM PST
- In force
- 5 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
County Orange County, CA
The radar
The Santa Ana Mts radar (KSOX), 8 km from the middle of the area, began a volume at 20:13 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
San Diego, CA (KNKX), launched 12:00Z, 8.2 hours before the alert went out and 112 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
- 17 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 791 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
431
WGUS56 KSGX 062010
FFWSGX
CAC059-070115-
/O.NEW.KSGX.FF.W.0005.160106T2010Z-160107T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
1210 PM PST WED JAN 6 2016
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHEASTERN ORANGE COUNTY IN SOUTHWESTERN CALIFORNIA...
* UNTIL 515 PM PST
* AT 1210 PM PST...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS THE
SILVERADO CANYON AREA. FLASH FLOODING WILL LIKELY BEGIN SHORTLY.
IN ADDITION...EXCESSIVE RAINFALL WILL LIKELY RESULT IN DEBRIS
FLOWS WITHIN AND DOWNSTREAM OF THE 2014 SILVERADO FIRE BURN SCAR.
THE DEBRIS FLOW CAN CONSIST OF ROCK...MUD...VEGETATION AND OTHER
LOOSE MATERIALS. SILVERADO CANYON...INCLUDING HOMES AND BUSINESSES
IN AND AROUND SILVERADO CANYON ROAD...WILL LIKELY BE IMPACTED.
THIS IS A DANGEROUS SITUATION FOR SILVERADO CANYON RESIDENTS...AND
IMMEDIATE MEASURES SHOULD BE TAKEN TO PROTECT LIFE AND PROPERTY.
* SOME LOCATIONS THAT WILL LIKELY EXPERIENCE FLOODING INCLUDE...
EASTERN SILVERADO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.
&&
LAT...LON 3376 11756 3372 11757 3373 11762 3375 11764
3377 11761 3377 11759
$$
HARRISON1 follow-up statement
653
WGUS76 KSGX 070124
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
524 PM PST WED JAN 6 2016
CAC059-070125-
/O.EXP.KSGX.FF.W.0005.000000T0000Z-160107T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ORANGE CA-
524 PM PST WED JAN 6 2016
...THE FLASH FLOOD WARNING FOR NORTHEASTERN ORANGE COUNTY HAS
EXPIRED...
THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES.
DEBRIS FLOWS WITH UP TO 2 FEET OF MUD WERE REPORTED AT THE UPPER END
OF SILVERADO CANYON.
HOWEVER...ADDITIONAL HEAVY RAIN IS EXPECTED TO DEVELOP BETWEEN 6 AND
8 PM THIS EVENING AN ANOTHER FLASH FLOOD WARNING MAY BE NEEDED.
LAT...LON 3376 11756 3372 11757 3373 11762 3375 11764
3377 11761 3377 11759
$$
TARDYThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 4:11 PM PST | Flash Flood Warning | SGX | San Diego | 3 hr |
| Jan 5, 6:46 PM PST | Areal Flood Advisory | SGX | Riverside, San Diego | 4 hr |
| Jan 5, 8:28 PM PST | River Flood Warning | SGX | San Diego | 9 hr |
| Jan 6, 4:05 AM PST | Wind Advisory | SGX | Orange, San Diego | 14 hr |
| Jan 6, 4:28 AM PST | Flash Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 32 hr |
| Jan 6, 10:36 AM PST | Beach Hazards Statement | SGX | Orange, San Diego | 15 hr |
| Jan 6, 10:36 AM PST | High Surf Warning | SGX | Orange, San Diego | 59 hr |
| Jan 6, 12:00 PM PST | River Flood Warning | SGX | San Diego | 29 hr |
| Jan 6, 12:35 PM PST | Special Marine Warning | SGX | 55 min | |
| Jan 6, 12:40 PM PST | Areal Flood Warning | SGX | Orange, Riverside, San Bernardino | 6 hr |
| Jan 6, 12:45 PM PST | Special Marine Warning | SGX | 45 min | |
| Jan 6, 12:46 PM PST | Severe Thunderstorm Warning | SGX | Orange, Riverside, San Bernardino | 44 min |
| Jan 6, 1:04 PM PST | Severe Thunderstorm Warning | SGX | Orange, Riverside, San Diego | 56 min |
| Jan 6, 1:23 PM PST | Special Marine Warning | SGX | 37 min | |
| Jan 6, 1:30 PM PST | Special Marine Warning | SGX | 45 min | |
| Jan 6, 1:34 PM PST | Flash Flood Warning | SGX | Orange, Riverside, San Bernardino, San Diego | 3 hr |
| Jan 6, 1:50 PM PST | Special Marine Warning | SGX | 40 min | |
| Jan 6, 2:09 PM PST | Special Marine Warning | SGX | 96 min | |
| Jan 6, 2:23 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 52 min |
| Jan 6, 2:45 PM PST | Special Marine Warning | SGX | 60 min | |
| Jan 6, 2:54 PM PST | Tornado Warning | SGX | San Diego | 20 min |
| Jan 6, 2:56 PM PST | Tornado Warning | SGX | San Diego | 19 min |
| Jan 6, 3:12 PM PST | Flash Flood Warning | SGX | San Diego | 3 hr |
| Jan 6, 3:19 PM PST | Severe Thunderstorm Warning | SGX | San Diego | 43 min |
| Jan 6, 3:50 PM PST | Special Marine Warning | SGX | 85 min |
Nearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
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.