Alert archive / California / Flash Flood Warnings in 2007
Flash Flood Warning 21, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Aug 30, 2007, 3:13 PM PDT for Riverside County, California. It took effect at Aug 30, 2007, 3:18 PM PDT. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 30, 2007, 3:13 PM PDT (22:13 UTC)
- In effect from
- Aug 30, 2007, 3:18 PM PDT
- Expired
- Aug 30, 2007, 4:15 PM PDT
- In force
- 57 min
- Issued by
- NWS San Diego, CA
- Area
- Whole counties
County Riverside County, CA
The radar
The San Diego radar (KNKX), 134 km from the middle of the area, began a volume at 22:16 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, 10.2 hours before the alert went out and 154 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
- 215 J/kg
- Mixed-layer CIN
- -775 J/kg
- Mixed-layer LCL
- 1630 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS56 KSGX 302218 FFWSGX CAC065-302315- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 313 PM PDT THU AUG 30 2007 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN RIVERSIDE COUNTY * UNTIL 415 PM PDT * AT 306 PM PDT...FLASH FLOODING WAS OCCURRING OVER THE TOWN OF AGUANGA AND ALONG HIGHWAY 371 WEST OF ANZA. * LOCATIONS IN THE WARNING INCLUDE AGUANGA. FLOODING AND DEBRIS FLOWS ARE LIKELY ALONG SECTIONS OF HIGHWAY 371 WEST OF ANZA. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. LAT...LON 3358 11701 3368 11684 3351 11669 3343 11686 TIME...MOT...LOC 2213Z 180DEG 0KT 3352 11681 $$ MOEDE
2 follow-up statements
000 WGUS76 KSGX 302236 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 332 PM PDT THU AUG 30 2007 CAC065-302315- RIVERSIDE CA- 332 PM PDT THU AUG 30 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM PDT FOR SOUTHWESTERN RIVERSIDE COUNTY... AT 324 PM PDT...A THUNDERSTORM PRODUCING FLASH FLOODING WAS REPORTED 5 MILES NORTH OF AGUANGA. THE STORM WAS WEAKENING AS IT MOVED NORTH AT 10 MPH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS....AS WELL AS SECTIONS OF HIGHWAY 371 BETWEEN AGUANGA AND ANZA. LAT...LON 3358 11701 3368 11684 3351 11669 3343 11686 TIME...MOT...LOC 2232Z 180DEG 0KT 3352 11681 $$ MOEDE
000 WGUS76 KSGX 302245 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 343 PM PDT THU AUG 30 2007 CAC065-302253- RIVERSIDE CA- 343 PM PDT THU AUG 30 2007 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN RIVERSIDE COUNTY... THE THUNDERSTORM THAT BROUGHT FLASH FLOODING TO AGUANGA AND HIGHWAY 371 IN THE SOUTHERN RIVERSIDE COUNTY MOUNTAINS HAS DECREASED IN INTENSITY. LAT...LON 3358 11701 3368 11684 3351 11669 3343 11686 TIME...MOT...LOC 2243Z 180DEG 0KT 3352 11681 $$ MOEDE
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 3:13 AM PDT | Marine Weather Statement | SGX | 6 hr | |
| Aug 30, 3:25 AM PDT | Excessive Heat Warning | SGX | Riverside, San Bernardino, San Diego | 15 hr |
| Aug 30, 4:55 AM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 14 hr |
| Aug 30, 1:16 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 57 min |
| Aug 30, 2:46 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 59 min |
| Aug 30, 3:58 PM PDT | Flash Flood Warning | SGX | San Diego | 62 min |
| Aug 30, 4:28 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 48 min |
| Aug 30, 4:40 PM PDT | Flash Flood Warning | SGX | San Bernardino | 2 hr |
Nearby
Flash Flood Warnings in California, 2007Every flash flood warning in 2007
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.