Alert archive / California / Flash Flood Warnings in 2008
Flash Flood Warning 49, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Aug 30, 2008, 2:53 PM PDT for San Bernardino County, California. It was in force for 86 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
- Aug 30, 2008, 2:53 PM PDT (21:53 UTC)
- Expired
- Aug 30, 2008, 4:19 PM PDT
- In force
- 86 min
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
County San Bernardino County, CA
The radar
The Santa Ana Mts radar (KSOX), 86 km from the middle of the area, began a volume at 22:04 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, 9.9 hours before the alert went out and 168 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1329 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 57 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 302153 FFWSGX CAC071-310045- /O.NEW.KSGX.FF.W.0049.080830T2153Z-080831T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 253 PM PDT SAT AUG 30 2008 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA... * UNTIL 545 PM PDT * AT 245 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. RADAR INDICATES RAINFALL RATES OF ONE TO TWO INCHES PER HOUR MAY BE EXPECTED WITH THE HEAVIER STORMS...ALONG WITH SMALL HAIL. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BIG BEAR LAKE...BIG BEAR CITY...ONYX PEAK DEBRIS FLOWS ISSUING FROM BASINS BURNED BY THE SLIDE FIRE CAN IMPACT HIGHWAYS 330 AND 18...AND ANY OTHER ROADS WITHIN THE BURNED AREA... PARTICULARLY WHERE THEY CROSS BURNED DRAINAGES. LAT...LON 3439 11702 3438 11677 3415 11668 3413 11699 $$ PURPURA
1 follow-up statement
000 WGUS76 KSGX 302319 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 419 PM PDT SAT AUG 30 2008 CAC071-302328- /O.CAN.KSGX.FF.W.0049.000000T0000Z-080831T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 419 PM PDT SAT AUG 30 2008 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL SAN BERNARDINO COUNTY... THE FLASH FLOOD WARNING THAT INCLUDED THE HIGH DESERT AREAS OF APPLE AND LUCERNE VALLEYS IN SAN BERNARDINO COUNTY HAS BENN CALCELLED. THE STORMS HAVE ENDED AND FLASH FLOODING IS NO LONGER A THREAT. LAT...LON 3439 11702 3438 11677 3415 11668 3413 11699 $$ PURPURA
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 8:50 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 21 hr |
| Aug 30, 7:49 AM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Aug 30, 1:33 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 3 hr |
| Aug 30, 2:09 PM PDT | Flash Flood Warning | SGX | San Bernardino | 2 hr |
| Aug 30, 2:38 PM PDT | Flash Flood Warning | SGX | Riverside | 96 min |
Nearby
Flash Flood Warnings in California, 2008Every flash flood warning in 2008
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.