Alert archive / California / Flash Flood Warnings in 2010
Flash Flood Warning 13, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Aug 16, 2010, 2:37 PM PDT for Riverside County, San Diego County, California. It was in force for 66 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 16, 2010, 2:37 PM PDT (21:37 UTC)
- Expired
- Aug 16, 2010, 3:43 PM PDT
- In force
- 66 min
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Riverside County, CA, San Diego County, CA
The radar
The San Diego radar (KNKX), 49 km from the middle of the area, began a volume at 21:39 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, 9.6 hours before the alert went out and 68 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
- 2170 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- -29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
224 WGUS56 KSGX 162137 FFWSGX CAC065-073-162300- /O.NEW.KSGX.FF.W.0013.100816T2137Z-100816T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 237 PM PDT MON AUG 16 2010 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME SOUTHWESTERN RIVERSIDE COUNTY IN SOUTHWEST CALIFORNIA... NORTH CENTRAL SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA... * UNTIL 400 PM PDT * AT 230 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAINS WHICH WOULD LIKELY PRODUCE FLASH FLOODING OVER THE WARNED AREA. THUNDERSTORMS WERE NEARLY STATIONARY OVER PALOMAR MOUNTAIN...MESA GRANDE AND 5 MILES EAST OF AGUANGA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OAK GROVE AND AGUANGA. LAT...LON 3310 11670 3336 11697 3346 11694 3349 11664 $$ MAXWELL
2 follow-up statements
254 WGUS76 KSGX 162200 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 300 PM PDT MON AUG 16 2010 CAC065-073-162300- /O.CON.KSGX.FF.W.0013.000000T0000Z-100816T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO CA-RIVERSIDE CA- 300 PM PDT MON AUG 16 2010 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM PDT FOR EXTREME SOUTHWESTERN RIVERSIDE AND NORTH CENTRAL SAN DIEGO COUNTIES... AT 254 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS WITH HEAVY RAIN OVER FAR NORTHERN SAN DIEGO COUNTY AND SOUTHERN RIVERSIDE COUNTY NEAR AND NORTHEAST OF PALOMAR MOUNTAIN. THUNDERSTORMS WERE NEARLY STATIONARY. RAINFALL RATES OF LOCALLY MORE THAN ONE INCH PER HOUR WILL BE POSSIBLE...AND THIS COULD PRODUCE FLASH FLOODING. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OAK GROVE AND AGUANGA. HIGHWAY 79 NEAR OAK GROVE WILL BE AT RISK OF FLOODING IN LOW-LYING AREAS THROUGH 400 PM. LAT...LON 3310 11670 3336 11697 3346 11694 3349 11664 $$ MAXWELL
804 WGUS76 KSGX 162243 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 343 PM PDT MON AUG 16 2010 CAC065-073-162252- /O.CAN.KSGX.FF.W.0013.000000T0000Z-100816T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN DIEGO CA-RIVERSIDE CA- 343 PM PDT MON AUG 16 2010 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME SOUTHWESTERN RIVERSIDE AND NORTH CENTRAL SAN DIEGO COUNTIES... THUNDERSTORMS HAVE WEAKENED AND FLASH FLOODING IS NO LONGER A THREAT. LAT...LON 3310 11670 3336 11697 3346 11694 3349 11664 $$ TS
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 2:55 PM PDT | Special Weather Statement | SGX | 50 min | |
| Aug 16, 2:58 PM PDT | Special Weather Statement | SGX | 47 min | |
| Aug 16, 4:01 PM PDT | Special Weather Statement | SGX | 59 min | |
| Aug 16, 4:37 PM PDT | Special Weather Statement | SGX | San Diego | 53 min |
| Aug 16, 4:55 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 35 min |
Nearby
Flash Flood Warnings in California, 2010Every flash flood warning in 2010
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.