Alert archive / California / Flash Flood Warnings in 2007
Flash Flood Warning 13, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Dec 7, 2007, 5:58 AM PST for San Diego County, California. It was in force for 2 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
- Dec 7, 2007, 5:58 AM PST (13:58 UTC)
- Expired
- Dec 7, 2007, 8:00 AM PST
- In force
- 2 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
County San Diego County, CA
The radar
The San Diego radar (KNKX), 30 km from the middle of the area, began a volume at 13:59 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, 2.0 hours before the alert went out and 47 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
- 688 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 240 m²/s²
- 0-3 km storm-relative helicity
- 273 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 071401
FFWSGX
CAC073-071600-
/O.NEW.KSGX.FF.W.0013.071207T1358Z-071207T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
558 AM PST FRI DEC 7 2007
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WESTERN SAN DIEGO COUNTY IN SOUTHWEST CALIFORNIA...
THIS INCLUDES THE CITIES OF...RAMONA...POWAY...ESCONDIDO...EL
CAJON...
* UNTIL 800 AM PST
* AT 554 AM PST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM THUNDERSTORMS OVER THE WARNED AREA. RAINFALL
AMOUNTS OF UP TO AN INCH HAVE FALLEN SINCE EARLY THIS MORNING.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VALLEY
CENTER...SANTEE AND LAKESIDE
IN ADDITION TO FLASH FLOODING...RAINFALL IS EXPECTED TO CAUSE DEBRIS
FLOWS IN THE POOMACHA...RICE...AND WITCH FIRE BURN AREAS ACCORDING
TO THRESHOLDS PROVIDED BY THE USGS.
THE WATERSHEDS BURNED BY THE POOMACHA FIRE WILL MAKE PORTIONS OF THE
FOLLOWING ROADS SUBJECT TO FLASH FLOODING AND DEBRIS FLOWS...HIGHWAY
76 AND COUNTY ROAD S-6.
THE WATERSHEDS BURNED BY THE RICE FIRE WILL MAKE PORTIONS OF THE
FOLLOWING ROADS SUBJECT TO FLASH FLOODING AND DEBRIS FLOWS...COUNTY
ROAD S-13 AND COUNTY ROAD S-15.
THE WATERSHEDS BURNED BY THE WITCH FIRE WILL MAKE PORTIONS OF THE
FOLLOWING ROADS SUBJECT TO FLASH FLOODING AND DEBRIS FLOWS...DEL DIOS
HIGHWAY...HIGHLAND VALLEY ROAD...BLACK CANYON ROAD AND HIGHWAY 78.
DEBRIS FLOWS...INCLUDING MUD AND ROCK SLIDES...ARE EXPECTED WITH THIS
STORM. MUD SLIDES AND ROCK SLIDES CAN POTENTIALLY TRAP AND KILL
PEOPLE CAUGHT IN THEIR PATH.
ADDITIONAL RAINFALL AMOUNTS OF UP TO ONE INCH ARE POSSIBLE IN THE
WARNED AREAS THIS MORNING.
LAT...LON 3342 11693 3328 11680 3278 11687 3279 11720
3343 11723
TIME...MOT...LOC 1358Z 270DEG 0KT 3338 11705 3288 11705
$$
BALFOUR2 follow-up statements
000
WGUS76 KSGX 071521
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
712 AM PST FRI DEC 7 2007
CAC073-071600-
/O.CON.KSGX.FF.W.0013.000000T0000Z-071207T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN DIEGO CA-
712 AM PST FRI DEC 7 2007
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 800 AM PST FOR
WESTERN SAN DIEGO COUNTY...
IN THE PAST SIX HOURS BETWEEN ONE AND TWO INCHES OF RAIN HAS FALLEN
OVER THE BURNED AREAS OF POOMACHA AND RICE FIRES. SOME BRIEF HEAVY
SHOWERS WILL PASS OVER THESE AREAS BETWEEN NOW AND 800 AM WITH
ANOTHER QUARTER OF AN INCH RAIN POSSIBLE.
OVER THE BURNED AREAS OF THE WITCH FIRE...SINCE 600 AM BETWEEN A
QUARTER TO HALF INCH OF RAIN HAS FALLEN. DOPPLER RADAR INDICATES THE
COLD FRONT IS STILL OVER THIS AREA AND ANOTHER HALF TO THREE FOURTHS
OF AN INCH RAIN IS POSSIBLE BETWEEN NOW AND 800 AM.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VALLEY
CENTER...RAMONA AND POWAY
DEBRIS FLOWS...INCLUDING MUD AND ROCK SLIDES...ARE EXPECTED WITH THIS
STORM. MUD SLIDES AND ROCK SLIDES CAN POTENTIALLY TRAP AND KILL
PEOPLE CAUGHT IN THEIR PATH.
TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN SAN
DIEGO.
LAT...LON 3342 11693 3328 11680 3278 11687 3279 11720
3343 11723
TIME...MOT...LOC 1512Z 180DEG 0KT 3338 11705 3288 11705
$$
BALFOUR000
WGUS76 KSGX 071556
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
753 AM PST FRI DEC 7 2007
CAC073-071603-
/O.EXP.KSGX.FF.W.0013.000000T0000Z-071207T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN DIEGO CA-
753 AM PST FRI DEC 7 2007
...THE FLASH FLOOD WARNING WILL EXPIRE AT 800 AM PST FOR WESTERN SAN
DIEGO COUNTY...
DOPPLER RADAR INDICATES THE COLD FRONT HAS MOVED SOUTH AND EAST OF
THE BURNED AREAS OF THE RICE...POOMACHA...AND WITCH FIRES.
ADDITIONAL RAINFALL IS EXPECTED FROM SHOWERS THIS MORNING...BUT
RAINFALL REATES SHOULD BE BELOW THE THRESHOLD FOR FLASH FLOODING.
LAT...LON 3342 11693 3328 11680 3278 11687 3279 11720
3343 11723
TIME...MOT...LOC 1553Z 180DEG 0KT 3338 11705 3288 11705
$$
BALFOURThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 7, 5:00 AM PST | 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.