Alert archive / California / Flash Flood Warnings in 2011
Flash Flood Warning 5, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jul 6, 2011, 1:48 PM PDT for San Bernardino County, California. It was in force for 87 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 6, 2011, 1:48 PM PDT (20:48 UTC)
- Expired
- Jul 6, 2011, 3:15 PM PDT
- In force
- 87 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), 62 km from the middle of the area, began a volume at 20:50 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 6, 1:49 PM PDT | FLOOD | Wrightwood, CA | INTERSECTION OF HWY 18 AND SHEEP CREEK RD 1.5FT OF WATER ON ROADWAY.25 CARS ARE STRANDED ON THE SIDE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Edwards AFB, CA (KEDW), launched 12:00Z, 8.8 hours before the alert went out and 61 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
- 26 J/kg
- Mixed-layer CIN
- -273 J/kg
- Mixed-layer LCL
- 2088 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
763
WGUS56 KSGX 062048
FFWSGX
CAC071-062215-
/O.NEW.KSGX.FF.W.0005.110706T2048Z-110706T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
148 PM PDT WED JUL 6 2011
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
THIS INCLUDES THE CITY OF WRIGHTWOOD...
* UNTIL 315 PM PDT
* AT 137 PM PDT...FLASH FLOODING WAS REPORTED FROM A STORM OVER THE
WARNED AREA. THERE WAS A REPORT OF POSSIBLE CLOSURE TO HIGHWAY 138
AND A CLOSURE OF PHELAN ROAD.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PHELAN.
THIS WARNING IS IN ADDITION TO THE CURRENT FLASH FLOOD WARNING
THAT INCLUDED PHELAN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 3443 11756 3434 11754 3428 11765 3434 11766
3442 11766
$$
TARDY2 follow-up statements
919
WGUS76 KSGX 062137
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
237 PM PDT WED JUL 6 2011
CAC071-062215-
/O.CON.KSGX.FF.W.0005.000000T0000Z-110706T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
237 PM PDT WED JUL 6 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM PDT FOR
SOUTHWESTERN SAN BERNARDINO COUNTY...
AT 230 PM PDT...HEAVY RAIN IS TAPERING OFF OVER THE WARNING AREA
BUT FLASH FLOODING WILL CONTINUE ALONG HIGHWAY 138.
SPOTTERS HAVE REPORTED DEBRIS FLOW ON HIGHWAY 138 AND ITS CLOSURE.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PHELAN
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3443 11756 3440 11755 3436 11765 3434 11766
3442 11766
$$
TARDY619
WGUS76 KSGX 062215
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
315 PM PDT WED JUL 6 2011
CAC071-062221-
/O.EXP.KSGX.FF.W.0005.000000T0000Z-110706T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
315 PM PDT WED JUL 6 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 315 PM PDT FOR SOUTHWESTERN
SAN BERNARDINO COUNTY...
HEAVY RAIN HAS ENDED OVER THE PHELAN AREA AND ALONG THE SAN GABRIEL
AND SAN BERNARDINO MOUNTAINS.
THE THREAT FOR ADDITIONAL FLASH FLOODING HAS ENDED AND THE WARNING
HAS BEEN ALLOWED TO EXPIRE AT 315 PM.
EARLIER THERE WERE REPORTS OF CLOSURES ON HIGHWAY 138.
LAT...LON 3443 11756 3440 11755 3436 11765 3434 11766
3442 11766
$$
TARDYThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 5:12 PM PDT | Severe Thunderstorm Warning | SGX | San Diego | 48 min |
| Jul 6, 12:14 PM PDT | Special Weather Statement | SGX | San Diego | 61 min |
| Jul 6, 12:52 PM PDT | Flash Flood Warning | SGX | San Bernardino | 100 min |
| Jul 6, 12:55 PM PDT | Flash Flood Warning | SGX | San Diego | 50 min |
| Jul 6, 1:01 PM PDT | Flash Flood Watch | SGX | Riverside, San Bernardino, San Diego | 7 hr |
| Jul 6, 1:15 PM PDT | Severe Thunderstorm Warning | SGX | San Bernardino | 45 min |
| Jul 6, 1:31 PM PDT | Flash Flood Warning | SGX | Riverside, San Diego | 59 min |
| Jul 6, 2:48 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 42 min |
| Jul 6, 2:56 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 2 hr |
| Jul 6, 4:00 PM PDT | Areal Flood Advisory | SGX | Riverside, San Bernardino | 90 min |
| Jul 6, 4:27 PM PDT | Special Weather Statement | SGX | San Diego | 63 min |
Nearby
Flash Flood Warnings in California, 2011Every flash flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.