Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 1, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jul 13, 2012, 5:23 AM PDT for San Bernardino County, California. It was in force for 116 min. 6 reports 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 13, 2012, 5:23 AM PDT (12:23 UTC)
- Expired
- Jul 13, 2012, 7:19 AM PDT
- In force
- 116 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), 87 km from the middle of the area, began a volume at 12:25 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 13, 5:28 AM PDT | HEAVY RAIN 1.5 | N Big Bear City, CA | STEADY RAIN SINCE 0100 PDT OCCASIONAL EXTREMELY HEAVY RAINFALL RATES ALONG WITH HAIL. FREQUENT LIGHTNING BETWEEN 0315-0528 PDT. STREET FLOODING OVERHEARD ON RADIO SCANNER. |
| Jul 13, 5:34 AM PDT | HEAVY RAIN 1.33 | 2 N Big Bear Lake, CA | FAWNSKIN RAWS REPORTING RAIN SINCE 0134 PDT. 0.74 INCHES BETWEEN 0434 AND 0534 PDT. |
| Jul 13, 6:00 AM PDT | HEAVY RAIN 1.73 | 4 Nne San Gorgonio Moun, CA | HEART BAR ALERT GAGE HOUR RAINFALL TOTAL |
| Jul 13, 6:00 AM PDT | HEAVY RAIN 2.19 | 3 Ene Big Bear City, CA | BALDWIN LAKE ALERT GAGE - 4 HOUR RAINFALL TOTAL SINCE 0200 PDT. 2 HOUR RAINFALL TOTAL BETWEEN 0400-0600 PDT WAS 1.55 INCHES. 1 HOUR RAINFALL TOTAL BETWEEN 0500-0600 WAS 0.92 INCHES. |
| Jul 13, 6:17 AM PDT | HEAVY RAIN 1.3 | 2 Ene Big Bear Lake, CA | CW8934 BIG BEAR LAKE REPORTING RAIN SINCE 0137 PDT. BETWEEN 0408 PDT AND 0556 PDT 0.70 INCHES FELL. |
| Jul 13, 6:17 AM PDT | HEAVY RAIN 1.88 | Big Bear City, CA | BIG BEAR CITY AIRPORT - RAINING SINCE 0055 PDT. BETWEEN 0315-0355 PDT 0.70 INCHES REPORTED. ALSO BETWEEN 0455-0555 PDT 0.64 INCHES REPORTED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 0.4 hours before the alert went out and 159 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
- 1005 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
472
WGUS56 KSGX 131223
FFWSGX
CAC071-131430-
/O.NEW.KSGX.FF.W.0001.120713T1223Z-120713T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
523 AM PDT FRI JUL 13 2012
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 730 AM PDT
* AT 514 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A STORM 7 MILES SOUTHEAST OF BIG BEAR CITY...OR
21 MILES NORTHEAST OF YUCAIPA...MOVING NORTHWEST AT 15 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BIG
BEAR LAKE AND FOREST FALLS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3407 11689 3411 11707 3429 11698 3435 11685
3431 11651 3422 11651 3407 11668
$$
PALMER2 follow-up statements
073
WGUS76 KSGX 131353
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
653 AM PDT FRI JUL 13 2012
CAC071-131430-
/O.CON.KSGX.FF.W.0001.000000T0000Z-120713T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
653 AM PDT FRI JUL 13 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 AM PDT FOR SOUTH
CENTRAL SAN BERNARDINO COUNTY...
AT 640 AM PDT...DOPPLER RADAR AND SATELLITE IMAGERY SHOWED THE HEAVY
RAINSHOWERS AND THUNDERSTORMS HAD MOVED NORTHEAST OF THE MOUNTAINS
AND WERE OVER THE MOJAVE DESERT.
HEAVY RAINFALL ...WITH AMOUNTS AVERAGING BETWEEN ONE AND TWO INCHES
WAS OBSERVED BETWEEN 4 AM AND 6 AM OVER THE SAN BERNARDINO
MOUNTAINS...AND FLASH FLOODING AND MUD AND ROCK SLIDES WERE REPORTED
ALONG HIGHWAY 18 AND IN THE AND AROUND THE BIG BEAR LAKE AREA.
CREEKS AND NORMALLY DRY WASHES WILL CONTINUE TO RUN FULL UNTIL 730
AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF A QUARTER INCH ARE POSSIBLE IN THE
WARNED AREA.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3407 11689 3411 11707 3429 11698 3435 11685
3431 11651 3422 11651 3407 11668
$$
BALFOUR799
WGUS76 KSGX 131419
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
719 AM PDT FRI JUL 13 2012
CAC071-131429-
/O.CAN.KSGX.FF.W.0001.000000T0000Z-120713T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
719 AM PDT FRI JUL 13 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTH CENTRAL SAN
BERNARDINO COUNTY...
LAT...LON 3407 11689 3411 11707 3429 11698 3435 11685
3431 11651 3422 11651 3407 11668
$$
BALFOURThe office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 2:05 PM PDT | Special Weather Statement | SGX | 40 min | |
| Jul 13, 2:29 PM PDT | Flash Flood Warning | SGX | San Bernardino | 75 min |
| Jul 13, 2:43 PM PDT | Flash Flood Warning | SGX | San Bernardino | 61 min |
| Jul 13, 4:26 PM PDT | Special Weather Statement | SGX | San Diego | 64 min |
Nearby
Flash Flood Warnings in California, 2012Every flash flood warning in 2012
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.