Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 10, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at May 6, 2016, 5:18 PM PDT for San Bernardino County, California. It was in force for 117 min. 4 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
- May 6, 2016, 5:18 PM PDT (00:18 UTC)
- Expired
- May 6, 2016, 7:15 PM PDT
- In force
- 117 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), 26 km from the middle of the area, began a volume at 00:18 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 |
|---|---|---|---|
| May 6, 5:30 PM PDT | FLASH FLOOD | 2 Sw Ontario, CA | CARS PARTIALLY SUBMERGED NEAR THE ONTARIO INTERNATIONAL AIRPORT AT GROVE AVENUE AND FRANCIS STREET...RESULTING IN THE INTERSECTION BEING TEMPORARILY SHUT DOWN. EXACT TIMING OF FLOOD IS UNCERTAIN. |
| May 6, 5:53 PM PDT | FLOOD | 2 Sw Ontario, CA | STREET FLOODING AT THE WALNUT STREET AND CUCAMONGA AVENUE INTERSECTION IN ONTARIO. |
| May 6, 6:05 PM PDT | FLASH FLOOD | 2 S Ontario, CA | CHP REPORT OF VEHICLES UNABLE TO MOVE DUE TO WATER ON THE ROAD AT THE SR-60 AND VINEYARD AVENUE ON-RAMP. |
| May 6, 6:10 PM PDT | HEAVY RAIN 1.21 | 1 Sse Ontario, CA | ROOF COLLAPSE AT A LOCAL BUSINESS IN THE 1700 BLOCK OF SOUTH HELLMAN AVENUE IN ONTARIO DUE TO HEAVY RAIN. MEASURED RAINFALL TAKEN FROM ONTARIO INTERNATIONAL AIRPORT. |
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 00:00Z, 0.3 hours before the alert went out and 142 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
- 325 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1067 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
090
WGUS56 KSGX 070018
FFWSGX
CAC071-070215-
/O.NEW.KSGX.FF.W.0010.160507T0018Z-160507T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
518 PM PDT FRI MAY 6 2016
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 715 PM PDT
* AT 516 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING WILL LIKELY
BEGIN SHORTLY. INTENSE RAINFALL HAS BEEN OCCURRING OVER THE SAME
AREA FOR OVER ONE HOUR AND ROCK HAVE BEEN REPORTED ON ROADWAYS.
* SOME LOCATIONS THAT WILL LIKELY EXPERIENCE FLOODING INCLUDE...
FONTANA...ONTARIO...CHINO...RANCHO CUCAMONGA...CHINO HILLS...UPLAND...
MONTCLAIR AND LOS SERRANOS CDP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3415 11747 3404 11741 3404 11756 3399 11756
3397 11762 3393 11762 3395 11775 3415 11766
$$
123 follow-up statements
039
WGUS76 KSGX 070042
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
542 PM PDT FRI MAY 6 2016
CAC071-070215-
/O.CON.KSGX.FF.W.0010.000000T0000Z-160507T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
542 PM PDT FRI MAY 6 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR SAN
BERNARDINO COUNTY...
AT 539 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING MAY ALREADY BE IN
PROGRESS. EXCESSIVE RAINFALL OVER THE WARNED AREA WILL CAUSE MUD
SLIDES NEAR STEEP TERRAIN. A MUD SLIDE CAN CONSIST OF
ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FONTANA...ONTARIO...CHINO...RANCHO CUCAMONGA...CHINO HILLS...UPLAND...
MONTCLAIR AND LOS SERRANOS CDP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3415 11747 3404 11741 3404 11756 3399 11756
3397 11762 3393 11762 3395 11775 3415 11766
$$
12893
WGUS76 KSGX 070142
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
642 PM PDT FRI MAY 6 2016
CAC071-070215-
/O.CON.KSGX.FF.W.0010.000000T0000Z-160507T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
642 PM PDT FRI MAY 6 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR SAN
BERNARDINO COUNTY...
AT 635 PM PDT...DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH
PRODUCED HEAVY RAIN ACROSS THE WARNED AREA HAD DISSIPATED. HOWEVER
RADAR ESTIMATES THAT MORE THAN 1.5 INCHES OF RAIN FELL OVER PARTS OF
THE WARNED AREA. THUS THE FLASH FLOOD WARNING REMAINS IN EFFECT FOR
THE POTENTIAL OF CONTINUED RUNOFF.
SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
FONTANA...ONTARIO...CHINO...RANCHO CUCAMONGA...CHINO
HILLS...UPLAND...AND MONTCLAIR.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNED AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.
&&
LAT...LON 3415 11747 3404 11741 3404 11756 3399 11756
3397 11762 3393 11762 3395 11775 3415 11766
$$
ALBRIGHT259
WGUS76 KSGX 070207
FFSSGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN DIEGO CA
707 PM PDT FRI MAY 6 2016
CAC071-070215-
/O.EXP.KSGX.FF.W.0010.000000T0000Z-160507T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN BERNARDINO CA-
707 PM PDT FRI MAY 6 2016
...THE FLASH FLOOD WARNING FOR SAN BERNARDINO COUNTY WILL EXPIRE AT
715 PM PDT...
THE HEAVY RAIN HAS ENDED AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. ADDITIONAL HEAVY RAINFALL IS NOT EXPECTED THIS EVENING.
LAT...LON 3415 11747 3404 11741 3404 11756 3399 11756
3397 11762 3393 11762 3395 11775 3415 11766
$$
ALBRIGHTNearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
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.