Alert archive / California / Flash Flood Warnings in 2015
Flash Flood Warning 8, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Jul 19, 2015, 2:50 PM PDT for Riverside County, San Bernardino County, California. It was in force for 3 hr. 11 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 19, 2015, 2:50 PM PDT (21:50 UTC)
- Expired
- Jul 19, 2015, 5:45 PM PDT
- In force
- 3 hr
- Issued by
- NWS San Diego, CA
- Area
- Storm-based polygon
- Flood severity
- None
The radar
The Santa Ana Mts radar (KSOX), 28 km from the middle of the area, began a volume at 21:51 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 19, 2:50 PM PDT | FLASH FLOOD | March Afb, CA | CHP REPORTS NUMBER 3 LANE AT INTERSTATE 215 SOUTHBOUND NEAR THE VAN BUREN BLVD EXIT COMPLETELY FLOODED. |
| Jul 19, 3:07 PM PDT | FLASH FLOOD | 4 Nw Lake Elsinore, CA | CHP REPORTS NUMBER 1 AND NUMBER 2 LANES FLOODED AT INTERSTATE 15 AND NICHOLS ROAD. |
| Jul 19, 3:21 PM PDT | FLASH FLOOD | 5 Se Home Gardens, CA | CHP REPORT OF ROADWAY COVERED IN MUD AT CAJALCO ROAD AND LA SIERRA AVE. |
| Jul 19, 3:22 PM PDT | FLASH FLOOD | 4 Nnw Moreno Valley, CA | CHP REPORTS MASSIVE FLOODING FROM COLTON TO MORENO VALLEY. SEVERAL VEHICLES STUCK IN THE AREA. SIDES OFF THE RECHE CANYON ARE FLOODED AND PARTIES IN THEIR HOMES ARE NOT ABLE TO LEAVE. |
| Jul 19, 3:26 PM PDT | FLASH FLOOD | 1 Ene Riverside, CA | CHP REPORTS MUD ACROSS ALL LANES AT SR 91 AND CENTRAL AVE. |
| Jul 19, 3:26 PM PDT | FLASH FLOOD | 1 Ne Riverside, CA | CHP REPORTS MUD ACROSS ALL LANES AT SR 91 AND CENTRAL AVE. |
| Jul 19, 3:31 PM PDT | FLASH FLOOD | 1 Wsw Riverside, CA | CHP REPORTS VEHICLE STUCK IN FLOOD WATERS AT SR 91 AND ADAMS ST. |
| Jul 19, 3:31 PM PDT | FLASH FLOOD | 2 Sw Riverside, CA | CHP REPORTS VEHICLE STUCK IN FLOOD WATERS AT SR 91 AND ADAMS ST. |
| Jul 19, 3:43 PM PDT | FLASH FLOOD | 3 Sw Riverside, CA | CHP REPORTS PASSENGER STUCK IN FLOOD WATERS AT SR 91 NEAR THE VAN BUREN OFF-RAMP. |
| Jul 19, 3:50 PM PDT | FLASH FLOOD | 3 Nnw March Afb, CA | CHP REPORTS MAJOR FLOODING AT SR 60 AND DAY ST WITH ONLY THE HOV LANE OPEN. |
| Jul 19, 3:50 PM PDT | FLASH FLOOD | 4 Nnw March Afb, CA | CHP REPORTS MAJOR FLOODING AT SR 60 AND DAY ST WITH ONLY THE HOV LANE OPEN. |
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, 9.8 hours before the alert went out and 118 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
- 335 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 1500 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
396
WGUS56 KSGX 192150
FFWSGX
CAC065-071-200045-
/O.NEW.KSGX.FF.W.0008.150719T2150Z-150720T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
250 PM PDT SUN JUL 19 2015
THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA...
RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA...
* UNTIL 545 PM PDT
* AT 246 PM PDT...DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA FROM REDLANDS
SOUTHWARDS TOWARDS LAKE ELSINORE. RADAR ESTIMATES OF GREATER THAN
ONE INCH PER HOUR ARE OCCURRING. FLASH FLOODING WILL LIKELY BEGIN
SHORTLY.
* SOME LOCATIONS THAT WILL LIKELY EXPERIENCE FLOODING INCLUDE...
RIVERSIDE...SAN BERNARDINO...MORENO VALLEY...SOUTHERN CORONA...
RIALTO...REDLANDS...LAKE ELSINORE...PERRIS...HIGHLAND...COLTON...
LOMA LINDA...RUBIDOUX...LAKE MATHEWS...WOODCREST...TEMESCAL
VALLEY...MARCH AFB...MENTONE...GRAND TERRACE...EAGLE VALLEY AND
HIGHGROVE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3363 11734 3380 11752 3410 11738 3412 11708
$$
JT2 follow-up statements
993 WGUS76 KSGX 192321 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 421 PM PDT SUN JUL 19 2015 CAC065-071-200045- /O.CON.KSGX.FF.W.0008.000000T0000Z-150720T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA-RIVERSIDE CA- 421 PM PDT SUN JUL 19 2015 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM PDT FOR SAN BERNARDINO AND RIVERSIDE COUNTIES... AT 419 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS MOVING WESTWARD...OUT OF THE AREA. HOWEVER...THERE HAVE BEEN MULTIPLE REPORTS OF VEHICLES STUCK IN MUD...ROADWAY FLOODING...AND STRANDED PARTIES DUE TO FLOODING IN THE WARNED AREA. THOUGH THE HEAVY RAIN HAS SUBSIDED...FLASH FLOODING WILL CONTINUE THROUGH AT LEAST 545 PM. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... RIVERSIDE...SAN BERNARDINO...MORENO VALLEY...RIALTO...REDLANDS...LAKE ELSINORE...PERRIS...HIGHLAND...COLTON...LOMA LINDA... MATHEWS... MARCH AFB...MENTONE...GRAND TERRACE...EAGLE VALLEY AND HIGHGROVE. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3363 11734 3380 11752 3410 11738 3412 11708 $$ JT
117 WGUS76 KSGX 200055 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 555 PM PDT SUN JUL 19 2015 CAC065-071-200100- /O.EXP.KSGX.FF.W.0008.000000T0000Z-150720T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA-RIVERSIDE CA- 555 PM PDT SUN JUL 19 2015 ...THE FLASH FLOOD WARNING FOR SAN BERNARDINO AND RIVERSIDE COUNTIES HAS EXPIRED... THE HEAVY RAIN HAS ENDED...AND FLASH FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. HOWEVER...MINOR STREET FLOODING WILL CONTINUE BETWEEN REDLANDS AND LAKE ELSINORE FOR THE NEXT COUPLE OF HOURS. UPON ARRIVING AT A FLOODED ROADWAY...TURN AROUND DONT DROWN. LAT...LON 3363 11734 3380 11752 3410 11738 3412 11708 $$ JT
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 12:24 PM PDT | Areal Flood Advisory | SGX | San Diego | 8 hr |
| Jul 19, 1:27 PM PDT | Areal Flood Advisory | SGX | Riverside, San Diego | 5 hr |
| Jul 19, 1:55 PM PDT | Severe Thunderstorm Warning | SGX | Riverside | 65 min |
| Jul 19, 1:58 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Jul 19, 2:37 PM PDT | Areal Flood Advisory | SGX | San Diego | 4 hr |
| Jul 19, 3:07 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Jul 19, 3:16 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 3 hr |
| Jul 19, 3:34 PM PDT | Flash Flood Warning | SGX | Riverside, San Bernardino | 5 hr |
| Jul 19, 4:35 PM PDT | Flash Flood Warning | SGX | Riverside | 5 hr |
| Jul 19, 4:40 PM PDT | Flash Flood Warning | SGX | Orange | 6 hr |
Nearby
Flash Flood Warnings in California, 2015Every flash flood warning in 2015
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.