Alert archive / California / Flash Flood Warnings in 2014
Flash Flood Warning 39, NWS San Diego, CA
NWS San Diego, CA issued this flash flood warning at Sep 7, 2014, 1:09 PM PDT for Riverside County, San Bernardino County, California. It was in force for 3 hr. 7 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
- Sep 7, 2014, 1:09 PM PDT (20:09 UTC)
- Expired
- Sep 7, 2014, 4:15 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), 43 km from the middle of the area, began a volume at 20:09 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 |
|---|---|---|---|
| Sep 7, 1:36 PM PDT | FLASH FLOOD | 1 Wsw Highgrove, CA | SPOTTER 217 REPORTED SEVERAL LOCATIONS FLOODED ALONG IOWA AVENUE IN RIVERSIDE, NEAR UC RIVERSIDE. IOWA AVENUE AT CENTER STREET, MARLBOROUGH STREET, AND SEVERAL OTHER SPOTS WERE UNDER A FOOT OR MORE OF WATER, RUNNING UP OVER THE GUTTERS AND CURBS. |
| Sep 7, 1:44 PM PDT | FLASH FLOOD | 3 S Highgrove, CA | CHP REPORTED ONE LANE OF THE NORTHBOUND UNIVERSITY ON-RAMP TO INTERSTATE 215 IS FLOODED. ALSO, ALL LANES OF NORTHBOUND INTERSTATE 215 ARE FLOODED, EXCEPT THE HOV LANE. |
| Sep 7, 1:51 PM PDT | FLASH FLOOD | 2 Wsw Highgrove, CA | CHP REPORTED THE SLOW LANE OF HIGHWAY 60 AT MAIN STREET UNDER AT LEAST 2 FEET OF WATER WITH SEVERAL VEHICLES STUCK IN THE WATER. |
| Sep 7, 1:53 PM PDT | FLASH FLOOD | 2 W Running Springs, CA | CALIFORNIA HIGHWAY PATROL REPORTED ROCKS 2 FEET IN DIAMETER BLOCKING LANES. |
| Sep 7, 2:00 PM PDT | FLASH FLOOD | 3 Nne Riverside, CA | CHP REPORTED A WOMAN STUCK IN HER VEHICLE ON THE 14TH STREET ON-RAMP TO EASTBOUND SR 91. SEVERAL VEHICLES ARE ALSO STUCK IN APPROXIMATELY 4 FEET OF WATER AT THE RAILROAD CROSSING ON 14TH STREET. CHP WILL SHUT DOWN BOTH SIDES OF THE ROAD THERE. |
| Sep 7, 2:10 PM PDT | FLASH FLOOD | 3 Ssw San Bernardino, CA | CHP REPORTED WATER BREAKING THROUGH THE RIGHT-SIDE BERM, FLOODING ALL SOUTHBOUND LANES OF INTERSTATE 215, BLOCKING THE 2ND STREET EXIT. |
| Sep 7, 2:22 PM PDT | FLASH FLOOD | 4 Wsw Running Springs, CA | CALIFORNIA HIGHWAY PATROL REPORTS A BOULDER HITTING THE WINDSHIELD OF A BLACK TOYOTA PRIUS ON HIGHWAY 330. |
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, 8.2 hours before the alert went out and 145 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
- 2509 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
609 WGUS56 KSGX 072009 FFWSGX CAC065-071-072315- /O.NEW.KSGX.FF.W.0039.140907T2009Z-140907T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN DIEGO CA 109 PM PDT SUN SEP 7 2014 THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN RIVERSIDE COUNTY IN SOUTHERN CALIFORNIA... THIS INCLUDES THE CITIES OF...RIVERSIDE...MORENO VALLEY... SOUTHWESTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... THIS INCLUDES THE CITIES OF...SAN BERNARDINO...RIALTO...REDLANDS... FONTANA... * UNTIL 415 PM PDT * AT 100 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS NEAR RIVERSIDE AND SAN BERNARDINO WHICH WILL LIKELY PRODUCE FLASH FLOODING. THE THUNDERSTORMS WERE NEARLY STATIONARY. INTERSTATES 10 AND 215 MAY BE IMPACTED. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RUNNING SPRINGS...RUBIDOUX...PEDLEY...MUSCOY...LOMA LINDA... HIGHLAND...CRESTLINE...COLTON AND BLOOMINGTON. 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 3430 11738 3421 11708 3380 11724 3389 11754 $$ HARRISON
2 follow-up statements
446 WGUS76 KSGX 072100 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 200 PM PDT SUN SEP 7 2014 CAC065-071-072315- /O.CON.KSGX.FF.W.0039.000000T0000Z-140907T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE CA-SAN BERNARDINO CA- 200 PM PDT SUN SEP 7 2014 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM PDT FOR SOUTHWESTERN SAN BERNARDINO AND NORTHWESTERN RIVERSIDE COUNTIES... AT 148 PM PDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING IN RIVERSIDE...RESULTING IN VEHICLES STUCK IN 2 TO 4 FEET OF WATER AND ROADS BEING CLOSED...AND THUNDERSTORMS ARE STILL IN THE RIVERSIDE AND SAN BERNARDINO AREAS. THERE HAVE ALSO BEEN TWO RAIN GAGES REPORTING RAINFALL OF AROUND 1 INCH IN THE PAST HOUR...AND RADAR ESTIMATES OF GREATER THAN 2 INCHES IN THE PAST HOUR IN SOME SPOTS. THE THUNDERSTORMS WITH EXCESSIVE RAIN WERE NEARLY STATIONARY. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN BERNARDINO...RUNNING SPRINGS...REDLANDS...MUSCOY...HIGHLAND... FONTANA...CRESTLINE AND BLOOMINGTON. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. && LAT...LON 3430 11738 3421 11708 3380 11724 3389 11754 $$ HARRISON
665 WGUS76 KSGX 072309 FFSSGX FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE SAN DIEGO CA 409 PM PDT SUN SEP 7 2014 CAC065-071-072316- /O.EXP.KSGX.FF.W.0039.000000T0000Z-140907T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RIVERSIDE CA-SAN BERNARDINO CA- 409 PM PDT SUN SEP 7 2014 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 415 PM PDT FOR SOUTHWESTERN SAN BERNARDINO AND NORTHWESTERN RIVERSIDE COUNTIES... THUNDERSTORMS OVER THE CENTRAL INLAND EMPIRE THAT PRODUCED FLASH FLOODING IN RIVERSIDE AND SAN BERNARDINO CITIES HAS DIMINISHED OVER THE PAST HOUR...AND SO THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...ROAD CLOSURES ARE STILL IN EFFECT...AND DRIVERS ARE STRONGLY ADVISED NOT TO CROSS FLOODED ROADWAYS! LAT...LON 3430 11738 3421 11708 3380 11724 3389 11754 $$ HARRISON
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 10:55 AM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Sep 7, 12:05 PM PDT | Flash Flood Warning | SGX | Riverside | 3 hr |
| Sep 7, 12:19 PM PDT | Areal Flood Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 5 hr |
| Sep 7, 12:25 PM PDT | Areal Flood Advisory | SGX | San Diego | 5 hr |
| Sep 7, 12:35 PM PDT | Areal Flood Advisory | SGX | San Bernardino | 3 hr |
| Sep 7, 1:27 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Sep 7, 1:34 PM PDT | Flash Flood Warning | SGX | San Diego | 3 hr |
| Sep 7, 2:30 PM PDT | Special Weather Statement | SGX | 60 min |
Nearby
Flash Flood Warnings in California, 2014Every flash flood warning in 2014
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.