Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 212, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 11, 2012, 11:02 PM PDT for San Bernardino County, California. It was in force for 118 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
- Sep 11, 2012, 11:02 PM PDT (06:02 UTC)
- Expired
- Sep 12, 2012, 1:00 AM PDT
- In force
- 118 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County San Bernardino County, CA
The radar
The Las Vegas radar (KESX), 123 km from the middle of the area, began a volume at 06:05 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 12, 12:25 AM PDT | FLASH FLOOD | 5 Nnw Baker, CA | CALIFORNIA HIGHWAY PATROL REPORTED FLASH FLOODING 5 MILES NORTH OF BAKER ALONG STATE ROUTE 127. ONE VEHICLE WAS STUCK IN RUNNING FLOOD WATER WITH WATER AS HIGH AS THE DASHBOARD. THE PERSON WAS STILL IN THE VEHICLE AND FIRST RESPONDERS WERE ENROUTE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 00:00Z, 6.0 hours before the alert went out and 107 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
- 352 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -59 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
303 WGUS55 KVEF 120602 FFWVEF CAC071-120800- /O.NEW.KVEF.FF.W.0212.120912T0602Z-120912T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1102 PM PDT TUE SEP 11 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTH CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 100 AM PDT. * AT 1057 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A CLUSTER OF THUNDERSTORMS OVER SR 127 NORTH OF BAKER NEAR DUMONT DUNES. NORTHWEST OF BAKER. THESE STORMS WERE MOVING TO THE SOUTHEAST AT 10 MPH. * LOCATIONS IMPACTED INCLUDE...SR 127 FROM BAKER TO 8 MILES NORTH OF DUMONT DUNES. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3579 11640 3579 11624 3532 11602 3532 11618 $$ KENNEDY
2 follow-up statements
107 WGUS75 KVEF 120652 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1152 PM PDT TUE SEP 11 2012 CAC071-120800- /O.CON.KVEF.FF.W.0212.000000T0000Z-120912T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 1152 PM PDT TUE SEP 11 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 100 AM PDT FOR NORTH CENTRAL SAN BERNARDINO COUNTY... AT 1148 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED MODERATE TO HEAVY RAIN STILL FALLING NORTH OF BAKER ALONG SR 127...AND EAST OF 127...WHICH DRAINS TO THE WEST AND BACK TO THE ROADWAY. LOCATIONS IMPACTED INCLUDE... SR 127 FROM BAKER TO 8 MILES NORTH OF DUMONT DUNES. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3579 11640 3579 11624 3532 11602 3532 11618 $$ KENNEDY
925 WGUS75 KVEF 120804 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 104 AM PDT WED SEP 12 2012 CAC071-120809- /O.EXP.KVEF.FF.W.0212.000000T0000Z-120912T0800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 104 AM PDT WED SEP 12 2012 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR NORTH CENTRAL SAN BERNARDINO COUNTY... THUNDERSTORMS WITH HEAVY RAIN HAVE ENDED OVER STATE ROUTE 127 NORTH OF BAKER AND NO ADDITIONAL HEAVY RAIN IS EXPECTED IN THE AREA. CALIFORNIA HIGHWAY PATROL REPORTED ONE SWIFT WATER RESCUE ALONG 127 AND HAVE CLOSED THE ROADWAY UNTIL FLOOD WATERS RECEDE. THEREFORE...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 3579 11640 3579 11624 3532 11602 3532 11618 $$ KENNEDY
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 5:25 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 35 min |
| Sep 11, 5:43 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Sep 11, 5:54 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 19 min |
| Sep 11, 6:41 PM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Sep 11, 7:54 PM PDT | Flash Flood Warning | VEF | Inyo | 71 min |
| Sep 11, 8:36 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 39 min |
| Sep 11, 9:59 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 76 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.