Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 37, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 15, 2012, 12:29 AM PDT for San Bernardino County, California. It was in force for 2 hr. 2 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 15, 2012, 12:29 AM PDT (07:29 UTC)
- Expired
- Jul 15, 2012, 2:30 AM PDT
- In force
- 2 hr
- 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), 114 km from the middle of the area, began a volume at 07:31 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 15, 1:00 AM PDT | HEAVY RAIN 1.2 | 1 Se Baker, CA | THE BAKER CO-OP OBSERVER MEASURED 1.20 INCHES OF RAIN FROM 11 PM ON 7/14 THROUGH 1 AM ON 7/15. |
| Jul 15, 1:21 AM PDT | FLASH FLOOD | 2 Sse Baker, CA | CHP REPORTS KELBAKER RD IS CURRENTLY FLOODED JUST SOUTH OF I15. REPORT ALSO INDICATES DEBRIS IN ROADWAY DUE TO FLOODING. |
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, 7.5 hours before the alert went out and 130 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
- 48 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 2462 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- -43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
526 WGUS55 KVEF 150729 FFWVEF CAC071-150930- /O.NEW.KVEF.FF.W.0037.120715T0729Z-120715T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1229 AM PDT SUN JUL 15 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 230 AM PDT. * AT 1222 AM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM AN AREA OF THUNDERSTORMS NEAR BAKER. THE STORMS PRODUCING FLASH FLOODING WAS NEARLY STATIONARY. * LOCATIONS IMPACTED INCLUDE... BAKER. 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 3537 11614 3538 11590 3515 11586 3513 11613 $$ JH
2 follow-up statements
886 WGUS75 KVEF 150830 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 130 AM PDT SUN JUL 15 2012 CAC071-150930- /O.CON.KVEF.FF.W.0037.000000T0000Z-120715T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 130 AM PDT SUN JUL 15 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 AM PDT FOR CENTRAL SAN BERNARDINO COUNTY... AT 123 AM PDT...CALIFORNIA HIGHWAY PATROL OFFICIALS REPORTED FLASH FLOODING FROM HEAVY RAIN ON STATE ROUTE 127 JUST NORTH OF BAKER AND ON KELBAKER ROAD JUST SOUTH OF BAKER. A SINGLE THUNDERSTORM CONTINUE TO PRODUCE HEAVY RAIN SOUTH OF BAKER OVER THE SODA LAKE BED. THE THUNDERSTORM WITH EXCESSIVE RAIN WAS NEARLY STATIONARY. LOCATIONS IMPACTED INCLUDE...BAKER...STATE ROUTE 127 JUST NORTH OF BAKER...KELBAKER ROAD AND BRANNIGAN MINE ROAD HEADING SOUTH FROM BAKER. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3537 11614 3538 11590 3515 11586 3513 11613 $$ PIERCE
117 WGUS75 KVEF 150924 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 224 AM PDT SUN JUL 15 2012 CAC071-150931- /O.EXP.KVEF.FF.W.0037.000000T0000Z-120715T0930Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 224 AM PDT SUN JUL 15 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 230 AM PDT FOR CENTRAL SAN BERNARDINO COUNTY... THUNDERSTORMS THAT PRODUCED HEAVY RAINFALL THAT LEAD TO FLASH FLOODING OF STATE ROUTE 127 AND KELBAKER ROAD NEAR BAKER HAVE DIMINISHED IN INTENSITY GREATLY SINCE 130 AM PDT. THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 230 AM PDT. LAT...LON 3537 11614 3538 11590 3515 11586 3513 11613 $$ PIERCE
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 7:25 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 14, 8:50 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 27 min |
| Jul 14, 9:16 PM PDT | Flash Flood Warning | VEF | San Bernardino | 119 min |
| Jul 14, 11:35 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 40 min |
| Jul 15, 10:14 AM PDT | Flash Flood Watch | VEF | San Bernardino | 11 hr |
| Jul 15, 11:52 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 15, 11:59 AM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Jul 15, 2:20 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 115 min |
| Jul 15, 3:07 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 38 min |
| Jul 15, 4:52 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 38 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.