Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 188, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 5, 2012, 5:00 PM PDT for San Bernardino County, California. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 5, 2012, 5:00 PM PDT (00:00 UTC)
- Expired
- Sep 5, 2012, 7:00 PM 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), 88 km from the middle of the area, began a volume at 00:01 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.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 00:00Z, 0.0 hours before the alert went out and 177 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
- 2 J/kg
- Mixed-layer CIN
- -147 J/kg
- Mixed-layer LCL
- 2760 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
116 WGUS55 KVEF 060000 FFWVEF CAC071-060200- /O.NEW.KVEF.FF.W.0188.120906T0000Z-120906T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 500 PM PDT WED SEP 5 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 700 PM PDT. * AT 457 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM NEAR HIGHWAY 95 AND I-40...OR 20 MILES SOUTHWEST OF LAUGHLIN. THE STORM PRODUCING VERY HEAVY RAIN WAS MOVING EAST AROUND 10 MPH. * LOCATIONS IMPACTED INCLUDE...PIUTE WASH NORTH OF INTERSTATE 40. 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 3493 11479 3493 11474 3489 11473 3489 11479 $$ PIERCE
2 follow-up statements
888 WGUS75 KVEF 060108 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 608 PM PDT WED SEP 5 2012 CAC071-060200- /O.CON.KVEF.FF.W.0188.000000T0000Z-120906T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 608 PM PDT WED SEP 5 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM PDT FOR EAST CENTRAL SAN BERNARDINO COUNTY... AT 606 PM PDT...CALIFORNIA HIGHWAY PATROL REPORTED DEBRIS AND WATER ACROSS HIGHWAY 95...JUST TO THE NORTH OF INTERSTATE 40. THE THUNDERSTORM HAS DISSIPATED BUT RUNOFF WILL CONTINUE IN PIUTE WASH THROUGH 7 PM PDT. LOCATIONS IMPACTED INCLUDE...PIUTE WASH. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3493 11479 3493 11474 3489 11473 3489 11479 $$ PIERCE
141 WGUS75 KVEF 060156 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 656 PM PDT WED SEP 5 2012 CAC071-060204- /O.EXP.KVEF.FF.W.0188.000000T0000Z-120906T0200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 656 PM PDT WED SEP 5 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM PDT FOR EAST CENTRAL SAN BERNARDINO COUNTY... HEAVY RAINFALL HAS ENDED ALONG HIGHWAY 95...JUST NORTH OF INTERSTATE 40. ANY RUNOFF CONTINUING OVER THE HIGHWAY SHOULD RECEDE QUICKLY. THE FLASH FLOOD WARNING WILL EXPIRE AT 7 PM PDT. LAT...LON 3493 11479 3493 11474 3489 11473 3489 11479 $$ PIERCE
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.