Alert archive / California / Flash Flood Warnings in 2012
Flash Flood Warning 66, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 30, 2012, 1:24 PM PDT for San Bernardino County, California. It was in force for 111 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 30, 2012, 1:24 PM PDT (20:24 UTC)
- Expired
- Jul 30, 2012, 3:15 PM PDT
- In force
- 111 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), 110 km from the middle of the area, began a volume at 20:26 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 12:00Z, 8.4 hours before the alert went out and 152 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
- 2888 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
615 WGUS55 KVEF 302024 FFWVEF CAC071-302215- /O.NEW.KVEF.FF.W.0066.120730T2024Z-120730T2215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 124 PM PDT MON JUL 30 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 315 PM PDT. * AT 113 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE RUNNING ALONG THE NORTH SIDE OF KELSO CIMA ROAD SOUTH OF KELSO...AND MOVING SLOWLY TO THE SOUTHWEST. THESE STORMS ARE ALL PRODUCING HEAVY RAIN OVER BASINS THAT DRAIN EAST AND ARE LIKELY RESULTING IN FLASH FLOODING ALONG THE KELSO CIMA ROAD...ESPECIALLY A KNOWN LOW WATER CROSSING NEAR FLYNN ALONG THE KELSO WASH. * LOCATIONS IMPACTED INCLUDE...KELSO...AND KELSO CIMA ROAD SOUTH OF KELSO AND AS FAR WEST AS SANDS. 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 3501 11603 3519 11570 3504 11551 3485 11560 $$ KENNEDY
2 follow-up statements
477 WGUS55 KVEF 302037 CCA FFWVEF CAC071-302215- /O.COR.KVEF.FF.W.0066.120730T2024Z-120730T2215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING...CORRECTED NATIONAL WEATHER SERVICE LAS VEGAS NV 124 PM PDT MON JUL 30 2012 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 315 PM PDT. * AT 113 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SEVERAL THUNDERSTORMS PRODUCING VERY HEAVY RAIN ALONG A LINE RUNNING ALONG THE WEST SIDE OF KELSO CIMA ROAD...EXTENDING FURTHER TO THE SOUTHWEST ALONG THIS LINE. THESE STORMS ARE MOVING SLOWLY TO THE SOUTHWEST. THESE STORMS ARE ALL PRODUCING HEAVY RAIN OVER BASINS THAT DRAIN EAST AND ARE LIKELY RESULTING IN FLASH FLOODING ALONG PORTIONS OF KELSO CIMA AND KELBAKER ROAD. * LOCATIONS IMPACTED INCLUDE...KELSO...HAYDEN...AND KELSO CIMA ROAD SOUTH OF THE MACEDONIA CANYON ROAD TURNOFF...AND KELBAKER ROAD 10 MILES NORTH AND SOUTH OF KELSO. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLASH FLOODING IS EXPECTED IN WASHES...LOW WATER CROSSINGS AND ON AREA ROADWAYS. FLASH FLOODING IS NATURES NUMBER ONE KILLER. TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND. NEVER TRY TO CROSS A FLOODED ROADWAY OR WALK THROUGH FLOODWATERS. TURN AROUND...DONT DROWN! REPORT FLOODING BY POSTING YOUR REPORT TO THE LAS VEGAS NATIONAL WEATHER SERVICE FACEBOOK PAGE...OR BY USING THE TWITTER HASHTAG... NWSVEGAS. && LAT...LON 3501 11603 3519 11570 3504 11551 3485 11560 $$ KENNEDY
894 WGUS75 KVEF 302210 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 310 PM PDT MON JUL 30 2012 CAC071-302218- /O.EXP.KVEF.FF.W.0066.000000T0000Z-120730T2215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 310 PM PDT MON JUL 30 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 315 PM PDT FOR CENTRAL SAN BERNARDINO COUNTY... HEAVY RAINFALL HAS NOT FALLEN WITHIN THE WARNING AREA DURING THE PAST HOUR...AND ANY FLOOD WATERS IMPACTING THE KELSO CIMA AND KELBAKER ROADS SHOULD BE RECEDING. THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 315 PM PDT. LAT...LON 3501 11603 3519 11570 3504 11551 3485 11560 $$ KENNEDY
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 9:00 PM PDT | Flash Flood Watch | VEF | San Bernardino | 25 hr |
| Jul 30, 11:53 AM PDT | Flash Flood Warning | VEF | San Bernardino | 112 min |
| Jul 30, 12:38 PM PDT | Flash Flood Warning | VEF | San Bernardino | 112 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.