Alert archive / California / Flash Flood Warnings in 2007
Flash Flood Warning 8, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 25, 2007, 12:54 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 counties it named.
The facts
- Issued
- Jul 25, 2007, 12:54 PM PDT (19:54 UTC)
- Expired
- Jul 25, 2007, 3:00 PM PDT
- In force
- 2 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Whole counties
County San Bernardino County, CA
The nearest sounding before it
Mercury/Desert R, NV (KDRA), launched 12:00Z, 7.9 hours before the alert went out and 198 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
- 133 J/kg
- Mixed-layer CIN
- -159 J/kg
- Mixed-layer LCL
- 1881 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KVEF 251957 FFWVEF CAC071-252200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 1254 PM PDT WED JUL 25 2007 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL SAN BERNARDINO COUNTY IN SOUTHEAST CALIFORNIA... * UNTIL 300 PM PDT. * AT 1247 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. THE HEAVIEST RAINFALL IS OCCURRING OVER PINTO MOUNTAIN AND DRUM PEAK. NEW YORK MOUNTAIN ROAD...CEDAR CANYON ROAD...AND PROVIDENCE RANCH ROAD ARE ALL LOCATED IN THE WARNING AREA. * THE STORM PRODUCING FLASH FLOODING WILL REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. ADDITIONAL RAINFALL AMOUNTS OF ONE INCH ARE STILL POSSIBLE IN THE WARNED AREA. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TURN AROUND...DONT DROWN. LAT...LON 3512 11548 3515 11503 3539 11515 3535 11548 $$ SC
1 follow-up statement
000 WGUS75 KVEF 252018 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 115 PM PDT WED JUL 25 2007 CAC071-252200- SAN BERNARDINO CA- 115 PM PDT WED JUL 25 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM PDT FOR EAST CENTRAL SAN BERNARDINO COUNTY... AT 110 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED AREA. THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL IMPACT NEW YORK MOUNTAIN ROAD...CEDAR CANYON ROAD...PROVIDENCE RANCH ROAD...KELSO CIMA ROAD...AND BRANT CIMA ROAD. NATIONAL WEATHER SERVICE DOPPLER RADAR HAS INDICATED ONE TO TWO INCHES OF RAINFALL HAS FALLEN IN THE PAST HOUR ACROSS PORTIONS OF THE WARNED AREA. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. IN DESERT TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. SEVERAL INCHES OF SWIFTLY FLOWING WATER CAN CARRY VEHICLES AWAY. LAT...LON 3512 11548 3515 11503 3539 11515 3535 11548 $$ SC
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 5:01 PM PDT | Flash Flood Warning | VEF | San Bernardino | 44 min |
| Jul 25, 9:56 AM PDT | Flash Flood Watch | VEF | San Bernardino | 11 hr |
| Jul 25, 3:00 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Jul 25, 3:53 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 67 min |
Nearby
Flash Flood Warnings in California, 2007Every flash flood warning in 2007
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.