Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 93, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 18, 2016, 7:21 PM PDT for San Bernardino County, California. It was in force for 3 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
- Aug 18, 2016, 7:21 PM PDT (02:21 UTC)
- Expired
- Aug 18, 2016, 10:15 PM PDT
- In force
- 3 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), 138 km from the middle of the area, began a volume at 02:22 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
Yuma Prvg Ground, AZ (K1Y7), launched 00:00Z, 2.4 hours before the alert went out and 221 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
- 124 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 3543 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
329 WGUS55 KVEF 190221 FFWVEF CAC071-190515- /O.NEW.KVEF.FF.W.0093.160819T0221Z-160819T0515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 721 PM PDT THU AUG 18 2016 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 1015 PM PDT * AT 720 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PERSISTING OVER HIGHWAY 95 BETWEEN MILE MARKERS 28 AND 35. FLASH FLOODING IS ALREADY OCCURRING AND WILL CONTINUE THROUGH THE EVENING. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... HIGHWAY 95 AT MILE MARKER 29. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3454 11458 3442 11455 3438 11472 3449 11474 $$ MORGAN
2 follow-up statements
579 WGUS75 KVEF 190327 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 827 PM PDT THU AUG 18 2016 CAC071-190515- /O.CON.KVEF.FF.W.0093.000000T0000Z-160819T0515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 827 PM PDT THU AUG 18 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM PDT FOR SOUTHEASTERN SAN BERNARDINO COUNTY... AT 825 PM PDT...DOPPLER RADAR INDICATED HEAVY RAIN PERSISTING ON HIGHWAY 95. THE CALIFORNIA HIGHWAY PATROL REPORTED THAT THE HIGHWAY WILL BE CLOSED AT INTERSTATE 40. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... HIGHWAY 95 AT MILE MARKER 29. PRECAUTIONARY/PREPAREDNESS ACTIONS... TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES. && LAT...LON 3454 11458 3442 11455 3438 11472 3449 11474 $$ MORGAN
612 WGUS75 KVEF 190506 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 1006 PM PDT THU AUG 18 2016 CAC071-190515- /O.EXP.KVEF.FF.W.0093.000000T0000Z-160819T0515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 1006 PM PDT THU AUG 18 2016 ...THE FLASH FLOOD WARNING FOR SOUTHEASTERN SAN BERNARDINO COUNTY WILL EXPIRE AT 1015 PM PDT... THE HEAVY RAIN HAS ENDED. HOWEVER, AS OF LAST REPORT, HIGHWAY 95 WAS IMPASSABLE AND CLOSED. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES. LAT...LON 3454 11458 3442 11455 3438 11472 3449 11474 $$ MORGAN
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 5:26 PM PDT | Flash Flood Warning | VEF | San Bernardino | 2 hr |
| Aug 18, 9:06 PM PDT | Flash Flood Warning | VEF | San Bernardino | 114 min |
| Aug 19, 2:44 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 19, 4:41 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2016Every flash flood warning in 2016
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.