Alert archive / California / Flash Flood Warnings in 2016
Flash Flood Warning 95, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 19, 2016, 2:44 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 19, 2016, 2:44 PM PDT (21:44 UTC)
- Expired
- Aug 19, 2016, 5:45 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), 65 km from the middle of the area, began a volume at 21:45 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, 9.7 hours before the alert went out and 129 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
- 77 J/kg
- Mixed-layer CIN
- -336 J/kg
- Mixed-layer LCL
- 2938 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
183 WGUS55 KVEF 192144 FFWVEF CAC071-200045- /O.NEW.KVEF.FF.W.0095.160819T2144Z-160820T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE LAS VEGAS NV 244 PM PDT FRI AUG 19 2016 THE NATIONAL WEATHER SERVICE IN LAS VEGAS HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL SAN BERNARDINO COUNTY IN SOUTHERN CALIFORNIA... * UNTIL 545 PM PDT * AT 242 PM PDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN OVER THE MOJAVE PRESERVE SOUTHEAST OF CIMA. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY. * SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... MID HILLS CAMPGROUND AND SECONDARY ROADS. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING SPOTS. && LAT...LON 3533 11523 3509 11519 3511 11546 3527 11546 $$ JS
2 follow-up statements
843 WGUS75 KVEF 192319 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 419 PM PDT FRI AUG 19 2016 CAC071-200045- /O.CON.KVEF.FF.W.0095.000000T0000Z-160820T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 419 PM PDT FRI AUG 19 2016 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM PDT FOR CENTRAL SAN BERNARDINO COUNTY... THUNDERSTORMS HAVE ENDED IN THE WARNING AREA HOWEVER WATER OVER LOW LYING AREAS OF SECONDARY ROADWAYS AND ELEVATED WATER LEVELS IN AREA WASHES ARE POSSIBLE DUE TO HEAVY RAIN FROM EARLIER THUNDERSTORM ACTIVITY. USE CAUTION IF TRAVELING IN THE MOJAVE NATIONAL PRESERVE SOUTHEAST OF CIMA. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... MID HILLS CAMPGROUND AND SECONDARY ROADS. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED ROADS. FIND AN ALTERNATE ROUTE. && LAT...LON 3533 11523 3509 11519 3511 11546 3527 11546 $$ JS
311 WGUS75 KVEF 200036 FFSVEF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 536 PM PDT FRI AUG 19 2016 CAC071-200045- /O.EXP.KVEF.FF.W.0095.000000T0000Z-160820T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SAN BERNARDINO CA- 536 PM PDT FRI AUG 19 2016 ...THE FLASH FLOOD WARNING FOR CENTRAL SAN BERNARDINO COUNTY WILL EXPIRE AT 545 PM PDT... THE HEAVY RAIN HAS ENDED AND FLOODING IS NO LONGER EXPECTED TO POSE A THREAT. THE WARNING WILL BE ALLOWED TO EXPIRE AT 545 PM. LAT...LON 3533 11523 3509 11519 3511 11546 3527 11546 $$ JS
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, 7:21 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 18, 9:06 PM PDT | Flash Flood Warning | VEF | San Bernardino | 114 min |
| 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.