Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 101, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Sep 3, 2017, 4:24 PM PDT for Inyo 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
- Sep 3, 2017, 4:24 PM PDT (23:24 UTC)
- Expired
- Sep 3, 2017, 7:15 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Inyo County, CA
The radar
The Edwards AFB radar (KEYX), 209 km from the middle of the area, began a volume at 23:25 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, 11.4 hours before the alert went out and 169 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
- 23 J/kg
- Mixed-layer CIN
- -443 J/kg
- Mixed-layer LCL
- 3236 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
825 WGUS55 KVEF 032324 FFWVEF CAC027-040215- /O.NEW.KVEF.FF.W.0101.170903T2324Z-170904T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 424 PM PDT SUN SEP 3 2017 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... North central Inyo County in south central California... * Until 715 PM PDT * At 422 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Mesquite Springs Campground and Scottys Castle. North Highway and Grapevine Canyon roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 3711 11735 3685 11700 3681 11727 3696 11744 $$ CK
2 follow-up statements
265 WGUS75 KVEF 040004 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 504 PM PDT SUN SEP 3 2017 CAC027-040215- /O.CON.KVEF.FF.W.0101.000000T0000Z-170904T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 504 PM PDT SUN SEP 3 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR NORTH CENTRAL INYO COUNTY... At 502 PM PDT, Doppler radar indicated that thunderstorms were ending near Scotty's Castle. However runoff from earlier rainfall may be causing flooding in the area. Some locations that will experience flooding include... Mesquite Springs Campground and Scottys Castle. North Highway and Grapevine Canyon roads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 3711 11735 3685 11700 3681 11727 3696 11744 $$ CK
591 WGUS75 KVEF 040208 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 708 PM PDT SUN SEP 3 2017 CAC027-040218- /O.EXP.KVEF.FF.W.0101.000000T0000Z-170904T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 708 PM PDT SUN SEP 3 2017 ...THE FLASH FLOOD WARNING FOR NORTH CENTRAL INYO COUNTY WILL EXPIRE AT 715 PM PDT... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3711 11735 3685 11700 3681 11727 3696 11744 $$ STEELE
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 6:58 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 47 min |
| Sep 3, 3:18 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2017Every flash flood warning in 2017
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.