Alert archive / California / Flash Flood Warnings in 2018
Flash Flood Warning 77, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 19, 2018, 6:39 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
- Jul 19, 2018, 6:39 PM PDT (01:39 UTC)
- Expired
- Jul 19, 2018, 9:30 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 San Joaquin Valley radar (KHNX), 198 km from the middle of the area, began a volume at 01:42 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 00:00Z, 1.7 hours before the alert went out and 220 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
- 1033 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 3228 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 61 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
396 WGUS55 KVEF 200139 FFWVEF CAC027-200430- /O.NEW.KVEF.FF.W.0077.180720T0139Z-180720T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 639 PM PDT THU JUL 19 2018 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... North central Inyo County in south central California... * Until 930 PM PDT. * At 636 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is expected to begin shortly. * Flash flooding will remain over mainly rural areas of north central Inyo County including portions of northern Death Valley National Park between Big Pine Road and Ubehebe Crater. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3746 11783 3707 11731 3688 11764 3746 11813 $$ KG
2 follow-up statements
306 WGUS75 KVEF 200229 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 729 PM PDT THU JUL 19 2018 CAC027-200430- /O.CON.KVEF.FF.W.0077.000000T0000Z-180720T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 729 PM PDT THU JUL 19 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM PDT FOR NORTH CENTRAL INYO COUNTY... At 727 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is expected to begin shortly. Flash flooding will remain over mainly rural areas of north central Inyo County including portions of Death Valley National Park north of Ubehebe Crater. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 3746 11783 3707 11731 3688 11764 3746 11813 $$ KG
592 WGUS75 KVEF 200420 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 920 PM PDT THU JUL 19 2018 CAC027-200430- /O.EXP.KVEF.FF.W.0077.000000T0000Z-180720T0430Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 920 PM PDT THU JUL 19 2018 ...THE FLASH FLOOD WARNING FOR NORTH CENTRAL INYO COUNTY WILL EXPIRE AT 930 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 3746 11783 3707 11731 3688 11764 3746 11813 $$ KG
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 8:45 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Jul 19, 11:26 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Jul 20, 3:05 AM PDT | Excessive Heat Warning | VEF | Inyo, San Bernardino | 9 days |
| Jul 20, 2:04 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Jul 20, 3:35 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 20, 4:38 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
Nearby
Flash Flood Warnings in California, 2018Every flash flood warning in 2018
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.