Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 61, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 2, 2017, 4:11 PM PDT for Inyo County, California. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 2, 2017, 4:11 PM PDT (23:11 UTC)
- Expired
- Aug 2, 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), 141 km from the middle of the area, began a volume at 23:14 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 2, 4:35 PM PDT | FLASH FLOOD | 14 W Panamint Springs, CA | CHP PERSONNEL CALLED ABOUT A ROAD CLOSURE ALONG HWY190 DUE TO 6 INCHES OF WATER FLOWING ACROSS ROADWAY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 11.2 hours before the alert went out and 193 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
- 141 J/kg
- Mixed-layer CIN
- -329 J/kg
- Mixed-layer LCL
- 2525 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
404 WGUS55 KVEF 022311 FFWVEF CAC027-030215- /O.NEW.KVEF.FF.W.0061.170802T2311Z-170803T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 411 PM PDT WED AUG 2 2017 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... Central Inyo County in south central California... * Until 715 PM PDT * At 410 PM PDT, Doppler radar indicated a slow moving thunderstorm producing heavy rain over Highway 190 about halfway between Keeler and Panamint Springs. Flash flooding is expected to begin shortly. * Flash flooding will remain over mainly rural areas of central Inyo County. 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 3641 11760 3627 11763 3629 11788 3643 11779 $$ Morgan
3 follow-up statements
470 WGUS75 KVEF 030006 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 506 PM PDT WED AUG 2 2017 CAC027-030215- /O.CON.KVEF.FF.W.0061.000000T0000Z-170803T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 506 PM PDT WED AUG 2 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR CENTRAL INYO COUNTY... At 504 PM PDT, Doppler radar indicated that thunderstorms had moved away from Highway 190. Some water may still be flowing down the hills toward the highway, so the warning will remain in effect. Flash flooding will remain over mainly rural areas of central Inyo County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, country roads, farmland, and other low lying spots. && LAT...LON 3641 11760 3627 11763 3629 11788 3643 11779 $$ Morgan
912 WGUS75 KVEF 030108 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 608 PM PDT WED AUG 2 2017 CAC027-030215- /O.CON.KVEF.FF.W.0061.000000T0000Z-170803T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 608 PM PDT WED AUG 2 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 PM PDT FOR CENTRAL INYO COUNTY... At 606 PM PDT, Doppler radar indicated only light rain falling over Highway 190 west of Townes Pass. Heavier rain was falling on Townes Pass, and a Flash Flood Warning is also in effect for that area until 830 PM PDT. Flash flooding will remain over mainly rural areas of central Inyo County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3641 11760 3627 11763 3629 11788 3643 11779 $$ Morgan
452 WGUS75 KVEF 030206 RRA FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 706 PM PDT WED AUG 2 2017 CAC027-030215- /O.EXP.KVEF.FF.W.0061.000000T0000Z-170803T0215Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Inyo CA- 706 PM PDT WED AUG 2 2017 ...THE FLASH FLOOD WARNING FOR CENTRAL INYO COUNTY WILL EXPIRE AT 715 PM PDT... Heavy rain had ended on Highway 190 west of Townes Pass, and no additional flooding is expected. Please continue to heed any remaining road closures. LAT...LON 3641 11760 3627 11763 3629 11788 3643 11779 $$ Morgan
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:30 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 75 min |
| Aug 1, 6:09 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 51 min |
| Aug 1, 7:51 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 6 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.