Alert archive / California / Flash Flood Warnings in 2017
Flash Flood Warning 68, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 2, 2017, 8:19 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 2, 2017, 8:19 PM PDT (03:19 UTC)
- Expired
- Aug 2, 2017, 11:15 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), 73 km from the middle of the area, began a volume at 03:19 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, 3.3 hours before the alert went out and 82 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
- 706 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 3193 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
142 WGUS55 KVEF 030319 FFWVEF CAC071-030615- /O.NEW.KVEF.FF.W.0068.170803T0319Z-170803T0615Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 819 PM PDT WED AUG 2 2017 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... Northeastern San Bernardino County in southern California... * Until 1115 PM PDT * At 819 PM PDT, Doppler radar indicated thunderstorms producing heavy rain over Kingston Road north of Interstate 15. Flash flooding is expected to begin shortly. * Flash flooding will remain over mainly rural areas of northeastern San Bernardino County. LAT...LON 3578 11562 3548 11557 3543 11577 3578 11592 $$ Morgan
2 follow-up statements
906 WGUS75 KVEF 030512 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 1012 PM PDT WED AUG 2 2017 CAC071-030615- /O.CON.KVEF.FF.W.0068.000000T0000Z-170803T0615Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Bernardino CA- 1012 PM PDT WED AUG 2 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM PDT FOR NORTHEASTERN SAN BERNARDINO COUNTY... At 1007 PM PDT, Doppler radar indicated the thunderstorms producing heavy rain have move to the west. However, flash flooding from the earlier heavy rain is expected to continue along Excelsior Mine Road and Kingston Road. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be especially cautious at night when it is harder to recognize the dangers of flooding. && LAT...LON 3578 11562 3548 11557 3543 11577 3578 11592 $$ Czyzyk
229 WGUS75 KVEF 030616 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 1116 PM PDT WED AUG 2 2017 CAC071-030625- /O.EXP.KVEF.FF.W.0068.000000T0000Z-170803T0615Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ San Bernardino CA- 1116 PM PDT WED AUG 2 2017 ...THE FLASH FLOOD WARNING FOR NORTHEASTERN SAN BERNARDINO COUNTY HAS EXPIRED... The heavy rain has ended over north eastern San Bernardino County and flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures and use caution while driving through the area. LAT...LON 3578 11562 3548 11557 3543 11577 3578 11592 $$ JS
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 5:53 PM PDT | Flash Flood Warning | VEF | Inyo | 2 hr |
| Aug 2, 7:19 PM PDT | Severe Thunderstorm Warning | VEF | San Bernardino | 26 min |
| Aug 2, 7:36 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Aug 2, 8:09 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 2, 8:57 PM PDT | Areal Flood Advisory | VEF | Inyo | 3 hr |
| Aug 2, 9:54 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Aug 2, 10:04 PM PDT | Flash Flood Warning | VEF | Inyo, San Bernardino | 3 hr |
| Aug 2, 11:36 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 3 hr |
| Aug 3, 2:27 AM PDT | Flash Flood Watch | VEF | Inyo, San Bernardino | 21 hr |
| Aug 3, 6:02 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 3, 7:41 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 3, 8:59 AM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Aug 3, 2:00 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.