Alert archive / Nevada / Flash Flood Warnings in 2018
Flash Flood Warning 89, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 30, 2018, 2:16 PM PDT for Clark County, Nevada. 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 30, 2018, 2:16 PM PDT (21:16 UTC)
- Expired
- Jul 30, 2018, 5:15 PM PDT
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Clark County, NV
The radar
The Las Vegas radar (KESX), 93 km from the middle of the area, began a volume at 21:15 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, 9.3 hours before the alert went out and 7 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
- 1226 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 2495 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
899 WGUS55 KVEF 302116 FFWVEF NVC003-310015- /O.NEW.KVEF.FF.W.0089.180730T2116Z-180731T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 216 PM PDT MON JUL 30 2018 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... West central Clark County in southern Nevada... * Until 515 PM PDT. * At 215 PM PDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. One to two inches of rain has already fallen. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Rainbow Canyon, Spring Mountains, Mt. Charleston, Mahogany Grove Campground, Mary Jane Falls Campground, Kyle Canyon Campground, State Highway 156, State Highway 157, Dolomite Campground, Fletcher View Campground, Mcwilliams Campground and Hilltop Campground. 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 3642 11557 3626 11539 3620 11567 3631 11571 $$ KG
2 follow-up statements
433 WGUS75 KVEF 302238 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 338 PM PDT MON JUL 30 2018 NVC003-310015- /O.CON.KVEF.FF.W.0089.000000T0000Z-180731T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clark NV- 338 PM PDT MON JUL 30 2018 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 PM PDT FOR WEST CENTRAL CLARK COUNTY... At 337 PM PDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain over the warned area. One to two inches of rain has already fallen. Flash flooding is expected to begin shortly. Some locations that will experience flooding include... Rainbow Canyon, Spring Mountains, Mt. Charleston, Mahogany Grove Campground, Mary Jane Falls Campground, Kyle Canyon Campground, Dolomite Campground, Fletcher View Campground, Mcwilliams Campground and Hilltop Campground. PRECAUTIONARY/PREPAREDNESS ACTIONS... Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks. && LAT...LON 3642 11557 3626 11539 3620 11567 3631 11571 $$ KG
830 WGUS75 KVEF 310006 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 506 PM PDT MON JUL 30 2018 NVC003-310015- /O.EXP.KVEF.FF.W.0089.000000T0000Z-180731T0015Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clark NV- 506 PM PDT MON JUL 30 2018 ...THE FLASH FLOOD WARNING FOR WEST CENTRAL CLARK COUNTY WILL EXPIRE AT 515 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 3642 11557 3626 11539 3620 11567 3631 11571 $$ KG
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 2:01 PM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
| Jul 30, 4:07 PM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
Nearby
Flash Flood Warnings in Nevada, 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.