Alert archive / Nevada / Flash Flood Warnings in 2017
Flash Flood Warning 15, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 19, 2017, 6:23 AM PDT for Clark County, Nevada. It was in force for 5 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, 2017, 6:23 AM PDT (13:23 UTC)
- Expired
- Jul 19, 2017, 11:15 AM PDT
- In force
- 5 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), 101 km from the middle of the area, began a volume at 13:24 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, 1.4 hours before the alert went out and 96 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
- 539 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 2329 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
174 WGUS55 KVEF 191323 FFWVEF NVC003-191615- /O.NEW.KVEF.FF.W.0015.170719T1323Z-170719T1615Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 623 AM PDT WED JUL 19 2017 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... Northeastern Clark County in southern Nevada... * Until 915 AM PDT * At 622 AM PDT, Doppler radar indicated thunderstorms producing heavy rain across Valley of Fire State Park and Moapa Valley. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Overton, Moapa Valley, Overton Beach, Valley Of Fire and Logandale. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3666 11440 3643 11435 3637 11469 3661 11459 $$ JA
3 follow-up statements
201 WGUS75 KVEF 191444 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 744 AM PDT WED JUL 19 2017 NVC003-191615- /O.CON.KVEF.FF.W.0015.000000T0000Z-170719T1615Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clark NV- 744 AM PDT WED JUL 19 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 AM PDT FOR NORTHEASTERN CLARK COUNTY... At 741 AM PDT, Doppler radar indicated around 1 inch of rain fell over parts of Valley of Fire State Park and Moapa Valley between 6 AM and 7 AM. Showers have decreased to light to moderate but flash flooding can be expected in the warned area through at least 915 AM. Some locations that will experience flooding include... Valley of Fire Highway and State Park, Overton, Moapa Valley, and Logandale. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3666 11440 3643 11435 3637 11469 3661 11459 $$ JA
360 WGUS55 KVEF 191604 FFWVEF NVC003-191815- /O.EXT.KVEF.FF.W.0015.000000T0000Z-170719T1815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 904 AM PDT WED JUL 19 2017 The National Weather Service in Las Vegas has extended the * Flash Flood Warning for... Northeastern Clark County in southern Nevada... * Until 1115 AM PDT * At 902 AM PDT, emergency management officials reported flash flooding occurring in Logandale with several homes experiencing flooding and evacuations taking place. The heavy rain has ended in the area but runoff and flooding is expected to continue. * Some locations that will experience flooding include... Overton, Moapa Valley, Overton Beach, Valley Of Fire and Logandale. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3666 11440 3643 11435 3637 11469 3661 11459 $$ Czyzyk
911 WGUS75 KVEF 191807 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 1107 AM PDT WED JUL 19 2017 NVC003-191815- /O.EXP.KVEF.FF.W.0015.000000T0000Z-170719T1815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clark NV- 1107 AM PDT WED JUL 19 2017 ...THE FLASH FLOOD WARNING FOR NORTHEASTERN CLARK COUNTY WILL EXPIRE AT 1115 AM PDT... Any flood waters should have receded and flooding is no longer expected to pose a threat. Therefore the flash flood warning will be allowed to expire at 1115 AM PDT. Please continue to heed any remaining road closures. LAT...LON 3666 11440 3643 11435 3637 11469 3661 11459 $$ Czyzyk
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 5:14 PM PDT | Severe Thunderstorm Warning | VEF | Clark | 35 min |
| Jul 18, 6:01 PM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 19, 5:30 AM PDT | Areal Flood Advisory | VEF | Clark | 3 hr |
| Jul 19, 6:49 AM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 19, 8:32 AM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 19, 8:53 AM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
| Jul 19, 9:57 AM PDT | Flash Flood Warning | VEF | Clark | 3 hr |
Nearby
Flash Flood Warnings in Nevada, 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.