Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 23, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 19, 2017, 12:42 PM MST for Mohave County, Arizona. 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, 2017, 12:42 PM MST (19:42 UTC)
- Expired
- Jul 19, 2017, 3:45 PM MST
- In force
- 3 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 133 km from the middle of the area, began a volume at 19:43 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
Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 7.7 hours before the alert went out and 176 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
- 33 J/kg
- Mixed-layer CIN
- -137 J/kg
- Mixed-layer LCL
- 1462 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
806 WGUS55 KVEF 191942 FFWVEF AZC015-192245- /O.NEW.KVEF.FF.W.0023.170719T1942Z-170719T2245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 1242 PM MST WED JUL 19 2017 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... South central Mohave County in northwestern Arizona... * Until 345 PM MST * At 1240 PM MST, Doppler radar indicated thunderstorms producing heavy rain across the southern end of the Hualapai Mountains. The water will drain toward Highway 93 between mile markers 98 and 114. * Flash flooding will remain over mainly rural areas of south central Mohave County. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 3508 11360 3484 11360 3488 11390 3505 11388 $$ Morgan
3 follow-up statements
540 WGUS75 KVEF 192040 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 140 PM MST WED JUL 19 2017 AZC015-192245- /O.CON.KVEF.FF.W.0023.000000T0000Z-170719T2245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 140 PM MST WED JUL 19 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM MST FOR SOUTH CENTRAL MOHAVE COUNTY... At 138 PM MST, Doppler radar indicated that thunderstorms were moving away from the Hualapai Mountains. Radar estimated nearly four inches of rain in two hours on the southern end of the mountain range, and flash flooding is likely. The water will drain down to Highway 93 between mile markers 108 and 109. Flash flooding will remain over mainly rural areas of south central Mohave County. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 3508 11360 3484 11360 3488 11390 3505 11388 $$ morgan
011 WGUS75 KVEF 192137 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 237 PM MST WED JUL 19 2017 AZC015-192245- /O.CON.KVEF.FF.W.0023.000000T0000Z-170719T2245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 237 PM MST WED JUL 19 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM MST FOR SOUTH CENTRAL MOHAVE COUNTY... At 235 PM MST, Doppler radar indicated that thunderstorms had moved away from the Hualapai Mountains. Very heavy rain fell on the mountains, and water is likely still flowing downhill toward Highway 93 between mile markers 108 and 109. Flash flooding will remain over mainly rural areas of south central Mohave County. PRECAUTIONARY/PREPAREDNESS ACTIONS... In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 3508 11360 3484 11360 3488 11390 3505 11388 $$ Morgan
029 WGUS75 KVEF 192245 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 345 PM MST WED JUL 19 2017 AZC015-192254- /O.EXP.KVEF.FF.W.0023.000000T0000Z-170719T2245Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 345 PM MST WED JUL 19 2017 ...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL MOHAVE COUNTY WILL EXPIRE AT 345 PM MST... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. Additional lighter rain is possible over the next few hours. LAT...LON 3508 11360 3484 11360 3488 11390 3505 11388 $$ CFS
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 MST | Flash Flood Warning | VEF | Mohave | 2 hr |
| Jul 18, 5:14 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 35 min |
| Jul 19, 6:04 AM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 19, 7:11 AM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 19, 8:32 AM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 19, 10:08 AM MST | Flash Flood Warning | VEF | Mohave | 112 min |
Nearby
Flash Flood Warnings in Arizona, 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.