Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 86, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 10, 2017, 8:47 PM MST for Mohave County, Arizona. It was in force for 118 min. 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 10, 2017, 8:47 PM MST (03:47 UTC)
- Expired
- Aug 10, 2017, 10:45 PM MST
- In force
- 118 min
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Las Vegas radar (KESX), 111 km from the middle of the area, began a volume at 03:49 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 10, 9:45 PM MST | HEAVY RAIN 2.32 | 4 W Valentine, AZ | MOHAVE COUNTY FLOOD CONTROL DISTRICT ALERT STATION TRUXTON WASH @ ROUTE 66 MEASURED 2.32 INCHES OF RAIN. 1.57 INCHES FELL IN 30 MINUTES BETWEEN 9-9:30 PM. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Flgstf/Belemont, AZ (KFGZ), launched 00:00Z, 3.8 hours before the alert went out and 175 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
- 443 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 2202 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
906 WGUS55 KVEF 110347 FFWVEF AZC015-110545- /O.NEW.KVEF.FF.W.0086.170811T0347Z-170811T0545Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Las Vegas NV 847 PM MST THU AUG 10 2017 The National Weather Service in Las Vegas has issued a * Flash Flood Warning for... Central Mohave County in northwestern Arizona... * Until 1045 PM MST * At 846 PM MST, Doppler radar indicated thunderstorms producing heavy rain northeast of Kingman along Route 66. Flash flooding is expected to begin shortly. * Some locations that will experience flooding include... Valentine...Route 66 between mile markers 60 and 90. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3553 11351 3524 11356 3527 11401 3551 11400 $$ ASG
2 follow-up statements
380 WGUS75 KVEF 110420 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 920 PM MST THU AUG 10 2017 AZC015-110545- /O.CON.KVEF.FF.W.0086.000000T0000Z-170811T0545Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 920 PM MST THU AUG 10 2017 ...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 PM MST FOR CENTRAL MOHAVE COUNTY... At 916 PM MST, Doppler radar indicated a thunderstorm producing very heavy rain along Route 66 near Hackberry. An automated Mohave County Flood Control rain gauge has reported two inches of rain in the past hour, with more than one inch falling since 9 pm MST or in the past fifteen minutes. Flash flooding is likely occurring. Some locations that will experience flooding include... Valentine, Hackberry and Truxton Wash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3553 11351 3524 11356 3527 11401 3551 11400 $$ BP
339 WGUS75 KVEF 110541 FFSVEF Flash Flood Statement National Weather Service Las Vegas NV 1041 PM MST THU AUG 10 2017 AZC015-110550- /O.EXP.KVEF.FF.W.0086.000000T0000Z-170811T0545Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Mohave AZ- 1041 PM MST THU AUG 10 2017 ...THE FLASH FLOOD WARNING FOR CENTRAL MOHAVE COUNTY WILL EXPIRE AT 1045 PM MST... The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 3553 11351 3524 11356 3527 11401 3551 11400 $$ BP
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 6:30 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.