Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 60, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Aug 1, 2017, 5:45 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
- Aug 1, 2017, 5:45 PM MST (00:45 UTC)
- Expired
- Aug 1, 2017, 8:45 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), 83 km from the middle of the area, began a volume at 00:45 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, 0.8 hours before the alert went out and 178 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
- 277 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 3687 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
267
WGUS55 KVEF 020045
FFWVEF
AZC015-020345-
/O.NEW.KVEF.FF.W.0060.170802T0045Z-170802T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
545 PM MST TUE AUG 1 2017
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
West central Mohave County in northwestern Arizona...
* Until 845 PM MST
* At 545 PM MST, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Flash
flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Oatman and Golden Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
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.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3521 11413 3499 11414 3497 11440 3528 11439
3537 11425
$$
STEELE2 follow-up statements
446
WGUS75 KVEF 020254
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
754 PM MST TUE AUG 1 2017
AZC015-020345-
/O.CON.KVEF.FF.W.0060.000000T0000Z-170802T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
754 PM MST TUE AUG 1 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MST FOR
WEST CENTRAL MOHAVE COUNTY...
At 752 PM MST, Doppler radar and automated rain gauges indicated
only light rain remaining over the area. However, runoff will
continue and flooding is likely ongoing.
Some locations that will experience flooding include...
Oatman and Golden Valley.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3521 11413 3499 11414 3497 11440 3528 11439
3537 11425
$$
STEELE425
WGUS75 KVEF 020342
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
842 PM MST TUE AUG 1 2017
AZC015-020352-
/O.EXP.KVEF.FF.W.0060.000000T0000Z-170802T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
842 PM MST TUE AUG 1 2017
...THE FLASH FLOOD WARNING FOR WEST CENTRAL MOHAVE COUNTY WILL EXPIRE
AT 845 PM MST...
The heavy rain has ended. Flooding is no longer expected to pose a
new threat. Please continue to heed any remaining road closures.
LAT...LON 3521 11413 3499 11414 3497 11440 3528 11439
3537 11425
$$
STEELEThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:30 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 75 min |
| Aug 1, 5:37 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Aug 1, 6:09 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 51 min |
| Aug 2, 4:18 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Aug 2, 4:38 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 37 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.