Alert archive / Arizona / Flash Flood Warnings in 2017
Flash Flood Warning 9, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood warning at Jul 18, 2017, 1:59 PM MST for Mohave County, Arizona. 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 18, 2017, 1:59 PM MST (20:59 UTC)
- Expired
- Jul 18, 2017, 6:30 PM MST
- In force
- 5 hr
- Issued by
- NWS Las Vegas, NV
- Area
- Storm-based polygon
- Flood severity
- None
County Mohave County, AZ
The radar
The Cedar City radar (KICX), 150 km from the middle of the area, began a volume at 21:00 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, 9.0 hours before the alert went out and 158 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
- 3 J/kg
- Mixed-layer CIN
- -157 J/kg
- Mixed-layer LCL
- 1529 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
518
WGUS55 KVEF 182059
FFWVEF
AZC015-190130-
/O.NEW.KVEF.FF.W.0009.170718T2059Z-170719T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Las Vegas NV
159 PM MST TUE JUL 18 2017
The National Weather Service in Las Vegas has issued a
* Flash Flood Warning for...
Northeastern Mohave County in northwestern Arizona...
* Until 630 PM MST
* At 157 PM MST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is expected to
begin shortly.
* Some locations that will experience flooding include...
Mt. Trumbull, Toroweap Campground, Bar Ten Ranch, and Tuweep.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
Remain alert for flooding even in locations not receiving rain.
Arroyos, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.
&&
LAT...LON 3635 11266 3635 11272 3632 11272 3628 11279
3624 11302 3617 11313 3618 11316 3609 11323
3610 11331 3605 11335 3586 11331 3577 11335
3577 11354 3616 11363 3663 11361 3665 11263
3653 11266 3648 11262 3644 11264 3641 11262
$$
CFS2 follow-up statements
824
WGUS75 KVEF 182201
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
301 PM MST TUE JUL 18 2017
AZC015-190130-
/O.CON.KVEF.FF.W.0009.000000T0000Z-170719T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
301 PM MST TUE JUL 18 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR
NORTHEASTERN MOHAVE COUNTY...
At 259 PM MST, Thunderstorms and heavy rain have mostly ended across
the warned area. However, runoff will continue and potentially
impact areas away from where thunderstorms occured. Additional
thunderstorms remain possible.
Some locations that will experience flooding include...
Mt. Trumbull, Toroweap Campground, Bar Ten Ranch and Tuweep.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
Remain alert for flooding even in locations not receiving rain.
Arroyos, streams, and rivers can become raging killer currents in a
matter of minutes, even from distant rainfall.
&&
LAT...LON 3635 11266 3635 11272 3632 11272 3628 11279
3624 11302 3617 11313 3618 11316 3609 11323
3610 11331 3605 11335 3586 11331 3577 11335
3577 11354 3616 11363 3663 11361 3665 11263
3653 11266 3648 11262 3644 11264 3641 11262
$$
CFS124
WGUS75 KVEF 190122
FFSVEF
Flash Flood Statement
National Weather Service Las Vegas NV
622 PM MST TUE JUL 18 2017
AZC015-190130-
/O.EXP.KVEF.FF.W.0009.000000T0000Z-170719T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Mohave AZ-
622 PM MST TUE JUL 18 2017
...THE FLASH FLOOD WARNING FOR NORTHEASTERN MOHAVE COUNTY WILL EXPIRE
AT 630 PM MST...
The heavy rain has ended. Flooding is no longer expected to pose a
threat and the Flash Flood Warning for Northeastern Mohave County
will be allowed to expire at 630 PM MST. Please continue to heed any
remaining road closures.
LAT...LON 3635 11266 3635 11272 3632 11272 3628 11279
3624 11302 3617 11313 3618 11316 3609 11323
3610 11331 3605 11335 3586 11331 3577 11335
3577 11354 3616 11363 3663 11361 3665 11263
3653 11266 3648 11262 3644 11264 3641 11262
$$
CzyzykThe office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 5:02 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 17, 6:57 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Jul 17, 7:02 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Jul 17, 7:19 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 56 min |
| Jul 17, 8:05 PM MST | Areal Flood Advisory | VEF | Mohave | 3 hr |
| Jul 17, 8:09 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 35 min |
| Jul 18, 3:29 AM MST | Flash Flood Watch | VEF | Mohave | 41 hr |
| Jul 18, 2:18 PM MST | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 18, 2:57 PM MST | Flash Flood Warning | VEF | Mohave | 5 hr |
| Jul 18, 4:25 PM MST | Severe Thunderstorm Warning | VEF | Mohave | 50 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.